Add check for shm_open() since these functions quite often are located in librt

diff --git a/configure.ac b/configure.ac
index 5b612ca06671235260663a0f4ad67f706b532b3e..2c934c1238ff4f4fade6c66777f15bd16334306f 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -97,6 +97,7 @@ AS_IF([test "x$enable_shmapi" != xno],
        [
        AM_CONDITIONAL(USE_SHAREDMEMORY_API, true)
        AC_DEFINE([USE_SHAREDMEMORY_API],[],[Use sharedmemory API])
+    AC_CHECK_FUNC([shm_open], [], [AC_CHECK_LIB([rt], [shm_open], [], [AC_MSG_ERROR([could not find shm_open() in librt])])])
        ], [
        AM_CONDITIONAL(USE_SHAREDMEMORY_API, false)
 ])