1if(ANDROID) 2 # Android-NDK CMake files reconfigure the path and so Go won't be found. 3 # However, ninja will still find them in $PATH if we just name them. 4 if(NOT GO_EXECUTABLE) 5 set(GO_EXECUTABLE "go") 6 endif() 7else() 8 find_program(GO_EXECUTABLE go) 9endif() 10 11if(NOT GO_EXECUTABLE) 12 message(FATAL_ERROR "Could not find Go") 13endif() 14 15function(go_executable dest package) 16 set(godeps "${PROJECT_SOURCE_DIR}/util/godeps.go") 17 if(NOT CMAKE_GENERATOR STREQUAL "Ninja") 18 # The DEPFILE parameter to add_custom_command only works with Ninja. Query 19 # the sources at configure time. Additionally, everything depends on go.mod. 20 # That affects what external packages to use. 21 # 22 # TODO(davidben): Starting CMake 3.20, it also works with Make. Starting 23 # 3.21, it works with Visual Studio and Xcode too. 24 execute_process(COMMAND ${GO_EXECUTABLE} run ${godeps} -format cmake 25 -pkg ${package} 26 WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} 27 OUTPUT_VARIABLE sources 28 RESULT_VARIABLE godeps_result) 29 add_custom_command(OUTPUT ${dest} 30 COMMAND ${GO_EXECUTABLE} build 31 -o ${CMAKE_CURRENT_BINARY_DIR}/${dest} ${package} 32 WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} 33 DEPENDS ${sources} ${PROJECT_SOURCE_DIR}/go.mod) 34 else() 35 # Ninja expects the target in the depfile to match the output. This is a 36 # relative path from the build directory. 37 binary_dir_relative_path(${dest} target) 38 39 set(depfile "${CMAKE_CURRENT_BINARY_DIR}/${dest}.d") 40 add_custom_command(OUTPUT ${dest} 41 COMMAND ${GO_EXECUTABLE} build 42 -o ${CMAKE_CURRENT_BINARY_DIR}/${dest} ${package} 43 COMMAND ${GO_EXECUTABLE} run ${godeps} -format depfile 44 -target ${target} -pkg ${package} -out ${depfile} 45 WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} 46 DEPENDS ${godeps} ${PROJECT_SOURCE_DIR}/go.mod 47 DEPFILE ${depfile}) 48 endif() 49endfunction() 50 51