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llvm-project/llvm/cmake/modules/LLVMExternalProjectUtils.cmake
Petr Hosek aac819b844 [CMake] Support stripping and linking output to .build-id directory 
When installing runtimes with install-runtimes-stripped, we don't want
to just strip them, we also want to preserve the debugging information
for potential debugging. To make it possible to later find the stripped
debugging information, we want to use the .build-id layout:

https://fedoraproject.org/wiki/RolandMcGrath/BuildID#Find_files_by_build_ID

That is, for libfoo.so with build ID abcdef1234, the debugging information
will be installed into lib/debug/.build-id/ab/cdef1234. llvm-objcopy
already has support for stripping files and linking the debugging
stripped output into the right location. However, CMake doesn't support
customizing strip invocation for the *-stripped targets. So instead, we
replace CMAKE_STRIP with a custom script that invokes llvm-objcopy with
the right command line flags.

Differential Revision: https://reviews.llvm.org/D59127

llvm-svn: 355765
2019-03-09 01:26:55 +00:00

281 lines
9.9 KiB
CMake
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include(ExternalProject)
# llvm_ExternalProject_BuildCmd(out_var target)
# Utility function for constructing command lines for external project targets
function(llvm_ExternalProject_BuildCmd out_var target bin_dir)
cmake_parse_arguments(ARG "" "CONFIGURATION" "" ${ARGN})
if(NOT ARG_CONFIGURATION)
set(ARG_CONFIGURATION "$<CONFIGURATION>")
endif()
if (CMAKE_GENERATOR MATCHES "Make")
# Use special command for Makefiles to support parallelism.
set(${out_var} "$(MAKE)" "-C" "${bin_dir}" "${target}" PARENT_SCOPE)
else()
set(${out_var} ${CMAKE_COMMAND} --build ${bin_dir} --target ${target}
--config ${ARG_CONFIGURATION} PARENT_SCOPE)
endif()
endfunction()
# llvm_ExternalProject_Add(name source_dir ...
# USE_TOOLCHAIN
# Use just-built tools (see TOOLCHAIN_TOOLS)
# EXCLUDE_FROM_ALL
# Exclude this project from the all target
# NO_INSTALL
# Don't generate install targets for this project
# ALWAYS_CLEAN
# Always clean the sub-project before building
# CMAKE_ARGS arguments...
# Optional cmake arguments to pass when configuring the project
# TOOLCHAIN_TOOLS targets...
# Targets for toolchain tools (defaults to clang;lld)
# DEPENDS targets...
# Targets that this project depends on
# EXTRA_TARGETS targets...
# Extra targets in the subproject to generate targets for
# PASSTHROUGH_PREFIXES prefix...
# Extra variable prefixes (name is always included) to pass down
# STRIP_TOOL path
# Use provided strip tool instead of the default one.
# )
function(llvm_ExternalProject_Add name source_dir)
cmake_parse_arguments(ARG
"USE_TOOLCHAIN;EXCLUDE_FROM_ALL;NO_INSTALL;ALWAYS_CLEAN"
"SOURCE_DIR"
"CMAKE_ARGS;TOOLCHAIN_TOOLS;RUNTIME_LIBRARIES;DEPENDS;EXTRA_TARGETS;PASSTHROUGH_PREFIXES;STRIP_TOOL"
${ARGN})
canonicalize_tool_name(${name} nameCanon)
if(NOT ARG_TOOLCHAIN_TOOLS)
set(ARG_TOOLCHAIN_TOOLS clang lld)
if(NOT APPLE AND NOT WIN32)
list(APPEND ARG_TOOLCHAIN_TOOLS llvm-ar llvm-ranlib llvm-nm llvm-objcopy llvm-objdump llvm-strip)
endif()
endif()
foreach(tool ${ARG_TOOLCHAIN_TOOLS})
if(TARGET ${tool})
list(APPEND TOOLCHAIN_TOOLS ${tool})
list(APPEND TOOLCHAIN_BINS $<TARGET_FILE:${tool}>)
endif()
endforeach()
if(NOT ARG_RUNTIME_LIBRARIES)
set(ARG_RUNTIME_LIBRARIES compiler-rt libcxx)
