1# - Find bison executable and provides macros to generate custom build rules 2# The module defined the following variables: 3# BISON_EXECUTABLE - path to the bison program 4# BISON_VERSION - version of bison 5# BISON_FOUND - true if the program was found 6# If bison is found, the module defines the macros: 7# BISON_TARGET(<Name> <YaccInput> <CodeOutput> [VERBOSE <file>] 8# [COMPILE_FLAGS <string>]) 9# which will create a custom rule to generate a parser. <YaccInput> is 10# the path to a yacc file. <CodeOutput> is the name of the source file 11# generated by bison. A header file is also be generated, and contains 12# the token list. If COMPILE_FLAGS option is specified, the next 13# parameter is added in the bison command line. if VERBOSE option is 14# specified, <file> is created and contains verbose descriptions of the 15# grammar and parser. The macro defines a set of variables: 16# BISON_${Name}_DEFINED - true is the macro ran successfully 17# BISON_${Name}_INPUT - The input source file, an alias for <YaccInput> 18# BISON_${Name}_OUTPUT_SOURCE - The source file generated by bison 19# BISON_${Name}_OUTPUT_HEADER - The header file generated by bison 20# BISON_${Name}_OUTPUTS - The sources files generated by bison 21# BISON_${Name}_COMPILE_FLAGS - Options used in the bison command line 22# 23# Example: 24# FIND_PACKAGE(BISON) 25# BISON_TARGET(MyParser parser.y ${PROJECT_BINARY_DIR}/parser.cpp) 26# ADD_EXECUTABLE(Foo main.cpp ${BISON_MyParser_OUTPUTS}) 27# 28 29# Copyright (c) 2006, Tristan Carel 30# All rights reserved. 31# Redistribution and use in source and binary forms, with or without 32# modification, are permitted provided that the following conditions are met: 33# 34# * Redistributions of source code must retain the above copyright 35# notice, this list of conditions and the following disclaimer. 36# * Redistributions in binary form must reproduce the above copyright 37# notice, this list of conditions and the following disclaimer in the 38# documentation and/or other materials provided with the distribution. 39# * Neither the name of the University of California, Berkeley nor the 40# names of its contributors may be used to endorse or promote products 41# derived from this software without specific prior written permission. 42# 43# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY 44# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 45# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 46# DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY 47# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 48# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 49# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 50# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 51# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 52# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 53 54# $Id:: FindBISON.cmake 3 2006-11-03 02:42:02Z ken $ 55 56SET(BISON_FOUND FALSE) 57 58FIND_PROGRAM(BISON_EXECUTABLE bison DOC "path to the bison executable") 59MARK_AS_ADVANCED(BISON_EXECUTABLE) 60 61IF(BISON_EXECUTABLE) 62 SET(BISON_FOUND TRUE) 63 64 EXECUTE_PROCESS(COMMAND ${BISON_EXECUTABLE} --version 65 OUTPUT_VARIABLE BISON_version_output 66 ERROR_VARIABLE BISON_version_error 67 RESULT_VARIABLE BISON_version_result 68 OUTPUT_STRIP_TRAILING_WHITESPACE) 69 IF(NOT ${BISON_version_result} EQUAL 0) 70 MESSAGE(SEND_ERROR "Command \"${BISON_EXECUTABLE} --version\" failed with output:\n${BISON_version_error}") 71 ELSE(NOT ${BISON_version_result} EQUAL 0) 72 STRING(REGEX REPLACE "^bison \\(GNU Bison\\) ([^\n]+)\n.