[oe] [PATCH] clang: Allow user to add extra build target on class_target

[Ricardo Ribalda Delgado]

Originally TARGETS_TO_BUILD was limited to the target architecture,
which is not enough to build code for heterogenous systems such as (in
my case) AMDGPU.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda at gmail.com>
---
 recipes-devtools/clang/clang_git.bb | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/recipes-devtools/clang/clang_git.bb b/recipes-devtools/clang/clang_git.bb
index 01ad644a01a5..6c7de15c480b 100644
--- a/recipes-devtools/clang/clang_git.bb
+++ b/recipes-devtools/clang/clang_git.bb
@@ -62,6 +62,9 @@ PACKAGECONFIG[libcplusplus] = "-DCLANG_DEFAULT_CXX_STDLIB=libc++,,libcxx"
 LLVM_TARGETS_TO_BUILD ?= "AArch64;ARM;Mips;PowerPC;X86"
 LLVM_TARGETS_TO_BUILD_append = ";${@get_clang_host_arch(bb, d)};${@get_clang_target_arch(bb, d)}"
 
+LLVM_TARGETS_TO_BUILD_TARGET ?= ""
+LLVM_TARGETS_TO_BUILD_TARGET_append ?= "${@get_clang_target_arch(bb, d)}"
+
 EXTRA_OECMAKE="-DLLVM_ENABLE_RTTI=True \
                -DLLVM_ENABLE_EH=True \
                -DLLVM_ENABLE_FFI=False \
@@ -84,7 +87,7 @@ EXTRA_OECMAKE_append_class-target = "\
                -DLLVM_ENABLE_PIC=ON \
                -DLLVM_TABLEGEN=${STAGING_BINDIR_NATIVE}/llvm-tblgen \
                -DCLANG_TABLEGEN=${STAGING_BINDIR_NATIVE}/clang-tblgen \
-               -DLLVM_TARGETS_TO_BUILD=${@get_clang_target_arch(bb, d)} \
+               -DLLVM_TARGETS_TO_BUILD='${LLVM_TARGETS_TO_BUILD_TARGET}' \
                -DLLVM_TARGET_ARCH=${@get_clang_target_arch(bb, d)} \
                -DLLVM_DEFAULT_TARGET_TRIPLE=${TARGET_SYS} \
 "
-- 
2.13.2