Files
Viano-Core/cmake/genrev.cmake
T
click 9bd8baf1ab Buildsystem/CMake: Fix an issue with MSVC not finding git-binary when updating the revisionhash/revisiondate + rename DISABLEGITCHECK parameter to WITHOUT_GIT (to adhere to our standard)
Also cleaned up the checks slightly + moved git-specific testing to its own macro (minor changes to shaurens original patch applied)
2013-02-11 20:04:27 +01:00

75 lines
2.9 KiB
CMake

# Copyright (C) 2008-2013 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.
# User has manually chosen to ignore the git-tests, so throw them a warning.
# This is done EACH compile so they can be alerted about the consequences.
if(WITHOUT_GIT)
message(STATUS "
By choosing the WITHOUT_GIT option, you waive all rights for support, and accept
that any or all requests for assistance by you to core developers will be rejected.
You, as user, take full responsibility for issues, problems etc that might arise
from using the core, as we we can not properly detect what codebase you're using.
We remind you that you need to use the repository and a proper version of git for
the revision/hash to work, and thus get our support if the need arises.
")
set(rev_date "1970-01-01 00:00:00 +0000")
set(rev_hash "Archived")
else()
# Workaround for funny MSVC behaviour - this segment only run during compile
if(NOT BUILDDIR)
set(BUILDDIR ${CMAKE_BINARY_DIR})
set(_GIT_EXEC ${GIT_EXECUTABLE})
endif()
if(_GIT_EXEC)
# Create a revision-string that we can use
execute_process(
COMMAND "${_GIT_EXEC}" describe --match init --dirty=+ --abbrev=12
WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
OUTPUT_VARIABLE rev_info
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_QUIET
)
# And grab the commits timestamp
execute_process(
COMMAND "${_GIT_EXEC}" show -s --format=%ci
WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
OUTPUT_VARIABLE rev_date
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_QUIET
)
endif()
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 "1970-01-01 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 ${rev_info})
endif()
# Create the actual revision.h file from the above params
if(NOT "${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()