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#!/bin/sh
#
# Libav configure script
#
# Copyright (c) 2000-2002 Fabrice Bellard
# Copyright (c) 2005-2008 Diego Biurrun
# Copyright (c) 2005-2008 Mans Rullgard
#
# Prevent locale nonsense from breaking basic text processing.
LC_ALL=C
export LC_ALL
# make sure we are running under a compatible shell
# try to make this part work with most shells
try_exec(){
echo "Trying shell $1"
type "$1" > /dev/null 2>&1 && exec "$@"
}
unset foo
(: ${foo%%bar}) 2> /dev/null
E1="$?"
(: ${foo?}) 2> /dev/null
E2="$?"
if test "$E1" != 0 || test "$E2" = 0; then
echo "Broken shell detected. Trying alternatives."
export FF_CONF_EXEC
if test "0$FF_CONF_EXEC" -lt 1; then
FF_CONF_EXEC=1
try_exec bash "$0" "$@"
fi
if test "0$FF_CONF_EXEC" -lt 2; then
FF_CONF_EXEC=2
try_exec ksh "$0" "$@"
fi
if test "0$FF_CONF_EXEC" -lt 3; then
FF_CONF_EXEC=3
try_exec /usr/xpg4/bin/sh "$0" "$@"
fi
echo "No compatible shell script interpreter found."
echo "This configure script requires a POSIX-compatible shell"
echo "such as bash or ksh."
echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
echo "Instead, install a working POSIX-compatible shell."
echo "Disabling this configure test will create a broken Libav."
if test "$BASH_VERSION" = '2.04.0(1)-release'; then
echo "This bash version ($BASH_VERSION) is broken on your platform."
echo "Upgrade to a later version if available."
fi
exit 1
fi
test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
show_help(){
cat <<EOF
Usage: configure [options]
Options: [defaults in brackets after descriptions]
Help options:
--help print this message
--list-decoders show all available decoders
--list-encoders show all available encoders
--list-hwaccels show all available hardware accelerators
--list-demuxers show all available demuxers
--list-muxers show all available muxers
--list-parsers show all available parsers
--list-protocols show all available protocols
--list-bsfs show all available bitstream filters
--list-indevs show all available input devices
--list-outdevs show all available output devices
--list-filters show all available filters
Standard options:
--logfile=FILE log tests and output to FILE [config.log]
--disable-logging do not log configure debug information
--prefix=PREFIX install in PREFIX [$prefix]
--bindir=DIR install binaries in DIR [PREFIX/bin]
--datadir=DIR install data files in DIR [PREFIX/share/avconv]
--docdir=DIR install documentation in DIR [PREFIX/share/doc/libav]
--libdir=DIR install libs in DIR [PREFIX/lib]
--shlibdir=DIR install shared libs in DIR [PREFIX/lib]
--incdir=DIR install includes in DIR [PREFIX/include]
--mandir=DIR install man page in DIR [PREFIX/share/man]
--enable-rpath use rpath when linking programs [USE WITH CARE]
Licensing options:
--enable-gpl allow use of GPL code, the resulting libs
and binaries will be under GPL [no]
--enable-version3 upgrade (L)GPL to version 3 [no]
--enable-nonfree allow use of nonfree code, the resulting libs
and binaries will be unredistributable [no]
Configuration options:
--disable-static do not build static libraries [no]
--enable-shared build shared libraries [no]
--enable-small optimize for size instead of speed
--enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
--enable-gray enable full grayscale support (slower color)
--disable-swscale-alpha disable alpha channel support in swscale
--disable-all disable building components, libraries and programs
Program options:
--disable-programs do not build command line programs
--disable-avconv disable avconv build
--disable-avplay disable avplay build
--disable-avprobe disable avprobe build
--disable-avserver deprecated, does nothing
Component options:
--disable-doc do not build documentation
--disable-avdevice disable libavdevice build
--disable-avcodec disable libavcodec build
--disable-avformat disable libavformat build
--disable-avutil disable libavutil build
--disable-swscale disable libswscale build
--disable-avfilter disable video filter support [no]
--disable-avresample disable libavresample build [no]
--disable-pthreads disable pthreads [auto]
--disable-w32threads disable Win32 threads [auto]
--disable-network disable network support [no]
--disable-dct disable DCT code
--disable-error-resilience disable error resilience code
--disable-lsp disable LSP code
--disable-lzo disable LZO decoder code
--disable-mdct disable MDCT code
--disable-rdft disable RDFT code
--disable-fft disable FFT code
--disable-faan disable floating point AAN (I)DCT code
Hardware accelerators:
--enable-dxva2 enable DXVA2 code
--enable-vaapi enable VAAPI code
--enable-vda enable VDA code
--enable-vdpau enable VDPAU code
Individual component options:
--disable-everything disable all components listed below
--disable-encoder=NAME disable encoder NAME
--enable-encoder=NAME enable encoder NAME
--disable-encoders disable all encoders
--disable-decoder=NAME disable decoder NAME
--enable-decoder=NAME enable decoder NAME
--disable-decoders disable all decoders
--disable-hwaccel=NAME disable hwaccel NAME
--enable-hwaccel=NAME enable hwaccel NAME
--disable-hwaccels disable all hwaccels
--disable-muxer=NAME disable muxer NAME
--enable-muxer=NAME enable muxer NAME
--disable-muxers disable all muxers
--disable-demuxer=NAME disable demuxer NAME
--enable-demuxer=NAME enable demuxer NAME
--disable-demuxers disable all demuxers
--enable-parser=NAME enable parser NAME
--disable-parser=NAME disable parser NAME
--disable-parsers disable all parsers
--enable-bsf=NAME enable bitstream filter NAME
--disable-bsf=NAME disable bitstream filter NAME
--disable-bsfs disable all bitstream filters
--enable-protocol=NAME enable protocol NAME
--disable-protocol=NAME disable protocol NAME
--disable-protocols disable all protocols
--enable-indev=NAME enable input device NAME
--disable-indev=NAME disable input device NAME
--disable-indevs disable input devices
--enable-outdev=NAME enable output device NAME
--disable-outdev=NAME disable output device NAME
--disable-outdevs disable output devices
--disable-devices disable all devices
--enable-filter=NAME enable filter NAME
--disable-filter=NAME disable filter NAME
--disable-filters disable all filters
External library support:
--enable-avisynth enable reading of AviSynth script files [no]
--enable-bzlib enable bzlib [autodetect]
--enable-frei0r enable frei0r video filtering
--enable-gnutls enable gnutls [no]
--enable-libbs2b enable bs2b DSP library [no]
--enable-libcdio enable audio CD grabbing with libcdio
--enable-libdc1394 enable IIDC-1394 grabbing using libdc1394
and libraw1394 [no]
--enable-libfaac enable AAC encoding via libfaac [no]
--enable-libfdk-aac enable AAC de/encoding via libfdk-aac [no]
--enable-libfreetype enable libfreetype [no]
--enable-libgsm enable GSM de/encoding via libgsm [no]
--enable-libilbc enable iLBC de/encoding via libilbc [no]
--enable-libmp3lame enable MP3 encoding via libmp3lame [no]
--enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
--enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
--enable-libopencv enable video filtering via libopencv [no]
--enable-libopenjpeg enable JPEG 2000 de/encoding via OpenJPEG [no]
--enable-libopus enable Opus de/encoding via libopus [no]
--enable-libpulse enable Pulseaudio input via libpulse [no]
--enable-librtmp enable RTMP[E] support via librtmp [no]
--enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
--enable-libspeex enable Speex de/encoding via libspeex [no]
--enable-libtheora enable Theora encoding via libtheora [no]
--enable-libtwolame enable MP2 encoding via libtwolame [no]
--enable-libvo-aacenc enable AAC encoding via libvo-aacenc [no]
--enable-libvo-amrwbenc enable AMR-WB encoding via libvo-amrwbenc [no]
--enable-libvorbis enable Vorbis encoding via libvorbis [no]
--enable-libvpx enable VP8 and VP9 de/encoding via libvpx [no]
--enable-libwavpack enable wavpack encoding via libwavpack [no]
--enable-libwebp enable WebP encoding via libwebp [no]
--enable-libx264 enable H.264 encoding via x264 [no]
--enable-libx265 enable HEVC encoding via x265 [no]
--enable-libxavs enable AVS encoding via xavs [no]
--enable-libxcb enable X11 grabbing using XCB [no]
--enable-libxcb-shm enable X11 grabbing shm communication [auto]
--enable-libxcb-xfixes enable X11 grabbing mouse rendering [auto]
--enable-libxvid enable Xvid encoding via xvidcore,
native MPEG-4/Xvid encoder exists [no]
--enable-openssl enable openssl [no]
--enable-x11grab enable X11 grabbing (legacy) [no]
--enable-zlib enable zlib [autodetect]
Toolchain options:
--arch=ARCH select architecture [$arch]
--cpu=CPU select the minimum required CPU (affects
instruction selection, may crash on older CPUs)
--cross-prefix=PREFIX use PREFIX for compilation tools [$cross_prefix]
--enable-cross-compile assume a cross-compiler is used
--sysroot=PATH root of cross-build tree
--sysinclude=PATH location of cross-build system headers
--target-os=OS compiler targets OS [$target_os]
--target-exec=CMD command to run executables on target
--target-path=DIR path to view of build directory on target
--target-samples=DIR path to samples directory on target
--toolchain=NAME set tool defaults according to NAME
--nm=NM use nm tool
--ar=AR use archive tool AR [$ar_default]
--as=AS use assembler AS [$as_default]
--cc=CC use C compiler CC [$cc_default]
--dep-cc=DEPCC use dependency generator DEPCC [$cc_default]
--ld=LD use linker LD
--pkg-config=PKGCONFIG use pkg-config tool PKGCONFIG [$pkg_config_default]
--pkg-config-flags=FLAGS pass additional flags to pkgconf []
--host-cc=HOSTCC use host C compiler HOSTCC
--host-cflags=HCFLAGS use HCFLAGS when compiling for host
--host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
--host-ld=HOSTLD use host linker HOSTLD
--host-ldflags=HLDFLAGS use HLDFLAGS when linking for host
--host-libs=HLIBS use libs HLIBS when linking for host
--host-os=OS compiler host OS [$target_os]
--extra-cflags=ECFLAGS add ECFLAGS to CFLAGS [$CFLAGS]
--extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
--extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
--extra-libs=ELIBS add ELIBS [$ELIBS]
--extra-version=STRING version string suffix []
--optflags=OPTFLAGS override optimization-related compiler flags
--build-suffix=SUFFIX library name suffix []
--enable-pic build position-independent code
--enable-thumb compile for Thumb instruction set
--enable-lto use link-time optimization
Advanced options (experts only):
--malloc-prefix=PREFIX prefix malloc and related names with PREFIX
--disable-symver disable symbol versioning
--enable-hardcoded-tables use hardcoded tables instead of runtime generation
--disable-safe-bitstream-reader
disable buffer boundary checking in bitreaders
(faster, but may crash)
--enable-memalign-hack emulate memalign, interferes with memory debuggers
--enable-sram allow use of on-chip SRAM
Optimization options (experts only):
--disable-asm disable all assembly optimizations
--disable-altivec disable AltiVec optimizations
--disable-amd3dnow disable 3DNow! optimizations
--disable-amd3dnowext disable 3DNow! extended optimizations
--disable-mmx disable MMX optimizations
--disable-mmxext disable MMXEXT optimizations
--disable-sse disable SSE optimizations
--disable-sse2 disable SSE2 optimizations
--disable-sse3 disable SSE3 optimizations
--disable-ssse3 disable SSSE3 optimizations
--disable-sse4 disable SSE4 optimizations
--disable-sse42 disable SSE4.2 optimizations
--disable-avx disable AVX optimizations
--disable-xop disable XOP optimizations
--disable-fma3 disable FMA3 optimizations
--disable-fma4 disable FMA4 optimizations
--disable-avx2 disable AVX2 optimizations
--disable-armv5te disable armv5te optimizations
--disable-armv6 disable armv6 optimizations
--disable-armv6t2 disable armv6t2 optimizations
--disable-vfp disable VFP optimizations
--disable-neon disable NEON optimizations
--disable-inline-asm disable use of inline assembly
--disable-yasm disable use of nasm/yasm assembly
Developer options (useful when working on Libav itself):
--disable-debug disable debugging symbols
--enable-debug=LEVEL set the debug level [$debuglevel]
--disable-optimizations disable compiler optimizations
--enable-extra-warnings enable more compiler warnings
--samples=PATH location of test samples for FATE, if not set use
\$LIBAV_SAMPLES at make invocation time.
--enable-neon-clobber-test check NEON registers for clobbering (should be
used only for debugging purposes)
--enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
should be used only for debugging purposes)
--enable-random randomly enable/disable components
--disable-random
--enable-random=LIST randomly enable/disable specific components or
--disable-random=LIST component groups. LIST is a comma-separated list
of NAME[:PROB] entries where NAME is a component
(group) and PROB the probability associated with
NAME (default 0.5).
--random-seed=VALUE seed value for --enable/disable-random
NOTE: Object files are built at the place where configure is launched.
EOF
exit 0
}
quotes='""'
log(){
echo "$@" >> $logfile
}
log_file(){
log BEGIN $1
pr -n -t $1 >> $logfile
log END $1
}
echolog(){
log "$@"
echo "$@"
}
warn(){
log "WARNING: $*"
WARNINGS="${WARNINGS}WARNING: $*\n"
}
die(){
echolog "$@"
cat <<EOF
If you think configure made a mistake, make sure you are using the latest
version from Git. If the latest version fails, report the problem to the
libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
EOF
if disabled logging; then
cat <<EOF
Rerun configure with logging enabled (do not use --disable-logging), and
include the log this produces with your report.
EOF
else
cat <<EOF
Include the log file "$logfile" produced by configure as this will help
solving the problem.
