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-rw-r--r--configure.in4
1 files changed, 4 insertions, 0 deletions
diff --git a/configure.in b/configure.in
index aa2997d..5d79c2c 100644
--- a/configure.in
+++ b/configure.in
@@ -47,6 +47,10 @@ AC_COMPILE_CHECK(union wait, [#include <sys/types.h>
conflicts with WEXITSTATUS et al, we don't want to use it at all. */
if (WEXITSTATUS (status) != 0) pid = -1;
#endif
+#ifdef HAVE_WAITPID
+/* Make sure union wait works with waitpid. */
+pid = waitpid (-1, &status, 0);
+#endif
],
AC_DEFINE(HAVE_UNION_WAIT))