AC_CHECK_FUNCS([getpagesize])
dnl Check for POSIX timers
-AC_CHECK_FUNCS(clock_gettime, [], [
+CLOCK_GETTIME_FOUND="no"
+AC_CHECK_FUNC(clock_gettime, [CLOCK_GETTIME_FOUND="yes"], [
AC_CHECK_LIB(rt, clock_gettime, [
- AC_DEFINE(HAVE_CLOCK_GETTIME, 1)
+ CLOCK_GETTIME_FOUND="yes"
LIBS="$LIBS -lrt"
], [
AC_CHECK_LIB(pthread, clock_gettime, [
- AC_DEFINE(HAVE_CLOCK_GETTIME, 1)
+ CLOCK_GETTIME_FOUND="yes"
LIBS="$LIBS -lpthread"
])
])
])
+# With XCode 8, clock_gettime will be incorrectly detected as being available
+# regardless of what version of OS X you target because the symbol is available
+# in the .tbd file as a weak symbol.
+# See: https://bugzilla.gnome.org/show_bug.cgi?id=772451
+#
+# We cannot simply do AC_CHECK_FUNCS with -Wl,-no_weak_imports because the
+# autoconf check does its own prototype declaration that doesn't trigger that
+# compiler flag.
+#
+# It's only starting from macOS 10.12, that clock_gettime is actually available,
+# so we can unconditionally disable it when targetting older versions.
+case "$host_os" in
+ darwin*)
+ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+#include <AvailabilityMacros.h>
+#if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_12
+#error "Not compiling for OS X 10.12 or later"
+#endif
+ ]])], [], [
+ if test "$CLOCK_GETTIME_FOUND" = "yes"; then
+ AC_MSG_NOTICE([Disabling incorrectly detected clock_gettime on OS X])
+ fi
+ CLOCK_GETTIME_FOUND="no"
+ ])
+ ;;
+esac
+
+if test "$CLOCK_GETTIME_FOUND" = "yes"; then
+ AC_DEFINE(HAVE_CLOCK_GETTIME, 1, [Have clock_gettime])
+fi
+
AC_CACHE_CHECK(for posix timers, gst_cv_posix_timers,
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <time.h>
AM_CONDITIONAL(HAVE_TIMER_CREATE_SETTIME_DELETE, test "x$ac_cv_lib_rt_timer_create__timer_settime__timer_delete" = "xyes")
dnl Allow for checking HAVE_CLOCK_GETTIME in automake files
-AM_CONDITIONAL(HAVE_CLOCK_GETTIME, test "x$ac_cv_func_clock_gettime" = "xyes")
+AM_CONDITIONAL(HAVE_CLOCK_GETTIME, test "x$HAVE_CLOCK_GETTIME" = "xyes")
dnl Create _stdint.h in the top-level directory
AX_CREATE_STDINT_H
version : '1.9.90',
meson_version : '>= 0.33.0',
default_options : [ 'warning_level=1',
- 'c_std=gnu99',
+ 'c_std=c99',
'buildtype=debugoptimized' ])
gst_version = meson.project_version()
if cc.has_function('getpagesize', prefix : '#include<unistd.h>')
cdata.set('HAVE_GETPAGESIZE', 1)
endif
+
+# With OS X 10.11.6 and XCode 8, clock_gettime will be incorrectly detected as
+# being available because the symbol is available in the .tbd file as a weak
+# symbol. See: https://github.com/Homebrew/homebrew-core/issues/3727#issue-170086273
+#
+# We cannot simply do cc.has_function with -Wl,-no_weak_imports because the
+# check does its own prototype decl that doesn't trigger that compiler flag.
+#
+# It's only starting from macOS 10.12, that clock_gettime is actually available,
+# so we can unconditionally disable it for older versions.
+for_osx_10_12_src = '''#include <AvailabilityMacros.h>
+#if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_12
+#error "Not compiling for OS X 10.12 or later"
+#endif
+'''
+
if cc.has_function('clock_gettime', prefix : '#include <time.h>')
- cdata.set('HAVE_CLOCK_GETTIME', 1)
+ if host_machine.system() == 'darwin'
+ if cc.compiles(for_osx_10_12_src, name : 'minimum OS X version required >= 10.12')
+ cdata.set('HAVE_CLOCK_GETTIME', 1)
+ endif
+ else
+ cdata.set('HAVE_CLOCK_GETTIME', 1)
+ endif
endif
# We only want to use the __declspec(dllexport/import) dance in GST_EXPORT when