llvm: fix link error for powerpc

fix below link error for powerpc

lib/libLLVMSupport.a(CommandLine.cpp.o): in function `llvm::cl::opt_storage<(anonymous namespace):
:HelpPrinterWrapper, true, true>::setLocation(llvm::cl::Option&, (anonymous namespace)::HelpPrinterWrapper&) [clone .isra.189]':
/usr/src/debug/llvm/8.0-r0/git/llvm/include/llvm/Support/CommandLine.h:1218:(.text.startup+0x5c):
relocation truncated to fit: R_PPC_PLTREL24 against symbol `llvm::errs()' defined in .text section in lib/libLLVMSupport.a(raw_ostream.cpp.o)+8000
lib/libLLVMSupport.a(CommandLine.cpp.o): in function `setLocation':

(From OE-Core rev: 5302047be6bcdae85a43f9b09778a91dcd03b191)

Signed-off-by: Changqing Li <changqing.li@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/meta/recipes-devtools/llvm/llvm_git.bb b/meta/recipes-devtools/llvm/llvm_git.bb
index 7832441482..0067635c2b 100644
--- a/meta/recipes-devtools/llvm/llvm_git.bb
+++ b/meta/recipes-devtools/llvm/llvm_git.bb
@@ -86,6 +86,8 @@ EXTRA_OECMAKE_append_class-nativesdk = "\
                   -DLLVM_CONFIG_PATH=${STAGING_BINDIR_NATIVE}/llvm-config${PV} \
                  "
 
+CXXFLAGS_append_class-target_powerpc = " -mlongcall"
+
 do_configure_prepend() {
 # Fix paths in llvm-config
         sed -i "s|sys::path::parent_path(CurrentPath))\.str()|sys::path::parent_path(sys::path::parent_path(CurrentPath))).str()|g" ${S}/tools/llvm-config/llvm-config.cpp