lyx_mirror/development/cmake/scripts/LyXGetVersion.cmake

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# Copyright (c) 2012-2014, Kornel Benko, <kornel@lyx.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. The name of the author may not be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# To call this script, one has to provide following parameters
# TOP_SRC_DIR
# TOP_CMAKE_PATH
# TOP_BINARY_DIR
# LYX_DATE: to be used if not under git control
set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true)
set(LYX_GIT_COMMIT_HASH "none")
FIND_PROGRAM(LYX_GITVERSION git)
if(LYX_GITVERSION)
# Override the value from configure.ac, if possible
EXECUTE_PROCESS(COMMAND ${LYX_GITVERSION} "log" "-1" "--format=%h %ci"
WORKING_DIRECTORY "${TOP_SRC_DIR}"
OUTPUT_VARIABLE LYX_DATEtmp OUTPUT_STRIP_TRAILING_WHITESPACE)
if(LYX_DATEtmp MATCHES "^([0-9a-f]+) ([0-9]+-[0-9]+-[0-9]+)")
set(LYX_GITHASH ${CMAKE_MATCH_1})
set(LYX_DATE ${CMAKE_MATCH_2})
message(STATUS "Git-hash = ${LYX_GITHASH}")
endif()
EXECUTE_PROCESS(COMMAND ${LYX_GITVERSION} log -1 "--pretty=format:%H"
WORKING_DIRECTORY "${TOP_SRC_DIR}" OUTPUT_VARIABLE lyxgitcommit OUTPUT_STRIP_TRAILING_WHITESPACE)
if (lyxgitcommit MATCHES "^[0-9a-f]+$")
set(LYX_GIT_COMMIT_HASH ${lyxgitcommit})
endif()
endif()
foreach(_hf lyx_date lyx_commit_hash)
if(NOT EXISTS ${TOP_BINARY_DIR}/${_hf}.h)
configure_file(${TOP_CMAKE_PATH}/${_hf}.h.cmake ${TOP_BINARY_DIR}/${_hf}.h)
else()
configure_file(${TOP_CMAKE_PATH}/${_hf}.h.cmake ${TOP_BINARY_DIR}/${_hf}.tmp)
message(STATUS "Created ${TOP_BINARY_DIR}/${_hf}.tmp")
EXECUTE_PROCESS(
COMMAND ${CMAKE_COMMAND} -E copy_if_different ${TOP_BINARY_DIR}/${_hf}.tmp ${TOP_BINARY_DIR}/${_hf}.h
ERROR_VARIABLE copy_err
)
if(copy_err)
message(FATAL_ERROR "${CMAKE_COMMAND} -E copy_if_different not working")
endif()
EXECUTE_PROCESS(
COMMAND ${CMAKE_COMMAND} -E remove ${TOP_BINARY_DIR}/${_hf}.tmp
)
endif()
endforeach()