endif()
foreach(lib ${ARG_RUNTIME_LIBRARIES})
if(TARGET ${lib})
list(APPEND RUNTIME_LIBRARIES ${lib})
endif()
endforeach()
if(ARG_ALWAYS_CLEAN)
set(always_clean clean)
endif()
list(FIND TOOLCHAIN_TOOLS clang FOUND_CLANG)
if(FOUND_CLANG GREATER -1)
set(CLANG_IN_TOOLCHAIN On)
endif()
if(RUNTIME_LIBRARIES AND CLANG_IN_TOOLCHAIN)
list(APPEND TOOLCHAIN_BINS ${RUNTIME_LIBRARIES})
endif()
set(STAMP_DIR ${CMAKE_CURRENT_BINARY_DIR}/${name}-stamps/)
set(BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}/${name}-bins/)
add_custom_target(${name}-clear
COMMAND ${CMAKE_COMMAND} -E remove_directory ${BINARY_DIR}
COMMAND ${CMAKE_COMMAND} -E remove_directory ${STAMP_DIR}
COMMENT "Clobbering ${name} build and stamp directories"
USES_TERMINAL
)
# Find all variables that start with a prefix and propagate them through
get_cmake_property(variableNames VARIABLES)
list(APPEND ARG_PASSTHROUGH_PREFIXES ${nameCanon})
foreach(prefix ${ARG_PASSTHROUGH_PREFIXES})
foreach(variableName ${variableNames})
if(variableName MATCHES "^${prefix}")
string(REPLACE ";" "|" value "${${variableName}}")
list(APPEND PASSTHROUGH_VARIABLES
-D${variableName}=${value})
endif()
endforeach()
endforeach()
if(ARG_USE_TOOLCHAIN AND NOT CMAKE_CROSSCOMPILING)
if(CLANG_IN_TOOLCHAIN)
set(compiler_args -DCMAKE_C_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang
-DCMAKE_CXX_COMPILER=${LLVM_RUNTIME_OUTPUT_INTDIR}/clang++)
endif()
if(lld IN_LIST TOOLCHAIN_TOOLS)
list(APPEND compiler_args -DCMAKE_LINKER=${LLVM_RUNTIME_OUTPUT_INTDIR}/ld.lld)
endif()
if(llvm-ar IN_LIST TOOLCHAIN_TOOLS)
list(APPEND compiler_args -DCMAKE_AR=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-ar)
endif()
if(llvm-ranlib IN_LIST TOOLCHAIN_TOOLS)
list(APPEND compiler_args -DCMAKE_RANLIB=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-ranlib)
endif()
if(llvm-nm IN_LIST TOOLCHAIN_TOOLS)
list(APPEND compiler_args -DCMAKE_NM=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-nm)
endif()
if(llvm-objdump IN_LIST TOOLCHAIN_TOOLS)
list(APPEND compiler_args -DCMAKE_OBJDUMP=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-objdump)
endif()
if(llvm-objcopy IN_LIST TOOLCHAIN_TOOLS)
list(APPEND compiler_args -DCMAKE_OBJCOPY=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-objcopy)
endif()
if(llvm-strip IN_LIST TOOLCHAIN_TOOLS AND NOT ARG_STRIP_TOOL)
list(APPEND compiler_args -DCMAKE_STRIP=${LLVM_RUNTIME_OUTPUT_INTDIR}/llvm-strip)
endif()
list(APPEND ARG_DEPENDS ${TOOLCHAIN_TOOLS})
endif()
if(ARG_STRIP_TOOL)
list(APPEND compiler_args -DCMAKE_STRIP=${ARG_STRIP_TOOL})
endif()
add_custom_command(
OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp
DEPENDS ${ARG_DEPENDS}
COMMAND ${CMAKE_COMMAND} -E touch ${BINARY_DIR}/CMakeCache.txt
COMMAND ${CMAKE_COMMAND} -E touch ${STAMP_DIR}/${name}-mkdir
COMMAND ${CMAKE_COMMAND} -E touch ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp
COMMENT "Clobbering bootstrap build and stamp directories"
)
add_custom_target(${name}-clobber
DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp)
if(ARG_EXCLUDE_FROM_ALL)
set(exclude EXCLUDE_FROM_ALL 1)
endif()
if(CMAKE_SYSROOT)
set(sysroot_arg -DCMAKE_SYSROOT=${CMAKE_SYSROOT})
endif()
if(CMAKE_CROSSCOMPILING)
set(compiler_args -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
-DCMAKE_LINKER=${CMAKE_LINKER}
-DCMAKE_AR=${CMAKE_AR}
-DCMAKE_RANLIB=${CMAKE_RANLIB}
-DCMAKE_NM=${CMAKE_NM}