EOF
fi
exit 1
}
# Avoid locale weirdness, besides we really just want to translate ASCII.
toupper(){
echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
}
tolower(){
echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
}
c_escape(){
echo "$*" | sed 's/["\\]/\\\0/g'
}
sh_quote(){
v=$(echo "$1" | sed "s/'/'\\\\''/g")
test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
echo "$v"
}
cleanws(){
echo "$@" | sed 's/^ *//;s/ */ /g;s/ *$//'
}
filter(){
pat=$1
shift
for v; do
eval "case $v in $pat) echo $v ;; esac"
done
}
filter_out(){
pat=$1
shift
for v; do
eval "case $v in $pat) ;; *) echo $v ;; esac"
done
}
map(){
m=$1
shift
for v; do eval $m; done
}
add_suffix(){
suffix=$1
shift
for v; do echo ${v}${suffix}; done
}
set_all(){
value=$1
shift
for var in $*; do
eval $var=$value
done
}
set_weak(){
value=$1
shift
for var; do
eval : \${$var:=$value}
done
}
sanitize_var_name(){
echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
}
set_safe(){
var=$1
shift
eval $(sanitize_var_name "$var")='$*'
}
get_safe(){
eval echo \$$(sanitize_var_name "$1")
}
pushvar(){
for pvar in $*; do
eval level=\${${pvar}_level:=0}
eval ${pvar}_${level}="\$$pvar"
eval ${pvar}_level=$(($level+1))
done
}
popvar(){
for pvar in $*; do
eval level=\${${pvar}_level:-0}
test $level = 0 && continue
eval level=$(($level-1))
eval $pvar="\${${pvar}_${level}}"
eval ${pvar}_level=$level
eval unset ${pvar}_${level}
done
}
enable(){
set_all yes $*
}
disable(){
set_all no $*
}
enable_weak(){
set_weak yes $*
}
disable_weak(){
set_weak no $*
}
enable_safe(){
for var; do
enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
done
}
disable_safe(){
for var; do
disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
done
}
do_enable_deep(){
for var; do
enabled $var && continue
eval sel="\$${var}_select"
eval sgs="\$${var}_suggest"
pushvar var sgs
enable_deep $sel
popvar sgs
enable_deep_weak $sgs
popvar var
done
}
enable_deep(){
do_enable_deep $*
enable $*
}
enable_deep_weak(){
for var; do
disabled $var && continue
pushvar var
do_enable_deep $var
popvar var
enable_weak $var
done
}
enabled(){
test "${1#!}" = "$1" && op== || op=!=
eval test "x\$${1#!}" $op "xyes"
}
disabled(){
test "${1#!}" = "$1" && op== || op=!=
eval test "x\$${1#!}" $op "xno"
}
enabled_all(){
for opt; do
enabled $opt || return 1
done
}
disabled_all(){
for opt; do
disabled $opt || return 1
done
}
enabled_any(){
for opt; do
enabled $opt && return 0
done
}
disabled_any(){
for opt; do
disabled $opt && return 0
done
return 1
}
set_default(){
for opt; do
eval : \${$opt:=\$${opt}_default}
done
}
is_in(){
value=$1
shift
for var in $*; do
[ $var = $value ] && return 0
done
return 1
}
do_check_deps(){
for cfg; do
cfg="${cfg#!}"
enabled ${cfg}_checking && die "Circular dependency for $cfg."
disabled ${cfg}_checking && continue
enable ${cfg}_checking
append allopts $cfg
eval dep_all="\$${cfg}_deps"
eval dep_any="\$${cfg}_deps_any"
eval dep_sel="\$${cfg}_select"
eval dep_sgs="\$${cfg}_suggest"
eval dep_ifa="\$${cfg}_if"
eval dep_ifn="\$${cfg}_if_any"
pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
[ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
[ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
enabled_all $dep_all || disable $cfg
enabled_any $dep_any || disable $cfg
disabled_any $dep_sel && disable $cfg
if enabled $cfg; then
enable_deep $dep_sel
enable_deep_weak $dep_sgs
fi
disable ${cfg}_checking
done
}
check_deps(){
unset allopts
do_check_deps "$@"
for cfg in $allopts; do
enabled $cfg || continue
eval dep_extralibs="\$${cfg}_extralibs"
test -n "$dep_extralibs" && add_extralibs $dep_extralibs
done
}
print_config(){
pfx=$1
files=$2
shift 2
map 'eval echo "$v \${$v:-no}"' "$@" |
awk "BEGIN { split(\"$files\", files) }
{
c = \"$pfx\" toupper(\$1);
v = \$2;
sub(/yes/, 1, v);
sub(/no/, 0, v);
for (f in files) {
file = files[f];
if (file ~ /\\.h\$/) {
printf(\"#define %s %d\\n\", c, v) >>file;
} else if (file ~ /\\.asm\$/) {
printf(\"%%define %s %d\\n\", c, v) >>file;
} else if (file ~ /\\.mak\$/) {
n = -v ? \"\" : \"!\";
printf(\"%s%s=yes\\n\", n, c) >>file;
}
}
}"
}
print_enabled(){
suf=$1
shift
for v; do
enabled $v && printf "%s\n" ${v%$suf};
done
}
append(){
var=$1
shift
eval "$var=\"\$$var $*\""
}
prepend(){
var=$1
shift
eval "$var=\"$* \$$var\""
}
unique(){
var=$1
uniq_list=""
for tok in $(eval echo \$$var); do
uniq_list="$(filter_out $tok $uniq_list) $tok"
done
eval "$var=\"${uniq_list}\""
}
add_cppflags(){
append CPPFLAGS "$@"
}
add_cflags(){
append CFLAGS $($cflags_filter "$@")
}
add_asflags(){
append ASFLAGS $($asflags_filter "$@")
}
add_ldflags(){
append LDFLAGS $($ldflags_filter "$@")
}
add_ldexeflags(){
append LDEXEFLAGS $($ldflags_filter "$@")
}
add_stripflags(){
append STRIPFLAGS "$@"
}
add_extralibs(){
prepend extralibs $($ldflags_filter "$@")
}
add_host_cppflags(){
append host_cppflags "$@"
}
add_host_cflags(){
append host_cflags $($host_cflags_filter "$@")
}
add_host_ldflags(){
append host_ldflags $($host_ldflags_filter "$@")
}
add_compat(){
append compat_objs $1
shift
map 'add_cppflags -D$v' "$@"
}
check_cmd(){
log "$@"
"$@" >> $logfile 2>&1
}
cc_o(){
eval printf '%s\\n' $CC_O
}
cc_e(){
eval printf '%s\\n' $CC_E
}
check_cc(){
log check_cc "$@"
cat > $TMPC
log_file $TMPC
check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
}
check_cpp(){
log check_cpp "$@"
cat > $TMPC
log_file $TMPC
check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
}
as_o(){
eval printf '%s\\n' $AS_O
}
check_as(){
log check_as "$@"
cat > $TMPS
log_file $TMPS
check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
}
check_inline_asm(){
log check_inline_asm "$@"
name="$1"
code="$2"
shift 2
disable $name
check_cc "$@" <<EOF && enable $name
void foo(void){ __asm__ volatile($code); }
EOF
}
check_insn(){
log check_insn "$@"
check_inline_asm ${1}_inline "\"$2\""
echo "$2" | check_as && enable ${1}_external || disable ${1}_external
}
check_yasm(){
log check_yasm "$@"
echo "$1" > $TMPS
log_file $TMPS
shift 1
check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
}
ld_o(){
eval printf '%s\\n' $LD_O
}
check_ld(){
log check_ld "$@"
flags=$(filter_out '-l*' "$@")
libs=$(filter '-l*' "$@")
check_cc $($cflags_filter $flags) || return
flags=$($ldflags_filter $flags)
libs=$($ldflags_filter $libs)
check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
}
print_include(){
hdr=$1
test "${hdr%.h}" = "${hdr}" &&
echo "#include $hdr" ||
echo "#include <$hdr>"
}
check_code(){
log check_code "$@"
check=$1
headers=$2
code=$3
shift 3
{
for hdr in $headers; do
print_include $hdr
done
echo "int main(void) { $code; return 0; }"
} | check_$check "$@"
}
check_cppflags(){
log check_cppflags "$@"
check_cc "$@" <<EOF && append CPPFLAGS "$@"
int x;
EOF
}
test_cflags(){
log test_cflags "$@"
set -- $($cflags_filter "$@")
check_cc "$@" <<EOF
int x;
EOF
}
check_cflags(){
log check_cflags "$@"
test_cflags "$@" && add_cflags "$@"
}
test_ldflags(){
log test_ldflags "$@"
check_ld "$@" <<EOF
int main(void){ return 0; }
EOF
}
check_ldflags(){
log check_ldflags "$@"
test_ldflags "$@" && add_ldflags "$@"
}
test_stripflags(){
log test_stripflags "$@"
# call check_cc to get a fresh TMPO
check_cc <<EOF
int main(void) { return 0; }
EOF
check_cmd $strip $STRIPFLAGS "$@" $TMPO
}
check_stripflags(){
log check_stripflags "$@"
test_stripflags "$@" && add_stripflags "$@"
}
check_header(){
log check_header "$@"
header=$1
shift
disable_safe $header
check_cpp "$@" <<EOF && enable_safe $header
#include <$header>
int x;
EOF
}
check_func(){
log check_func "$@"
func=$1
shift
disable $func
check_ld "$@" <<EOF && enable $func
extern int $func();
int main(void){ $func(); }
EOF
}
check_mathfunc(){
log check_mathfunc "$@"
func=$1
narg=$2
shift 2
test $narg = 2 && args="f, g" || args="f"
disable $func
check_ld "$@" <<EOF && enable $func
#include <math.h>
float foo(float f, float g) { return $func($args); }
int main(void){ return 0; }
EOF
}
check_func_headers(){
log check_func_headers "$@"
headers=$1
funcs=$2
shift 2
{
for hdr in $headers; do
print_include $hdr
done
for func in $funcs; do
echo "long check_$func(void) { return (long) $func; }"
done
echo "int main(void) { return 0; }"
} | check_ld "$@" && enable $funcs && enable_safe $headers
}
check_cpp_condition(){
log check_cpp_condition "$@"
header=$1
condition=$2
shift 2
check_cpp "$@" <<EOF
#include <$header>
#if !($condition)
#error "unsatisfied condition: $condition"
#endif
EOF
}
check_lib(){
log check_lib "$@"
header="$1"
func="$2"
shift 2
check_header $header && check_func $func "$@" && add_extralibs "$@"
}
check_lib2(){
log check_lib2 "$@"
headers="$1"
funcs="$2"
shift 2
check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
}
check_pkg_config(){
log check_pkg_config "$@"
pkg="$1"
headers="$2"
funcs="$3"
shift 3
check_cmd $pkg_config --exists --print-errors $pkg || return
pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
set_safe ${pkg}_cflags $pkg_cflags &&
set_safe ${pkg}_libs $pkg_libs
}
check_exec(){
check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
}
check_exec_crash(){
code=$(cat)
# exit() is not async signal safe. _Exit (C99) and _exit (POSIX)
# are safe but may not be available everywhere. Thus we use
# raise(SIGTERM) instead. The check is run in a subshell so we
# can redirect the "Terminated" message from the shell. SIGBUS
# is not defined by standard C so it is used conditionally.
(check_exec "$@") >> $logfile 2>&1 <<EOF
#include <signal.h>
static void sighandler(int sig){
raise(SIGTERM);
}
int foo(void){
$code
}
int (*func_ptr)(void) = foo;
int main(void){
signal(SIGILL, sighandler);
signal(SIGFPE, sighandler);
signal(SIGSEGV, sighandler);
#ifdef SIGBUS
signal(SIGBUS, sighandler);
#endif
return func_ptr();
}
EOF
}
check_type(){
log check_type "$@"
headers=$1
type=$2
shift 2
disable_safe "$type"
check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
}
check_struct(){
log check_struct "$@"
headers=$1
struct=$2
member=$3
shift 3
disable_safe "${struct}_${member}"
check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
enable_safe "${struct}_${member}"
}
check_builtin(){
log check_builtin "$@"
name=$1
headers=$2
builtin=$3
shift 3
disable "$name"
check_code ld "$headers" "$builtin" "$@" && enable "$name"
}
check_compile_assert(){
log check_compile_assert "$@"
name=$1
headers=$2
condition=$3
shift 3
disable "$name"
check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
}
require(){
name="$1"
header="$2"
func="$3"
shift 3
check_lib $header $func "$@" || die "ERROR: $name not found"
}
require2(){
name="$1"
headers="$2"
func="$3"
shift 3
check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
}
require_pkg_config(){
pkg="$1"
check_pkg_config "$@" || die "ERROR: $pkg not found"
add_cflags $(get_safe ${pkg}_cflags)
add_extralibs $(get_safe ${pkg}_libs)
}
hostcc_e(){
eval printf '%s\\n' $HOSTCC_E
}
hostcc_o(){
eval printf '%s\\n' $HOSTCC_O
}
check_host_cc(){
log check_host_cc "$@"
cat > $TMPC
log_file $TMPC
check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
}
check_host_cpp(){
log check_host_cpp "$@"
cat > $TMPC
log_file $TMPC
check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
}
check_host_cppflags(){
log check_host_cppflags "$@"
check_host_cc "$@" <<EOF && append host_cppflags "$@"
int x;
EOF
}
check_host_cflags(){
log check_host_cflags "$@"
set -- $($host_cflags_filter "$@")
check_host_cc "$@" <<EOF && append host_cflags "$@"
int x;
EOF
}
check_host_cpp_condition(){
log check_host_cpp_condition "$@"
header=$1
condition=$2
shift 2
check_host_cpp "$@" <<EOF
#include <$header>
#if !($condition)
#error "unsatisfied condition: $condition"
#endif
EOF
}
apply(){
file=$1
shift
"$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
}
cp_if_changed(){
cmp -s "$1" "$2" && echo "$2 is unchanged" && return
mkdir -p "$(dirname $2)"
$cp_f "$1" "$2"
