| if(ANDROID) | |
| # Android-NDK CMake files reconfigure the path and so Go won't be found. | |
| # However, ninja will still find them in $PATH if we just name them. | |
| if(NOT GO_EXECUTABLE) | |
| set(GO_EXECUTABLE "go") | |
| endif() | |
| else() | |
| find_program(GO_EXECUTABLE go) | |
| endif() | |
| if(NOT GO_EXECUTABLE) | |
| message(FATAL_ERROR "Could not find Go") | |
| endif() | |
| function(go_executable dest package) | |
| set(godeps "${PROJECT_SOURCE_DIR}/util/godeps.go") | |
| if(NOT CMAKE_GENERATOR STREQUAL "Ninja") | |
| # The DEPFILE parameter to add_custom_command only works with Ninja. Query | |
| # the sources at configure time. Additionally, everything depends on go.mod. | |
| # That affects what external packages to use. | |
| # | |
| # TODO(davidben): Starting CMake 3.20, it also works with Make. Starting | |
| # 3.21, it works with Visual Studio and Xcode too. | |
| execute_process(COMMAND ${GO_EXECUTABLE} run ${godeps} -format cmake | |
| -pkg ${package} | |
| WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} | |
| OUTPUT_VARIABLE sources | |
| RESULT_VARIABLE godeps_result) | |
| add_custom_command(OUTPUT ${dest} | |
| COMMAND ${GO_EXECUTABLE} build | |
| -o ${CMAKE_CURRENT_BINARY_DIR}/${dest} ${package} | |
| WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} | |
| DEPENDS ${sources} ${PROJECT_SOURCE_DIR}/go.mod) | |
| else() | |
| # Ninja expects the target in the depfile to match the output. This is a | |
| # relative path from the build directory. | |
| binary_dir_relative_path(${dest} target) | |
| set(depfile "${CMAKE_CURRENT_BINARY_DIR}/${dest}.d") | |
| add_custom_command(OUTPUT ${dest} | |
| COMMAND ${GO_EXECUTABLE} build | |
| -o ${CMAKE_CURRENT_BINARY_DIR}/${dest} ${package} | |
| COMMAND ${GO_EXECUTABLE} run ${godeps} -format depfile | |
| -target ${target} -pkg ${package} -out ${depfile} | |
| WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} | |
| DEPENDS ${godeps} ${PROJECT_SOURCE_DIR}/go.mod | |
| DEPFILE ${depfile}) | |
| endif() | |
| endfunction() | |