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author | tilghman <tilghman@f38db490-d61c-443f-a65b-d21fe96a405b> | 2010-04-06 19:28:42 +0000 |
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committer | tilghman <tilghman@f38db490-d61c-443f-a65b-d21fe96a405b> | 2010-04-06 19:28:42 +0000 |
commit | bfb86188c05b186db5cb26b7a812ac55304e2924 (patch) | |
tree | fb1fa543ea6b001a0e274ce81c156b1cac66996d /configure.ac | |
parent | 086b3ec45a009b33b4a2dfe72f4782ca84ecf85b (diff) |
Mac OS X does not support comparing a mutex to its initializer. Create a test for this.
git-svn-id: http://svn.digium.com/svn/asterisk/trunk@256370 f38db490-d61c-443f-a65b-d21fe96a405b
Diffstat (limited to 'configure.ac')
-rw-r--r-- | configure.ac | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 057327a09..7a4cbb8eb 100644 --- a/configure.ac +++ b/configure.ac @@ -595,6 +595,20 @@ fi AST_C_DEFINE_CHECK([PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP], [PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP], [pthread.h]) +# Can we compare a mutex to its initial value? +# Generally yes on OpenBSD/FreeBSD and no on Mac OS X. +AC_MSG_CHECKING(whether we can compare a mutex to its initial value) +AC_LINK_IFELSE( + AC_LANG_PROGRAM([#include <pthread.h>], [pthread_mutex_t lock; + if ((lock) != ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) { + return 0; + } + return 0]), + AC_MSG_RESULT(yes) + AC_DEFINE([CAN_COMPARE_MUTEX_TO_INIT_VALUE], 1, [Define to 1 if your system's implementation of mutexes supports comparison of a mutex to its initializer.]), + AC_MSG_RESULT(no) +) + #if test "${cross_compiling}" = "no"; #then #AC_MSG_CHECKING(for working epoll support) |