}
# CONFIG_LIST contains configurable options, while HAVE_LIST is for
# system-dependent things.
COMPONENT_LIST="
bsfs
decoders
demuxers
encoders
filters
hwaccels
indevs
muxers
outdevs
parsers
protocols
"
EXAMPLE_LIST="
avcodec_example
filter_audio_example
metadata_example
output_example
transcode_aac_example
"
EXTERNAL_LIBRARY_LIST="
avisynth
bzlib
frei0r
gnutls
libbs2b
libcdio
libdc1394
libfaac
libfdk_aac
libfontconfig
libfreetype
libgsm
libilbc
libmp3lame
libopencore_amrnb
libopencore_amrwb
libopencv
libopenjpeg
libopus
libpulse
librtmp
libschroedinger
libspeex
libtheora
libtwolame
libvo_aacenc
libvo_amrwbenc
libvorbis
libvpx
libwavpack
libwebp
libx264
libx265
libxavs
libxcb
libxcb_shm
libxcb_xfixes
libxvid
openssl
x11grab
zlib
"
FEATURE_LIST="
gray
hardcoded_tables
runtime_cpudetect
safe_bitstream_reader
shared
small
sram
static
swscale_alpha
"
HWACCEL_LIST="
dxva2
vaapi
vda
vdpau
"
LIBRARY_LIST="
avcodec
avdevice
avfilter
avformat
avresample
avutil
swscale
"
LICENSE_LIST="
gpl
nonfree
version3
"
PROGRAM_LIST="
avconv
avplay
avprobe
"
SUBSYSTEM_LIST="
dct
doc
error_resilience
faan
fft
lsp
lzo
mdct
network
rdft
"
CONFIG_LIST="
$COMPONENT_LIST
$EXAMPLE_LIST
$EXTERNAL_LIBRARY_LIST
$FEATURE_LIST
$HWACCEL_LIST
$LICENSE_LIST
$LIBRARY_LIST
$PROGRAM_LIST
$SUBSYSTEM_LIST
memalign_hack
neon_clobber_test
pic
pod2man
texi2html
thumb
xmm_clobber_test
"
THREADS_LIST="
pthreads
w32threads
"
ATOMICS_LIST="
atomics_gcc
atomics_suncc
atomics_win32
"
ARCH_LIST="
aarch64
alpha
arm
avr32
avr32_ap
avr32_uc
bfin
ia64
m68k
mips
mips64
parisc
ppc
ppc64
s390
sh4
sparc
sparc64
tilegx
tilepro
tomi
x86
x86_32
x86_64
"
ARCH_EXT_LIST_ARM="
armv5te
armv6
armv6t2
armv8
neon
vfp
vfpv3
"
ARCH_EXT_LIST_X86_SIMD="
amd3dnow
amd3dnowext
avx
avx2
fma3
fma4
mmx
mmxext
sse
sse2
sse3
sse4
sse42
ssse3
xop
"
ARCH_EXT_LIST_PPC="
altivec
dcbzl
ldbrx
ppc4xx
"
ARCH_EXT_LIST_X86="
$ARCH_EXT_LIST_X86_SIMD
cpunop
i686
"
ARCH_EXT_LIST="
$ARCH_EXT_LIST_ARM
$ARCH_EXT_LIST_PPC
$ARCH_EXT_LIST_X86
loongson
vis
"
ARCH_FEATURES="
aligned_stack
fast_64bit
fast_clz
fast_cmov
local_aligned_8
local_aligned_16
simd_align_16
"
BUILTIN_LIST="
atomic_cas_ptr
machine_rw_barrier
MemoryBarrier
mm_empty
rdtsc
sync_val_compare_and_swap
"
HAVE_LIST_CMDLINE="
inline_asm
symver
yasm
"
HAVE_LIST_PUB="
bigendian
fast_unaligned
"
HEADERS_LIST="
alsa_asoundlib_h
altivec_h
arpa_inet_h
cdio_paranoia_h
cdio_paranoia_paranoia_h
dev_bktr_ioctl_bt848_h
dev_bktr_ioctl_meteor_h
dev_ic_bt8xx_h
dev_video_bktr_ioctl_bt848_h
dev_video_meteor_ioctl_meteor_h
direct_h
dlfcn_h
dxva_h
gsm_h
io_h
mach_mach_time_h
machine_ioctl_bt848_h
machine_ioctl_meteor_h
malloc_h
poll_h
sndio_h
soundcard_h
sys_mman_h
sys_param_h
sys_resource_h
sys_select_h
sys_soundcard_h
sys_time_h
sys_un_h
sys_videoio_h
unistd_h
windows_h
winsock2_h
"
INTRINSICS_LIST="
intrinsics_neon
"
MATH_FUNCS="
atanf
atan2f
cbrtf
cosf
exp2
exp2f
expf
isinf
isnan
ldexpf
llrint
llrintf
log2
log2f
log10f
lrint
lrintf
powf
rint
round
roundf
sinf
trunc
truncf
"
SYSTEM_FUNCS="
aligned_malloc
clock_gettime
closesocket
CommandLineToArgvW
CoTaskMemFree
CryptGenRandom
dlopen
fcntl
flt_lim
fork
getaddrinfo
gethrtime
getopt
GetProcessAffinityMask
GetProcessMemoryInfo
GetProcessTimes
getrusage
getservbyport
GetSystemTimeAsFileTime
gettimeofday
gmtime_r
inet_aton
isatty
jack_port_get_latency_range
localtime_r
mach_absolute_time
MapViewOfFile
MoveFileExA
memalign
mkstemp
mmap
mprotect
nanosleep
posix_memalign
sched_getaffinity
SetConsoleTextAttribute
setmode
setrlimit
Sleep
strerror_r
strptime
sysconf
sysctl
usleep
VirtualAlloc
"
TOOLCHAIN_FEATURES="
as_dn_directive
as_func
asm_mod_q
attribute_may_alias
attribute_packed
ebp_available
ebx_available
gnu_as
ibm_asm
inline_asm_labels
pragma_deprecated
symver_asm_label
symver_gnu_asm
vfp_args
xform_asm
xmm_clobbers
"
TYPES_LIST="
CONDITION_VARIABLE_Ptr
socklen_t
struct_addrinfo
struct_group_source_req
struct_ip_mreq_source
struct_ipv6_mreq
struct_pollfd
struct_rusage_ru_maxrss
struct_sockaddr_in6
struct_sockaddr_sa_len
struct_sockaddr_storage
struct_v4l2_frmivalenum_discrete
"
HAVE_LIST="
$ARCH_EXT_LIST
$(add_suffix _external $ARCH_EXT_LIST)
$(add_suffix _inline $ARCH_EXT_LIST)
$ARCH_FEATURES
$ATOMICS_LIST
$BUILTIN_LIST
$HAVE_LIST_CMDLINE
$HAVE_LIST_PUB
$HEADERS_LIST
$INTRINSICS_LIST
$MATH_FUNCS
$SYSTEM_FUNCS
$THREADS_LIST
$TOOLCHAIN_FEATURES
$TYPES_LIST
atomics_native
dos_paths
dxva2_lib
libc_msvcrt
libdc1394_1
libdc1394_2
sdl
section_data_rel_ro
threads
vdpau_x11
xlib
"
# options emitted with CONFIG_ prefix but not available on the command line
CONFIG_EXTRA="
aandcttables
ac3dsp
audio_frame_queue
audiodsp
blockdsp
bswapdsp
cabac
dvprofile
faandct
faanidct
fdctdsp
gcrypt
golomb
gplv3
h263dsp
h264chroma
h264dsp
h264pred
h264qpel
hpeldsp
huffman
huffyuvdsp
huffyuvencdsp
idctdsp
iirfilter
intrax8
lgplv3
lpc
me_cmp
mpeg_er
mpegaudio
mpegaudiodsp
mpegvideo
mpegvideoenc
nettle
pixblockdsp
qpeldsp
rangecoder
riffdec
riffenc
rtpdec
rtpenc_chain
sinewin
startcode
tpeldsp
videodsp
vp3dsp
wma_freqs
"
CMDLINE_SELECT="
$ARCH_EXT_LIST
$CONFIG_LIST
$HAVE_LIST_CMDLINE
$THREADS_LIST
asm
cross_compile
debug
extra_warnings
logging
lto
optimizations
rpath
"
PATHS_LIST="
bindir
datadir
docdir
incdir
libdir
mandir
prefix
shlibdir
"
CMDLINE_SET="
$PATHS_LIST
ar
arch
as
build_suffix
cc
cpu
cross_prefix
dep_cc
extra_version
host_cc
host_cflags
host_ld
host_ldflags
host_libs
host_os
ld
logfile
malloc_prefix
nm
optflags
pkg_config
pkg_config_flags
random_seed
samples
sysinclude
sysroot
target_exec
target_os
target_path
target_samples
toolchain
"
CMDLINE_APPEND="
extra_cflags
host_cppflags
"
# code dependency declarations
# architecture extensions
armv5te_deps="arm"
armv6_deps="arm"
armv6t2_deps="arm"
armv8_deps="aarch64"
neon_deps_any="aarch64 arm"
intrinsics_neon_deps="neon"
vfp_deps_any="aarch64 arm"
vfpv3_deps="vfp"
map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
altivec_deps="ppc"
ppc4xx_deps="ppc"
cpunop_deps="i686"
x86_64_select="i686"
x86_64_suggest="fast_cmov"
amd3dnow_deps="mmx"
amd3dnowext_deps="amd3dnow"
i686_deps="x86"
mmx_deps="x86"
mmxext_deps="mmx"
sse_deps="mmxext"
sse2_deps="sse"
sse3_deps="sse2"
ssse3_deps="sse3"
sse4_deps="ssse3"
sse42_deps="sse4"
avx_deps="sse42"
xop_deps="avx"
fma3_deps="avx"
fma4_deps="avx"
avx2_deps="avx"
mmx_external_deps="yasm"
mmx_inline_deps="inline_asm"
mmx_suggest="mmx_external mmx_inline"
for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
eval dep=\$${ext}_deps
eval ${ext}_external_deps='"${dep}_external"'
eval ${ext}_inline_deps='"${dep}_inline"'
eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
done
aligned_stack_if_any="aarch64 ppc x86"
fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
fast_unaligned_if_any="aarch64 ppc x86"
simd_align_16_if_any="altivec neon sse"
# system capabilities
log2_deps="!libc_msvcrt"
symver_if_any="symver_asm_label symver_gnu_asm"
# threading support
atomics_gcc_if="sync_val_compare_and_swap"
atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
atomics_win32_if="MemoryBarrier"
atomics_native_if_any="$ATOMICS_LIST"
w32threads_deps="atomics_native"
threads_if_any="$THREADS_LIST"
# subsystems
dct_select="rdft"
error_resilience_select="me_cmp"
faandct_deps="faan fdctdsp"
faanidct_deps="faan idctdsp"
intrax8_select="error_resilience"
mdct_select="fft"
rdft_select="fft"
me_cmp_select="fdctdsp idctdsp pixblockdsp"
mpeg_er_select="error_resilience"
mpegaudio_select="mpegaudiodsp"
mpegaudiodsp_select="dct"
mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
# decoders / encoders
aac_decoder_select="mdct sinewin"
aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
aac_latm_decoder_select="aac_decoder aac_latm_parser"
ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
aic_decoder_select="golomb idctdsp"
alac_encoder_select="lpc"
als_decoder_select="bswapdsp"
amrnb_decoder_select="lsp"
amrwb_decoder_select="lsp"
amv_decoder_select="sp5x_decoder"
ape_decoder_select="bswapdsp"
asv1_decoder_select="blockdsp bswapdsp idctdsp"
asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
asv2_decoder_select="blockdsp bswapdsp idctdsp"
asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
atrac1_decoder_select="mdct sinewin"
atrac3_decoder_select="mdct"
atrac3p_decoder_select="mdct sinewin"
bink_decoder_select="blockdsp hpeldsp"
binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
cllc_decoder_select="bswapdsp"
comfortnoise_encoder_select="lpc"
cook_decoder_select="audiodsp mdct sinewin"
cscd_decoder_select="lzo"
cscd_decoder_suggest="zlib"
dca_decoder_select="mdct"
dnxhd_decoder_select="blockdsp idctdsp"
dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
dvvideo_decoder_select="dvprofile idctdsp"
dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
dxa_decoder_deps="zlib"
eac3_decoder_select="ac3_decoder"
eac3_encoder_select="ac3_encoder"
eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
eatgq_decoder_select="aandcttables idctdsp"
eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
exr_decoder_deps="zlib"
ffv1_decoder_select="golomb rangecoder"
ffv1_encoder_select="rangecoder"
ffvhuff_decoder_select="huffyuv_decoder"
ffvhuff_encoder_select="huffyuv_encoder"
fic_decoder_select="golomb"
flac_decoder_select="golomb"
flac_encoder_select="bswapdsp golomb lpc"
flashsv_decoder_deps="zlib"
flashsv_encoder_deps="zlib"
flashsv2_decoder_deps="zlib"
flv_decoder_select="h263_decoder"
flv_encoder_select="h263_encoder"
fourxm_decoder_select="blockdsp bswapdsp"
fraps_decoder_select="bswapdsp huffman"
g2m_decoder_deps="zlib"
g2m_decoder_select="blockdsp idctdsp"
h261_decoder_select="mpeg_er mpegvideo"
h261_encoder_select="aandcttables mpegvideoenc"
h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
h263_encoder_select="aandcttables h263dsp mpegvideoenc"
h263i_decoder_select="h263_decoder"
h263p_encoder_select="h263_encoder"
h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
h264_decoder_suggest="error_resilience"
hevc_decoder_select="bswapdsp cabac golomb videodsp"
huffyuv_decoder_select="bswapdsp huffyuvdsp"
huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
iac_decoder_select="imc_decoder"
imc_decoder_select="bswapdsp fft mdct sinewin"
indeo3_decoder_select="hpeldsp"
interplay_video_decoder_select="hpeldsp"
jpegls_decoder_select="golomb mjpeg_decoder"
jpegls_encoder_select="golomb"
jv_decoder_select="blockdsp"
lagarith_decoder_select="huffyuvdsp"
ljpeg_encoder_select="aandcttables idctdsp"
loco_decoder_select="golomb"
mdec_decoder_select="blockdsp idctdsp mpegvideo"
metasound_decoder_select="lsp mdct sinewin"
mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
mjpeg_decoder_select="blockdsp hpeldsp idctdsp"
mjpeg_encoder_select="aandcttables mpegvideoenc"
mjpegb_decoder_select="mjpeg_decoder"
mlp_decoder_select="mlp_parser"
motionpixels_decoder_select="bswapdsp"
mp1_decoder_select="mpegaudio"
mp1float_decoder_select="mpegaudio"
mp2_decoder_select="mpegaudio"
mp2float_decoder_select="mpegaudio"
mp3_decoder_select="mpegaudio"
mp3adu_decoder_select="mpegaudio"
mp3adufloat_decoder_select="mpegaudio"
mp3float_decoder_select="mpegaudio"
mp3on4_decoder_select="mpegaudio"
mp3on4float_decoder_select="mpegaudio"
mpc7_decoder_select="bswapdsp mpegaudiodsp"
mpc8_decoder_select="mpegaudiodsp"
mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
mpeg_xvmc_decoder_select="mpeg2video_decoder"
mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
mpeg1video_encoder_select="aandcttables mpegvideoenc"
mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
mpeg2video_encoder_select="aandcttables mpegvideoenc"
mpeg4_decoder_select="h263_decoder mpeg4video_parser"
mpeg4_encoder_select="h263_encoder"
msmpeg4v1_decoder_select="h263_decoder"
msmpeg4v2_decoder_select="h263_decoder"
msmpeg4v2_encoder_select="h263_encoder"
msmpeg4v3_decoder_select="h263_decoder"
msmpeg4v3_encoder_select="h263_encoder"
mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
mxpeg_decoder_select="mjpeg_decoder"
nellymoser_decoder_select="mdct sinewin"
nellymoser_encoder_select="audio_frame_queue mdct sinewin"
nuv_decoder_select="idctdsp lzo"
on2avc_decoder_select="mdct"
opus_decoder_deps="avresample"
png_decoder_deps="zlib"
png_encoder_deps="zlib"
png_encoder_select="huffyuvencdsp"
prores_decoder_select="idctdsp"
prores_encoder_select="fdctdsp"
qcelp_decoder_select="lsp"
qdm2_decoder_select="mdct rdft mpegaudiodsp"
ra_144_encoder_select="audio_frame_queue lpc"
ralf_decoder_select="golomb"
rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
rv10_encoder_select="h263_encoder"
rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
rv20_encoder_select="h263_encoder"
rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
shorten_decoder_select="golomb"
sipr_decoder_select="lsp"
sp5x_decoder_select="mjpeg_decoder"
svq1_decoder_select="hpeldsp"
svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
svq3_decoder_suggest="zlib"
tak_decoder_select="audiodsp"
theora_decoder_select="vp3_decoder"
thp_decoder_select="mjpeg_decoder"
tiff_decoder_suggest="zlib"
tiff_encoder_suggest="zlib"
truehd_decoder_select="mlp_decoder"
truemotion2_decoder_select="bswapdsp"
truespeech_decoder_select="bswapdsp"
tscc_decoder_deps="zlib"
twinvq_decoder_select="mdct lsp sinewin"
utvideo_decoder_select="bswapdsp"
utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
vble_decoder_select="huffyuvdsp"
vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
vc1image_decoder_select="vc1_decoder"
vorbis_decoder_select="mdct"
vorbis_encoder_select="mdct"
vp3_decoder_select="hpeldsp vp3dsp videodsp"
vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
vp6a_decoder_select="vp6_decoder"
vp6f_decoder_select="vp6_decoder"
vp7_decoder_select="h264pred videodsp"
vp8_decoder_select="h264pred videodsp"
vp9_decoder_select="videodsp"
webp_decoder_select="vp8_decoder"
wmapro_decoder_select="mdct sinewin wma_freqs"
wmav1_decoder_select="mdct sinewin wma_freqs"
wmav1_encoder_select="mdct sinewin wma_freqs"
wmav2_decoder_select="mdct sinewin wma_freqs"
wmav2_encoder_select="mdct sinewin wma_freqs"
wmavoice_decoder_select="lsp rdft dct mdct sinewin"
wmv1_decoder_select="h263_decoder"
wmv1_encoder_select="h263_encoder"
wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
wmv2_encoder_select="h263_encoder"
wmv3_decoder_select="vc1_decoder"
wmv3image_decoder_select="wmv3_decoder"
zerocodec_decoder_deps="zlib"
zlib_decoder_deps="zlib"
zlib_encoder_deps="zlib"
zmbv_decoder_deps="zlib"
zmbv_encoder_deps="zlib"
# hardware accelerators
dxva2_deps="dxva2api_h"
vaapi_deps="va_va_h"
vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
h263_vaapi_hwaccel_deps="vaapi"
h263_vaapi_hwaccel_select="h263_decoder"
h263_vdpau_hwaccel_deps="vdpau"
h263_vdpau_hwaccel_select="h263_decoder"
h264_dxva2_hwaccel_deps="dxva2"
h264_dxva2_hwaccel_select="h264_decoder"
h264_vaapi_hwaccel_deps="vaapi"
h264_vaapi_hwaccel_select="h264_decoder"
h264_vda_hwaccel_deps="vda"
h264_vda_hwaccel_select="h264_decoder"
h264_vda_old_hwaccel_deps="vda"
h264_vda_old_hwaccel_select="h264_decoder"
h264_vdpau_hwaccel_deps="vdpau"
h264_vdpau_hwaccel_select="h264_decoder"
mpeg1_vdpau_hwaccel_deps="vdpau"
mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
mpeg2_dxva2_hwaccel_deps="dxva2"
mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
mpeg2_vaapi_hwaccel_deps="vaapi"
mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
mpeg2_vdpau_hwaccel_deps="vdpau"
mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
mpeg4_vaapi_hwaccel_deps="vaapi"
mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
mpeg4_vdpau_hwaccel_deps="vdpau"
mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
vc1_dxva2_hwaccel_deps="dxva2"
vc1_dxva2_hwaccel_select="vc1_decoder"
vc1_vaapi_hwaccel_deps="vaapi"
vc1_vaapi_hwaccel_select="vc1_decoder"
vc1_vdpau_hwaccel_deps="vdpau"
vc1_vdpau_hwaccel_select="vc1_decoder"
wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
# parsers
h264_parser_select="h264_decoder"
mpegvideo_parser_select="mpegvideo"
mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
vc1_parser_select="mpegvideo startcode"
# external libraries
libfaac_encoder_deps="libfaac"
libfaac_encoder_select="audio_frame_queue"
libfdk_aac_decoder_deps="libfdk_aac"
libfdk_aac_encoder_deps="libfdk_aac"
libfdk_aac_encoder_select="audio_frame_queue"
libgsm_decoder_deps="libgsm"
libgsm_encoder_deps="libgsm"
libgsm_ms_decoder_deps="libgsm"
libgsm_ms_encoder_deps="libgsm"
libilbc_decoder_deps="libilbc"
libilbc_encoder_deps="libilbc"
libmp3lame_encoder_deps="libmp3lame"
libmp3lame_encoder_select="audio_frame_queue"
libopencore_amrnb_decoder_deps="libopencore_amrnb"
libopencore_amrnb_encoder_deps="libopencore_amrnb"
libopencore_amrnb_encoder_select="audio_frame_queue"
libopencore_amrwb_decoder_deps="libopencore_amrwb"
libopenjpeg_decoder_deps="libopenjpeg"
libopenjpeg_encoder_deps="libopenjpeg"
libopus_decoder_deps="libopus"
libopus_encoder_deps="libopus"
libopus_encoder_select="audio_frame_queue"
libschroedinger_decoder_deps="libschroedinger"
libschroedinger_encoder_deps="libschroedinger"
libspeex_decoder_deps="libspeex"
libspeex_encoder_deps="libspeex"
libspeex_encoder_select="audio_frame_queue"
libtheora_encoder_deps="libtheora"
libtwolame_encoder_deps="libtwolame"
libvo_aacenc_encoder_deps="libvo_aacenc"
libvo_aacenc_encoder_select="audio_frame_queue"
libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
libvorbis_encoder_deps="libvorbis"
libvorbis_encoder_select="audio_frame_queue"
libvpx_vp8_decoder_deps="libvpx"
libvpx_vp8_encoder_deps="libvpx"
libvpx_vp9_decoder_deps="libvpx"
libvpx_vp9_encoder_deps="libvpx"
libwavpack_encoder_deps="libwavpack"
libwebp_encoder_deps="libwebp"
libx264_encoder_deps="libx264"
libx265_encoder_deps="libx265"
libxavs_encoder_deps="libxavs"
libxvid_encoder_deps="libxvid"
# demuxers / muxers
ac3_demuxer_select="ac3_parser"
asf_demuxer_select="riffdec"
asf_muxer_select="riffenc"
asf_stream_muxer_select="asf_muxer"
avi_demuxer_select="riffdec"
avi_muxer_select="riffenc"
avisynth_demuxer_deps="avisynth"
avisynth_demuxer_select="riffdec"
caf_demuxer_select="riffdec"
dash_muxer_select="mp4_muxer"
dirac_demuxer_select="dirac_parser"
dv_demuxer_select="dvprofile"
dv_muxer_select="dvprofile"
dxa_demuxer_select="riffdec"
eac3_demuxer_select="ac3_parser"
f4v_muxer_select="mov_muxer"
flac_demuxer_select="flac_parser"
hds_muxer_select="flv_muxer"
hls_muxer_select="mpegts_muxer"
ipod_muxer_select="mov_muxer"
ismv_muxer_select="mov_muxer"
matroska_audio_muxer_select="matroska_muxer"
matroska_demuxer_select="riffdec"
matroska_demuxer_suggest="bzlib lzo zlib"
matroska_muxer_select="riffenc"
mmf_muxer_select="riffenc"
mov_demuxer_select="riffdec"
mov_demuxer_suggest="zlib"
mov_muxer_select="riffenc rtpenc_chain"
mp3_demuxer_select="mpegaudio_parser"
mp4_muxer_select="mov_muxer"
mpegts_muxer_select="adts_muxer latm_muxer"
mpegtsraw_demuxer_select="mpegts_demuxer"
mxf_d10_muxer_select="mxf_muxer"
nut_muxer_select="riffenc"
nuv_demuxer_select="riffdec"
oga_muxer_select="ogg_muxer"
ogg_demuxer_select="golomb"
opus_muxer_select="ogg_muxer"
psp_muxer_select="mov_muxer"
rtp_demuxer_select="sdp_demuxer"
rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
rtsp_demuxer_select="http_protocol rtpdec"
rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
sap_demuxer_select="sdp_demuxer"
sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
sdp_demuxer_select="rtpdec"
smoothstreaming_muxer_select="ismv_muxer"
spdif_muxer_select="aac_parser"
spx_muxer_select="ogg_muxer"
tak_demuxer_select="tak_parser"
tg2_muxer_select="mov_muxer"
tgp_muxer_select="mov_muxer"
w64_demuxer_select="wav_demuxer"
wav_demuxer_select="riffdec"
wav_muxer_select="riffenc"
webm_muxer_select="riffenc"
wtv_demuxer_select="riffdec"
xmv_demuxer_select="riffdec"
xwma_demuxer_select="riffdec"
# indevs / outdevs
alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
alsa_outdev_deps="alsa_asoundlib_h"
bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
dv1394_indev_deps="dv1394"
dv1394_indev_select="dv_demuxer"
fbdev_indev_deps="linux_fb_h"
jack_indev_deps="jack_jack_h pthreads"
libcdio_indev_deps="libcdio"
libdc1394_indev_deps="libdc1394"
oss_indev_deps_any="soundcard_h sys_soundcard_h"
oss_outdev_deps_any="soundcard_h sys_soundcard_h"
pulse_indev_deps="libpulse"
sndio_indev_deps="sndio_h"
sndio_outdev_deps="sndio_h"
v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
vfwcap_indev_extralibs="-lavicap32"
x11grab_indev_deps="x11grab"
x11grab_xcb_indev_deps="libxcb"
# protocols
ffrtmpcrypt_protocol_deps="!librtmp_protocol"
ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
ffrtmpcrypt_protocol_select="tcp_protocol"
ffrtmphttp_protocol_deps="!librtmp_protocol"
ffrtmphttp_protocol_select="http_protocol"
gopher_protocol_select="network"
http_protocol_select="tcp_protocol"
httpproxy_protocol_select="tcp_protocol"
https_protocol_select="tls_protocol"
icecast_protocol_select="http_protocol"
librtmp_protocol_deps="librtmp"
librtmpe_protocol_deps="librtmp"
librtmps_protocol_deps="librtmp"
librtmpt_protocol_deps="librtmp"
librtmpte_protocol_deps="librtmp"
mmsh_protocol_select="http_protocol"
mmst_protocol_select="network"
rtmp_protocol_deps="!librtmp_protocol"
rtmp_protocol_select="tcp_protocol"
rtmpe_protocol_select="ffrtmpcrypt_protocol"
rtmps_protocol_deps="!librtmp_protocol"
rtmps_protocol_select="tls_protocol"
rtmpt_protocol_select="ffrtmphttp_protocol"
rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
rtp_protocol_select="udp_protocol"
sctp_protocol_deps="struct_sctp_event_subscribe"
sctp_protocol_select="network"
srtp_protocol_select="rtp_protocol"
tcp_protocol_select="network"
tls_protocol_deps_any="openssl gnutls"
tls_protocol_select="tcp_protocol"
udp_protocol_select="network"
unix_protocol_deps="sys_un_h"
unix_protocol_select="network"
# filters
blackframe_filter_deps="gpl"
boxblur_filter_deps="gpl"
bs2b_filter_deps="libbs2b"
cropdetect_filter_deps="gpl"
delogo_filter_deps="gpl"
drawtext_filter_deps="libfreetype"
frei0r_filter_deps="frei0r dlopen"
frei0r_filter_extralibs='$ldl'
frei0r_src_filter_deps="frei0r dlopen"
frei0r_src_filter_extralibs='$ldl'
hqdn3d_filter_deps="gpl"
interlace_filter_deps="gpl"
ocv_filter_deps="libopencv"
resample_filter_deps="avresample"
scale_filter_deps="swscale"
# examples
avcodec_example_deps="avcodec avutil"
filter_audio_example_deps="avfilter avutil"
metadata_example_deps="avformat avutil"
output_example_deps="avcodec avformat avutil swscale"
transcode_aac_example_deps="avcodec avformat avresample"
# libraries, in linking order
avcodec_deps="avutil"
avdevice_deps="avformat avcodec avutil"
avfilter_deps="avutil"
avformat_deps="avcodec avutil"
avresample_deps="avutil"
swscale_deps="avutil"
# programs
avconv_deps="avcodec avfilter avformat avresample swscale"
avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
fps_filter null_filter resample_filter scale_filter
setpts_filter trim_filter"
avplay_deps="avcodec avformat avresample swscale sdl"
avplay_libs='$sdl_libs'
avplay_select="rdft"
avprobe_deps="avcodec avformat"
# documentation
pod2man_deps="doc"
texi2html_deps="doc"
# default parameters
logfile="config.log"
# installation paths
prefix_default="/usr/local"
bindir_default='${prefix}/bin'
datadir_default='${prefix}/share/avconv'
docdir_default='${prefix}/share/doc/libav'
incdir_default='${prefix}/include'
libdir_default='${prefix}/lib'
mandir_default='${prefix}/share/man'
shlibdir_default="$libdir_default"
# toolchain
ar_default="ar"
cc_default="gcc"
host_cc_default="gcc"
cp_f="cp -f"
ln_s="ln -s -f"
nm_default="nm -g"
objformat="elf"
pkg_config_default=pkg-config
ranlib="ranlib"
strip="strip"
yasmexe="yasm"
# machine
arch_default=$(uname -m)
cpu="generic"
intrinsics="none"
# OS
target_os_default=$(tolower $(uname -s))
host_os=$target_os_default
# configurable options
enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
enable asm
enable debug
enable doc
enable faan faandct faanidct
enable optimizations
enable safe_bitstream_reader
enable static
enable swscale_alpha
# By default, enable only those hwaccels that have no external dependencies.
enable dxva2 vda vdpau
# build settings
SHFLAGS='-shared -Wl,-soname,$$(@F)'
LIBPREF="lib"
LIBSUF=".a"
FULLNAME='$(NAME)$(BUILDSUF)'
LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
SLIBPREF="lib"
SLIBSUF=".so"
SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
asflags_filter=echo
cflags_filter=echo
ldflags_filter=echo
AS_C='-c'
AS_O='-o $@'
CC_C='-c'
CC_E='-E -o $@'
CC_O='-o $@'
LD_O='-o $@'
LD_LIB='-l%'
LD_PATH='-L'
HOSTCC_C='-c'
HOSTCC_E='-E -o $@'
HOSTCC_O='-o $@'
HOSTLD_O='-o $@'
host_libs='-lm'
host_cflags_filter=echo
host_ldflags_filter=echo
target_path='$(CURDIR)'
# since the object filename is not given with the -MM flag, the compiler
# is only able to print the basename, and we must add the path ourselves
DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
DEPFLAGS='-MM'
# find source path
if test -f configure; then
source_path=.
else
source_path=$(cd $(dirname "$0"); pwd)
echo "$source_path" | grep -q '[[:blank:]]' &&
die "Out of tree builds are impossible with whitespace in source path."
test -e "$source_path/config.h" &&
die "Out of tree builds are impossible with config.h in source dir."
fi
for v in "$@"; do
r=${v#*=}
l=${v%"$r"}
r=$(sh_quote "$r")
LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
done
find_things(){
thing=$1
pattern=$2
file=$source_path/$3
sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
}
ENCODER_LIST=$(find_things encoder ENC libavcodec/allcodecs.c)
DECODER_LIST=$(find_things decoder DEC libavcodec/allcodecs.c)
HWACCEL_LIST=$(find_things hwaccel HWACCEL libavcodec/allcodecs.c)
PARSER_LIST=$(find_things parser PARSER libavcodec/allcodecs.c)
BSF_LIST=$(find_things bsf BSF libavcodec/allcodecs.c)
MUXER_LIST=$(find_things muxer _MUX libavformat/allformats.c)
DEMUXER_LIST=$(find_things demuxer DEMUX libavformat/allformats.c)
OUTDEV_LIST=$(find_things outdev OUTDEV libavdevice/alldevices.c)
INDEV_LIST=$(find_things indev _IN libavdevice/alldevices.c)
PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
FILTER_LIST=$(find_things filter FILTER libavfilter/allfilters.c)
ALL_COMPONENTS="
$BSF_LIST
$DECODER_LIST
$DEMUXER_LIST
$ENCODER_LIST
$FILTER_LIST
$HWACCEL_LIST
$INDEV_LIST
$MUXER_LIST
$OUTDEV_LIST
$PARSER_LIST
$PROTOCOL_LIST
"
for n in $COMPONENT_LIST; do
v=$(toupper ${n%s})_LIST
eval enable \$$v
eval ${n}_if_any="\$$v"
done
enable $ARCH_EXT_LIST
die_unknown(){
echo "Unknown option \"$1\"."
echo "See $0 --help for available options."
exit 1
}
print_3_columns() {
cat | tr ' ' '\n' | sort | pr -r -3 -t
}
show_list() {
suffix=_$1
shift
echo $* | sed s/$suffix//g | print_3_columns
exit 0
}
rand_list(){
IFS=', '
set -- $*
unset IFS
for thing; do
comp=${thing%:*}
prob=${thing#$comp}
prob=${prob#:}
is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
echo "prob ${prob:-0.5}"
printf '%s\n' $comp
done
}
do_random(){
action=$1
shift
random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
$action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
}
for opt do
optval="${opt#*=}"
case "$opt" in
--extra-ldflags=*)
add_ldflags $optval
;;
--extra-ldexeflags=*)
add_ldexeflags $optval
;;
--extra-libs=*)
add_extralibs $optval
;;
--disable-devices)
disable $INDEV_LIST $OUTDEV_LIST
;;
--enable-debug=*)
debuglevel="$optval"
;;
--disable-programs)
disable $PROGRAM_LIST
;;
--disable-everything)
map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
;;
--disable-all)
map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
disable $LIBRARY_LIST $PROGRAM_LIST doc
;;
--enable-random|--disable-random)
action=${opt%%-random}
do_random ${action#--} $COMPONENT_LIST
;;
--enable-random=*|--disable-random=*)
action=${opt%%-random=*}
do_random ${action#--} $optval
;;
--enable-*=*|--disable-*=*)
eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
eval list=\$$(toupper $thing)_LIST
name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
$action $(filter "$name" $list)
;;
--enable-avserver|--disable-avserver*)
warn "avserver has been removed, the ${opt} option is only"\
"provided for compatibility and will be removed in the future"
;;
--enable-?*|--disable-?*)
eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
if is_in $option $COMPONENT_LIST; then
test $action = disable && action=unset
eval $action \$$(toupper ${option%s})_LIST
elif is_in $option $CMDLINE_SELECT; then
$action $option
else
die_unknown $opt
fi
;;
--list-*)
NAME="${opt#--list-}"
is_in $NAME $COMPONENT_LIST || die_unknown $opt
NAME=${NAME%s}
eval show_list $NAME \$$(toupper $NAME)_LIST
;;
--help|-h) show_help
;;
*)
optname="${opt%%=*}"
optname="${optname#--}"
optname=$(echo "$optname" | sed 's/-/_/g')
if is_in $optname $CMDLINE_SET; then
eval $optname='$optval'
elif is_in $optname $CMDLINE_APPEND; then
append $optname "$optval"
else
die_unknown $opt
fi
;;
esac
done
disabled logging && logfile=/dev/null
echo "# $0 $LIBAV_CONFIGURATION" > $logfile
set >> $logfile
test -n "$cross_prefix" && enable cross_compile
if enabled cross_compile; then
test -n "$arch" && test -n "$target_os" ||
die "Must specify target arch and OS when cross-compiling"
fi
ar_default="${cross_prefix}${ar_default}"
cc_default="${cross_prefix}${cc_default}"
nm_default="${cross_prefix}${nm_default}"
pkg_config_default="${cross_prefix}${pkg_config_default}"
ranlib="${cross_prefix}${ranlib}"
strip="${cross_prefix}${strip}"
sysinclude_default="${sysroot}/usr/include"
case "$toolchain" in
clang-asan)
cc_default="clang"
add_cflags -fsanitize=address
add_ldflags -fsanitize=address
;;
clang-tsan)
cc_default="clang"
add_cflags -fsanitize=thread -pie
add_ldflags -fsanitize=thread -pie
;;
clang-usan)
cc_default="clang"
add_cflags -fsanitize=undefined -O1
add_ldflags -fsanitize=undefined
;;
gcc-asan)
cc_default="gcc"
add_cflags -fsanitize=address
add_ldflags -fsanitize=address
;;
gcc-tsan)
cc_default="gcc"
add_cflags -fsanitize=thread -pie -fPIC
add_ldflags -fsanitize=thread -pie -fPIC
;;
gcc-usan)
cc_default="gcc"
add_cflags -fsanitize=undefined
add_ldflags -fsanitize=undefined
;;
valgrind-massif)
target_exec_default="valgrind"
target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
;;
valgrind-memcheck)
target_exec_default="valgrind"
target_exec_args="--track-origins=yes --leak-check=full"
;;
msvc)
# Check whether the current MSVC version needs the C99 converter.
# From MSVC 2013 (compiler major version 18) onwards, it does actually
# support enough of C99 to build libav. Default to the new
# behaviour if the regexp was unable to match anything, since this
# successfully parses the version number of existing supported
# versions that require the converter (MSVC 2010 and 2012).
cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
cc_default="cl"
else
cc_default="c99wrap cl"
fi
ld_default="link"
nm_default="dumpbin -symbols"
ar_default="lib"
target_os_default="win32"
# Use a relative path for TMPDIR. This makes sure all the
# ffconf temp files are written with a relative path, avoiding
# issues with msys/win32 path conversion for MSVC parameters
# such as -Fo<file> or -out:<file>.
TMPDIR=.
