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CMakeLists.txt.versioning
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CMakeLists.txt.versioning
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# This CMake module is used to generate semantic version information for the AWS IoT Device Client
# and inject it into our source code, making the version information available to the compiled binary
# so that it can be written to the logs for debugging purposes. To increment the major/minor versions
# of the device client, this module expects to find a git tag in the form of "v1.0", where the first number
# is the major version and the second number is the minor version. This module will search starting at HEAD
# until it finds the latest versioned tag - git tags that do not start with "v" will be ignored.
#
# Additionally, the PATCH version of the version number is automatically incremented based on the number of commits
# that we see between the current revision and the latest Git tag. For more information on Semantic Versioning,
# check out https://semver.org/ and for more information on Git tags, check out https://git-scm.com/book/en/v2/Git-Basics-Tagging
cmake_minimum_required(VERSION 3.10)
# Check to make sure we have Git info for this package
execute_process(COMMAND git log --pretty=format:'%h' -n 1
OUTPUT_VARIABLE GIT_INFO
ERROR_QUIET)
if (GIT_VERSION AND NOT ${GIT_INFO} STREQUAL "")
message("-- Using Git to calculate AWS IoT Device Client version information...")
# Get last tag from git - this only matches tags starting with v, so we ignore non-versioning tags
execute_process(COMMAND ${GIT_EXECUTABLE} describe --abbrev=0 --tags --match "v[0-9]*"
WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
OUTPUT_VARIABLE ${PROJECT_NAME}_VERSION_STRING
OUTPUT_STRIP_TRAILING_WHITESPACE)
# Determine how many commits since last tag
execute_process(COMMAND ${GIT_EXECUTABLE} rev-list ${${PROJECT_NAME}_VERSION_STRING}..HEAD --count
WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
OUTPUT_VARIABLE ${PROJECT_NAME}_VERSION_AHEAD
OUTPUT_STRIP_TRAILING_WHITESPACE)
# Get current commit SHA from git
execute_process(COMMAND ${GIT_EXECUTABLE} rev-parse --short HEAD
WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
OUTPUT_VARIABLE ${PROJECT_NAME}_VERSION_GIT_SHA
OUTPUT_STRIP_TRAILING_WHITESPACE)
# Collect the partial versions into a list
string(REGEX MATCHALL "[0-9]+" ${PROJECT_NAME}_PARTIAL_VERSION_LIST
${${PROJECT_NAME}_VERSION_STRING})
# Set the version numbers
list(GET ${PROJECT_NAME}_PARTIAL_VERSION_LIST
0 ${PROJECT_NAME}_VERSION_MAJOR)
list(GET ${PROJECT_NAME}_PARTIAL_VERSION_LIST
1 ${PROJECT_NAME}_VERSION_MINOR)
set(${PROJECT_NAME}_VERSION_PATCH ${${PROJECT_NAME}_VERSION_AHEAD})
# Unset the list
unset(${PROJECT_NAME}_PARTIAL_VERSION_LIST)
# Set full project version string
set(${PROJECT_NAME}_VERSION_STRING_FULL
v${${PROJECT_NAME}_VERSION_MAJOR}.${${PROJECT_NAME}_VERSION_MINOR}.${${PROJECT_NAME}_VERSION_PATCH}-${${PROJECT_NAME}_VERSION_GIT_SHA})
message("-- Generated AWS IoT Device Client version: ${${PROJECT_NAME}_VERSION_STRING_FULL}")
# Save version to file (which will be used when Git is not available
# or VERSION_UPDATE_FROM_GIT is disabled)
file(WRITE ${CMAKE_SOURCE_DIR}/.version ${${PROJECT_NAME}_VERSION_STRING_FULL}
"*" ${${PROJECT_NAME}_VERSION_STRING}
"*" ${${PROJECT_NAME}_VERSION_MAJOR}
"*" ${${PROJECT_NAME}_VERSION_MINOR}
"*" ${${PROJECT_NAME}_VERSION_PATCH}
"*" ${${PROJECT_NAME}_VERSION_AHEAD}
"*" ${${PROJECT_NAME}_VERSION_GIT_SHA})
else()
# Git is not available (this is the case if the source is packaged as an archive), get version from file
file(STRINGS ${CMAKE_SOURCE_DIR}/.version ${PROJECT_NAME}_VERSION_LIST)
string(REPLACE "*" ";" ${PROJECT_NAME}_VERSION_LIST ${${PROJECT_NAME}_VERSION_LIST})
# Set partial versions
list(GET ${PROJECT_NAME}_VERSION_LIST 0 ${PROJECT_NAME}_VERSION_STRING_FULL)
list(GET ${PROJECT_NAME}_VERSION_LIST 1 ${PROJECT_NAME}_VERSION_STRING)
list(GET ${PROJECT_NAME}_VERSION_LIST 2 ${PROJECT_NAME}_VERSION_MAJOR)
list(GET ${PROJECT_NAME}_VERSION_LIST 3 ${PROJECT_NAME}_VERSION_MINOR)
list(GET ${PROJECT_NAME}_VERSION_LIST 4 ${PROJECT_NAME}_VERSION_PATCH)
list(GET ${PROJECT_NAME}_VERSION_LIST 5 ${PROJECT_NAME}_VERSION_AHEAD)
list(GET ${PROJECT_NAME}_VERSION_LIST 6 ${PROJECT_NAME}_VERSION_GIT_SHA)
unset(${PROJECT_NAME}_VERSION_LIST)
message("-- Loaded AWS IoT Device Client version: ${${PROJECT_NAME}_VERSION_STRING_FULL}")
endif()