Commit f7bf0875 authored by Brad King's avatar Brad King 💬
Browse files

CMakeVersion: Provide Git information in non-exact release versions

Our exact release commits have a subject of the form `CMake <version>`.
Distinguish development on a release branch in commits after such a
version but before the next release by providing Git information.
parent ac482593
...@@ -34,17 +34,30 @@ if(EXISTS ${CMake_SOURCE_DIR}/.git) ...@@ -34,17 +34,30 @@ if(EXISTS ${CMake_SOURCE_DIR}/.git)
endif() endif()
endif() endif()
if(NOT CMake_VERSION_IS_RELEASE) # Try to identify the current development source version.
# Try to identify the current development source version. if(COMMAND _git)
# Get the commit checked out in this work tree.
_git(log -n 1 HEAD "--pretty=format:%h %s" --)
set(git_info "${_git_out}")
# Extract commit information if available.
if(git_info MATCHES "^([0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]?[0-9a-f]?)[0-9a-f]* (.*)$")
# Have commit information.
set(git_hash "${CMAKE_MATCH_1}")
set(git_subject "${CMAKE_MATCH_2}")
# If this is not the exact commit of a release, add dev info.
if(NOT "${git_subject}" MATCHES "^[Cc][Mm]ake ${CMake_VERSION}$")
set(CMake_VERSION "${CMake_VERSION}-g${git_hash}")
# If this is a work tree, check whether it is dirty.
if(COMMAND _git) if(COMMAND _git)
_git(rev-parse --verify -q --short=4 HEAD) _git(update-index -q --refresh)
_git(diff-index --name-only HEAD --)
if(_git_out) if(_git_out)
set(CMake_VERSION "${CMake_VERSION}-g${_git_out}") set(CMake_VERSION_IS_DIRTY 1)
_git(update-index -q --refresh)
_git(diff-index --name-only HEAD --)
endif() endif()
endif() endif()
endif() endif()
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