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gperftools/configure.ac
Aliaksey Kandratsenka 46d3315ad7 amputate maybe_threads 
This facility allowed us to build tcmalloc without linking in actual
-lpthread. Via weak symbols we checked at runtime if pthread functions
are available and if not, special single-threaded stubs were used
instead. Not always brining in pthread dependency helped performance
of some programs or libraries which depended at runtime on whether
threads are linked or not. Most notable of those are libstdc++ which
uses non-atomic refcounting on single threaded programs.

But such optional dependency on pthreads caused complications for
nearly no benefit. One trouble was reported in github issue #1110.

This days glibc/libstdc++ combo actually depends on
sys/single_threaded.h facility. So bringing pthread at runtime is
fine. Also modern glibc ships pthread symbols inside libc anyways and
libpthread is empty. I also found that for whatever reason on BSDs and
osx we already pulled in proper pthreads too.

So we loose nothing and we get issue #1110 fixed. And we simplify
everything.
2023-07-14 03:07:16 -04:00

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## Process this file with autoconf to produce configure.
## In general, the safest way to proceed is to run ./autogen.sh
# make sure we're interpreted by some minimal autoconf
AC_PREREQ([2.69])
AC_INIT([gperftools],[2.10],[gperftools@googlegroups.com])
# Update this value for every release! (A:B:C will map to foo.so.(A-C).C.B)
# http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
TCMALLOC_SO_VERSION=9:10:5
PROFILER_SO_VERSION=5:5:5
TCMALLOC_AND_PROFILER_SO_VERSION=10:5:6
AC_SUBST(TCMALLOC_SO_VERSION)
AC_SUBST(PROFILER_SO_VERSION)
AC_SUBST(TCMALLOC_AND_PROFILER_SO_VERSION)
# The argument here is just something that should be in the current directory
# (for sanity checking)
AC_CONFIG_SRCDIR(README)
AC_CONFIG_MACRO_DIR([m4])
AC_CANONICAL_HOST
AM_INIT_AUTOMAKE([dist-zip foreign])
AC_CONFIG_HEADERS([src/config.h])
AM_MAINTAINER_MODE()
# Export the version information (for tc_version and friends)
TC_VERSION_MAJOR=`expr "$PACKAGE_VERSION" : '\([[0-9]]*\)'`
TC_VERSION_MINOR=`expr "$PACKAGE_VERSION" : '[[0-9]]*\.\([[0-9]]*\)'`
TC_VERSION_PATCH=`expr "$PACKAGE_VERSION" : '[[0-9]]*\.[[0-9]]*\(.*\)$'`
AC_SUBST(TC_VERSION_MAJOR)
AC_SUBST(TC_VERSION_MINOR)
AC_SUBST(TC_VERSION_PATCH)
AC_SUBST(PACKAGE_STRING)
# The user can choose not to compile in the heap-profiler, the
# heap-checker, or the cpu-profiler. There's also the possibility
# for a 'fully minimal' compile, which leaves out the stacktrace
# code as well. By default, we include all of these that the
# target system supports.
default_enable_cpu_profiler=yes
default_enable_heap_profiler=yes
# heap checker is Linux-only.
default_enable_heap_checker=no
heap_checker_supported=no
default_enable_debugalloc=yes
default_enable_minimal=no
default_tcmalloc_alignment=16
heap_checker_is_default=no
need_nanosleep=yes # Used later, to decide if to run ACX_NANOSLEEP
case "$host" in
*-mingw*) default_enable_minimal=yes; default_enable_debugalloc=no;
need_nanosleep=no;;
*-cygwin*) default_enable_cpu_profiler=no;;
*-linux*) default_enable_heap_checker=yes; heap_checker_supported=yes;;
esac
# Currently only backtrace works on s390 and OSX.
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [
#if !defined(__s390__) && !defined(__APPLE__)
#error not s390 and not osx
#endif
return 1
])],
[default_enable_libunwind=no
default_enable_backtrace=yes],
[default_enable_libunwind=yes
default_enable_backtrace=no])
