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author | Tilghman Lesher <tilghman@meg.abyt.es> | 2010-04-06 19:28:42 +0000 |
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committer | Tilghman Lesher <tilghman@meg.abyt.es> | 2010-04-06 19:28:42 +0000 |
commit | bcbafc800eb68b6a2aa0e0582a04e6f205df9ce9 (patch) | |
tree | fb1fa543ea6b001a0e274ce81c156b1cac66996d /configure.ac | |
parent | d3f44c979c08ce7e2a28e0016f427f326b9b764f (diff) |
Mac OS X does not support comparing a mutex to its initializer. Create a test for this.
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@256370 65c4cc65-6c06-0410-ace0-fbb531ad65f3
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) |