-DCMAKE_OBJCOPY=${CMAKE_OBJCOPY}
-DCMAKE_OBJDUMP=${CMAKE_OBJDUMP}
-DCMAKE_STRIP=${CMAKE_STRIP})
set(llvm_config_path ${LLVM_CONFIG_PATH})
if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
string(REGEX MATCH "[0-9]+\\.[0-9]+(\\.[0-9]+)?" CLANG_VERSION
${PACKAGE_VERSION})
set(resource_dir "${LLVM_LIBRARY_DIR}/clang/${CLANG_VERSION}")
set(flag_types ASM C CXX MODULE_LINKER SHARED_LINKER EXE_LINKER)
foreach(type ${flag_types})
set(${type}_flag -DCMAKE_${type}_FLAGS=-resource-dir=${resource_dir})
endforeach()
string(REPLACE ";" "|" flag_string "${flag_types}")
foreach(arg ${ARG_CMAKE_ARGS})
if(arg MATCHES "^-DCMAKE_(${flag_string})_FLAGS")
foreach(type ${flag_types})
if(arg MATCHES "^-DCMAKE_${type}_FLAGS")
string(REGEX REPLACE "^-DCMAKE_${type}_FLAGS=(.*)$" "\\1" flag_value "${arg}")
set(${type}_flag "${${type}_flag} ${flag_value}")
endif()
endforeach()
else()
list(APPEND cmake_args ${arg})
endif()
endforeach()
foreach(type ${flag_types})
list(APPEND cmake_args ${${type}_flag})
endforeach()
endif()
else()
set(llvm_config_path "$<TARGET_FILE:llvm-config>")
set(cmake_args ${ARG_CMAKE_ARGS})
endif()
ExternalProject_Add(${name}
DEPENDS ${ARG_DEPENDS} llvm-config
${name}-clobber
PREFIX ${CMAKE_BINARY_DIR}/projects/${name}
SOURCE_DIR ${source_dir}
STAMP_DIR ${STAMP_DIR}
BINARY_DIR ${BINARY_DIR}
${exclude}
CMAKE_ARGS ${${nameCanon}_CMAKE_ARGS}
${compiler_args}
-DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX}
${sysroot_arg}
-DLLVM_BINARY_DIR=${PROJECT_BINARY_DIR}
-DLLVM_CONFIG_PATH=${llvm_config_path}
-DLLVM_ENABLE_WERROR=${LLVM_ENABLE_WERROR}
-DLLVM_HOST_TRIPLE=${LLVM_HOST_TRIPLE}
-DLLVM_HAVE_LINK_VERSION_SCRIPT=${LLVM_HAVE_LINK_VERSION_SCRIPT}
-DPACKAGE_VERSION=${PACKAGE_VERSION}
-DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
-DCMAKE_MAKE_PROGRAM=${CMAKE_MAKE_PROGRAM}
-DCMAKE_EXPORT_COMPILE_COMMANDS=1
${cmake_args}
${PASSTHROUGH_VARIABLES}
INSTALL_COMMAND ""
STEP_TARGETS configure build
BUILD_ALWAYS 1
USES_TERMINAL_CONFIGURE 1
USES_TERMINAL_BUILD 1
USES_TERMINAL_INSTALL 1
LIST_SEPARATOR |
)
if(ARG_USE_TOOLCHAIN)
set(force_deps DEPENDS ${TOOLCHAIN_BINS})
endif()
llvm_ExternalProject_BuildCmd(run_clean clean ${BINARY_DIR})
ExternalProject_Add_Step(${name} clean
COMMAND ${run_clean}
COMMENT "Cleaning ${name}..."
DEPENDEES configure
${force_deps}
WORKING_DIRECTORY ${BINARY_DIR}
EXCLUDE_FROM_MAIN 1
USES_TERMINAL 1
)
ExternalProject_Add_StepTargets(${name} clean)
if(ARG_USE_TOOLCHAIN)
add_dependencies(${name}-clean ${name}-clobber)
set_target_properties(${name}-clean PROPERTIES
SOURCES ${CMAKE_CURRENT_BINARY_DIR}/${name}-clobber-stamp)
endif()
if(NOT ARG_NO_INSTALL)
install(CODE "execute_process\(COMMAND \${CMAKE_COMMAND} -DCMAKE_INSTALL_PREFIX=\${CMAKE_INSTALL_PREFIX} -DCMAKE_INSTALL_DO_STRIP=\${CMAKE_INSTALL_DO_STRIP} -P ${BINARY_DIR}/cmake_install.cmake\)"
COMPONENT ${name})
add_llvm_install_targets(install-${name}
DEPENDS ${name}
COMPONENT ${name})
endif()
# Add top-level targets
foreach(target ${ARG_EXTRA_TARGETS})
if(DEFINED ${target})
set(external_target "${${target}}")
else()
set(external_target "${target}")
endif()
llvm_ExternalProject_BuildCmd(build_runtime_cmd ${external_target} ${BINARY_DIR})
add_custom_target(${target}
COMMAND ${build_runtime_cmd}
DEPENDS ${name}-configure
WORKING_DIRECTORY ${BINARY_DIR}
VERBATIM
USES_TERMINAL)
endforeach()
endfunction()
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