CMake: Introduce LLVM_CLANG_SOURCE_DIR, "tools/clang" by default. Clang will not be built if LLVM_CLANG_SOURCE_DIR="" or ${LLVM_CLANG_SOURCE_DIR}/CMakeLists.txt is not found.

llvm-svn: 142103
This commit is contained in:
NAKAMURA Takumi 2011-10-16 02:54:33 +00:00
parent 914f1924e0
commit bccadaf1a3
2 changed files with 10 additions and 2 deletions

View File

@ -351,6 +351,11 @@
Function Interface library. If the library or its headers are
installed on a custom location, you can set the variables
FFI_INCLUDE_DIR and FFI_LIBRARY_DIR. Defaults to OFF.</dd>
<dt><b>LLVM_CLANG_SOURCE_DIR</b>:PATH</dt>
<dd>Path to Clang's source directory. Defaults to tools/clang.
Clang will not be built when it is empty or it does not point valid
path.</dd>
</dl>
</div>

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@ -59,11 +59,14 @@ if( LLVM_ENABLE_PIC )
endif()
endif()
if( EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/clang/CMakeLists.txt )
set(LLVM_CLANG_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/clang" CACHE PATH "Path to Clang source directory")
if (NOT ${LLVM_CLANG_SOURCE_DIR} STREQUAL ""
AND EXISTS ${LLVM_CLANG_SOURCE_DIR}/CMakeLists.txt)
option(LLVM_BUILD_CLANG "Whether to build Clang as part of LLVM" ON)
if (${LLVM_BUILD_CLANG})
add_subdirectory( ${CMAKE_CURRENT_SOURCE_DIR}/clang )
endif()
endif( EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/clang/CMakeLists.txt )
endif ()
set(LLVM_COMMON_DEPENDS ${LLVM_COMMON_DEPENDS} PARENT_SCOPE)