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-rw-r--r--configure.ac5
1 files changed, 5 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index ed3c3b07c..7b11ab1fa 100644
--- a/configure.ac
+++ b/configure.ac
@@ -469,6 +469,11 @@ printf(__progname);
])
+AC_CHECK_TYPES([union semun], [], [], [[
+#include <sys/sem.h>
+]])
+
+
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <wchar.h>
#include <wctype.h>