# Disable libunwind linking on ppc64 by default.
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [return __PPC64__])],
[default_enable_libunwind=no
default_tcmalloc_pagesize=64],
[default_enable_libunwind=yes
default_tcmalloc_pagesize=8])
AC_ARG_ENABLE([cpu-profiler],
[AS_HELP_STRING([--disable-cpu-profiler],
[do not build the cpu profiler])],
[],
[enable_cpu_profiler="$default_enable_cpu_profiler"])
AC_ARG_ENABLE([heap-profiler],
[AS_HELP_STRING([--disable-heap-profiler],
[do not build the heap profiler])],
[],
[enable_heap_profiler="$default_enable_heap_profiler"])
AC_ARG_ENABLE([heap-checker],
[AS_HELP_STRING([--disable-heap-checker],
[do not build the heap checker])],
[],
[enable_heap_checker="$default_enable_heap_checker"; heap_checker_is_default=yes])
AC_ARG_ENABLE([debugalloc],
[AS_HELP_STRING([--disable-debugalloc],
[do not build versions of libs with debugalloc])],
[],
[enable_debugalloc="$default_enable_debugalloc"])
AC_ARG_ENABLE([minimal],
[AS_HELP_STRING([--enable-minimal],
[build only tcmalloc-minimal (and maybe tcmalloc-minimal-debug)])],
[],
[enable_minimal="$default_enable_minimal"])
if test "$enable_minimal" = yes; then
enable_cpu_profiler=no
enable_heap_profiler=no
enable_heap_checker=no
fi
AC_ARG_ENABLE([stacktrace-via-backtrace],
[AS_HELP_STRING([--enable-stacktrace-via-backtrace],
[enable use of backtrace() for stacktrace capturing (may deadlock)])],
[enable_backtrace=yes],
[enable_backtrace="$default_enable_backtrace"])
AC_ARG_ENABLE([libunwind],
[AS_HELP_STRING([--enable-libunwind],
[enable libunwind linking])],
[],
[enable_libunwind="$default_enable_libunwind"])
AC_ARG_WITH([tcmalloc-pagesize],
[AS_HELP_STRING([--with-tcmalloc-pagesize],
[Set the tcmalloc internal page size to 4K, 8K, 16K, 32K, 64K, 128K or 256K])],
[],
[with_tcmalloc_pagesize=$default_tcmalloc_pagesize])
AC_ARG_WITH([tcmalloc-alignment],
[AS_HELP_STRING([--with-tcmalloc-alignment],
[Set the tcmalloc allocation alignment to 8 or 16 bytes])],
[],
[with_tcmalloc_alignment=$default_tcmalloc_alignment])
case "$with_tcmalloc_pagesize" in
4)
AC_DEFINE(TCMALLOC_PAGE_SIZE_SHIFT, 12);;
8)
#Default tcmalloc page size.
;;
16)
AC_DEFINE(TCMALLOC_PAGE_SIZE_SHIFT, 14);;
32)
AC_DEFINE(TCMALLOC_PAGE_SIZE_SHIFT, 15);;
64)
AC_DEFINE(TCMALLOC_PAGE_SIZE_SHIFT, 16);;
128)
AC_DEFINE(TCMALLOC_PAGE_SIZE_SHIFT, 17);;
256)
AC_DEFINE(TCMALLOC_PAGE_SIZE_SHIFT, 18,
[Define internal page size for tcmalloc as number of left bitshift]);;
*)
AC_MSG_WARN([${with_tcmalloc_pagesize}K size not supported, using default tcmalloc page size.])
esac
case "$with_tcmalloc_alignment" in
8)
AC_DEFINE(TCMALLOC_ALIGN_8BYTES, 1,
[Define 8 bytes of allocation alignment for tcmalloc]);;
16)
#Default tcmalloc allocation alignment.
;;
*)
AC_MSG_WARN([${with_tcmalloc_alignment} bytes not supported, using default tcmalloc allocation alignment.])
esac
AS_IF([test "x$enable_heap_checker" = xyes],
[AS_IF([test "x$heap_checker_supported" = xno],
[AC_MSG_NOTICE([your system isn't Linux, and I won't build heap checker despite your request])]
enable_heap_checker=no)])
dnl Heap checker is (and has always been) Linux-only, and also now
dnl depends on clone support in libc. Most Linux libc's do ship clone()
dnl (includes glibc, musl and even bionic), but not all. So we check.
