CMake: make LLVM_OPTIMIZED_TABLEGEN friendly with LLVM_EXTERNAL_CLANG_SOURCE_DIR

This is need because of clang-tblgen

Differential Revision: https://reviews.llvm.org/D26483

llvm-svn: 286560
This commit is contained in:
Mehdi Amini 2016-11-11 04:27:59 +00:00
parent 0970ddb242
commit e8e98dcb74
1 changed files with 5 additions and 0 deletions

View File

@ -41,10 +41,15 @@ function(llvm_create_cross_target_internal target_name toolchain buildtype)
if (buildtype)
set(build_type_flags "-DCMAKE_BUILD_TYPE=${buildtype}")
endif()
if (LLVM_EXTERNAL_CLANG_SOURCE_DIR)
# Propagate LLVM_EXTERNAL_CLANG_SOURCE_DIR so that clang-tblgen can be built
set(external_clang_dir "-DLLVM_EXTERNAL_CLANG_SOURCE_DIR=${LLVM_EXTERNAL_CLANG_SOURCE_DIR}")
endif()
execute_process(COMMAND ${CMAKE_COMMAND} ${build_type_flags}
-G "${CMAKE_GENERATOR}" -DLLVM_TARGETS_TO_BUILD=${LLVM_TARGETS_TO_BUILD}
${CROSS_TOOLCHAIN_FLAGS_${target_name}} ${CMAKE_SOURCE_DIR}
-DLLVM_TARGET_IS_CROSSCOMPILE_HOST=TRUE
${external_clang_dir}
WORKING_DIRECTORY ${LLVM_${target_name}_BUILD} )
endif(NOT IS_DIRECTORY ${LLVM_${target_name}_BUILD})