monero/cmake/Version.cmake

# Copyright (c) 2014-2019, The Monero Project
# 
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# Redistribution and use in source and binary forms, with or without modification, are
# permitted provided that the following conditions are met:
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# 1. Redistributions of source code must retain the above copyright notice, this list of
#    conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright notice, this list
#    of conditions and the following disclaimer in the documentation and/or other
#    materials provided with the distribution.
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# 3. Neither the name of the copyright holder nor the names of its contributors may be
#    used to endorse or promote products derived from this software without specific
#    prior written permission.
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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function (write_static_version_header hash)
  set(VERSIONTAG "${hash}")
  configure_file("${CMAKE_SOURCE_DIR}/src/version.cpp.in" "${CMAKE_BINARY_DIR}/version.cpp")
endfunction ()

find_package(Git QUIET)
if ("$Format:$" STREQUAL "")
  # We're in a tarball; use hard-coded variables.
  write_static_version_header("release")
elseif (GIT_FOUND OR Git_FOUND)
  message(STATUS "Found Git: ${GIT_EXECUTABLE}")
  add_custom_command(
    OUTPUT            "${CMAKE_BINARY_DIR}/version.cpp"
    COMMAND           "${CMAKE_COMMAND}"
                      "-D" "GIT=${GIT_EXECUTABLE}"
                      "-D" "TO=${CMAKE_BINARY_DIR}/version.cpp"
                      "-P" "cmake/GenVersion.cmake"
    WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}")
else()
  message(STATUS "WARNING: Git was not found!")
  write_static_version_header("unknown")
endif ()
add_custom_target(genversion ALL
  DEPENDS "${CMAKE_BINARY_DIR}/version.cpp")