diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index ba8581b19..765f0805b 100644 --- a/configure.ac +++ b/configure.ac @@ -808,11 +808,12 @@ AC_DEFINE([HAVE_PTHREAD_MUTEX_RECURSIVE_NP], 1, [Define to 1 if your system defi AC_MSG_RESULT(no) ) -AC_MSG_CHECKING(for pthread_rwlock_timedwrlock() in pthread.h) save_LIBS="$LIBS" save_CFLAGS="$CFLAGS" LIBS="$PTHREAD_LIBS $LIBS" CFLAGS="$CFLAGS $PTHREAD_CFLAGS" + +AC_MSG_CHECKING(for pthread_rwlock_timedwrlock() in pthread.h) AC_LINK_IFELSE( [AC_LANG_PROGRAM( [#include <pthread.h> @@ -826,6 +827,17 @@ AC_LINK_IFELSE( ac_cv_pthread_rwlock_timedwrlock="no" ] ) + +# Some platforms define sem_init(), but only support sem_open(). joyous. +AC_MSG_CHECKING(for working unnamed semaphores) +AC_RUN_IFELSE( + [AC_LANG_PROGRAM([#include <semaphore.h>], + [sem_t sem; return sem_init(&sem, 0, 0);])], + AC_MSG_RESULT(yes) + AC_DEFINE([HAS_WORKING_SEMAPHORE], 1, [Define to 1 if anonymous semaphores work.]), + AC_MSG_RESULT(no) +) + LIBS="$save_LIBS" CFLAGS="$save_CFLAGS" if test "${ac_cv_pthread_rwlock_timedwrlock}" = "yes"; then |