;;
icl)
cc_default="icl"
ld_default="xilink"
nm_default="dumpbin -symbols"
ar_default="xilib"
target_os_default="win32"
TMPDIR=.
;;
gcov)
add_cflags -fprofile-arcs -ftest-coverage
add_ldflags -fprofile-arcs -ftest-coverage
;;
hardened)
add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
add_cflags -fno-strict-overflow -fstack-protector-all
add_ldflags -Wl,-z,relro -Wl,-z,now
;;
?*)
die "Unknown toolchain $toolchain"
;;
esac
set_default arch cc pkg_config sysinclude target_exec target_os
enabled cross_compile || host_cc_default=$cc
set_default host_cc
if ! $pkg_config --version >/dev/null 2>&1; then
warn "$pkg_config not found, library detection may fail."
pkg_config=false
fi
exesuf() {
case $1 in
mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
esac
}
EXESUF=$(exesuf $target_os)
HOSTEXESUF=$(exesuf $host_os)
# set temporary file name
: ${TMPDIR:=$TEMPDIR}
: ${TMPDIR:=$TMP}
: ${TMPDIR:=/tmp}
if ! check_cmd mktemp -u XXXXXX; then
# simple replacement for missing mktemp
# NOT SAFE FOR GENERAL USE
mktemp(){
echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
}
fi
tmpfile(){
tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
(set -C; exec > $tmp) 2>/dev/null ||
die "Unable to create temporary file in $TMPDIR."
append TMPFILES $tmp
eval $1=$tmp
}
trap 'rm -f -- $TMPFILES' EXIT
tmpfile TMPASM .asm
tmpfile TMPC .c
tmpfile TMPE $EXESUF
tmpfile TMPH .h
tmpfile TMPO .o
tmpfile TMPS .S
tmpfile TMPSH .sh
tmpfile TMPV .ver
unset -f mktemp
chmod +x $TMPE
# make sure we can execute files in $TMPDIR
cat > $TMPSH 2>> $logfile <<EOF
#! /bin/sh
EOF
chmod +x $TMPSH >> $logfile 2>&1
if ! $TMPSH >> $logfile 2>&1; then
cat <<EOF
Unable to create and execute files in $TMPDIR. Set the TMPDIR environment
variable to another directory and make sure that it is not mounted noexec.
EOF
die "Sanity test failed."
fi
armasm_flags(){
for flag; do
case $flag in
# Filter out MSVC cl.exe options from cflags that shouldn't
# be passed to gas-preprocessor
-M[TD]*) ;;
*) echo $flag ;;
esac
done
}
ccc_flags(){
for flag; do
case $flag in
-std=c99) echo -c99 ;;
-mcpu=*) echo -arch ${flag#*=} ;;
-mieee) echo -ieee ;;
-O*|-fast) echo $flag ;;
-fno-math-errno) echo -assume nomath_errno ;;
-g) echo -g3 ;;
-Wall) echo -msg_enable level2 ;;
-Wno-pointer-sign) echo -msg_disable ptrmismatch1 ;;
-Wl,*) echo $flag ;;
-f*|-W*) ;;
*) echo $flag ;;
esac
done
}
cparser_flags(){
for flag; do
case $flag in
-Wno-switch) echo -Wno-switch-enum ;;
-Wno-format-zero-length) ;;
-Wdisabled-optimization) ;;
-Wno-pointer-sign) echo -Wno-other ;;
*) echo $flag ;;
esac
done
}
msvc_common_flags(){
for flag; do
case $flag in
# In addition to specifying certain flags under the compiler
# specific filters, they must be specified here as well or else the
# generic catch all at the bottom will print the original flag.
-Wall) ;;
-std=c99) ;;
# Common flags
-fomit-frame-pointer) ;;
-g) echo -Z7 ;;
-fno-math-errno) ;;
-fno-common) ;;
-fno-signed-zeros) ;;
-fPIC) ;;
-mthumb) ;;
-march=*) ;;
-lz) echo zlib.lib ;;
-lavifil32) echo vfw32.lib ;;
-lavicap32) echo vfw32.lib user32.lib ;;
-l*) echo ${flag#-l}.lib ;;
*) echo $flag ;;
esac
done
}
msvc_flags(){
msvc_common_flags "$@"
for flag; do
case $flag in
-Wall) echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
-wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
-wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
-wd4273 -wd4701 ;;
esac
done
}
icl_flags(){
msvc_common_flags "$@"
for flag; do
case $flag in
# Despite what Intel's documentation says -Wall, which is supported
# on Windows, does enable remarks so disable them here.
-Wall) echo $flag -Qdiag-disable:remark ;;
-std=c99) echo -Qstd=c99 ;;
esac
done
}
pgi_flags(){
for flag; do
case $flag in
-flto) echo -Mipa=fast,libopt,libinline,vestigial ;;
-fomit-frame-pointer) echo -Mnoframe ;;
-g) echo -gopt ;;
*) echo $flag ;;
esac
done
}
suncc_flags(){
for flag; do
case $flag in
-march=*|-mcpu=*)
case "${flag#*=}" in
native) echo -xtarget=native ;;
v9|niagara) echo -xarch=sparc ;;
ultrasparc) echo -xarch=sparcvis ;;
ultrasparc3|niagara2) echo -xarch=sparcvis2 ;;
i586|pentium) echo -xchip=pentium ;;
i686|pentiumpro|pentium2) echo -xtarget=pentium_pro ;;
pentium3*|c3-2) echo -xtarget=pentium3 ;;
pentium-m) echo -xarch=sse2 -xchip=pentium3 ;;
pentium4*) echo -xtarget=pentium4 ;;
prescott|nocona) echo -xarch=sse3 -xchip=pentium4 ;;
*-sse3) echo -xarch=sse3 ;;
core2) echo -xarch=ssse3 -xchip=core2 ;;
corei7) echo -xarch=sse4_2 -xchip=nehalem ;;
corei7-avx) echo -xarch=avx -xchip=sandybridge ;;
amdfam10|barcelona|bdver*) echo -xarch=sse4_1 ;;
athlon-4|athlon-[mx]p) echo -xarch=ssea ;;
k8|opteron|athlon64|athlon-fx)
echo -xarch=sse2a ;;
athlon*) echo -xarch=pentium_proa ;;
esac
;;
-std=c99) echo -xc99 ;;
-fomit-frame-pointer) echo -xregs=frameptr ;;
-fPIC) echo -KPIC -xcode=pic32 ;;
-W*,*) echo $flag ;;
-f*-*|-W*|-mimpure-text) ;;
-shared) echo -G ;;
*) echo $flag ;;
esac
done
}
tms470_flags(){
for flag; do
case $flag in
-march=*|-mcpu=*)
case "${flag#*=}" in
armv7-a|cortex-a*) echo -mv=7a8 ;;
armv7-r|cortex-r*) echo -mv=7r4 ;;
armv7-m|cortex-m*) echo -mv=7m3 ;;
armv6*|arm11*) echo -mv=6 ;;
armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
echo -mv=5e ;;
armv4*|arm7*|arm9[24]*) echo -mv=4 ;;
esac
;;
-mfpu=neon) echo --float_support=vfpv3 --neon ;;
-mfpu=vfp) echo --float_support=vfpv2 ;;
-mfpu=vfpv3) echo --float_support=vfpv3 ;;
-mfpu=vfpv3-d16) echo --float_support=vfpv3d16 ;;
-msoft-float) echo --float_support=vfplib ;;
-O[0-3]|-mf=*) echo $flag ;;
-g) echo -g -mn ;;
-pds=*) echo $flag ;;
-D*|-I*) echo $flag ;;
--gcc|--abi=*) echo $flag ;;
-me) echo $flag ;;
esac
done
}
probe_cc(){
pfx=$1
_cc=$2
unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
unset _ld_o _ldflags _ld_lib _ld_path
unset _depflags _DEPCMD _DEPFLAGS
_flags_filter=echo
if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
_type=llvm_gcc
gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
_ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
_depflags='-MMD -MF $(@:.o=.d) -MT $@'
_cflags_speed='-O3'
_cflags_size='-Os'
elif $_cc -v 2>&1 | grep -qi ^gcc; then
_type=gcc
gcc_version=$($_cc --version | head -n1)
gcc_basever=$($_cc -dumpversion)
gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
_ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
if ! $_cc -dumpversion | grep -q '^2\.'; then
_depflags='-MMD -MF $(@:.o=.d) -MT $@'
fi
_cflags_speed='-O3'
_cflags_size='-Os'
elif $_cc --version 2>/dev/null | grep -q ^icc; then
_type=icc
_ident=$($_cc --version | head -n1)
_depflags='-MMD'
_cflags_speed='-O3'
_cflags_size='-Os'
_cflags_noopt='-O1'
elif $_cc -v 2>&1 | grep -q xlc; then
_type=xlc
_ident=$($_cc -qversion 2>/dev/null | head -n1)
_cflags_speed='-O5'
_cflags_size='-O5 -qcompact'
elif $_cc -V 2>/dev/null | grep -q Compaq; then
_type=ccc
_ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
_DEPFLAGS='-M'
_cflags_speed='-fast'
_cflags_size='-O1'
_flags_filter=ccc_flags
elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
test -d "$sysroot" || die "No valid sysroot specified."
_type=armcc
_ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
armcc_conf="$PWD/armcc.conf"
$_cc --arm_linux_configure \
--arm_linux_config_file="$armcc_conf" \
--configure_sysroot="$sysroot" \
--configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
die "Error creating armcc configuration file."
$_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
_flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
as_default="${cross_prefix}gcc"
_depflags='-MMD'
_cflags_speed='-O3'
_cflags_size='-Os'
elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
_type=tms470
_ident=$($_cc -version | head -n1 | tr -s ' ')
_flags='--gcc --abi=eabi -me'
_cc_e='-ppl -fe=$@'
_cc_o='-fe=$@'
_depflags='-ppa -ppd=$(@:.o=.d)'
_cflags_speed='-O3 -mf=5'
_cflags_size='-O3 -mf=2'
_flags_filter=tms470_flags
elif $_cc -v 2>&1 | grep -q clang; then
_type=clang
_ident=$($_cc --version | head -n1)
_depflags='-MMD -MF $(@:.o=.d) -MT $@'
_cflags_speed='-O3'
_cflags_size='-Os'
elif $_cc -V 2>&1 | grep -q Sun; then
_type=suncc
_ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
_DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
_DEPFLAGS='-xM1 -xc99'
_ldflags='-std=c99'
_cflags_speed='-O5'
_cflags_size='-O5 -xspace'
_flags_filter=suncc_flags
elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
_type=pathscale
_ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
_depflags='-MMD -MF $(@:.o=.d) -MT $@'
_cflags_speed='-O2'
_cflags_size='-Os'
_flags_filter='filter_out -Wdisabled-optimization'
elif $_cc -v 2>&1 | grep -q Open64; then
_type=open64
_ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
_depflags='-MMD -MF $(@:.o=.d) -MT $@'
_cflags_speed='-O2'
_cflags_size='-Os'
_flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
elif $_cc -V 2>&1 | grep -q Portland; then
_type=pgi
_ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
opt_common='-alias=ansi -Mdse -Mlre -Mpre'
_cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
_cflags_size="-O2 -Munroll=c:1 $opt_common"
_cflags_noopt="-O1"
_flags_filter=pgi_flags
elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
_type=armasm
_ident=$($_cc | head -n1)
# 4509: "This form of conditional instruction is deprecated"
_flags="-nologo -ignore 4509"
_flags_filter=armasm_flags
elif $_cc 2>&1 | grep -q Microsoft; then
_type=msvc
_ident=$($cc 2>&1 | head -n1)
_DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
_DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
_cflags_speed="-O2"
_cflags_size="-O1"
if $_cc 2>&1 | grep -q Linker; then
_ld_o='-out:$@'
else
_ld_o='-Fe$@'
fi
_cc_o='-Fo$@'
_cc_e='-P -Fi$@'
_flags_filter=msvc_flags
_ld_lib='lib%.a'
_ld_path='-libpath:'
_flags='-nologo'
_cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
if [ $pfx = hostcc ]; then
append _cflags -Dsnprintf=_snprintf
fi
elif $_cc 2>&1 | grep -q Intel; then
_type=icl
_ident=$($cc 2>&1 | head -n1)
_depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
# Not only is O3 broken on 13.x+ but it is slower on all previous
# versions (tested) as well.
_cflags_speed="-O2"
_cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
if $_cc 2>&1 | grep -q Linker; then
_ld_o='-out:$@'
else
_ld_o='-Fe$@'
fi
_cc_o='-Fo$@'
_cc_e='-P'
_flags_filter=icl_flags
_ld_lib='lib%.a'
_ld_path='-libpath:'
# -Qdiag-error to make icl error when seeing certain unknown arguments
_flags='-nologo -Qdiag-error:4044,10157'
# -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
# with MSVC which enables it by default.
_cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
if [ $pfx = hostcc ]; then
append _cflags -Dsnprintf=_snprintf
fi
elif $_cc --version 2>/dev/null | grep -q ^cparser; then
_type=cparser
_ident=$($_cc --version | head -n1)
_depflags='-MMD'
_cflags_speed='-O4'
_cflags_size='-O2'
_flags_filter=cparser_flags
fi
eval ${pfx}_type=\$_type
eval ${pfx}_ident=\$_ident
}
set_ccvars(){
eval ${1}_C=\${_cc_c-\${${1}_C}}
eval ${1}_E=\${_cc_e-\${${1}_E}}
eval ${1}_O=\${_cc_o-\${${1}_O}}
if [ -n "$_depflags" ]; then
eval ${1}_DEPFLAGS=\$_depflags
else
eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
eval DEP${1}FLAGS=\$_flags
fi
}
probe_cc cc "$cc"
cflags_filter=$_flags_filter
cflags_speed=$_cflags_speed
cflags_size=$_cflags_size
cflags_noopt=$_cflags_noopt
add_cflags $_flags $_cflags
cc_ldflags=$_ldflags
set_ccvars CC
probe_cc hostcc "$host_cc"
host_cflags_filter=$_flags_filter
add_host_cflags $_flags $_cflags
set_ccvars HOSTCC
test -n "$cc_type" && enable $cc_type ||
warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
: ${as_default:=$cc}
: ${dep_cc_default:=$cc}
: ${ld_default:=$cc}
: ${host_ld_default:=$host_cc}
set_default ar as dep_cc ld host_ld
probe_cc as "$as"
asflags_filter=$_flags_filter
add_asflags $_flags $_cflags
set_ccvars AS
probe_cc ld "$ld"
ldflags_filter=$_flags_filter
add_ldflags $_flags $_ldflags
test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
LD_O=${_ld_o-$LD_O}
LD_LIB=${_ld_lib-$LD_LIB}
LD_PATH=${_ld_path-$LD_PATH}
probe_cc hostld "$host_ld"
host_ldflags_filter=$_flags_filter
add_host_ldflags $_flags $_ldflags
HOSTLD_O=${_ld_o-$HOSTLD_O}
if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
probe_cc depcc "$dep_cc"
CCDEP=${_DEPCMD:-$DEPCMD}
CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
DEPCCFLAGS=$_flags
fi
if $ar 2>&1 | grep -q Microsoft; then
arflags="-nologo"
ar_o='-out:$@'
elif $ar 2>&1 | grep -q 'Texas Instruments'; then
arflags="rq"
ar_o='$@'
elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
arflags='-Xany -r -c'
ar_o='$@'
else
arflags="rc"
ar_o='$@'
fi
add_cflags $extra_cflags
add_asflags $extra_cflags
if test -n "$sysroot"; then
case "$cc_type" in
gcc|llvm_gcc|clang)
add_cppflags --sysroot="$sysroot"
add_ldflags --sysroot="$sysroot"
;;
tms470)
add_cppflags -I"$sysinclude"
add_ldflags --sysroot="$sysroot"
;;
esac
fi
if test "$cpu" = host; then
enabled cross_compile &&
die "--cpu=host makes no sense when cross-compiling."
