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-rw-r--r--configure.ac2
1 files changed, 2 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index c622e95..87d3d43 100644
--- a/configure.ac
+++ b/configure.ac
@@ -32,6 +32,8 @@ AM_CONDITIONAL([IN_GIT],
AC_PROG_CC()
AM_PROG_CC_C_O()
+AX_CHECK_COMPILE_FLAG([-std=c99], [CFLAGS="${CFLAGS} -std=c99"], [], [])
+
# Consider also:
# * -Wchkp
# * -Wformat=2