AS_IF([test "x$enable_heap_checker" = xyes],
[AC_MSG_CHECKING([clone() support])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <sched.h>
static int fn(void *dummy) { return 0; }
]],[[
char stk[16];
return clone(fn, stk, CLONE_VM|CLONE_FS|CLONE_FILES, 0);
]])], [AC_MSG_RESULT([yes])], [ dnl clone not found
AC_MSG_RESULT([no])
enable_heap_checker=no
AS_IF([test "x$heap_checker_is_default" = xyes],
[AC_MSG_NOTICE([your Linux system won't have heap checker built due to missing clone() support])],
[AC_MSG_WARN([you requested heap checker built, but your libc doesn't have clone() support])])
])])
# Checks for programs.
AC_PROG_CXX
AC_LANG([C++])
AM_CONDITIONAL(GCC, test "$GCC" = yes) # let the Makefile know if we're gcc
AX_CXX_COMPILE_STDCXX(11, ext, mandatory)
# Check if we have an objcopy installed that supports -W
AC_CHECK_TOOL([OBJCOPY], [objcopy], [])
AS_IF([test -n "$OBJCOPY"], [dnl
AC_CACHE_CHECK([if $OBJCOPY supports -W], gpt_cv_objcopy_weaken, [dnl
AC_LINK_IFELSE([AC_LANG_PROGRAM([void foo() {}])], [dnl
AS_IF(["$OBJCOPY" -W foo conftest$ac_exeext /dev/null],
[gpt_cv_objcopy_weaken=yes], [gpt_cv_objcopy_weaken=no])],
[gpt_cv_objcopy_weaken=no])])],
[gpt_cv_objcopy_weaken=no])
AM_CONDITIONAL(HAVE_OBJCOPY_WEAKEN, test $gpt_cv_objcopy_weaken = yes)
LT_INIT
# Lets try enable frame pointers to enable simpler stacktrace
# capturing methods, but keep performace for critical bits with
# -momit-leaf-frame-pointer. However, we should be conservative so
# that we don't disable leaf frame pointers on whatever architectures
# that have them enabled by default.
AC_CACHE_CHECK(
[compiler and target supports -fno-omit-frame-pointer -momit-leaf-frame-pointer],
[ac_cv_frame_pointer_cflags],
[OLD_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS -fno-omit-frame-pointer -momit-leaf-frame-pointer"
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
#if !(__i386__ || __x86_64__ || __riscv || __aarch64__)
#error unsupported arch
#endif
)],
[ac_cv_frame_pointer_cflags=yes],
[ac_cv_frame_pointer_cflags=no])
CXXFLAGS="$OLD_CXXFLAGS"])
AM_CONDITIONAL(ENABLE_FP_FLAGS, [test "x$ac_cv_frame_pointer_cflags" = "xyes"])
AX_C___ATTRIBUTE__
AC_MSG_CHECKING(for __attribute__((aligned(N))) on functions)
AC_CACHE_VAL(ac_cv___attribute__aligned_fn, [
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
void foo(void) __attribute__((aligned(128)));
void foo(void) { exit(1); }]], [[]])],[ac_cv___attribute__aligned_fn=yes],[ac_cv___attribute__aligned_fn=no
])])
if test "$ac_cv___attribute__aligned_fn" = "yes"; then
AC_DEFINE(HAVE___ATTRIBUTE__ALIGNED_FN, 1, [define if your compiler supports alignment of functions])
fi
AC_MSG_RESULT($ac_cv___attribute__aligned_fn)