case "$cc_type" in
gcc|llvm_gcc)
check_native(){
$cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
sed -n "/cc1.*$1=/{
s/.*$1=\\([^ ]*\\).*/\\1/
p
q
}" $TMPE
}
cpu=$(check_native -march || check_native -mcpu)
;;
esac
test "${cpu:-host}" = host &&
die "--cpu=host not supported with compiler $cc"
fi
# Deal with common $arch aliases
case "$arch" in
aarch64|arm64)
arch="aarch64"
;;
arm*)
arch="arm"
;;
mips*|IP*)
arch="mips"
;;
parisc*|hppa*)
arch="parisc"
;;
"Power Macintosh"|ppc*|powerpc*)
arch="ppc"
;;
s390|s390x)
arch="s390"
;;
sh4|sh)
arch="sh4"
;;
sun4u|sparc*)
arch="sparc"
;;
tilegx|tile-gx)
arch="tilegx"
;;
i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
arch="x86"
;;
esac
is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
enable $arch
# Add processor-specific flags
if enabled aarch64; then
case $cpu in
armv*)
cpuflags="-march=$cpu"
;;
*)
cpuflags="-mcpu=$cpu"
;;
esac
elif enabled alpha; then
cpuflags="-mcpu=$cpu"
elif enabled arm; then
check_arm_arch() {
check_cpp_condition stddef.h \
"defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
$cpuflags
}
probe_arm_arch() {
if check_arm_arch 4; then echo armv4;
elif check_arm_arch 4T; then echo armv4t;
elif check_arm_arch 5; then echo armv5;
elif check_arm_arch 5E; then echo armv5e;
elif check_arm_arch 5T; then echo armv5t;
elif check_arm_arch 5TE; then echo armv5te;
elif check_arm_arch 5TEJ; then echo armv5te;
elif check_arm_arch 6; then echo armv6;
elif check_arm_arch 6J; then echo armv6j;
elif check_arm_arch 6K; then echo armv6k;
elif check_arm_arch 6Z; then echo armv6z;
elif check_arm_arch 6ZK; then echo armv6zk;
elif check_arm_arch 6T2; then echo armv6t2;
elif check_arm_arch 7; then echo armv7;
elif check_arm_arch 7A 7_A; then echo armv7-a;
elif check_arm_arch 7R 7_R; then echo armv7-r;
elif check_arm_arch 7M 7_M; then echo armv7-m;
elif check_arm_arch 7EM 7E_M; then echo armv7-m;
elif check_arm_arch 8A 8_A; then echo armv8-a;
fi
}
[ "$cpu" = generic ] && cpu=$(probe_arm_arch)
case $cpu in
armv*)
cpuflags="-march=$cpu"
subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
;;
*)
cpuflags="-mcpu=$cpu"
case $cpu in
cortex-a*) subarch=armv7a ;;
cortex-r*) subarch=armv7r ;;
cortex-m*) enable thumb; subarch=armv7m ;;
arm11*) subarch=armv6 ;;
arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
armv4*|arm7*|arm9[24]*) subarch=armv4 ;;
*) subarch=$(probe_arm_arch) ;;
esac
;;
esac
case "$subarch" in
armv5t*) enable fast_clz ;;
armv[6-8]*) enable fast_clz fast_unaligned ;;
esac
elif enabled avr32; then
case $cpu in
ap7[02]0[0-2])
subarch="avr32_ap"
cpuflags="-mpart=$cpu"
;;
ap)
subarch="avr32_ap"
cpuflags="-march=$cpu"
;;
uc3[ab]*)
subarch="avr32_uc"
cpuflags="-mcpu=$cpu"
;;
uc)
subarch="avr32_uc"
cpuflags="-march=$cpu"
;;
esac
elif enabled bfin; then
cpuflags="-mcpu=$cpu"
elif enabled mips; then
cpuflags="-march=$cpu"
elif enabled ppc; then
disable ldbrx
case $(tolower $cpu) in
601|ppc601|powerpc601)
cpuflags="-mcpu=601"
disable altivec
;;
603*|ppc603*|powerpc603*)
cpuflags="-mcpu=603"
disable altivec
;;
604*|ppc604*|powerpc604*)
cpuflags="-mcpu=604"
disable altivec
;;
g3|75*|ppc75*|powerpc75*)
cpuflags="-mcpu=750"
disable altivec
;;
g4|745*|ppc745*|powerpc745*)
cpuflags="-mcpu=7450"
;;
74*|ppc74*|powerpc74*)
cpuflags="-mcpu=7400"
;;
g5|970|ppc970|powerpc970)
cpuflags="-mcpu=970"
;;
power[3-7]*)
cpuflags="-mcpu=$cpu"
;;
cell)
cpuflags="-mcpu=cell"
enable ldbrx
;;
e500mc)
cpuflags="-mcpu=e500mc"
disable altivec
;;
e500v2)
cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
disable altivec
disable dcbzl
;;
e500)
cpuflags="-mcpu=8540 -mhard-float"
disable altivec
disable dcbzl
;;
esac
elif enabled sparc; then
case $cpu in
cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
cpuflags="-mcpu=$cpu"
;;
ultrasparc*|niagara[234])
cpuflags="-mcpu=$cpu"
;;
esac
elif enabled x86; then
case $cpu in
i[345]86|pentium)
cpuflags="-march=$cpu"
disable i686
disable mmx
;;
# targets that do NOT support nopl and conditional mov (cmov)
pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
cpuflags="-march=$cpu"
disable i686
;;
# targets that do support nopl and conditional mov (cmov)
i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
cpuflags="-march=$cpu"
enable i686
enable fast_cmov
;;
# targets that do support conditional mov but on which it's slow
pentium4|pentium4m|prescott|nocona)
cpuflags="-march=$cpu"
enable i686
disable fast_cmov
;;
esac
fi
if [ "$cpu" != generic ]; then
add_cflags $cpuflags
add_asflags $cpuflags
fi
# compiler sanity check
check_exec <<EOF
int main(void){ return 0; }
EOF
if test "$?" != 0; then
echo "$cc is unable to create an executable file."
if test -z "$cross_prefix" && ! enabled cross_compile ; then
echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
echo "Only do this if you know what cross compiling means."
fi
die "C compiler test failed."
fi
add_cppflags -D_ISOC99_SOURCE
check_cflags -std=c99
check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
#include <stdlib.h>
EOF
check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
#include <stdlib.h>
EOF
add_host_cppflags -D_ISOC99_SOURCE
check_host_cflags -std=c99
check_host_cflags -Wall
check_host_cflags -O3
check_64bit(){
arch32=$1
arch64=$2
expr=$3
check_code cc "" "int test[2*($expr) - 1]" &&
subarch=$arch64 || subarch=$arch32
}
case "$arch" in
aarch64|alpha|ia64)
spic=$shared
;;
mips)
check_64bit mips mips64 '_MIPS_SIM > 1'
spic=$shared
;;
parisc)
check_64bit parisc parisc64 'sizeof(void *) > 4'
spic=$shared
;;
ppc)
check_64bit ppc ppc64 'sizeof(void *) > 4'
spic=$shared
;;
s390)
check_64bit s390 s390x 'sizeof(void *) > 4'
spic=$shared
;;
sparc)
check_64bit sparc sparc64 'sizeof(void *) > 4'
spic=$shared
;;
x86)
check_64bit x86_32 x86_64 'sizeof(void *) > 4'
if test "$subarch" = "x86_64"; then
spic=$shared
fi
;;
esac
enable $subarch
enabled spic && enable_weak pic
# OS specific
case $target_os in
aix)
SHFLAGS=-shared
add_cppflags '-I\$(SRC_PATH)/compat/aix'
enabled shared && add_ldflags -Wl,-brtl
;;
android)
disable symver
enable section_data_rel_ro
SLIB_INSTALL_NAME='$(SLIBNAME)'
SLIB_INSTALL_LINKS=
# soname not set on purpose
SHFLAGS=-shared
;;
haiku)
prefix_default="/boot/common"
network_extralibs="-lnetwork"
host_libs=
;;
sunos)
SHFLAGS='-shared -Wl,-h,$$(@F)'
enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
network_extralibs="-lsocket -lnsl"
# When using suncc to build, the Solaris linker will mark
# an executable with each instruction set encountered by
# the Solaris assembler. As our libraries contain their own
# guards for processor-specific code, instead suppress
# generation of the HWCAPS ELF section on Solaris x86 only.
enabled_all suncc x86 &&
echo "hwcap_1 = OVERRIDE;" > mapfile &&
add_ldflags -Wl,-M,mapfile
nm_default='nm -P -g'
;;
netbsd)
disable symver
oss_indev_extralibs="-lossaudio"
oss_outdev_extralibs="-lossaudio"
;;
openbsd|bitrig)
disable symver
SHFLAGS='-shared'
SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
SLIB_INSTALL_LINKS=
oss_indev_extralibs="-lossaudio"
oss_outdev_extralibs="-lossaudio"
;;
dragonfly)
disable symver
;;
freebsd)
;;
bsd/os)
add_extralibs -lpoll -lgnugetopt
;;
darwin)
enabled ppc && add_asflags -force_cpusubtype_ALL
SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
add_ldflags -Wl,-dynamic,-search_paths_first
SLIBSUF=".dylib"
SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
objformat="macho"
enabled x86_64 && objformat="macho64"
enabled_any pic shared ||
{ check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
;;
mingw32*)
if test $target_os = "mingw32ce"; then
disable network
else
target_os=mingw32
fi
LIBTARGET=i386
if enabled x86_64; then
LIBTARGET="i386:x86-64"
elif enabled arm; then
LIBTARGET=arm-wince
fi
check_ldflags -Wl,--nxcompat
check_ldflags -Wl,--dynamicbase
shlibdir_default="$bindir_default"
SLIBPREF=""
SLIBSUF=".dll"
SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
SLIB_INSTALL_LINKS=
SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
objformat="win32"
dlltool="${cross_prefix}dlltool"
ranlib=:
enable dos_paths
;;
win32|win64)
disable symver
if enabled shared; then
# Link to the import library instead of the normal static library
# for shared libs.
LD_LIB='%.lib'
# Cannot build both shared and static libs with MSVC or icl.
disable static
fi
shlibdir_default="$bindir_default"
SLIBPREF=""
SLIBSUF=".dll"
SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
SLIB_INSTALL_LINKS=
SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
objformat="win32"
ranlib=:
enable dos_paths
;;
cygwin*)
target_os=cygwin
shlibdir_default="$bindir_default"
SLIBPREF="cyg"
SLIBSUF=".dll"
SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
SLIB_INSTALL_LINKS=
SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
objformat="win32"
enable dos_paths
;;
*-dos|freedos|opendos)
network_extralibs="-lsocket"
objformat="coff"
enable dos_paths
add_cppflags -U__STRICT_ANSI__
;;
linux)
enable dv1394
enable section_data_rel_ro
;;
irix*)
target_os=irix
ranlib="echo ignoring ranlib"
;;
os/2*)
ln_s="cp -f"
objformat="aout"
add_cppflags -D_GNU_SOURCE
add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
LIBSUF="_s.a"
SLIBPREF=""
SLIBSUF=".dll"
SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
echo PROTMODE >> $(SUBDIR)$(NAME).def; \
echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
echo EXPORTS >> $(SUBDIR)$(NAME).def; \
emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
enable dos_paths
;;
gnu/kfreebsd)
add_cppflags -D_BSD_SOURCE
;;
gnu)
;;
qnx)
add_cppflags -D_QNX_SOURCE
network_extralibs="-lsocket"
;;
symbian)
SLIBSUF=".dll"
enable dos_paths
add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
add_ldflags -Wl,--target1-abs,--no-undefined \
-Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
-Wl,--entry=_E32Startup -Wl,-u,_E32Startup
add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
-l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
-l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
;;
osf1)
add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
;;
minix)
;;
plan9)
add_cppflags -D_C99_SNPRINTF_EXTENSION \
-D_REENTRANT_SOURCE \
-D_RESEARCH_SOURCE \
-DFD_SETSIZE=96 \
-DHAVE_SOCK_OPTS
add_compat strtod.o strtod=avpriv_strtod
network_extralibs='-lbsd'
exeobjs=compat/plan9/main.o
cp_f='cp'
;;
none)
;;
*)
die "Unknown OS '$target_os'."
;;
esac
# determine libc flavour
probe_libc(){
pfx=$1
pfx_no_=${pfx%_}
# uclibc defines __GLIBC__, so it needs to be checked before glibc.
if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
eval ${pfx}libc_type=uclibc
add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
eval ${pfx}libc_type=glibc
add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
# MinGW headers can be installed on Cygwin, so check for newlib first.
elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
eval ${pfx}libc_type=newlib
add_${pfx}cppflags -U__STRICT_ANSI__
# MinGW64 is backwards compatible with MinGW32, so check for it first.
elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
eval ${pfx}libc_type=mingw64
add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
eval test \$${pfx_no_}cc_type = "gcc" &&
add_${pfx}cppflags -D__printf__=__gnu_printf__
elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION" ||
check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
eval ${pfx}libc_type=mingw32
check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
(__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
die "ERROR: MinGW32 runtime version must be >= 3.15."
add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
eval test \$${pfx_no_}cc_type = "gcc" &&
add_${pfx}cppflags -D__printf__=__gnu_printf__
elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
eval ${pfx}libc_type=msvcrt
# The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
# 0x601 by default unless something else is set by the user.
# This can easily lead to us detecting functions only present
# in such new versions and producing binaries requiring windows 7.0.
# Therefore explicitly set the default to XP unless the user has
# set something else on the command line.
check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
add_${pfx}cppflags -D_WIN32_WINNT=0x0502
elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
eval ${pfx}libc_type=klibc
elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
eval ${pfx}libc_type=bionic
elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
eval ${pfx}libc_type=solaris
add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
else
eval ${pfx}libc_type=default
add_${pfx}cppflags -D_DEFAULT_SOURCE
fi
}
probe_libc
test -n "$libc_type" && enable libc_$libc_type
probe_libc host_
test -n "$host_libc_type" && enable host_libc_$host_libc_type
case $libc_type in
bionic)
add_compat strtod.o strtod=avpriv_strtod
;;
msvcrt)
add_compat strtod.o strtod=avpriv_strtod
add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf \
_snprintf=avpriv_snprintf \
vsnprintf=avpriv_vsnprintf
;;
esac
# hacks for compiler/libc/os combinations
if enabled_all tms470 libc_glibc; then
CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
add_cppflags -D__USER_LABEL_PREFIX__=
add_cppflags -D__builtin_memset=memset
add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
add_cflags -pds=48 # incompatible redefinition of macro
fi
if enabled_all ccc libc_glibc; then
add_ldflags -Wl,-z,now # calls to libots crash without this
fi
check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
add_cppflags '-I\$(SRC_PATH)/compat/float'
esc(){
echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
}
echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
set_default $PATHS_LIST
set_default nm
# we need to build at least one lib type
if ! enabled_any static shared; then
cat <<EOF
At least one library type must be built.
