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0a1d8c1aaa
This moves the generated files out of the source tree and into the build directory. They are now regenerated each time they are needed, based on the timestamp of the generated file compared to the timestamp of the lemon file. To do this, we also bundle lemon into the thirdparty directory and build it for ourselves since it is a very tiny program and not all platforms seem to distribute it in a consistent manner. Fixes https://gitlab.com/kicad/code/kicad/issues/5013
51 lines
2.1 KiB
CMake
51 lines
2.1 KiB
CMake
# This program source code file is part of KICAD, a free EDA CAD application.
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#
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# Copyright (C) 2020 Kicad Developers, see AUTHORS.txt for contributors.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, you may find one here:
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# http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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# or you may search the http://www.gnu.org website for the version 2 license,
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# or you may write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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#
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# This file takes the following variables as arguments:
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# * LEMON_EXE - The absolute path to the lemon executable
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# * LEMON_TEMPLATE - The absolute path to the lemon template file
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# * GRAMMAR_FILE - The file of the grammar to use
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# * GRAMMAR_DIR - An absolute path to where the grammar should be generated
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# Get the name without extension
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get_filename_component( GRAMMAR_BASE ${GRAMMAR_FILE} NAME_WE )
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# Only regenerate the lemon code if the grammar is newer than the current code
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if( ${GRAMMAR_FILE} IS_NEWER_THAN ${GRAMMAR_DIR}/${GRAMMAR_BASE}.c )
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execute_process(
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COMMAND ${LEMON_EXE} -T${LEMON_TEMPLATE} -d${GRAMMAR_DIR} -q ${GRAMMAR_FILE}
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WORKING_DIRECTORY ${GRAMMAR_DIR}
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OUTPUT_VARIABLE _lemon_output
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ERROR_VARIABLE _lemon_error
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RESULT_VARIABLE _lemon_result
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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if( NOT ${_lemon_result} EQUAL 0)
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message( FATAL_ERROR "Lemon generator for ${GRAMMAR_FILE} has failed\n"
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"Error: ${_lemon_error}" )
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endif()
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endif()
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