[CMake] Unbreak add_llvm_external_project when external projects are specified.

LLVM_EXTERNAL_*_SOURCE_DIR is reset as PATH with set(CACHE PATH).
Then the CACHE PATH variable, LLVM_EXTERNAL_*_SOURCE_DIR, is normalized as
${CMAKE_SOURCE_DIR}/${path_var} if ${path_var} is relative.

llvm-svn: 242120
This commit is contained in:
NAKAMURA Takumi 2015-07-14 05:12:53 +00:00
parent 6033cde4ab
commit 07289582f7

View File

@ -696,6 +696,9 @@ macro(add_llvm_external_project name)
endif()
if(NOT LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR)
set(LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/${add_llvm_external_dir}")
else()
set(LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR
CACHE PATH "Path to ${name} source directory")
endif()
if (EXISTS ${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR}/CMakeLists.txt)
option(LLVM_EXTERNAL_${nameUPPER}_BUILD