cmake 函数编译第三方库

function(find_external_project_add)
set(options BUILD_SHARED_LIBRARY)
set(oneValueArgs NAME)
set(multiValueArgs DEPENDS EXPORT_LIBRARIES CONFIGURE_COMMANDS EXTRA_LINKS)
cmake_parse_arguments(Argument "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})

message(STATUS "==> Preparing add external project: ${CMAKE_SOURCE_DIR}/package/${Argument_NAME}")
message(STATUS " depends: ${Argument_DEPENDS}")
message(STATUS " libraries: ${Argument_EXPORT_LIBRARIES}")
message(STATUS " configs: ${Argument_CONFIGURE_COMMANDS}")

get_property(${Argument_NAME}_FOUND GLOBAL PROPERTY ${Argument_NAME}_FOUND_PROPERTY)
get_property(${Argument_NAME}_INCLUDE_DIRS GLOBAL PROPERTY ${Argument_NAME}_INCLUDE_DIRS_PROPERTY)
get_property(${Argument_NAME}_LIBRARIES GLOBAL PROPERTY ${Argument_NAME}_LIBRARIES_PROPERTY)
get_property(${Argument_NAME}_EXTRA_LINKS GLOBAL PROPERTY ${Argument_NAME}_EXTRA_LINKS)

if (${Argument_NAME}_FOUND)
message(STATUS "==> External project ${CMAKE_SOURCE_DIR}/package/${Argument_NAME} has existed!, exported libraries: ${${Argument_NAME}_LIBRARIES}")
set(${Argument_NAME}_FOUND ${${Argument_NAME}_FOUND} PARENT_SCOPE)
set(${Argument_NAME}_INCLUDE_DIRS ${${Argument_NAME}_INCLUDE_DIRS} PARENT_SCOPE)
set(${Argument_NAME}_LIBRARIES ${${Argument_NAME}_LIBRARIES} ${${Argument_NAME}_EXTRA_LINKS} PARENT_SCOPE)
else ()
if (Argument_EXPORT_LIBRARIES)
if (Argument_BUILD_SHARED_LIBRARY)
if(${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
set(LIBRARY_SUFFIX "dylib")
else()
set(LIBRARY_SUFFIX "so")
endif()
else ()
set(LIBRARY_SUFFIX "a")
endif()

message(STATUS "==> Handling exported libraries for \"${CMAKE_SYSTEM_NAME}\" platform")
set(new_library_paths "")
foreach (library_path IN LISTS Argument_EXPORT_LIBRARIES)
message(STATUS "==> Handling library: ${library_path}")
string(REGEX REPLACE "(.*)[.]so" "\\1" temp_library_path ${library_path})
string(REGEX REPLACE "(.*)[.]dylib" "\\1" temp_library_path ${library_path})
string(REGEX REPLACE "(.*)[.]a" "\\1" temp_library_path ${library_path})
string(JOIN "." new_library_path ${temp_library_path} ${LIBRARY_SUFFIX})
message(STATUS " >> ${new_library_path}")
list(APPEND new_library_paths ${new_library_path})
endforeach()
set(Argument_EXPORT_LIBRARIES ${new_library_paths})
message(STATUS "==> Exported libraries: ${Argument_EXPORT_LIBRARIES}")
endif()

message(STATUS "==> Added external project ${CMAKE_SOURCE_DIR}/package/${Argument_NAME}")
include(ExternalProject)

set(CMAKE_CONFIGURE_COMMAND
cmake
-DCMAKE_INSTALL_PREFIX=${CMAKE_INSTALL_PREFIX}
-DCMAKE_INSTALL_INCLUDEDIR=${CMAKE_INSTALL_INCLUDEDIR}
-DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
-DCUSTOM_CMAKE_SYSTEM_NAME=${CUSTOM_CMAKE_SYSTEM_NAME}
-DCUSTOM_CMAKE_XML_NAME=${CUSTOM_CMAKE_XML_NAME}
-DUSE_SYSTEM_SSL=${USE_SYSTEM_SSL}
-DOPENSSL_ROOT_DIR=${OPENSSL_ROOT_DIR}
${CMAKE_SOURCE_DIR}/package/${Argument_NAME}
${Argument_CONFIGURE_COMMANDS}
)

foreach (depend IN LISTS Argument_DEPENDS)
find_package(${depend} REQUIRED)
endforeach()

ExternalProject_Add(
${Argument_NAME}
PREFIX ${CMAKE_INSTALL_PREFIX}/../package/${Argument_NAME}
TMP_DIR ${CMAKE_INSTALL_PREFIX}/../package/${Argument_NAME}
SOURCE_DIR ${CMAKE_SOURCE_DIR}/package/${Argument_NAME}
DEPENDS ${Argument_DEPENDS}
CONFIGURE_COMMAND ${CMAKE_CONFIGURE_COMMAND}
BUILD_COMMAND make
BUILD_ALWAYS 1
INSTALL_COMMAND make install
)

set_property(GLOBAL PROPERTY ${Argument_NAME}_FOUND_PROPERTY ON)
set_property(GLOBAL PROPERTY ${Argument_NAME}_INCLUDE_DIRS_PROPERTY "${CMAKE_INSTALL_PREFIX}/include")
set_property(GLOBAL PROPERTY ${Argument_NAME}_LIBRARIES_PROPERTY "${Argument_EXPORT_LIBRARIES}")
set_property(GLOBAL PROPERTY ${Argument_NAME}_EXTRA_LINKS_PROPERTY "${Argument_EXTRA_LINKS}")

set(${Argument_NAME}_FOUND TRUE PARENT_SCOPE )
set(${Argument_NAME}_INCLUDE_DIRS ${CMAKE_INSTALL_PREFIX}/include PARENT_SCOPE )
if (Argument_EXPORT_LIBRARIES)
set(${Argument_NAME}_LIBRARIES ${Argument_EXPORT_LIBRARIES} ${Argument_EXTRA_LINKS} PARENT_SCOPE )
endif ()
endif ()

endfunction()