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[CMake] Enhance add_llvm_external_project. 

- Substitute hyphen to underscore, s/-/_/g, as the variable name.
  - Additional parameter can be specified as the name of directory.

e.g.) add_llvm_external_project(clang-tools-extra extra)

  - LLVM_EXTERNAL_CLANG_TOOLS_EXTRA_SOURCE_DIR=/path/to/llvm-srcroot/tools/clang/tools/extra, by default.
  - Build directory is in ${CMAKE_CURRENT_BINARY_DIR}/extra

llvm-svn: 165311
This commit is contained in:
NAKAMURA Takumi 2012-10-05 14:10:17 +00:00
parent e3612f0f21
commit 700cd4053a
1 changed files with 9 additions and 3 deletions
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12
llvm/cmake/modules/AddLLVM.cmake
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@ -135,16 +135,22 @@ endmacro(add_llvm_target)
# lld, and Polly. This adds two options. One for the source directory of the
# project, which defaults to ${CMAKE_CURRENT_SOURCE_DIR}/${name}. Another to
# enable or disable building it with everthing else.
# Additional parameter can be specified as the name of directory.
macro(add_llvm_external_project name)
string(TOUPPER ${name} nameUPPER)
set(LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/${name}"
set(add_llvm_external_dir "${ARGN}")
if("${add_llvm_external_dir}" STREQUAL "")
set(add_llvm_external_dir ${name})
endif()
string(REPLACE "-" "_" nameUNDERSCORE ${name})
string(TOUPPER ${nameUNDERSCORE} nameUPPER)
set(LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/${add_llvm_external_dir}"
CACHE PATH "Path to ${name} source directory")
if (NOT ${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR} STREQUAL ""
AND EXISTS ${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR}/CMakeLists.txt)
option(LLVM_EXTERNAL_${nameUPPER}_BUILD
"Whether to build ${name} as part of LLVM" ON)
if (LLVM_EXTERNAL_${nameUPPER}_BUILD)
add_subdirectory(${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR} ${name})
add_subdirectory(${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR} ${add_llvm_external_dir})
endif()
endif()
endmacro(add_llvm_external_project)