diff --git a/config/arch.aarch64 b/config/arch.aarch64
index f9b1ea70a1..f77ae507ea 100644
--- a/config/arch.aarch64
+++ b/config/arch.aarch64
@@ -23,5 +23,7 @@
 
 # setup ARCH specific *FLAGS
   TARGET_CFLAGS="-march=${TARGET_VARIANT}${TARGET_CPU_FLAGS} -mabi=lp64 -Wno-psabi -mtune=$TARGET_CPU"
+# Disable runtime checking support of ARMv8.0's optional LSE feature. Breaks gdb and mesa compile.
+  TARGET_CFLAGS="${TARGET_CFLAGS} -mno-outline-atomics"
   TARGET_LDFLAGS="-march=${TARGET_VARIANT}${TARGET_CPU_FLAGS} -mtune=$TARGET_CPU"
   GCC_OPTS="--with-abi=lp64 --with-arch=$TARGET_VARIANT"