mirror of https://git.ffmpeg.org/ffmpeg.git
configure: check for stdatomic.h
Since this is a C11 feature, it requires -std=c11.
Not actually used for anything yet, that will be added in the following
commits.
This merges libav commit 13f5d2bf75
.
Signed-off-by: Wan-Teh Chang <wtc@google.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
parent
4719e563a4
commit
6a4e24280d
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@ -1189,6 +1189,19 @@ check_cpp_condition(){
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EOF
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EOF
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}
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}
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test_cflags_cpp(){
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log test_cflags_cpp "$@"
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flags=$1
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condition=$2
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shift 2
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set -- $($cflags_filter "$flags")
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check_cpp "$@" <<EOF
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#if !($condition)
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#error "unsatisfied condition: $condition"
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#endif
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EOF
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}
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check_lib(){
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check_lib(){
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log check_lib "$@"
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log check_lib "$@"
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header="$1"
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header="$1"
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@ -1836,6 +1849,7 @@ HEADERS_LIST="
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poll_h
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poll_h
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sndio_h
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sndio_h
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soundcard_h
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soundcard_h
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stdatomic_h
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sys_mman_h
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sys_mman_h
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sys_param_h
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sys_param_h
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sys_resource_h
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sys_resource_h
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@ -4579,7 +4593,15 @@ fi
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add_cppflags -D_ISOC99_SOURCE
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add_cppflags -D_ISOC99_SOURCE
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add_cxxflags -D__STDC_CONSTANT_MACROS
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add_cxxflags -D__STDC_CONSTANT_MACROS
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add_cxxflags -std=c++98
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add_cxxflags -std=c++98
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check_cflags -std=c99
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# some compilers silently accept -std=c11, so we also need to check that the
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# version macro is defined properly
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if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
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add_cflags -std=c11
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else
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check_cflags -std=c99
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fi
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check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
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check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
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#include <stdlib.h>
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#include <stdlib.h>
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EOF
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EOF
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@ -5569,6 +5591,11 @@ check_header windows.h
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check_header X11/extensions/XvMClib.h
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check_header X11/extensions/XvMClib.h
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check_header asm/types.h
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check_header asm/types.h
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# it seems there are versions of clang in some distros that try to use the
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# gcc headers, which explodes for stdatomic
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# so we also check that atomics actually work here
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check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
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check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
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check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
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check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
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check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
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check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
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check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
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