# TODO(csilvers): we could remove a lot when WITH_CPU_PROFILER etc is "no".
AC_CHECK_TYPES([struct mallinfo],,, [#include <malloc.h>])
AC_CHECK_TYPES([Elf32_Versym],,, [#include <elf.h>]) # for vdso_support.h
AC_CHECK_FUNCS(sbrk) # for tcmalloc to get memory
AC_CHECK_FUNCS(__sbrk) # for tcmalloc to get memory
AC_CHECK_FUNCS(geteuid) # for turning off services when run as root
AC_CHECK_FUNCS(fork) # for the pthread_atfork setup
AC_CHECK_HEADERS(features.h) # for vdso_support.h, __GLIBC__ macros
AC_CHECK_HEADERS(malloc.h) # some systems define stuff there, others not
AC_CHECK_HEADERS(glob.h) # for heap-profile-table (cleaning up profiles)
AC_CHECK_HEADERS(execinfo.h) # for stacktrace? and heapchecker_unittest
AC_CHECK_HEADERS(unwind.h) # for stacktrace
AC_CHECK_HEADERS(sched.h) # for being nice in our spinlock code
AC_CHECK_HEADERS(sys/syscall.h)
AC_CHECK_HEADERS(sys/socket.h) # optional; for forking out to symbolizer
AC_CHECK_HEADERS(sys/wait.h) # optional; for forking out to symbolizer
AC_CHECK_HEADERS(poll.h) # optional; for forking out to symbolizer
AC_CHECK_HEADERS(fcntl.h) # for tcmalloc_unittest
AC_CHECK_HEADERS(grp.h) # for heapchecker_unittest
AC_CHECK_HEADERS(pwd.h) # for heapchecker_unittest
AC_CHECK_HEADERS(sys/resource.h) # for memalign_unittest.cc
AC_CHECK_HEADERS(sys/cdefs.h) # Where glibc defines __THROW
# We also need <ucontext.h>/<sys/ucontext.h>, but we get those from
# AC_PC_FROM_UCONTEXT, below.
# We override a lot of memory allocation routines, not all of which are
# standard. For those the system doesn't declare, we'll declare ourselves.
AC_CHECK_DECLS([cfree,
posix_memalign,
memalign,
valloc,
pvalloc],,,
[#define _XOPEN_SOURCE 600
#include <stdlib.h>
#include <malloc.h>])
if test "$ac_cv_type_struct_mallinfo" = yes; then
AC_SUBST(ac_cv_have_struct_mallinfo, 1) # gperftools/tcmalloc.h needs this
else
AC_SUBST(ac_cv_have_struct_mallinfo, 0)
fi
# We hardcode HAVE_MMAP to 1. There are no interesting systems anymore
# without functional mmap. And our windows (except mingw) builds
# aren't using autoconf. So we keep HAVE_MMAP define, but only to
# distingush windows and rest.
case "$host" in
*-mingw*) default_emergency_malloc=no;;
*) default_emergency_malloc=yes
AC_DEFINE(HAVE_MMAP, 1, [Define to 1 if you have a working `mmap' system call.])
esac
# We want to access the "PC" (Program Counter) register from a struct
# ucontext. Every system has its own way of doing that. We try all the
# possibilities we know about. Note REG_PC should come first (REG_RIP
# is also defined on solaris, but does the wrong thing). But don't
# bother if we're not doing cpu-profiling.
# [*] means that we've not actually tested one of these systems
if test "$enable_cpu_profiler" = yes; then
AC_PC_FROM_UCONTEXT(AC_MSG_WARN(Could not find the PC. Will not try to compile libprofiler...);
enable_cpu_profiler=no)
fi
# Some tests test the behavior of .so files, and only make sense for dynamic.
AM_CONDITIONAL(ENABLE_STATIC, test "$enable_static" = yes)
# We want to link in libunwind if it is enabled and exists.
UNWIND_LIBS=
if test "$enable_libunwind" = yes; then
AC_CHECK_HEADERS([libunwind.h],
[AC_CHECK_LIB(unwind, backtrace,
[UNWIND_LIBS=-lunwind
AC_DEFINE([USE_LIBUNWIND], [1], [libunwind.h was found and is working])
will_use_libunwind=yes])])
fi
AC_SUBST(UNWIND_LIBS)
AC_ARG_ENABLE(frame_pointers,
AS_HELP_STRING([--enable-frame-pointers],
[Add -fno-omit-frame-pointer to compile flags]),
, enable_frame_pointers=no)
AM_CONDITIONAL(ENABLE_FRAME_POINTERS, test "$enable_frame_pointers" = yes)
