1 files changed, 24 insertions, 0 deletions
diff --git a/build/apr_threads.m4 b/build/apr_threads.m4
index 9a9e2a013..05602eea6 100644
--- a/build/apr_threads.m4
+++ b/build/apr_threads.m4
@@ -156,3 +156,27 @@ else
 fi
 ])dnl
 
+AC_DEFUN(APACHE_CHECK_SIGWAIT_ONE_ARG,[
+  AC_CACHE_CHECK(whether sigwait takes one argument,ac_cv_sigwait_one_arg,[
+  AC_TRY_COMPILE([
+#ifdef __NETBSD__
+    /* When using the unproven-pthreads package, we need to pull in this
+     * header to get a prototype for sigwait().  Else things will fail later
+     * on.  XXX Should probably be fixed in the unproven-pthreads package.
+     */
+#include <pthread.h>
+#endif
+#include <signal.h>
+],[
+  sigset_t set;
+ 
+  sigwait(&set);
+],[
+  ac_cv_sigwait_one_arg=yes
+],[
+  ac_cv_sigwait_one_arg=no
+])])
+  if test "$ac_cv_sigwait_one_arg" = "yes"; then
+    AC_DEFINE(SIGWAIT_TAKES_ONE_ARG,1,[ ])
+  fi
+])