clang: Fix nativesdk builds to use clang-native

- User lld for linking nativesdk-clang
- Enable LTO to build nativesdk-clang
- Use -static-libgcc when using gold/lld for nativesdk clang build
- Use llvm wrappers for ar ranlib and nm to help LTO
- Package and create cross versions of lld

Signed-off-by: Khem Raj <raj.khem@gmail.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/recipes-devtools/clang/clang-cross_git.bb b/recipes-devtools/clang/clang-cross_git.bb
index f7d58b6..01bdfd8 100644
--- a/recipes-devtools/clang/clang-cross_git.bb
+++ b/recipes-devtools/clang/clang-cross_git.bb
@@ -24,6 +24,10 @@ do_install() {
         do
                 ln -sf ../$tool ${D}${bindir}/${TARGET_PREFIX}$tool
         done
+        if [ -e ${D}${bindir}/lld ]; then
+            ln -sf ../lld ${D}${bindir}/${TARGET_PREFIX}lld
+            ln -sf ../ld.lld ${D}${bindir}/${TARGET_PREFIX}ld.lld
+        fi
 }
 
 SYSROOT_PREPROCESS_FUNCS += "clangcross_sysroot_preprocess"
@@ -32,5 +36,5 @@ clangcross_sysroot_preprocess () {
         sysroot_stage_dir ${D}${bindir} ${SYSROOT_DESTDIR}${bindir}
 }
 SSTATE_SCAN_FILES += "*-clang *-clang++ *-llvm-profdata *-llvm-ar \
-                      *-llvm-ranlib *-llvm-nm"
+                      *-llvm-ranlib *-llvm-nm *-lld *-ld.lld"
 PACKAGES = ""