# See if the compiler supports -Wno-unused-result.
# Newer ubuntu's turn on -D_FORTIFY_SOURCE=2, enabling
# __attribute__((warn_unused_result)) for things like write(),
# which we don't care about.
AC_CACHE_CHECK([if the compiler supports -Wno-unused-result],
perftools_cv_w_no_unused_result,
[OLD_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS -Wno-error -Wunused-result"
# gcc doesn't warn about unknown flags unless it's
# also warning for some other purpose, hence the
# divide-by-0. (We use -Wno-error to make sure the
# divide-by-0 doesn't cause this test to fail!)
#
# Also gcc is giving only warning for unknown flags of
# -Wno-XXX form. So in order to detect support we're
# using -Wunused-result which will cause gcc to give
# error which we can detect.
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, return 1/0)],
perftools_cv_w_no_unused_result=yes,
perftools_cv_w_no_unused_result=no)
CXXFLAGS="$OLD_CXXFLAGS"])
AM_CONDITIONAL(HAVE_W_NO_UNUSED_RESULT,
test "$perftools_cv_w_no_unused_result" = yes)
AC_ARG_ENABLE([deprecated-pprof],
[AS_HELP_STRING([--disable-deprecated-pprof],
[do not install old deprecated and unmaintained bundled pprof
(see github.com/google/pprof for supported version)])],
[enable_pprof="$enableval"],
[enable_pprof=yes])
AM_CONDITIONAL(INSTALL_PPROF,
[test "x$enable_pprof" = xyes])
AC_ARG_ENABLE([dynamic-sized-delete-support],
[AS_HELP_STRING([--enable-dynamic-sized-delete-support],
[try to build run-time switch for sized delete operator])],
[enable_dyn_sized_delete="$enableval"],
[enable_dyn_sized_delete=no])
AS_IF([test "x$enable_dyn_sized_delete" = xyes],
[AC_DEFINE([ENABLE_DYNAMIC_SIZED_DELETE], 1,
[Build runtime detection for sized delete])])
AC_ARG_ENABLE([sized-delete],
[AS_HELP_STRING([--enable-sized-delete],
[build sized delete operator])],
[enable_sized_delete="$enableval"],
[enable_sized_delete="no"])
AS_IF([test "x$enable_sized_delete" = xyes],
[AC_DEFINE([ENABLE_SIZED_DELETE], 1, [Build sized deletion operators])
AC_MSG_NOTICE([Will build sized deallocation operators])],
[AS_IF([test "x$enable_dyn_sized_delete" = xyes],
[AC_MSG_NOTICE([Will build dynamically detected sized deallocation operators])],
[AC_MSG_NOTICE([Will build sized deallocation operators that ignore size])])])
AC_CACHE_CHECK([if C++ compiler supports -fsized-deallocation],
[perftools_cv_sized_deallocation_result],
[OLD_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS -fsized-deallocation"
AC_LINK_IFELSE([AC_LANG_PROGRAM(
[[#include <new>
#include <stddef.h>]],
[[static void (* volatile ptr)(void *, size_t) = ::operator delete; (*ptr)(0, 256);]])],
perftools_cv_sized_deallocation_result=yes,
perftools_cv_sized_deallocation_result=no)
CXXFLAGS="$OLD_CXXFLAGS"])
AM_CONDITIONAL(HAVE_SIZED_DEALLOCATION,
test "$perftools_cv_sized_deallocation_result" = yes)
AC_CACHE_CHECK([if C++ compiler supports std::align_val_t without options],
[perftools_cv_have_align_val_t],
