configure: Compile everything with -std=gnu17

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

diff --git a/configure.ac b/configure.ac
index 69b83f396e9d18adebda44e65c91ec9c21e54588..ecfcc5a6265055fba406b39a5c90695881f9d313 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -116,7 +116,7 @@ m4_pattern_forbid([^_?PKG_[A-Z_]+$],[*** pkg.m4 missing, please install pkg-conf
 AC_PROG_CC
 
 CC_CHECK_FLAGS_APPEND([with_cflags], [CFLAGS], [\
-       -std=gnu11 \
+       -std=gnu17 \
        -Wall \
        -Wextra \
        -Warray-bounds=2 \