From 0a98d66159e474915afd6597d3aa444a698fdd2d Mon Sep 17 00:00:00 2001 From: David Herrmann Date: Tue, 24 Feb 2015 15:59:06 +0100 Subject: [PATCH] build: add -Wno-format-signedness gcc5 introduced this option (gcc4 silently ignores it, which is fine). Given that gcc5 thinks 'unsigned char'/'unsigned short' is promoted to 'int' for var-args, stuff like this spits out warnings: uint8_t x; printf("%" PRIu8", x); gcc5 promots 'x' to 'int', instead of 'unsigned int' and thus gets a signedness-warnings as it expects an 'unsigned int'. glibc states otherwise: unsigneds are always promoted to 'unsigned int'. Until gcc and glibc figure this out, lets just ignore that warning (which is totally useless in its current form). --- configure.ac | 1 + 1 file changed, 1 insertion(+) diff --git a/configure.ac b/configure.ac index 9a2235bcf..22a6f1781 100644 --- a/configure.ac +++ b/configure.ac @@ -186,6 +186,7 @@ CC_CHECK_FLAGS_APPEND([with_cflags], [CFLAGS], [\ -Wno-unused-parameter \ -Wno-missing-field-initializers \ -Wno-unused-result \ + -Wno-format-signedness \ -Werror=overflow \ -Wdate-time \ -Wnested-externs \ -- 2.30.2