From: James Hilliard Date: Tue, 7 Apr 2020 19:26:22 +0000 (-0600) Subject: package/gcc: pass -Wno-error to debug builds X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=dcaf6e75a;p=buildroot.git package/gcc: pass -Wno-error to debug builds gcc fails to build in debug build with debug optimisations: BR2_x86_corei7=y BR2_ENABLE_DEBUG=y BR2_DEBUG_3=y BR2_OPTIMIZE_G=y BR2_TOOLCHAIN_BUILDROOT_GLIBC=y BR2_TOOLCHAIN_BUILDROOT_CXX=y which fails with: ../../../../libsanitizer/libbacktrace/../../libbacktrace/elf.c:772:21: error: ‘st.st_mode’ may be used uninitialized in this function [-Werror=maybe-uninitialized] return S_ISLNK (st.st_mode); ^ Upstream has been unable to reproduce/fix properly, details: https://gcc.gnu.org/legacy-ml/gcc-patches/2019-03/threads.html#00827 Upstream recommends passing -Wno-error as a workaround, see: https://gcc.gnu.org/pipermail/gcc-patches/2019-April/519867.html Reviewed-by: Romain Naour Signed-off-by: James Hilliard [yann.morin.1998@free.fr: add the reproducing defconfig] Signed-off-by: Yann E. MORIN --- diff --git a/package/gcc/gcc.mk b/package/gcc/gcc.mk index 524ca83db0..fe7167b2f3 100644 --- a/package/gcc/gcc.mk +++ b/package/gcc/gcc.mk @@ -100,6 +100,11 @@ HOST_GCC_COMMON_CONF_ENV = \ GCC_COMMON_TARGET_CFLAGS = $(TARGET_CFLAGS) GCC_COMMON_TARGET_CXXFLAGS = $(TARGET_CXXFLAGS) +# used to fix ../../../../libsanitizer/libbacktrace/../../libbacktrace/elf.c:772:21: error: ‘st.st_mode’ may be used uninitialized in this function [-Werror=maybe-uninitialized] +ifeq ($(BR2_ENABLE_DEBUG),y) +GCC_COMMON_TARGET_CFLAGS += -Wno-error +endif + # Propagate options used for target software building to GCC target libs HOST_GCC_COMMON_CONF_ENV += CFLAGS_FOR_TARGET="$(GCC_COMMON_TARGET_CFLAGS)" HOST_GCC_COMMON_CONF_ENV += CXXFLAGS_FOR_TARGET="$(GCC_COMMON_TARGET_CXXFLAGS)"