The -Wformat=2 compiler warning can detect potentials errors when using
printf-like functions.  It is supported by GCC and clang.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
---
 accflags.m4 | 1 +
 1 file changed, 1 insertion(+)

diff --git a/accflags.m4 b/accflags.m4
index e4df62c13cf3..57cc48beecc2 100644
--- a/accflags.m4
+++ b/accflags.m4
@@ -14,6 +14,7 @@ AC_DEFUN([NEARD_COMPILER_FLAGS], [
 		CFLAGS="$CFLAGS -Wmissing-declarations"
 		CFLAGS="$CFLAGS -Wredundant-decls"
 		CFLAGS="$CFLAGS -Wcast-align"
+		CFLAGS="$CFLAGS -Wformat=2"
 		CFLAGS="$CFLAGS -DG_DISABLE_DEPRECATED"
 
 		AX_CHECK_COMPILE_FLAG([-Wdouble-promotion], [CFLAGS="$CFLAGS -Wdouble-promotion"])
-- 
2.27.0