[Buildroot] [git commit] package/gcc: disable libsanitizer on ARM Thumb classic
Thomas Petazzoni
thomas.petazzoni at bootlin.com
Mon Aug 7 20:13:00 UTC 2023
commit: https://git.buildroot.net/buildroot/commit/?id=fd17b3dd44363b8d47f2394cc5320b271229982c
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/master
libsanitizer is broken for Thumb1, sanitizer_linux.cc contains
unconditional "ldr ip, [sp], #8", which causes:
....s: Assembler messages:
....s:4190: Error: lo register required -- `ldr ip,[sp],#8'
Fixes:
http://autobuild.buildroot.net/results/5e15820c5db8c4c48c1de62a0c77171aeee381ba/
Signed-off-by: Alexander Sverdlin <alexander.sverdlin at gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
---
package/gcc/gcc.mk | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/package/gcc/gcc.mk b/package/gcc/gcc.mk
index 25cb4ce8e2..1ecbf7e9b4 100644
--- a/package/gcc/gcc.mk
+++ b/package/gcc/gcc.mk
@@ -154,6 +154,14 @@ ifeq ($(BR2_mips)$(BR2_mipsel):$(BR2_TOOLCHAIN_GCC_AT_LEAST_12),y:y)
HOST_GCC_COMMON_CONF_OPTS += --disable-libsanitizer
endif
+# libsanitizer is broken for Thumb1, sanitizer_linux.cc contains unconditional
+# "ldr ip, [sp], #8", which causes:
+# ....s: Assembler messages:
+# ....s:4190: Error: lo register required -- `ldr ip,[sp],#8'
+ifeq ($(BR2_ARM_INSTRUCTIONS_THUMB),y)
+HOST_GCC_COMMON_CONF_OPTS += --disable-libsanitizer
+endif
+
# The logic in libbacktrace/configure.ac to detect if __sync builtins
# are available assumes they are as soon as target_subdir is not
# empty, i.e when cross-compiling. However, some platforms do not have
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