[OE-core] [PATCH] gcc-sanitizers: fix the build with -fno-omit-frame-pointer

[Khem Raj]

On Tue, Mar 5, 2019 at 8:24 PM <mingli.yu at windriver.com> wrote:
>
> From: Mingli Yu <Mingli.Yu at windriver.com>
>
> Fix the below build issue for gcc-sanitizers when
> both -mthumb and -fno-omit-frame-pointer configured
> for arm.
> | ../../../../libsanitizer/sanitizer_common/sanitizer_linux.cc: In function 'sanitizer::uptr sanitizer::internal_clone(int (*)(void*), void*, int, void*, int*, void*, int*)':
> | ../../../../libsanitizer/sanitizer_common/sanitizer_linux.cc:1540:1: error: r7 cannot be used in asm here
> }
>
> Reference: https://reviews.llvm.org/D50180
>
> Signed-off-by: Mingli Yu <Mingli.Yu at windriver.com>
> ---
>  meta/recipes-devtools/gcc/gcc-sanitizers_8.2.bb | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/meta/recipes-devtools/gcc/gcc-sanitizers_8.2.bb b/meta/recipes-devtools/gcc/gcc-sanitizers_8.2.bb
> index f3c7058..2f89c86 100644
> --- a/meta/recipes-devtools/gcc/gcc-sanitizers_8.2.bb
> +++ b/meta/recipes-devtools/gcc/gcc-sanitizers_8.2.bb
> @@ -5,3 +5,4 @@ require gcc-sanitizers.inc
>  # sanitizer_linux.s:5749: Error: lo register required -- `ldr ip,[sp],#8'
>  ARM_INSTRUCTION_SET_armv4 = "arm"
>  ARM_INSTRUCTION_SET_armv5 = "arm"
> +TARGET_CFLAGS_remove_arm = "${@bb.utils.contains('TUNE_CCARGS', '-mthumb', '-fno-omit-frame-pointer', '', d)}"

what target does it happen with ? since we set arm ISA for armv5 and
v4 it must be something else