[AC_LINK_IFELSE([AC_LANG_PROGRAM(
[[#include <new>]],
[[(::operator delete)((::operator new)(256, std::align_val_t(16)), std::align_val_t(16))]])],
perftools_cv_have_align_val_t=yes,
perftools_cv_have_align_val_t=no)])
AC_CACHE_CHECK([if C++ compiler supports -faligned-new],
[perftools_cv_have_f_aligned_new],
[OLD_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS -faligned-new"
AC_LINK_IFELSE([AC_LANG_PROGRAM(
[[#include <new>]],
[[(::operator delete)((::operator new)(256, std::align_val_t(16)), std::align_val_t(16))]])],
perftools_cv_have_f_aligned_new=yes,
perftools_cv_have_f_aligned_new=no)
CXXFLAGS="$OLD_CXXFLAGS"])
AM_CONDITIONAL(HAVE_F_ALIGNED_NEW,
test "$perftools_cv_have_f_aligned_new" = yes)
AS_IF([test "$perftools_cv_have_align_val_t" = yes || test "$perftools_cv_have_f_aligned_new" = yes],
[AC_DEFINE([ENABLE_ALIGNED_NEW_DELETE], 1, [Build new/delete operators for overaligned types])
AC_MSG_NOTICE([Will build new/delete operators for overaligned types])],
AC_MSG_NOTICE([Will not build new/delete operators for overaligned types]))
if test "$perftools_cv_have_align_val_t" = yes || test "$perftools_cv_have_f_aligned_new" = yes; then
AC_SUBST(ac_cv_have_std_align_val_t, 1) # gperftools/tcmalloc.h and windows/gperftools/tcmalloc.h need this
else
AC_SUBST(ac_cv_have_std_align_val_t, 0)
fi
AC_CACHE_CHECK([if target has _Unwind_Backtrace],
[perftools_cv_have_unwind_backtrace],
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
[[#include <unwind.h>
#if defined(__APPLE__) || defined(__FreeBSD__)
#error OSX and FreeBSD _Unwind_Backtrace recurses back to malloc
#endif
]],
[[&_Unwind_Backtrace]])],
[perftools_cv_have_unwind_backtrace=yes],
[perftools_cv_have_unwind_backtrace=no])])
AS_IF([test "x$perftools_cv_have_unwind_backtrace" = xyes],
[AC_DEFINE(HAVE_UNWIND_BACKTRACE, 1, [Whether <unwind.h> contains _Unwind_Backtrace])])
AS_IF([test "x$will_use_libunwind" = xyes],
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM(, [return __arm__])],
[default_emergency_malloc=yes])])
AC_ARG_ENABLE([emergency-malloc],
[AS_HELP_STRING([--enable-emergency-malloc],
[build emergency malloc feature])],
[enable_emergency_malloc="$enableval"],
[enable_emergency_malloc="$default_emergency_malloc"])
AM_CONDITIONAL(BUILD_EMERGENCY_MALLOC, [test "x$enable_emergency_malloc" = xyes])
# Also make sure we get standard PRI... definitions, even with glibc.
# We have to use AH_VERBATIM because we need the #ifdef guard (gcc buglet)
AH_VERBATIM([__STDC_FORMAT_MACROS],
[/* C99 says: define this to get the PRI... macros from stdint.h */
#ifndef __STDC_FORMAT_MACROS
# define __STDC_FORMAT_MACROS 1
#endif])
# Check if __environ is available (for GetenvBeforeMain)
AC_MSG_CHECKING([for __environ])
AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>],
[char **env = __environ])],
[AC_DEFINE(HAVE___ENVIRON, 1,
[Define to 1 if compiler supports __environ])
AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no])])