Specify --enable-static to build the static libraries or --enable-shared to
build the shared libraries as well. To only build the shared libraries specify
--disable-static in addition to --enable-shared.
EOF
exit 1;
fi
die_license_disabled() {
enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
}
die_license_disabled gpl libcdio
die_license_disabled gpl libx264
die_license_disabled gpl libx265
die_license_disabled gpl libxavs
die_license_disabled gpl libxvid
die_license_disabled gpl x11grab
die_license_disabled nonfree libfaac
die_license_disabled nonfree libfdk_aac
die_license_disabled nonfree openssl
die_license_disabled version3 libopencore_amrnb
die_license_disabled version3 libopencore_amrwb
die_license_disabled version3 libvo_aacenc
die_license_disabled version3 libvo_amrwbenc
enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
disabled optimizations || check_cflags -fomit-frame-pointer
enable_weak_pic() {
disabled pic && return
enable pic
add_cppflags -DPIC
case "$target_os" in
mingw*|cygwin*)
;;
*)
add_cflags -fPIC
;;
esac
add_asflags -fPIC
}
enabled pic && enable_weak_pic
check_cc <<EOF || die "Symbol mangling check failed."
int ff_extern;
EOF
sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
extern_prefix=${sym%%ff_extern*}
check_cc <<EOF && enable_weak inline_asm
void foo(void) { __asm__ volatile ("" ::); }
EOF
_restrict=
for restrict_keyword in restrict __restrict__ __restrict; do
check_cc <<EOF && _restrict=$restrict_keyword && break
void foo(char * $restrict_keyword p);
EOF
done
check_cc <<EOF && enable pragma_deprecated
void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
EOF
check_cc <<EOF && enable attribute_packed
struct { int x; } __attribute__((packed)) x;
EOF
check_cc <<EOF && enable attribute_may_alias
union { int x; } __attribute__((may_alias)) x;
EOF
check_cc <<EOF || die "endian test failed"
unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
EOF
od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
check_gas() {
log "check_gas using '$as' as AS"
# :vararg is used on aarch64, arm and ppc altivec
check_as <<EOF || return 1
.macro m n, y:vararg=0
\n: .int \y
.endm
m x
EOF
# .altmacro is only used in arm asm
! enabled arm || check_as <<EOF || return 1
.altmacro
EOF
enable gnu_as
return 0
}
if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
nogas=:
enabled_any arm aarch64 && nogas=die
enabled_all ppc altivec && nogas=warn
as_noop=-v
case $as_type in
arm*) gaspp_as_type=armasm; as_noop=-h ;;
gcc) gaspp_as_type=gas ;;
*) gaspp_as_type=$as_type ;;
esac
[ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
if ! check_gas ; then
as=${gas:=$as}
check_gas || \
$nogas "GNU assembler not found, install/update gas-preprocessor"
fi
check_as <<EOF && enable as_func
.func test
.endfunc
EOF
fi
check_inline_asm inline_asm_labels '"1:\n"'
if enabled aarch64; then
enabled armv8 && check_insn armv8 'prfm pldl1strm, [x0]'
# internal assembler in clang 3.3 does not support this instruction
enabled neon && check_insn neon 'ext v0.8B, v0.8B, v1.8B, #1'
enabled vfp && check_insn vfp 'fmadd d0, d0, d1, d2'
map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
elif enabled alpha; then
check_cflags -mieee
elif enabled arm; then
check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
enabled thumb && check_cflags -mthumb || check_cflags -marm
if check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
enable vfp_args
elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
case "${cross_prefix:-$cc}" in
*hardfloat*) enable vfp_args; fpabi=vfp ;;
*) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
__asm__ (".eabi_attribute 28, 1");
int main(void) { return 0; }
EOF
esac
warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
fi
enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
enabled armv6 && check_insn armv6 'sadd16 r0, r0, r0'
enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
enabled neon && check_insn neon 'vadd.i16 q0, q0, q0'
enabled vfp && check_insn vfp 'fadds s0, s0, s0'
enabled vfpv3 && check_insn vfpv3 'vmov.f32 s0, #1.0'
[ $target_os = linux ] || [ $target_os = android ] ||
map 'enabled_any ${v}_external ${v}_inline || disable $v' \
$ARCH_EXT_LIST_ARM
check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
check_as <<EOF && enable as_dn_directive
ra .dn d0.i16
.unreq ra
EOF
[ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
elif enabled mips; then
check_inline_asm loongson '"dmult.g $1, $2, $3"'
elif enabled parisc; then
if enabled gcc; then
case $($cc -dumpversion) in
4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
esac
fi
elif enabled ppc; then
enable local_aligned_8 local_aligned_16
check_inline_asm dcbzl '"dcbzl 0, %0" :: "r"(0)'
check_inline_asm ibm_asm '"add 0, 0, 0"'
check_inline_asm ppc4xx '"maclhw r10, r11, r12"'
check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
# AltiVec flags: The FSF version of GCC differs from the Apple version
if enabled altivec; then
check_cflags -maltivec -mabi=altivec &&
{ check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
check_cflags -faltivec
# check if our compiler supports Motorola AltiVec C API
check_cc <<EOF || disable altivec
$inc_altivec_h
int main(void) {
vector signed int v1 = (vector signed int) { 0 };
vector signed int v2 = (vector signed int) { 1 };
v1 = vec_add(v1, v2);
return 0;
}
EOF
enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
fi
elif enabled x86; then
check_builtin rdtsc intrin.h "__rdtsc()"
check_builtin mm_empty mmintrin.h "_mm_empty()"
enable local_aligned_8 local_aligned_16
# check whether EBP is available on x86
# As 'i' is stored on the stack, this program will crash
# if the base pointer is used to access it because the
# base pointer is cleared in the inline assembly code.
check_exec_crash <<EOF && enable ebp_available
volatile int i=0;
__asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
return i;
EOF
# check whether EBX is available on x86
check_inline_asm ebx_available '""::"b"(0)' &&
check_inline_asm ebx_available '"":::"%ebx"'
# check whether xmm clobbers are supported
check_inline_asm xmm_clobbers '"":::"%xmm0"'
# check whether binutils is new enough to compile SSSE3/MMXEXT
enabled ssse3 && check_inline_asm ssse3_inline '"pabsw %xmm0, %xmm0"'
enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
if ! disabled_any asm mmx yasm; then
if check_cmd $yasmexe --version; then
enabled x86_64 && yasm_extra="-m amd64"
yasm_debug="-g dwarf2"
elif check_cmd nasm -v; then
yasmexe=nasm
yasm_debug="-g -F dwarf"
enabled x86_64 && test "$objformat" = elf && objformat=elf64
fi
YASMFLAGS="-f $objformat $yasm_extra"
enabled pic && append YASMFLAGS "-DPIC"
test -n "$extern_prefix" && append YASMFLAGS "-DPREFIX"
case "$objformat" in
elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
esac
check_yasm "movbe ecx, [5]" && enable yasm ||
die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
check_yasm "vfmadd132ps ymm0, ymm1, ymm2" || disable fma3_external
check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
check_yasm "CPU amdnop" || disable cpunop
fi
case "$cpu" in
athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
disable fast_clz
;;
esac
fi
check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
check_ldflags -Wl,--as-needed
if check_func dlopen; then
ldl=
elif check_func dlopen -ldl; then
ldl=-ldl
fi
if ! disabled network; then
check_func getaddrinfo $network_extralibs
check_func getservbyport $network_extralibs
check_func inet_aton $network_extralibs
check_type netdb.h "struct addrinfo"
check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
check_type poll.h "struct pollfd"
check_type netinet/sctp.h "struct sctp_event_subscribe"
check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
check_type netinet/in.h "struct sockaddr_in6"
check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
check_type "sys/types.h sys/socket.h" socklen_t
# Prefer arpa/inet.h over winsock2
if check_header arpa/inet.h ; then
check_func closesocket
elif check_header winsock2.h ; then
check_func_headers winsock2.h closesocket -lws2 &&
network_extralibs="-lws2" ||
{ check_func_headers winsock2.h closesocket -lws2_32 &&
network_extralibs="-lws2_32"; } || disable winsock2_h network
check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
check_type ws2tcpip.h socklen_t
check_type ws2tcpip.h "struct addrinfo"
check_type ws2tcpip.h "struct group_source_req"
check_type ws2tcpip.h "struct ip_mreq_source"
check_type ws2tcpip.h "struct ipv6_mreq"
check_type winsock2.h "struct pollfd"
check_struct winsock2.h "struct sockaddr" sa_len
check_type ws2tcpip.h "struct sockaddr_in6"
check_type ws2tcpip.h "struct sockaddr_storage"
else
disable network
fi
fi
check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
check_builtin MemoryBarrier windows.h "MemoryBarrier()"
check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
check_func_headers malloc.h _aligned_malloc && enable aligned_malloc
check_func ${malloc_prefix}memalign && enable memalign
check_func ${malloc_prefix}posix_memalign && enable posix_memalign
check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
check_func fcntl
check_func fork
check_func gethrtime
check_func getopt
check_func getrusage
check_func gettimeofday
check_func gmtime_r
check_func isatty
check_func localtime_r
check_func mach_absolute_time
check_func mkstemp
check_func mmap
check_func mprotect
# Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
check_func sched_getaffinity
check_func setrlimit
check_func strerror_r
check_func strptime
check_func sysconf
check_func sysctl
check_func usleep
check_func_headers io.h setmode
check_func_headers stdlib.h getenv
check_func_headers windows.h CoTaskMemFree -lole32
check_func_headers windows.h GetProcessAffinityMask
check_func_headers windows.h GetProcessTimes
check_func_headers windows.h GetSystemTimeAsFileTime
check_func_headers windows.h MapViewOfFile
check_func_headers windows.h MoveFileExA
check_func_headers windows.h SetConsoleTextAttribute
check_func_headers windows.h Sleep
check_func_headers windows.h VirtualAlloc
check_struct windows.h "CONDITION_VARIABLE" Ptr
check_header direct.h
check_header dlfcn.h
check_header dxva.h
check_header dxva2api.h
check_header io.h
check_header mach/mach_time.h
check_header malloc.h
check_header poll.h
check_header sys/mman.h
check_header sys/param.h
check_header sys/resource.h
check_header sys/select.h
check_header sys/time.h
check_header sys/un.h
check_header unistd.h
check_header vdpau/vdpau.h
check_header vdpau/vdpau_x11.h
check_header VideoDecodeAcceleration/VDADecoder.h
check_header windows.h
check_header X11/extensions/XvMClib.h
check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
if ! disabled w32threads && ! enabled pthreads; then
check_func_headers "windows.h process.h" _beginthreadex &&
enable w32threads || disable w32threads
fi
# check for some common methods of building with pthread support
# do this before the optional library checks as some of them require pthreads
if ! disabled pthreads && ! enabled w32threads; then
enable pthreads
if check_func pthread_join -pthread; then
add_cflags -pthread
add_extralibs -pthread
elif check_func pthread_join -pthreads; then
add_cflags -pthreads
add_extralibs -pthreads
elif check_func pthread_join -lpthreadGC2; then
add_extralibs -lpthreadGC2
elif check_lib pthread.h pthread_join -lpthread; then
:
elif ! check_func pthread_join; then
disable pthreads
fi
fi
disabled zlib || check_lib zlib.h zlibVersion -lz || disable zlib
disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
check_lib math.h sin -lm && LIBM="-lm"
enabled vaapi && require vaapi va/va.h vaInitialize -lva
atan2f_args=2
ldexpf_args=2
powf_args=2
for func in $MATH_FUNCS; do
eval check_mathfunc $func \${${func}_args:-1}
done
# these are off by default, so fail if requested and not available
enabled avisynth && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
{ check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
enabled frei0r && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
enabled gnutls && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
enabled libbs2b && require_pkg_config libbs2b bs2b.h bs2b_open
enabled libfaac && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
enabled libfdk_aac && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
enabled libfontconfig && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
enabled libfreetype && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
enabled libgsm && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
check_lib "${gsm_hdr}" gsm_create -lgsm && break;
done || die "ERROR: libgsm not found"; }
enabled libilbc && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
enabled libmp3lame && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
enabled libopencv && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
enabled libopenjpeg && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
{ require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
enabled libopus && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
enabled librtmp && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
enabled libspeex && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
enabled libtheora && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
enabled libtwolame && require libtwolame twolame.h twolame_init -ltwolame
enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
enabled libvorbis && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
enabled libvpx && {
enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
die "ERROR: libvpx decoder version must be >=0.9.1"; }
enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
die "ERROR: libvpx encoder version must be >=0.9.6"; }
enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
enabled libwavpack && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput -lwavpack
enabled libwebp && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
enabled libx264 && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
{ check_cpp_condition x264.h "X264_BUILD >= 118" ||
die "ERROR: libx264 version must be >= 0.118."; }
enabled libx265 && require_pkg_config x265 x265.h x265_encoder_encode &&
{ check_cpp_condition x265.h "X265_BUILD >= 17" ||
die "ERROR: libx265 version must be >= 17."; }
enabled libxavs && require libxavs xavs.h xavs_encoder_encode -lxavs
enabled libxvid && require libxvid xvid.h xvid_global -lxvidcore
enabled openssl && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
die "ERROR: openssl not found"; }
if enabled gnutls; then
{ check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
{ check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
fi
# libdc1394 check
if enabled libdc1394; then
{ check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
enable libdc1394_2; } ||
{ check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
enable libdc1394_1; } ||
die "ERROR: No version of libdc1394 found "
fi
if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
enable sdl
fi
pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
check_header linux/fb.h
check_header linux/videodev2.h
check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
check_header sys/videoio.h
check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
# check that WM_CAP_DRIVER_CONNECT is defined to the proper value
# w32api 3.12 had it defined wrong
check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
# check for ioctl_meteor.h, ioctl_bt848.h and alternatives
{ check_header dev/bktr/ioctl_meteor.h &&
check_header dev/bktr/ioctl_bt848.h; } ||
{ check_header machine/ioctl_meteor.h &&
check_header machine/ioctl_bt848.h; } ||
{ check_header dev/video/meteor/ioctl_meteor.h &&
check_header dev/video/bktr/ioctl_bt848.h; } ||
check_header dev/ic/bt8xx.h
check_header sndio.h
check_header sys/soundcard.h
check_header soundcard.h
enabled_any alsa_indev alsa_outdev &&
check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
check_func jack_port_get_latency_range -ljack
enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
if enabled libcdio; then
check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
fi
check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
if enabled libxcb || enabled x11grab && ! disabled libxcb; then
check_pkg_config xcb xcb/xcb.h xcb_connect || {
enabled libxcb && die "ERROR: libxcb not found";
} && disable x11grab && enable libxcb
disabled libxcb_shm ||
check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
enabled libxcb_shm && die "ERROR: libxcb_shm not found";
} && check_header sys/shm.h && enable libxcb_shm
disabled libxcb_xfixes ||
check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
} && enable libxcb_xfixes
add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
fi
if enabled x11grab; then
enabled xlib || die "ERROR: Xlib not found"
