While making lld build under the tools directory I decided to refactor how this
works.
There is now a macro, add_llvm_external_project, which takes the name of the
expected subdirectory. This sets up two CMake options.
* LLVM_EXTERNAL_${NAME}_SOURCE_DIR
This is the path to the source. It defaults to
${CMAKE_CURRENT_SOURCE_DIR}/${name}.
* LLVM_EXTERNAL_${NAME}_BUILD
Enable and disable building the tool as part of LLVM.
I chose LLVM_EXTERNAL_${NAME} as a prefix so they all show up together in the
GUI.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155654
91177308-0d34-0410-b5e6-
96231b3b80d8
add_llvm_library(LLVM${target_name} ${ARGN} ${TABLEGEN_OUTPUT})
set( CURRENT_LLVM_TARGET LLVM${target_name} )
endmacro(add_llvm_target)
+
+# Add external project that may want to be built as part of llvm such as Clang,
+# 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.
+macro(add_llvm_external_project name)
+ string(TOUPPER ${name} nameUPPER)
+ set(LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/${name}"
+ 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})
+ endif()
+ endif()
+endmacro(add_llvm_external_project)
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>
+ <dt><b>LLVM_EXTERNAL_{CLANG,LLD,POLLY}_SOURCE_DIR</b>:PATH</dt>
+ <dd>Path to {Clang,lld,Polly}'s source directory. Defaults to
+ tools/{clang,lld,polly}. {Clang,lld,Polly} will not be built when it is
+ empty or it does not point valid path.</dd>
<dt><b>LLVM_USE_OPROFILE</b>:BOOL</dt>
<dd> Enable building OProfile JIT support. Defaults to OFF</dd>
# three small executables. This is done to minimize memory load in parallel
# builds. Please retain this ordering.
-# If polly exists and is not disabled compile it and add it to the LLVM tools.
-option(LLVM_BUILD_POLLY "Compile polly" ON)
-if( EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/polly/CMakeLists.txt )
- if (LLVM_BUILD_POLLY)
- add_subdirectory( ${CMAKE_CURRENT_SOURCE_DIR}/polly)
- endif (LLVM_BUILD_POLLY)
-endif( EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/polly/CMakeLists.txt )
-
if( NOT WIN32 OR MSYS OR CYGWIN )
# We currently require 'sed' to build llvm-config, so don't try to build it
# on pure Win32.
endif()
endif()
-set(LLVM_CLANG_SOURCE_DIR "${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(${LLVM_CLANG_SOURCE_DIR} clang)
- endif()
-endif ()
+add_llvm_external_project(clang)
+add_llvm_external_project(lld)
+add_llvm_external_project(polly)
set(LLVM_COMMON_DEPENDS ${LLVM_COMMON_DEPENDS} PARENT_SCOPE)