diff options
Diffstat (limited to 'libstdc++-v3/acinclude.m4')
| -rw-r--r-- | libstdc++-v3/acinclude.m4 | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4 index d1ecb1a..080a4fc 100644 --- a/libstdc++-v3/acinclude.m4 +++ b/libstdc++-v3/acinclude.m4 @@ -4293,43 +4293,6 @@ AC_DEFUN([GLIBCXX_CHECK_GTHREADS], [ fi fi - AC_CHECK_HEADER(semaphore.h, [ - AC_MSG_CHECKING([for POSIX Semaphores and sem_timedwait]) - AC_TRY_COMPILE([ - #include <unistd.h> - #include <semaphore.h> - #include <limits.h> - ], - [ - #if !defined _POSIX_TIMEOUTS || _POSIX_TIMEOUTS <= 0 - # error "POSIX Timeouts option not supported" - #elif !defined _POSIX_SEMAPHORES || _POSIX_SEMAPHORES <= 0 - # error "POSIX Semaphores option not supported" - #else - #if defined SEM_VALUE_MAX - constexpr int sem_value_max = SEM_VALUE_MAX; - #elif defined _POSIX_SEM_VALUE_MAX - constexpr int sem_value_max = _POSIX_SEM_VALUE_MAX; - #else - # error "SEM_VALUE_MAX not available" - #endif - sem_t sem; - sem_init(&sem, 0, sem_value_max); - struct timespec ts = { 0 }; - sem_timedwait(&sem, &ts); - #endif - ], - [ac_have_posix_semaphore=yes], - [ac_have_posix_semaphore=no])], - [ac_have_posix_semaphore=no]) - - if test $ac_have_posix_semaphore = yes ; then - AC_DEFINE(HAVE_POSIX_SEMAPHORE, - 1, - [Define to 1 if POSIX Semaphores with sem_timedwait are available in <semaphore.h>.]) - fi - AC_MSG_RESULT([$ac_have_posix_semaphore]) - CXXFLAGS="$ac_save_CXXFLAGS" AC_LANG_RESTORE ]) |