gcc-runtime: disable automatic libatomic linking during build

GCC 16 introduced -flink-libatomic which automatically injects
-latomic_asneeded into link commands via LINK_LIBATOMIC_SPEC.
During gcc-runtime do_compile, OE uses a pre-built GCC 16
cross-compiler to build target runtime libraries before libatomic
itself is ready.

Link: https://github.com/gcc-mirror/gcc/commit/e63cf4b130b86dd7dde1bf499d3d40faca10ea2e
Signed-off-by: Hemanth Kumar M D <Hemanth.KumarMD@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/recipes-devtools/gcc/gcc-runtime.inc b/meta/recipes-devtools/gcc/gcc-runtime.inc
index ef38cff58a82fa3a06005bb808b6a75ad8191bfa..d975153bc2138c4ff698ba06773076677e1af31a 100644 (file)
--- a/meta/recipes-devtools/gcc/gcc-runtime.inc
+++ b/meta/recipes-devtools/gcc/gcc-runtime.inc
@@ -15,6 +15,9 @@ EXTRA_OECONF_PATHS = "\
     --with-build-sysroot=${STAGING_DIR_TARGET} \
 "
 
+TARGET_CC_ARCH += "-fno-link-libatomic"
+SDK_CC_ARCH += "-fno-link-libatomic"
+
 EXTRA_OECONF:append:linuxstdbase = " --enable-clocale=gnu"
 EXTRA_OECONF:append = " --cache-file=${B}/config.cache"
 EXTRA_OECONF:append:libc-newlib = " --with-newlib --with-target-subdir"