Evgeny Proydakov | e3dab6f | 2021-02-07 21:18:31 +0300 | [diff] [blame] | 1 | # Copyright (C) 2020 Google, Inc. |
Evgeny Proydakov | 05798c1 | 2021-02-07 15:37:03 +0300 | [diff] [blame] | 2 | # |
| 3 | # Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | # you may not use this file except in compliance with the License. |
| 5 | # You may obtain a copy of the License at |
| 6 | # |
| 7 | # https://www.apache.org/licenses/LICENSE-2.0 |
| 8 | # |
| 9 | # Unless required by applicable law or agreed to in writing, software |
| 10 | # distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | # See the License for the specific language governing permissions and |
| 13 | # limitations under the License. |
| 14 | |
| 15 | # parse_version() reads and parses the version string from FILE, assigning the |
| 16 | # version string to ${PROJECT}_VERSION and the parsed version to |
| 17 | # ${PROJECT}_VERSION_MAJOR, ${PROJECT}_VERSION_MINOR, ${PROJECT}_VERSION_PATCH, |
| 18 | # and the optional ${PROJECT}_VERSION_FLAVOR. |
| 19 | # |
| 20 | # The version string take one of the forms: |
| 21 | # <major>.<minor>.<patch> |
| 22 | # <major>.<minor>.<patch>-<flavor> |
| 23 | function(parse_version FILE PROJECT) |
| 24 | configure_file(${FILE} "${CMAKE_CURRENT_BINARY_DIR}/CHANGES.md") # Required to re-run cmake on version change |
| 25 | file(READ ${FILE} CHANGES) |
| 26 | if(${CHANGES} MATCHES "#+ *([0-9]+)\\.([0-9]+)\\.([0-9]+)(-[a-zA-Z0-9]+)?") |
| 27 | set(FLAVOR "") |
| 28 | if(NOT "${CMAKE_MATCH_4}" STREQUAL "") |
| 29 | string(SUBSTRING ${CMAKE_MATCH_4} 1 -1 FLAVOR) |
| 30 | endif() |
| 31 | set("${PROJECT}_VERSION_MAJOR" ${CMAKE_MATCH_1} PARENT_SCOPE) |
| 32 | set("${PROJECT}_VERSION_MINOR" ${CMAKE_MATCH_2} PARENT_SCOPE) |
| 33 | set("${PROJECT}_VERSION_PATCH" ${CMAKE_MATCH_3} PARENT_SCOPE) |
| 34 | set("${PROJECT}_VERSION_FLAVOR" ${FLAVOR} PARENT_SCOPE) |
| 35 | set("${PROJECT}_VERSION" |
| 36 | "${CMAKE_MATCH_1}.${CMAKE_MATCH_2}.${CMAKE_MATCH_3}${CMAKE_MATCH_4}" |
| 37 | PARENT_SCOPE) |
| 38 | else() |
| 39 | message(FATAL_ERROR "Unable to parse version from '${FILE}'") |
| 40 | endif() |
| 41 | endfunction() |