42 lines
1.3 KiB
CMake
42 lines
1.3 KiB
CMake
################################################################
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# Name: ScannerParser.cmake
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# Purpose: If flex/bison are available, generate parser and scanner
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# Author: Cas Cremers
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################################################################
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# Make the scanner using flex, if it can be found
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include(FindFLEX.cmake)
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if (FLEX_FOUND)
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set_source_files_properties(scanner.c PROPERTIES GENERATED true)
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ADD_CUSTOM_COMMAND (
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OUTPUT scanner.c
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DEPENDS scanner.l
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COMMAND ${FLEX_EXECUTABLE}
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# TODO: I should look up from which version the -o
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# switch works, might not be portable.
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ARGS -oscanner.c scanner.l
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COMMENT "Building scanner.c from scanner.l using flex"
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)
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else (FLEX_FOUND)
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message (STATUS "Because flex is not found, we will use the existing scanner.c")
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endif (FLEX_FOUND)
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# Make the parser using bison, if it can be found
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include(FindBISON.cmake)
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if (BISON_FOUND)
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set_source_files_properties(parser.c PROPERTIES GENERATED true)
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ADD_CUSTOM_COMMAND (
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OUTPUT parser.c
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DEPENDS parser.y
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COMMAND ${BISON_EXECUTABLE}
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# TODO: I should look up from which version the -o
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# switch works, might not be portable.
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ARGS -d -oparser.c parser.y
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COMMENT "Building parser.c from parser.y using bison"
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)
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else (BISON_FOUND)
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message (STATUS "Because bison is not found, we will use the existing parser.c")
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endif (BISON_FOUND)
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