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# Copyright (C) 2008-2010 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.
execute_process(
COMMAND git describe --match init --dirty=+ --abbrev=12
WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
OUTPUT_VARIABLE rev_info
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_QUIET
)
# 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)
message("")
message(STATUS "WARNING - No revision-information found")
# Ok, since we have no valid ways of finding/setting the revision, let's force some defaults
set(rev_hash_str "Archive")
set(rev_hash "0")
set(rev_id_str "0")
set(rev_id "0")
else()
# Extract revision and hash from git
string(REGEX REPLACE init-|[0-9]+-g "" rev_hash_str ${rev_info})
string(REGEX REPLACE [+]+ "" rev_hash ${rev_hash_str})
string(REGEX REPLACE init-|-g[^+]+ "" rev_id_str ${rev_info})
string(REGEX REPLACE [+]+ "" rev_id ${rev_id_str})
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_id_cached}" MATCHES "${rev_id_str}")
configure_file(
"${CMAKE_SOURCE_DIR}/revision.h.in.cmake"
"${BUILDDIR}/revision.h"
@ONLY
)
set(rev_id_cached "${rev_id_str}" CACHE INTERNAL "Cached revision ID")
endif()
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