| # Copyright 2020 The Marl Authors. |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # https://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| # parse_version() reads and parses the version string from FILE, assigning the |
| # version string to ${PROJECT}_VERSION and the parsed version to |
| # ${PROJECT}_VERSION_MAJOR, ${PROJECT}_VERSION_MINOR, ${PROJECT}_VERSION_PATCH, |
| # and the optional ${PROJECT}_VERSION_FLAVOR. |
| # |
| # The version string take one of the forms: |
| # <major>.<minor>.<patch> |
| # <major>.<minor>.<patch>-<flavor> |
| function(parse_version FILE PROJECT) |
| configure_file(${FILE} "${CMAKE_CURRENT_BINARY_DIR}/CHANGES.md") # Required to re-run cmake on version change |
| file(READ ${FILE} CHANGES) |
| if(${CHANGES} MATCHES "#+ *([0-9]+)\\.([0-9]+)\\.([0-9]+)(-[a-zA-Z0-9]+)?") |
| set(FLAVOR "") |
| if(NOT "${CMAKE_MATCH_4}" STREQUAL "") |
| string(SUBSTRING ${CMAKE_MATCH_4} 1 -1 FLAVOR) |
| endif() |
| set("${PROJECT}_VERSION_MAJOR" ${CMAKE_MATCH_1} PARENT_SCOPE) |
| set("${PROJECT}_VERSION_MINOR" ${CMAKE_MATCH_2} PARENT_SCOPE) |
| set("${PROJECT}_VERSION_PATCH" ${CMAKE_MATCH_3} PARENT_SCOPE) |
| set("${PROJECT}_VERSION_FLAVOR" ${FLAVOR} PARENT_SCOPE) |
| set("${PROJECT}_VERSION" |
| "${CMAKE_MATCH_1}.${CMAKE_MATCH_2}.${CMAKE_MATCH_3}${CMAKE_MATCH_4}" |
| PARENT_SCOPE) |
| else() |
| message(FATAL_ERROR "Unable to parse version from '${FILE}'") |
| endif() |
| endfunction() |