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[CMake] Refactor subdirectory inclusion code to take a project name.

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Summary:
This refactoring makes some of the code used to control including subdirectories parameterized so it can be re-used elsewhere.

Specifically I want to re-use this code in clang to be able to turn off specific tool subdirectories.

Reviewers: chapuni, filcab, bogner, Bigcheese

Subscribers: emaste, llvm-commits

Differential Revision: http://reviews.llvm.org/D13783

llvm-svn: 250835
This commit is contained in:
Chris Bieneman 2015-10-20 16:42:58 +00:00
parent c99c692d8e
commit fc5c467cf1
1 changed files with 34 additions and 23 deletions
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57
cmake/modules/AddLLVM.cmake
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@ -730,12 +730,10 @@ function(canonicalize_tool_name name output)
set(${output} "${nameUPPER}" PARENT_SCOPE)
endfunction(canonicalize_tool_name)
# 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 everything else.
# Additional parameter can be specified as the name of directory.
macro(add_llvm_external_project name)
# Custom add_subdirectory wrapper
# Takes in a project name (i.e. LLVM), the the subdirectory name, and an
# and an optional path if it differs from the name.
macro(add_llvm_subdirectory project type name)
set(add_llvm_external_dir "${ARGN}")
if("${add_llvm_external_dir}" STREQUAL "")
set(add_llvm_external_dir ${name})
@ -743,39 +741,48 @@ macro(add_llvm_external_project name)
canonicalize_tool_name(${name} nameUPPER)
if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${add_llvm_external_dir}/CMakeLists.txt)
# Treat it as in-tree subproject.
option(LLVM_TOOL_${nameUPPER}_BUILD
"Whether to build ${name} as part of LLVM" On)
mark_as_advanced(LLVM_TOOL_${name}_BUILD)
if(LLVM_TOOL_${nameUPPER}_BUILD)
option(${project}_${type}_${nameUPPER}_BUILD
"Whether to build ${name} as part of ${project}" On)
mark_as_advanced(${project}_${type}_${name}_BUILD)
if(${project}_${type}_${nameUPPER}_BUILD)
add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/${add_llvm_external_dir} ${add_llvm_external_dir})
# Don't process it in add_llvm_implicit_projects().
set(LLVM_TOOL_${nameUPPER}_BUILD OFF)
set(${project}_${type}_${nameUPPER}_BUILD OFF)
endif()
else()
set(LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR
"${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR}"
CACHE PATH "Path to ${name} source directory")
set(LLVM_TOOL_${nameUPPER}_BUILD_DEFAULT ON)
set(${project}_${type}_${nameUPPER}_BUILD_DEFAULT ON)
if(NOT LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR OR NOT EXISTS ${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR})
set(LLVM_TOOL_${nameUPPER}_BUILD_DEFAULT OFF)
set(${project}_${type}_${nameUPPER}_BUILD_DEFAULT OFF)
endif()
if("${LLVM_EXTERNAL_${nameUPPER}_BUILD}" STREQUAL "OFF")
set(LLVM_TOOL_${nameUPPER}_BUILD_DEFAULT OFF)
set(${project}_${type}_${nameUPPER}_BUILD_DEFAULT OFF)
endif()
option(LLVM_TOOL_${nameUPPER}_BUILD
option(${project}_${type}_${nameUPPER}_BUILD
"Whether to build ${name} as part of LLVM"
${LLVM_TOOL_${nameUPPER}_BUILD_DEFAULT})
if (LLVM_TOOL_${nameUPPER}_BUILD)
${${project}_${type}_${nameUPPER}_BUILD_DEFAULT})
if (${project}_${type}_${nameUPPER}_BUILD)
if(EXISTS ${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR})
add_subdirectory(${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR} ${add_llvm_external_dir})
elseif(NOT "${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR}" STREQUAL "")
message(WARNING "Nonexistent directory for ${name}: ${LLVM_EXTERNAL_${nameUPPER}_SOURCE_DIR}")
endif()
# FIXME: It'd be redundant.
set(LLVM_TOOL_${nameUPPER}_BUILD Off)
set(${project}_${type}_${nameUPPER}_BUILD Off)
endif()
endif()
endmacro(add_llvm_external_project)
endmacro()
# 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 everything else.
# Additional parameter can be specified as the name of directory.
macro(add_llvm_external_project name)
add_llvm_subdirectory(LLVM TOOL ${name})
endmacro()
macro(add_llvm_tool_subdirectory name)
add_llvm_external_project(${name})
@ -791,16 +798,20 @@ function(get_project_name_from_src_var var output)
endif()
endfunction()
function(create_llvm_tool_options)
function(create_subdirectory_options project type)
file(GLOB sub-dirs "${CMAKE_CURRENT_SOURCE_DIR}/*")
foreach(dir ${sub-dirs})
if(IS_DIRECTORY "${dir}" AND EXISTS "${dir}/CMakeLists.txt")
canonicalize_tool_name(${dir} name)
option(LLVM_TOOL_${name}_BUILD
"Whether to build ${name} as part of LLVM" On)
mark_as_advanced(LLVM_TOOL_${name}_BUILD)
option(${project}_${type}_${name}_BUILD
"Whether to build ${name} as part of ${project}" On)
mark_as_advanced(${project}_${type}_${name}_BUILD)
endif()
endforeach()
endfunction(create_subdirectory_options)
function(create_llvm_tool_options)
create_subdirectory_options(LLVM TOOL)
endfunction(create_llvm_tool_options)
function(add_llvm_implicit_projects)