# If we support __thread, that can speed up tcmalloc a bit.
# Note, however, that our code tickles a bug in gcc < 4.1.2
# involving TLS and -fPIC (which our libraries will use) on x86:
# http://gcc.gnu.org/ml/gcc-bugs/2006-09/msg02275.html
#
# And mingw also does compile __thread but resultant code actually
# fails to work correctly at least in some not so ancient version:
# http://mingw-users.1079350.n2.nabble.com/gcc-4-4-multi-threaded-exception-handling-amp-thread-specifier-not-working-td3440749.html
#
# Also it was reported that earlier gcc versions for mips compile
# __thread but it doesn't really work
AC_MSG_CHECKING([for __thread])
AC_LINK_IFELSE([AC_LANG_PROGRAM([#if defined(__GNUC__) && ((__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 1) || (__GNUC__ == 4 && __GNUC_MINOR__ == 1 && __GNUC_PATCHLEVEL__ < 2))
#error gcc has this bug: http://gcc.gnu.org/ml/gcc-bugs/2006-09/msg02275.html
#elif defined(__MINGW32__)
#error mingw doesnt really support tls
#elif defined(__APPLE__)
#error OSX __thread support is known to call malloc which makes it unsafe to use from malloc replacement
#elif defined(_AIX)
#error AIX thread support is known to call malloc which makes it unsafe to use from malloc replacement
#endif
], [static __thread int p = 0])],
[AC_DEFINE(HAVE_TLS, 1,
Define to 1 if compiler supports __thread)
AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no])])
# Nanosleep requires extra libraries on some architectures (solaris).
# This sets NANOSLEEP_LIBS. nanosleep doesn't exist on mingw, which
# is fine for us because we don't compile libspinlock, which uses it.
if test "$need_nanosleep" = yes; then
ACX_NANOSLEEP
AC_SUBST(NANOSLEEP_LIBS)
fi
# Solaris 10 6/06 has a bug where /usr/sfw/lib/libstdc++.la is empty.
# If so, we replace it with our own version.
LIBSTDCXX_LA_LINKER_FLAG=
if test -f /usr/sfw/lib/libstdc++.la && ! test -s /usr/sfw/lib/libstdc++.la
then
LIBSTDCXX_LA_LINKER_FLAG='-L$(top_srcdir)/src/solaris'
fi
AC_SUBST(LIBSTDCXX_LA_LINKER_FLAG)
# In fact, a lot of the code in this directory depends on pthreads
AX_PTHREAD
# Figure out where libc has program_invocation_name
AC_PROGRAM_INVOCATION_NAME
# Make the install prefix available, to figure out where to look for pprof
AC_INSTALL_PREFIX
dnl only very recent mingw has sleep and nanosleep
case "$host" in
*-mingw*)
AC_CHECK_DECLS([sleep], [], [], [#include <unistd.h>])
AC_CHECK_DECLS([nanosleep], [], [], [#include <time.h>])
;;
esac
if test "x$enable_backtrace" = xyes; then
AC_CHECK_DECLS([backtrace], [], [], [#include <execinfo.h>])
save_LIBS=$LIBS
LIBS=$UNWIND_LIBS
AC_SEARCH_LIBS([backtrace], [execinfo])
UNWIND_LIBS=$LIBS
LIBS=$save_LIBS
fi
STACKTRACE_UNITTEST_LIBS=
AS_IF([test "x$ac_cv_header_execinfo_h" = xyes],
AS_IF([test "x$enable_cpu_profiler" = xyes -o "x$enable_heap_profiler" = xyes -o "x$enable_heap_checker" = xyes],
[AC_CHECK_DECLS([backtrace_symbols], [], [], [#include <execinfo.h>
])
save_LIBS=$LIBS
LIBS=
AC_SEARCH_LIBS([backtrace_symbols], [execinfo])
STACKTRACE_UNITTEST_LIBS=$LIBS
LIBS=$save_LIBS]))
AC_SUBST(STACKTRACE_UNITTEST_LIBS)
# For windows, this has a non-trivial value (__declspec(export)), but any
# system that uses configure wants this to be the empty string.
AC_DEFINE(PERFTOOLS_DLL_DECL,,
[Always the empty-string on non-windows systems.
On windows, should be "__declspec(dllexport)".
This way, when we compile the dll, we export our functions/classes.
It's safe to define this here because config.h is only used
internally, to compile the DLL, and every DLL source file
#includes "config.h" before anything else.])
