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# Copyright (C) 2008-2012 Trinity <http://www.trinitycore.org/>
#
# This file is free software; as a special exception the author gives
# unlimited permission to copy and/or distribute it, with or without
# modifications, as long as this notice is preserved.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
include(${CMAKE_SOURCE_DIR}/cmake/macros/EnsureVersion.cmake)
set(_REQUIRED_GIT_VERSION "1.7")
find_program(_GIT_EXEC
NAMES
git git.cmd
HINTS
ENV PATH
DOC "git installation path"
)
if(_GIT_EXEC)
execute_process(
COMMAND "${_GIT_EXEC}" --version
WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
OUTPUT_VARIABLE _GIT_VERSION
ERROR_QUIET
)
# make sure we're using minimum the required version of git, so the "dirty-testing" will work properly
ensure_version( "${_REQUIRED_GIT_VERSION}" "${_GIT_VERSION}" _GIT_VERSION_OK)
endif()
if(_GIT_VERSION_OK)
execute_process(
COMMAND "${_GIT_EXEC}" describe --match init --dirty=+ --abbrev=12
WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
OUTPUT_VARIABLE rev_info
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_QUIET
)
execute_process(
COMMAND "${_GIT_EXEC}" show -s --format=%ci
WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
OUTPUT_VARIABLE rev_date
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_QUIET
)
else()
message("")
message(STATUS "WARNING - Missing or outdated git - did you forget to install a recent version?")
message(STATUS "WARNING - Observe that for revision hash/date to work you need at least version ${_REQUIRED_GIT_VERSION}")
endif()
# Last minute check - ensure that we have a proper revision
# If everything above fails (means the user has erased the git revision control directory or removed the origin/HEAD tag)
if(NOT rev_info)
# No valid ways available to find/set the revision/hash, so let's force some defaults
message(STATUS "WARNING - Missing repository tags - you may need to pull tags with git fetch -t")
message(STATUS "WARNING - Continuing anyway - note that the versionstring will be set to 0000-00-00 00:00:00 (Archived)")
set(rev_date "0000-00-00 00:00:00 +0000")
set(rev_hash "Archived")
else()
# Extract information required to build a proper versionstring
string(REGEX REPLACE init-|[0-9]+-g "" rev_hash ${rev_info})
endif()
# Its not set during initial run
if(NOT BUILDDIR)
set(BUILDDIR ${CMAKE_BINARY_DIR})
endif()
# Create the actual revision.h file from the above params
if(NOT "${rev_hash_cached}" MATCHES "${rev_hash}")
configure_file(
"${CMAKE_SOURCE_DIR}/revision.h.in.cmake"
"${BUILDDIR}/revision.h"
@ONLY
)
set(rev_hash_cached "${rev_hash}" CACHE INTERNAL "Cached commit-hash")
endif()
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