1# Copyright 2023 The BoringSSL Authors 2# 3# Permission to use, copy, modify, and/or distribute this software for any 4# purpose with or without fee is hereby granted, provided that the above 5# copyright notice and this permission notice appear in all copies. 6# 7# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 8# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 9# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 10# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 11# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 12# OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 13# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 14 15# Go is an optional dependency. It's a necessary dependency if running tests or 16# the FIPS build, which will check these. 17find_program(GO_EXECUTABLE go) 18 19function(require_go) 20 if(NOT GO_EXECUTABLE) 21 message(FATAL_ERROR "Could not find Go") 22 endif() 23endfunction() 24 25function(go_executable dest package) 26 require_go() 27 set(godeps "${PROJECT_SOURCE_DIR}/util/godeps.go") 28 if(NOT CMAKE_GENERATOR STREQUAL "Ninja") 29 # The DEPFILE parameter to add_custom_command only works with Ninja. Query 30 # the sources at configure time. Additionally, everything depends on go.mod. 31 # That affects what external packages to use. 32 # 33 # TODO(davidben): Starting CMake 3.20, it also works with Make. Starting 34 # 3.21, it works with Visual Studio and Xcode too. 35 execute_process(COMMAND ${GO_EXECUTABLE} run ${godeps} -format cmake 36 -pkg ${package} 37 WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} 38 OUTPUT_VARIABLE sources 39 RESULT_VARIABLE godeps_result) 40 add_custom_command(OUTPUT ${dest} 41 COMMAND ${GO_EXECUTABLE} build 42 -o ${CMAKE_CURRENT_BINARY_DIR}/${dest} ${package} 43 WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} 44 DEPENDS ${sources} ${PROJECT_SOURCE_DIR}/go.mod) 45 else() 46 # Ninja expects the target in the depfile to match the output. This is a 47 # relative path from the build directory. 48 binary_dir_relative_path(${dest} target) 49 50 set(depfile "${CMAKE_CURRENT_BINARY_DIR}/${dest}.d") 51 add_custom_command(OUTPUT ${dest} 52 COMMAND ${GO_EXECUTABLE} build 53 -o ${CMAKE_CURRENT_BINARY_DIR}/${dest} ${package} 54 COMMAND ${GO_EXECUTABLE} run ${godeps} -format depfile 55 -target ${target} -pkg ${package} -out ${depfile} 56 WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} 57 DEPENDS ${godeps} ${PROJECT_SOURCE_DIR}/go.mod 58 DEPFILE ${depfile}) 59 endif() 60endfunction() 61 62