1 include(ExternalProject)
3 # llvm_ExternalProject_BuildCmd(out_var target)
4 # Utility function for constructing command lines for external project targets
5 function(llvm_ExternalProject_BuildCmd out_var target)
6 if (CMAKE_GENERATOR MATCHES "Make")
7 # Use special command for Makefiles to support parallelism.
8 set(${out_var} "$(MAKE)" "${target}" PARENT_SCOPE)
10 set(${out_var} ${CMAKE_COMMAND} --build . --target ${target}
11 --config $<CONFIGURATION> PARENT_SCOPE)
15 # llvm_ExternalProject_Add(name source_dir ...
17 # Use just-built tools (see TOOLCHAIN_TOOLS)
19 # Exclude this project from the all target
21 # Don't generate install targets for this project
22 # CMAKE_ARGS arguments...
23 # Optional cmake arguments to pass when configuring the project
24 # TOOLCHAIN_TOOLS targets...
25 # Targets for toolchain tools (defaults to clang;lld)
27 # Targets that this project depends on
28 # EXTRA_TARGETS targets...
29 # Extra targets in the subproject to generate targets for
31 function(llvm_ExternalProject_Add name source_dir)
32 cmake_parse_arguments(ARG "USE_TOOLCHAIN;EXCLUDE_FROM_ALL;NO_INSTALL"
34 "CMAKE_ARGS;TOOLCHAIN_TOOLS;RUNTIME_LIBRARIES;DEPENDS;EXTRA_TARGETS" ${ARGN})
35 canonicalize_tool_name(${name} nameCanon)
36 if(NOT ARG_TOOLCHAIN_TOOLS)
37 set(ARG_TOOLCHAIN_TOOLS clang lld)
39 foreach(tool ${ARG_TOOLCHAIN_TOOLS})
41 list(APPEND TOOLCHAIN_TOOLS ${tool})
42 list(APPEND TOOLCHAIN_BINS $<TARGET_FILE:${tool}>)
46 if(NOT ARG_RUNTIME_LIBRARIES)
47 set(ARG_RUNTIME_LIBRARIES compiler-rt libcxx)
49 foreach(lib ${ARG_RUNTIME_LIBRARIES})
51 list(APPEND RUNTIME_LIBRARIES ${lib})
55 list(FIND TOOLCHAIN_TOOLS clang FOUND_CLANG)
56 if(FOUND_CLANG GREATER -1)
57 set(CLANG_IN_TOOLCHAIN On)
60 if(RUNTIME_LIBRARIES AND CLANG_IN_TOOLCHAIN)
61 list(APPEND TOOLCHAIN_BINS ${RUNTIME_LIBRARIES})
64 if(CMAKE_VERSION VERSION_GREATER 3.1.0)
65 set(cmake_3_1_EXCLUDE_FROM_ALL EXCLUDE_FROM_ALL 1)
68 if(CMAKE_VERSION VERSION_GREATER 3.3.20150708)
69 set(cmake_3_4_USES_TERMINAL_OPTIONS
70 USES_TERMINAL_CONFIGURE 1
72 USES_TERMINAL_INSTALL 1
74 set(cmake_3_4_USES_TERMINAL USES_TERMINAL 1)
77 if(CMAKE_VERSION VERSION_GREATER 3.1.20141116)
78 set(cmake_3_2_USES_TERMINAL USES_TERMINAL)
81 set(STAMP_DIR ${CMAKE_CURRENT_BINARY_DIR}/${name}-stamps/)
82 set(BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}/${name}-bins/)
84 add_custom_target(${name}-clear
85 COMMAND ${CMAKE_COMMAND} -E remove_directory ${BINARY_DIR}
86 COMMAND ${CMAKE_COMMAND} -E remove_directory ${STAMP_DIR}
87 COMMENT "Clobbering ${name} build and stamp directories"
88 ${cmake_3_2_USES_TERMINAL}
91 # Find all variables that start with COMPILER_RT and populate a variable with
93 get_cmake_property(variableNames VARIABLES)
