1include(AddLLVM)
2include(LLVMExternalProjectUtils)
3
4
5function(llvm_create_cross_target project_name target_name toolchain buildtype)
6
7  if(NOT DEFINED ${project_name}_${target_name}_BUILD)
8    set(${project_name}_${target_name}_BUILD
9      "${CMAKE_CURRENT_BINARY_DIR}/${target_name}")
10    set(${project_name}_${target_name}_BUILD
11      ${${project_name}_${target_name}_BUILD} PARENT_SCOPE)
12    message(STATUS "Setting native build dir to " ${${project_name}_${target_name}_BUILD})
13  endif(NOT DEFINED ${project_name}_${target_name}_BUILD)
14
15  if (EXISTS ${LLVM_MAIN_SRC_DIR}/cmake/platforms/${toolchain}.cmake)
16    set(CROSS_TOOLCHAIN_FLAGS_INIT
17      -DCMAKE_TOOLCHAIN_FILE=\"${LLVM_MAIN_SRC_DIR}/cmake/platforms/${toolchain}.cmake\")
18  else()
19    set(CROSS_TOOLCHAIN_FLAGS_INIT
20      -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
21      -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
22      )
23  endif()
24  set(CROSS_TOOLCHAIN_FLAGS_${target_name} ${CROSS_TOOLCHAIN_FLAGS_INIT}
25    CACHE STRING "Toolchain configuration for ${target_name}")
26
27  # project specific version of the flags up above
28  set(CROSS_TOOLCHAIN_FLAGS_${project_name}_${target_name} ""
29    CACHE STRING "Toolchain configuration for ${Pproject_name}_${target_name}")
30
31  if (buildtype)
32    set(build_type_flags "-DCMAKE_BUILD_TYPE=${buildtype}")
33  endif()
34  if (LLVM_USE_LINKER AND NOT CMAKE_CROSSCOMPILING)
35    set(linker_flag "-DLLVM_USE_LINKER=${LLVM_USE_LINKER}")
36  endif()
37  if (LLVM_EXTERNAL_CLANG_SOURCE_DIR)
38    # Propagate LLVM_EXTERNAL_CLANG_SOURCE_DIR so that clang-tblgen can be built
39    set(external_clang_dir "-DLLVM_EXTERNAL_CLANG_SOURCE_DIR=${LLVM_EXTERNAL_CLANG_SOURCE_DIR}")
40  endif()
41
42  add_custom_command(OUTPUT ${${project_name}_${target_name}_BUILD}
43    COMMAND ${CMAKE_COMMAND} -E make_directory ${${project_name}_${target_name}_BUILD}
44    COMMENT "Creating ${${project_name}_${target_name}_BUILD}...")
45
46  add_custom_target(CREATE_${project_name}_${target_name}
47    DEPENDS ${${project_name}_${target_name}_BUILD})
48
49  # Escape semicolons in the targets list so that cmake doesn't expand
50  # them to spaces.
51  string(REPLACE ";" "$<SEMICOLON>" targets_to_build_arg
52         "${LLVM_TARGETS_TO_BUILD}")
53  string(REPLACE ";" "$<SEMICOLON>" experimental_targets_to_build_arg
54         "${LLVM_EXPERIMENTAL_TARGETS_TO_BUILD}")
55
56  string(REPLACE ";" "$<SEMICOLON>" llvm_enable_projects_arg
57         "${LLVM_ENABLE_PROJECTS}")
58  string(REPLACE ";" "$<SEMICOLON>" llvm_external_projects_arg
59         "${LLVM_EXTERNAL_PROJECTS}")
60
61  set(external_project_source_dirs)
62  foreach(project ${LLVM_EXTERNAL_PROJECTS})
63    canonicalize_tool_name(${project} name)
64    list(APPEND external_project_source_dirs
65         "-DLLVM_EXTERNAL_${name}_SOURCE_DIR=${LLVM_EXTERNAL_${name}_SOURCE_DIR}")
66  endforeach()
67
68  add_custom_command(OUTPUT ${${project_name}_${target_name}_BUILD}/CMakeCache.txt
69    COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}"
70        -DCMAKE_MAKE_PROGRAM="${CMAKE_MAKE_PROGRAM}"
71        ${CROSS_TOOLCHAIN_FLAGS_${target_name}} ${CMAKE_CURRENT_SOURCE_DIR}
72        ${CROSS_TOOLCHAIN_FLAGS_${project_name}_${target_name}}
73        -DLLVM_TARGET_IS_CROSSCOMPILE_HOST=TRUE
74        -DLLVM_TARGETS_TO_BUILD="${targets_to_build_arg}"
75        -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD="${experimental_targets_to_build_arg}"
76        -DLLVM_DEFAULT_TARGET_TRIPLE="${TARGET_TRIPLE}"
77        -DLLVM_TARGET_ARCH="${LLVM_TARGET_ARCH}"
78        -DLLVM_CHECK_ENABLED_PROJECTS="${LLVM_CHECK_ENABLED_PROJECTS}"
79        -DLLVM_ENABLE_PROJECTS="${llvm_enable_projects_arg}"
80        -DLLVM_EXTERNAL_PROJECTS="${llvm_external_projects_arg}"
81        ${external_project_source_dirs}
82        -DLLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN="${LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN}"
83        ${build_type_flags} ${linker_flag} ${external_clang_dir}
84        ${ARGN}
85    WORKING_DIRECTORY ${${project_name}_${target_name}_BUILD}
86    DEPENDS CREATE_${project_name}_${target_name}
87    COMMENT "Configuring ${target_name} ${project_name}...")
88
89  add_custom_target(CONFIGURE_${project_name}_${target_name}
90    DEPENDS ${${project_name}_${target_name}_BUILD}/CMakeCache.txt)
91
92endfunction()
93
94# Sets up a native build for a tool, used e.g. for cross-compilation and
95# LLVM_OPTIMIZED_TABLEGEN. Always builds in Release.
96# - target: The target to build natively
97# - output_path_var: A variable name which receives the path to the built target
98# - DEPENDS: Any additional dependencies for the target
99function(build_native_tool target output_path_var)
100  cmake_parse_arguments(ARG "" "" "DEPENDS" ${ARGN})
101
102  if(CMAKE_CONFIGURATION_TYPES)
103    set(output_path "${${PROJECT_NAME}_NATIVE_BUILD}/Release/bin/${target}")
104  else()
105    set(output_path "${${PROJECT_NAME}_NATIVE_BUILD}/bin/${target}")
106  endif()
107  set(output_path ${output_path}${LLVM_HOST_EXECUTABLE_SUFFIX})
108
109  llvm_ExternalProject_BuildCmd(build_cmd ${target} ${${PROJECT_NAME}_NATIVE_BUILD}
110                                CONFIGURATION Release)
111  add_custom_command(OUTPUT "${output_path}"
112                     COMMAND ${build_cmd}
113                     DEPENDS CONFIGURE_${PROJECT_NAME}_NATIVE ${ARG_DEPENDS}
114                     WORKING_DIRECTORY "${${PROJECT_NAME}_NATIVE_BUILD}"
115                     COMMENT "Building native ${target}..."
116                     USES_TERMINAL)
117  set(${output_path_var} "${output_path}" PARENT_SCOPE)
118endfunction()
119