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46e51018d5
not defined behaviour cmake command copy_if_different in case, the destination is not present
70 lines
2.7 KiB
CMake
70 lines
2.7 KiB
CMake
# Copyright (c) 2012, Kornel Benko, <kornel@lyx.org>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. The name of the author may not be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# To call this script, one has to provide following parameters
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# TOP_SRC_DIR
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# TOP_CMAKE_PATH
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# TOP_BINARY_DIR
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# LYX_DATE: to be used if not under git control
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set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true)
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FIND_PROGRAM(LYX_GITVERSION git)
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if(LYX_GITVERSION)
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# Override the value from configure.ac, if possible
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EXECUTE_PROCESS(COMMAND ${LYX_GITVERSION} "log" "-1" "--format=%h %ci"
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WORKING_DIRECTORY "${TOP_SRC_DIR}"
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OUTPUT_VARIABLE LYX_DATEtmp OUTPUT_STRIP_TRAILING_WHITESPACE)
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if(LYX_DATEtmp MATCHES "^([0-9a-f]+) ([0-9]+-[0-9]+-[0-9]+)")
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set(LYX_GITHASH ${CMAKE_MATCH_1})
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set(LYX_DATE ${CMAKE_MATCH_2})
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message(STATUS "Git-hash = ${LYX_GITHASH}")
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endif()
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endif()
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if(NOT EXISTS ${TOP_BINARY_DIR}/lyx_date.h)
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configure_file(${TOP_CMAKE_PATH}/lyx_date.h.cmake ${TOP_BINARY_DIR}/lyx_date.h)
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else()
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configure_file(${TOP_CMAKE_PATH}/lyx_date.h.cmake ${TOP_BINARY_DIR}/lyx_date.tmp)
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message(STATUS "Created ${TOP_BINARY_DIR}/lyx_date.tmp")
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EXECUTE_PROCESS(
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COMMAND ${CMAKE_COMMAND} -E copy_if_different ${TOP_BINARY_DIR}/lyx_date.tmp ${TOP_BINARY_DIR}/lyx_date.h
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ERROR_VARIABLE copy_err
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)
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if(copy_err)
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message(FATAL_ERROR "${CMAKE_COMMAND} -E ${copy_command} not working")
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endif()
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EXECUTE_PROCESS(
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COMMAND ${CMAKE_COMMAND} -E remove ${TOP_BINARY_DIR}/lyx_date.tmp
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)
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endif()
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