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Diffstat (limited to 'media/libjxl/src/tools/git_version.cmake')
| -rw-r--r-- | media/libjxl/src/tools/git_version.cmake | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/media/libjxl/src/tools/git_version.cmake b/media/libjxl/src/tools/git_version.cmake new file mode 100644 index 0000000000..4d216e8f57 --- /dev/null +++ b/media/libjxl/src/tools/git_version.cmake @@ -0,0 +1,34 @@ +# Copyright (c) the JPEG XL Project Authors. All rights reserved. +# +# Use of this source code is governed by a BSD-style +# license that can be found in the LICENSE file. + +# git_version.cmake is a script which creates tools_version_git.h in the build +# directory if building from a git repository. +find_package(Git QUIET) + +# Check that this script was invoked with the necessary arguments. +if(NOT IS_DIRECTORY "${JPEGXL_ROOT_DIR}") + message(FATAL_ERROR "JPEGXL_ROOT_DIR is invalid") +endif() + +execute_process( + COMMAND "${GIT_EXECUTABLE}" rev-parse --short HEAD + OUTPUT_VARIABLE GIT_REV + WORKING_DIRECTORY "${JPEGXL_ROOT_DIR}" + OUTPUT_STRIP_TRAILING_WHITESPACE + ERROR_QUIET) + +# The define line in the file. +set(JPEGXL_VERSION_DEFINE "#define JPEGXL_VERSION \"${GIT_REV}\"\n") + +# Update the header file only if needed. +if(EXISTS "${DST}") + file(READ "${DST}" ORIG_DST) + if(NOT ORIG_DST STREQUAL JPEGXL_VERSION_DEFINE) + message(STATUS "Changing JPEGXL_VERSION to ${GIT_REV}") + file(WRITE "${DST}" "${JPEGXL_VERSION_DEFINE}") + endif() +else() + file(WRITE "${DST}" "${JPEGXL_VERSION_DEFINE}") +endif() |