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-rw-r--r--Build/source/libs/lua53/configure.ac1
1 files changed, 1 insertions, 0 deletions
diff --git a/Build/source/libs/lua53/configure.ac b/Build/source/libs/lua53/configure.ac
index b5f9f0532de..23c9dcc8606 100644
--- a/Build/source/libs/lua53/configure.ac
+++ b/Build/source/libs/lua53/configure.ac
@@ -16,6 +16,7 @@ AC_CONFIG_MACRO_DIR([../../m4])
KPSE_BASIC([lua53])
AC_PROG_CC
+AC_PROG_CC_C99
AC_PROG_RANLIB
AC_PROG_LN_S