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Use git to get full project version (#519)

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This gets us the full version (aka with the patch version), instead of
just major and minor version from user agent.

Falls back to the user agent if it fails.
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KTGH 2020-06-10 18:23:45 -04:00 committed by GitHub
parent 24bdb736f0
commit ec00fe5d5b
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1 changed files with 19 additions and 6 deletions
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25
CMakeLists.txt
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@ -53,12 +53,25 @@
]]
cmake_minimum_required(VERSION 3.12.0 FATAL_ERROR)
# Get the user agent and use it as a version
# This gets the string with the user agent from the header.
# This is so the maintainer doesn't actually need to update this manually.
file(STRINGS httplib.h _user_agent_match REGEX "User\-Agent.*cpp\-httplib/([0-9]+\.?)+")
# Need to pull out just the version for use
string(REGEX MATCH "([0-9]+\\.?)+" _httplib_version "${_user_agent_match}")
# Gets the latest tag as a string like "v0.6.6"
# Can silently fail if git isn't on the system
execute_process(COMMAND git describe --tags --abbrev=0
OUTPUT_VARIABLE _raw_version_string
ERROR_VARIABLE _git_tag_error
)
# execute_process can fail silenty, so check for an error
# if there was an error, just use the user agent as a version
if(_git_tag_error)
message(WARNING "cpp-httplib failed to find the latest git tag, falling back to using user agent as the version.")
# Get the user agent and use it as a version
# This gets the string with the user agent from the header.
# This is so the maintainer doesn't actually need to update this manually.
file(STRINGS httplib.h _raw_version_string REGEX "User\-Agent.*cpp\-httplib/([0-9]+\.?)+")
endif()
# Needed since git tags have "v" prefixing them.
# Also used if the fallback to user agent string is being used.
string(REGEX MATCH "([0-9]+\\.?)+" _httplib_version "${_raw_version_string}")
project(httplib VERSION ${_httplib_version} LANGUAGES CXX)