# In theory, config.h files shouldn't need a header guard, but we do,
# because we (maybe) #include windows/mingw.h from within config.h,
# and it #includes other .h files. These all have header guards, so
# the end result is if config.h is #included twice, its #undefs get
# evaluated twice, but all the ones in mingw.h/etc only get evaluated
# once, potentially causing trouble. c.f.
# http://code.google.com/p/gperftools/issues/detail?id=246
AH_TOP([
#ifndef GPERFTOOLS_CONFIG_H_
#define GPERFTOOLS_CONFIG_H_
])
AH_VERBATIM([PTHREADS_CRASHES_IF_RUN_TOO_EARLY],
[/* Mark the systems where we know it's bad if pthreads runs too
early before main (before threads are initialized, presumably). */
#if defined(__FreeBSD__) || defined(_AIX)
#define PTHREADS_CRASHES_IF_RUN_TOO_EARLY 1
#endif])
# MinGW uses autoconf, but also needs the windows shim routines
# (since it doesn't have its own support for, say, pthreads).
# This requires us to #include a special header file, and also to
# link in some windows versions of .o's instead of the unix versions.
#
# Also, manually mark systems where we have to be careful how early
# we run pthreads. TODO(csilvers): turn this into an autoconf check.
AH_BOTTOM([
#ifdef __MINGW32__
#include "windows/mingw.h"
#endif
#endif /* #ifndef GPERFTOOLS_CONFIG_H_ */
])
AM_CONDITIONAL(MINGW, expr $host : '.*-mingw' >/dev/null 2>&1)
AM_CONDITIONAL(OSX, expr $host : '.*-apple-darwin.*' >/dev/null 2>&1)
# Export the --enable flags we set above. We do this at the end so
# other configure rules can enable or disable targets based on what
# they find.
AM_CONDITIONAL(WITH_CPU_PROFILER, test "$enable_cpu_profiler" = yes)
AM_CONDITIONAL(WITH_HEAP_PROFILER, test "$enable_heap_profiler" = yes)
AM_CONDITIONAL(WITH_HEAP_CHECKER, test "$enable_heap_checker" = yes)
AM_CONDITIONAL(WITH_DEBUGALLOC, test "$enable_debugalloc" = yes)
# We make tcmalloc.so if either heap-profiler or heap-checker is asked for.
AM_CONDITIONAL(WITH_HEAP_PROFILER_OR_CHECKER,
test "$enable_heap_profiler" = yes -o \
"$enable_heap_checker" = yes)
# If we don't use any profilers, we don't need stack traces (or pprof)
AM_CONDITIONAL(WITH_STACK_TRACE, test "$enable_cpu_profiler" = yes -o \
"$enable_heap_profiler" = yes -o \
"$enable_heap_checker" = yes)
have_linux_sigev_thread_id=no
AC_MSG_CHECKING([for Linux SIGEV_THREAD_ID])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[#include <signal.h>
#include <time.h>]],
[[return SIGEV_THREAD_ID || CLOCK_THREAD_CPUTIME_ID || __linux;]])],
[AC_DEFINE(HAVE_LINUX_SIGEV_THREAD_ID, 1,
[Define if this is Linux that has SIGEV_THREAD_ID])
have_linux_sigev_thread_id=yes
AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no])])
# Disable large allocation report by default.
AC_ARG_ENABLE([large-alloc-report],
[AS_HELP_STRING([--enable-large-alloc-report],
[report very large allocations to stderr])],
[enable_large_alloc_report="$enableval"],
[enable_large_alloc_report=no])
AS_IF([test "x$enable_large_alloc_report" = xyes],
[AC_DEFINE([ENABLE_LARGE_ALLOC_REPORT], 1, [report large allocation])])
# Enable aggressive decommit by default
AC_ARG_ENABLE([aggressive-decommit-by-default],
[AS_HELP_STRING([--enable-aggressive-decommit-by-default],
[enable aggressive decommit by default])],
[enable_aggressive_decommit_by_default="$enableval"],
[enable_aggressive_decommit_by_default=no])
AS_IF([test "x$enable_aggressive_decommit_by_default" = xyes],
[AC_DEFINE([ENABLE_AGGRESSIVE_DECOMMIT_BY_DEFAULT],
1,
[enable aggressive decommit by default])])
# Write generated configuration file
AC_CONFIG_FILES([Makefile
src/gperftools/tcmalloc.h src/windows/gperftools/tcmalloc.h])
AC_OUTPUT
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