Check in configure for std=c11 flag; set it or fail

694b9a20 · Andreas Marek · 9a5c2a5b · 694b9a20
Commit 694b9a20 authored Mar 09, 2018 by Andreas Marek
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configure.ac configure.ac +8 -0

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--- a/configure.ac
+++ b/configure.ac
@@ -109,6 +109,14 @@ if test x"${enable_openmp}" = x"yes"; then
  CFLAGS="$OPENMP_CFLAGS $CFLAGS"
 fi

+
+AX_CHECK_COMPILE_FLAG([-std=c11], [
+  CFLAGS+=" -std=c11"
+], [
+  echo "C compiler cannot compile C11 code"
+  exit -1
+])
+
 AC_PROG_INSTALL
 AM_PROG_AR
 AM_PROG_AS