51 lines
2.1 KiB
CMake
51 lines
2.1 KiB
CMake
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# 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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