94 foreach(varaibleName ${variableNames})
95 if(varaibleName MATCHES "^${nameCanon}")
96 list(APPEND PASSTHROUGH_VARIABLES
97 -D${varaibleName}=${${varaibleName}})
101 if(ARG_USE_TOOLCHAIN)
102 if(CLANG_IN_TOOLCHAIN)
103 set(compiler_args -DCMAKE_C_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang
104 -DCMAKE_CXX_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang++)
106 list(APPEND ARG_DEPENDS ${TOOLCHAIN_TOOLS})
110 OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp
111 DEPENDS ${ARG_DEPENDS}
112 COMMAND ${CMAKE_COMMAND} -E touch ${BINARY_DIR}/CMakeCache.txt
113 COMMAND ${CMAKE_COMMAND} -E touch ${STAMP_DIR}/${name}-mkdir
114 COMMAND ${CMAKE_COMMAND} -E touch ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp
115 COMMENT "Clobbering bootstrap build and stamp directories"
118 add_custom_target(${name}-clobber
119 DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp)
121 if(ARG_EXCLUDE_FROM_ALL)
122 set(exclude ${cmake_3_1_EXCLUDE_FROM_ALL})
125 ExternalProject_Add(${name}
126 DEPENDS ${ARG_DEPENDS}
128 PREFIX ${CMAKE_BINARY_DIR}/projects/${name}
129 SOURCE_DIR ${source_dir}
130 STAMP_DIR ${STAMP_DIR}
131 BINARY_DIR ${BINARY_DIR}
133 CMAKE_ARGS ${${nameCanon}_CMAKE_ARGS}
135 -DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX}
137 ${PASSTHROUGH_VARIABLES}
139 STEP_TARGETS configure build
140 ${cmake_3_4_USES_TERMINAL_OPTIONS}
143 if(ARG_USE_TOOLCHAIN)
144 ExternalProject_Add_Step(${name} force-rebuild
145 COMMENT "Forcing rebuild becaues tools have changed"
147 DEPENDS ${TOOLCHAIN_BINS}
148 ${cmake_3_4_USES_TERMINAL} )
151 if(ARG_USE_TOOLCHAIN)
152 set(force_deps DEPENDS ${TOOLCHAIN_BINS})
155 llvm_ExternalProject_BuildCmd(run_clean clean)
156 ExternalProject_Add_Step(${name} clean
158 COMMENT "Cleaning ${name}..."
161 WORKING_DIRECTORY ${BINARY_DIR}
162 ${cmake_3_4_USES_TERMINAL}
164 ExternalProject_Add_StepTargets(${name} clean)
166 if(ARG_USE_TOOLCHAIN)
167 add_dependencies(${name}-clean ${name}-clobber)
168 set_target_properties(${name}-clean PROPERTIES
169 SOURCES ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp)
172 if(NOT ARG_NO_INSTALL)
173 install(CODE "execute_process\(COMMAND \${CMAKE_COMMAND} -DCMAKE_INSTALL_PREFIX=\${CMAKE_INSTALL_PREFIX} -P ${BINARY_DIR}/cmake_install.cmake \)"
176 add_custom_target(install-${name}
178 COMMAND "${CMAKE_COMMAND}"
179 -DCMAKE_INSTALL_COMPONENT=${name}
180 -P "${CMAKE_BINARY_DIR}/cmake_install.cmake"
181 ${cmake_3_2_USES_TERMINAL})
184 # Add top-level targets
185 foreach(target ${ARG_EXTRA_TARGETS})
186 llvm_ExternalProject_BuildCmd(build_runtime_cmd ${target})
187 add_custom_target(${target}
188 COMMAND ${build_runtime_cmd}
189 DEPENDS ${name}-configure
190 WORKING_DIRECTORY ${BINARY_DIR}
192 ${cmake_3_2_USES_TERMINAL})