require Xext X11/extensions/XShm.h XShmCreateImage -lXext
require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
fi
enabled vdpau &&
check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
disable vdpau
enabled vdpau && enabled xlib &&
check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
prepend avconv_libs $($ldflags_filter "-lvdpau") &&
enable vdpau_x11
enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
# add some useful compiler flags if supported
check_cflags -Wdeclaration-after-statement
check_cflags -Wall
check_cflags -Wdisabled-optimization
check_cflags -Wpointer-arith
check_cflags -Wredundant-decls
check_cflags -Wcast-qual
check_cflags -Wwrite-strings
check_cflags -Wtype-limits
check_cflags -Wundef
check_cflags -Wmissing-prototypes
check_cflags -Wstrict-prototypes
enabled extra_warnings && check_cflags -Winline
check_disable_warning(){
warning_flag=-W${1#-Wno-}
test_cflags $warning_flag && add_cflags $1
}
check_disable_warning -Wno-parentheses
check_disable_warning -Wno-switch
check_disable_warning -Wno-format-zero-length
check_disable_warning -Wno-pointer-sign
# add some linker flags
check_ldflags -Wl,--warn-common
check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
# add some strip flags
# -wN '..@*' is more selective than -x, but not available everywhere.
check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
enabled neon_clobber_test &&
check_ldflags -Wl,--wrap,avcodec_open2 \
-Wl,--wrap,avcodec_decode_audio4 \
-Wl,--wrap,avcodec_decode_video2 \
-Wl,--wrap,avcodec_decode_subtitle2 \
-Wl,--wrap,avcodec_encode_audio2 \
-Wl,--wrap,avcodec_encode_video2 \
-Wl,--wrap,avcodec_encode_subtitle \
-Wl,--wrap,avresample_convert ||
disable neon_clobber_test
enabled xmm_clobber_test &&
check_ldflags -Wl,--wrap,avcodec_open2 \
-Wl,--wrap,avcodec_decode_audio4 \
-Wl,--wrap,avcodec_decode_video2 \
-Wl,--wrap,avcodec_decode_subtitle2 \
-Wl,--wrap,avcodec_encode_audio2 \
-Wl,--wrap,avcodec_encode_video2 \
-Wl,--wrap,avcodec_encode_subtitle \
-Wl,--wrap,avresample_convert \
-Wl,--wrap,sws_scale ||
disable xmm_clobber_test
echo "X{};" > $TMPV
if test_ldflags -Wl,--version-script,$TMPV; then
append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
check_cc <<EOF && enable symver_asm_label
void ff_foo(void) __asm__ ("av_foo@VERSION");
void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
EOF
check_cc <<EOF && enable symver_gnu_asm
__asm__(".symver ff_foo,av_foo@VERSION");
void ff_foo(void) {}
EOF
fi
if [ -z "$optflags" ]; then
if enabled small; then
optflags=$cflags_size
elif enabled optimizations; then
optflags=$cflags_speed
else
optflags=$cflags_noopt
fi
fi
check_optflags(){
check_cflags "$@"
enabled lto && check_ldflags "$@"
}
if enabled lto; then
test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
check_cflags -flto
check_ldflags -flto $cpuflags
fi
check_optflags $optflags
check_optflags -fno-math-errno
check_optflags -fno-signed-zeros
if enabled icc; then
# Just warnings, no remarks
check_cflags -w1
# -wd: Disable following warnings
# 144, 167, 556: -Wno-pointer-sign
# 1292: attribute "foo" ignored
# 1419: external declaration in primary source file
# 10006: ignoring unknown option -fno-signed-zeros
# 10148: ignoring unknown option -Wno-parentheses
# 10156: ignoring option '-W'; no argument required
check_cflags -wd144,167,556,1292,1419,10006,10148,10156
# 11030: Warning unknown option --as-needed
# 10156: ignoring option '-export'; no argument required
check_ldflags -wd10156,11030
# icc 11.0 and 11.1 work with ebp_available, but don't pass the test
enable ebp_available
if enabled x86_32; then
icc_version=$($cc -dumpversion)
test ${icc_version%%.*} -ge 11 &&
check_cflags -falign-stack=maintain-16-byte ||
disable aligned_stack
fi
elif enabled ccc; then
# disable some annoying warnings
add_cflags -msg_disable bitnotint
add_cflags -msg_disable mixfuncvoid
add_cflags -msg_disable nonstandcast
add_cflags -msg_disable unsupieee
elif enabled gcc; then
check_optflags -fno-tree-vectorize
check_cflags -Werror=implicit-function-declaration
check_cflags -Werror=missing-prototypes
check_cflags -Werror=return-type
check_cflags -Werror=declaration-after-statement
check_cflags -Werror=vla
enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
elif enabled llvm_gcc; then
check_cflags -mllvm -stack-alignment=16
elif enabled clang; then
check_cflags -mllvm -stack-alignment=16
check_cflags -Qunused-arguments
check_cflags -Werror=implicit-function-declaration
check_cflags -Werror=missing-prototypes
check_cflags -Werror=return-type
elif enabled cparser; then
add_cflags -Wno-missing-variable-declarations
add_cflags -Wno-empty-statement
elif enabled armcc; then
add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
# 2523: use of inline assembly is deprecated
add_cflags -W${armcc_opt},--diag_suppress=2523
add_cflags -W${armcc_opt},--diag_suppress=1207
add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
add_cflags -W${armcc_opt},--diag_suppress=167 # pointer sign
add_cflags -W${armcc_opt},--diag_suppress=513 # pointer sign
elif enabled tms470; then
add_cflags -pds=824 -pds=837
disable inline_asm
elif enabled pathscale; then
add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
elif enabled_any msvc icl; then
enabled x86_32 && disable aligned_stack
enabled_all x86_32 debug && add_cflags -Oy-
enabled debug && add_ldflags -debug
enable pragma_deprecated
if enabled icl; then
# -Qansi-alias is basically -fstrict-aliasing, but does not work
# (correctly) on icl 13.x.
check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
add_cflags -Qansi-alias
# icl will pass the inline asm tests but inline asm is currently
# not supported (build will fail)
disable inline_asm
fi
fi
case $as_type in
clang)
add_asflags -Qunused-arguments
;;
esac
case $ld_type in
clang)
check_ldflags -Qunused-arguments
;;
esac
case $target_os in
osf1)
enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
;;
plan9)
add_cppflags -Dmain=plan9_main
;;
esac
enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
check_deps $CONFIG_LIST \
$CONFIG_EXTRA \
$HAVE_LIST \
$ALL_COMPONENTS \
enabled_all dxva2 CoTaskMemFree &&
prepend avconv_libs $($ldflags_filter "-lole32") &&
enable dxva2_lib
! enabled_any memalign posix_memalign aligned_malloc &&
enabled simd_align_16 && enable memalign_hack
map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
for thread in $THREADS_LIST; do
if enabled $thread; then
test -n "$thread_type" &&
die "ERROR: Only one thread type must be selected." ||
thread_type="$thread"
fi
done
enabled zlib && add_cppflags -DZLIB_CONST
# conditional library dependencies, in linking order
enabled movie_filter && prepend avfilter_deps "avformat avcodec"
enabled resample_filter && prepend avfilter_deps "avresample"
enabled scale_filter && prepend avfilter_deps "swscale"
enabled opus_decoder && prepend avcodec_deps "avresample"
expand_deps(){
lib_deps=${1}_deps
eval "deps=\$$lib_deps"
append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
unique $lib_deps
}
map 'expand_deps $v' $LIBRARY_LIST
echo "install prefix $prefix"
echo "source path $source_path"
echo "C compiler $cc"
echo "C library $libc_type"
if test "$host_cc" != "$cc"; then
echo "host C compiler $host_cc"
echo "host C library $host_libc_type"
fi
echo "ARCH $arch ($cpu)"
if test "$build_suffix" != ""; then
echo "build suffix $build_suffix"
fi
if test "$extra_version" != ""; then
echo "version string suffix $extra_version"
fi
echo "big-endian ${bigendian-no}"
echo "runtime cpu detection ${runtime_cpudetect-no}"
if enabled x86; then
echo "${yasmexe} ${yasm-no}"
echo "MMX enabled ${mmx-no}"
echo "MMXEXT enabled ${mmxext-no}"
echo "3DNow! enabled ${amd3dnow-no}"
echo "3DNow! extended enabled ${amd3dnowext-no}"
echo "SSE enabled ${sse-no}"
echo "SSSE3 enabled ${ssse3-no}"
echo "AVX enabled ${avx-no}"
echo "XOP enabled ${xop-no}"
echo "FMA3 enabled ${fma3-no}"
echo "FMA4 enabled ${fma4-no}"
echo "i686 features enabled ${i686-no}"
echo "CMOV is fast ${fast_cmov-no}"
echo "EBX available ${ebx_available-no}"
echo "EBP available ${ebp_available-no}"
fi
if enabled aarch64; then
echo "NEON enabled ${neon-no}"
echo "VFP enabled ${vfp-no}"
fi
if enabled arm; then
echo "ARMv5TE enabled ${armv5te-no}"
echo "ARMv6 enabled ${armv6-no}"
echo "ARMv6T2 enabled ${armv6t2-no}"
echo "VFP enabled ${vfp-no}"
echo "NEON enabled ${neon-no}"
fi
if enabled ppc; then
echo "AltiVec enabled ${altivec-no}"
echo "PPC 4xx optimizations ${ppc4xx-no}"
echo "dcbzl available ${dcbzl-no}"
fi
echo "debug symbols ${debug-no}"
echo "optimize for size ${small-no}"
echo "optimizations ${optimizations-no}"
echo "static ${static-no}"
echo "shared ${shared-no}"
echo "new filter support ${avfilter-no}"
echo "network support ${network-no}"
echo "threading support ${thread_type-no}"
echo "safe bitstream reader ${safe_bitstream_reader-no}"
echo "SDL support ${sdl-no}"
test -n "$random_seed" &&
echo "random seed ${random_seed}"
echo
echo "External libraries:"
print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
echo
for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
echo "Enabled ${type}s:"
eval list=\$$(toupper $type)_LIST
print_enabled '_*' $list | print_3_columns
echo
done
license="LGPL version 2.1 or later"
if enabled nonfree; then
license="nonfree and unredistributable"
elif enabled gplv3; then
license="GPL version 3 or later"
elif enabled lgplv3; then
license="LGPL version 3 or later"
elif enabled gpl; then
license="GPL version 2 or later"
fi
echo "License: $license"
echo "Creating config.mak and config.h..."
test -e Makefile || echo "include $source_path/Makefile" > Makefile
config_files="$TMPH config.mak"
cat > config.mak <<EOF
# Automatically generated by configure - do not modify!
LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
prefix=$prefix
LIBDIR=\$(DESTDIR)$libdir
SHLIBDIR=\$(DESTDIR)$shlibdir
INCDIR=\$(DESTDIR)$incdir
BINDIR=\$(DESTDIR)$bindir
DATADIR=\$(DESTDIR)$datadir
DOCDIR=\$(DESTDIR)$docdir
MANDIR=\$(DESTDIR)$mandir
SRC_PATH=$source_path
CC_IDENT=$cc_ident
ARCH=$arch
INTRINSICS=$intrinsics
CC=$cc
AS=$as
LD=$ld
DEPCC=$dep_cc
DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
DEPAS=$as
DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
YASM=$yasmexe
DEPYASM=$yasmexe
AR=$ar
ARFLAGS=$arflags
AR_O=$ar_o
RANLIB=$ranlib
STRIP=$strip
LN_S=$ln_s
CPPFLAGS=$CPPFLAGS
CFLAGS=$CFLAGS
ASFLAGS=$ASFLAGS
AS_C=$AS_C
AS_O=$AS_O
CC_C=$CC_C
CC_E=$CC_E
CC_O=$CC_O
LD_O=$LD_O
LD_LIB=$LD_LIB
LD_PATH=$LD_PATH
DLLTOOL=$dlltool
LDFLAGS=$LDFLAGS
LDEXEFLAGS=$LDEXEFLAGS
SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
STRIPFLAGS=$STRIPFLAGS
YASMFLAGS=$YASMFLAGS
BUILDSUF=$build_suffix
FULLNAME=$FULLNAME
LIBPREF=$LIBPREF
LIBSUF=$LIBSUF
LIBNAME=$LIBNAME
SLIBPREF=$SLIBPREF
SLIBSUF=$SLIBSUF
EXESUF=$EXESUF
EXTRA_VERSION=$extra_version
CCDEP=$CCDEP
CCDEP_FLAGS=$CCDEP_FLAGS
ASDEP=$ASDEP
ASDEP_FLAGS=$ASDEP_FLAGS
CC_DEPFLAGS=$CC_DEPFLAGS
AS_DEPFLAGS=$AS_DEPFLAGS
HOSTCC=$host_cc
HOSTLD=$host_ld
HOSTCFLAGS=$host_cflags
HOSTCPPFLAGS=$host_cppflags
HOSTEXESUF=$HOSTEXESUF
HOSTLDFLAGS=$host_ldflags
HOSTLIBS=$host_libs
DEPHOSTCC=$host_cc
DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
HOSTCCDEP=$HOSTCCDEP
HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
HOSTCC_C=$HOSTCC_C
HOSTCC_O=$HOSTCC_O
HOSTLD_O=$HOSTLD_O
TARGET_EXEC=$target_exec $target_exec_args
TARGET_PATH=$target_path
TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
CFLAGS-avplay=$sdl_cflags
ZLIB=$($ldflags_filter -lz)
LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
EXTRALIBS=$extralibs
COMPAT_OBJS=$compat_objs
EXEOBJS=$exeobjs
INSTALL=install
LIBTARGET=${LIBTARGET}
SLIBNAME=${SLIBNAME}
SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
EOF
get_version(){
lcname=lib${1}
name=$(toupper $lcname)
file=$source_path/$lcname/version.h
eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
}
map 'get_version $v' $LIBRARY_LIST
map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
print_program_libs(){
eval "program_libs=\$${1}_libs"
eval echo "LIBS-${1}=${program_libs}" >> config.mak
}
map 'print_program_libs $v' $PROGRAM_LIST
cat > $TMPH <<EOF
/* Automatically generated by configure - do not modify! */
#ifndef LIBAV_CONFIG_H
#define LIBAV_CONFIG_H
#define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
#define LIBAV_LICENSE "$(c_escape $license)"
#define AVCONV_DATADIR "$(eval c_escape $datadir)"
#define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
#define restrict $_restrict
#define EXTERN_PREFIX "${extern_prefix}"
#define EXTERN_ASM ${extern_prefix}
#define SLIBSUF "$SLIBSUF"
EOF
test -n "$malloc_prefix" &&
echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
if enabled yasm; then
append config_files $TMPASM
printf '' >$TMPASM
fi
enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
print_config ARCH_ "$config_files" $ARCH_LIST
print_config HAVE_ "$config_files" $HAVE_LIST
print_config CONFIG_ "$config_files" $CONFIG_LIST \
$CONFIG_EXTRA \
$ALL_COMPONENTS \
echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
# Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
cp_if_changed $TMPH config.h
touch .config
enabled yasm && cp_if_changed $TMPASM config.asm
cat > $TMPH <<EOF
/* Generated by ffconf */
#ifndef AVUTIL_AVCONFIG_H
#define AVUTIL_AVCONFIG_H
EOF
print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
cp_if_changed $TMPH libavutil/avconfig.h
test -n "$WARNINGS" && printf "\n$WARNINGS"
# build pkg-config files
lib_version(){
eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
}
pkgconfig_generate(){
name=$1
shortname=${name#lib}${build_suffix}
comment=$2
version=$3
libs=$4
requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
requires=${requires%, }
enabled ${name#lib} || return 0
mkdir -p $name
cat <<EOF > $name/$name.pc
prefix=$prefix
exec_prefix=\${prefix}
libdir=$libdir
includedir=$incdir
Name: $name
Description: $comment
Version: $version
Requires: $(enabled shared || echo $requires)
Requires.private: $(enabled shared && echo $requires)
Conflicts:
Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
Libs.private: $(enabled shared && echo $libs)
Cflags: -I\${includedir}
EOF
cat <<EOF > $name/$name-uninstalled.pc
prefix=
exec_prefix=
libdir=\${pcfiledir}
includedir=${source_path}
Name: $name
Description: $comment
Version: $version
Requires: $requires
Conflicts:
Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
Cflags: -I\${includedir}
EOF
}
pkgconfig_generate libavutil "Libav utility library" "$LIBAVUTIL_VERSION" "$LIBRT $LIBM"
pkgconfig_generate libavcodec "Libav codec library" "$LIBAVCODEC_VERSION" "$extralibs"
pkgconfig_generate libavformat "Libav container format library" "$LIBAVFORMAT_VERSION" "$extralibs"
pkgconfig_generate libavdevice "Libav device handling library" "$LIBAVDEVICE_VERSION" "$extralibs"
pkgconfig_generate libavfilter "Libav video filtering library" "$LIBAVFILTER_VERSION" "$extralibs"
pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$LIBM"
pkgconfig_generate libswscale "Libav image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM"
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