*" "\\1" 73 BISON_VERSION "${BISON_version_output}") 74 ENDIF(NOT ${BISON_version_result} EQUAL 0) 75 76 # internal macro 77 MACRO(BISON_TARGET_option_verbose Name BisonOutput filename) 78 LIST(APPEND BISON_TARGET_cmdopt "--verbose") 79 GET_FILENAME_COMPONENT(BISON_TARGET_output_path "${BisonOutput}" PATH) 80 GET_FILENAME_COMPONENT(BISON_TARGET_output_name "${BisonOutput}" NAME_WE) 81 ADD_CUSTOM_COMMAND(OUTPUT ${filename} 82 COMMAND ${CMAKE_COMMAND} 83 ARGS -E copy 84 "${BISON_TARGET_output_path}/${BISON_TARGET_output_name}.output" 85 "${filename}" 86 DEPENDS 87 "${BISON_TARGET_output_path}/${BISON_TARGET_output_name}.output" 88 COMMENT "[BISON][${Name}] Copying bison verbose table to ${filename}" 89 WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}) 90 SET(BISON_${Name}_VERBOSE_FILE ${filename}) 91 LIST(APPEND BISON_TARGET_extraoutputs 92 "${BISON_TARGET_output_path}/${BISON_TARGET_output_name}.output") 93 ENDMACRO(BISON_TARGET_option_verbose) 94 95 # internal macro 96 MACRO(BISON_TARGET_option_extraopts Options) 97 SET(BISON_TARGET_extraopts "${Options}") 98 SEPARATE_ARGUMENTS(BISON_TARGET_extraopts) 99 LIST(APPEND BISON_TARGET_cmdopt ${BISON_TARGET_extraopts}) 100 ENDMACRO(BISON_TARGET_option_extraopts) 101 102 MACRO(BISON_TARGET Name BisonInput BisonOutput) 103 SET(BISON_TARGET_output_header "") 104 SET(BISON_TARGET_command_opt "") 105 SET(BISON_TARGET_outputs "${BisonOutput}") 106 IF(NOT ${ARGC} EQUAL 3 AND NOT ${ARGC} EQUAL 5 AND NOT ${ARGC} EQUAL 7) 107 MESSAGE(SEND_ERROR "Usage") 108 ELSE(NOT ${ARGC} EQUAL 3 AND NOT ${ARGC} EQUAL 5 AND NOT ${ARGC} EQUAL 7) 109 # Parsing parameters 110 IF(${ARGC} GREATER 5 OR ${ARGC} EQUAL 5) 111 IF("${ARGV3}" STREQUAL "VERBOSE") 112 BISON_TARGET_option_verbose(${Name} ${BisonOutput} "${ARGV4}") 113 ENDIF("${ARGV3}" STREQUAL "VERBOSE") 114 IF("${ARGV3}" STREQUAL "COMPILE_FLAGS") 115 BISON_TARGET_option_extraopts("${ARGV4}") 116 ENDIF("${ARGV3}" STREQUAL "COMPILE_FLAGS") 117 ENDIF(${ARGC} GREATER 5 OR ${ARGC} EQUAL 5) 118 IF(${ARGC} EQUAL 7) 119 IF("${ARGV5}" STREQUAL "VERBOSE") 120 BISON_TARGET_option_verbose(${Name} ${BisonOutput} "${ARGV6}") 121 ENDIF("${ARGV5}" STREQUAL "VERBOSE") 122 IF("${ARGV5}" STREQUAL "COMPILE_FLAGS") 123 BISON_TARGET_option_extraopts("${ARGV6}") 124 ENDIF("${ARGV5}" STREQUAL "COMPILE_FLAGS") 125 ENDIF(${ARGC} EQUAL 7) 126 127 # Header's name generated by bison (see option -d) 128 LIST(APPEND BISON_TARGET_cmdopt "-d") 129 STRING(REGEX REPLACE "^(.*)(\\.[^.]*)$" "\\2" _fileext "${ARGV2}") 130 STRING(REPLACE "c" "h" _fileext ${_fileext}) 131 STRING(REGEX REPLACE "^(.*)(\\.[^.]*)$" "\\1${_fileext}" 132 BISON_${Name}_OUTPUT_HEADER "${ARGV2}") 133 LIST(APPEND BISON_TARGET_outputs "${BISON_${Name}_OUTPUT_HEADER}") 134 135 ADD_CUSTOM_COMMAND(OUTPUT ${BISON_TARGET_outputs} 136 ${BISON_TARGET_extraoutputs} 137 COMMAND ${BISON_EXECUTABLE} 138 ARGS ${BISON_TARGET_cmdopt} -o ${ARGV2} ${ARGV1} 139 DEPENDS ${ARGV1} 140 COMMENT "[BISON][${Name}] Building parser with bison ${BISON_VERSION}" 141 WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}) 142 143 # define target variables 144 SET(BISON_${Name}_DEFINED TRUE) 145 SET(BISON_${Name}_INPUT ${ARGV1}) 146 SET(BISON_${Name}_OUTPUTS ${BISON_TARGET_outputs}) 147 SET(BISON_${Name}_COMPILE_FLAGS ${BISON_TARGET_cmdopt}) 148 SET(BISON_${Name}_OUTPUT_SOURCE "${BisonOutput}") 149 150 ENDIF(NOT ${ARGC} EQUAL 3 AND NOT ${ARGC} EQUAL 5 AND NOT ${ARGC} EQUAL 7) 151 ENDMACRO(BISON_TARGET) 152 153ENDIF(BISON_EXECUTABLE) 154 155 156IF(NOT BISON_FOUND) 157 IF(NOT BISON_FIND_QUIETLY) 158 MESSAGE(STATUS "BISON was not found.") 159 ELSE(NOT BISON_FIND_QUIETLY) 160 IF(BISON_FIND_REQUIRED) 161 MESSAGE(FATAL_ERROR "BISON was not found.") 162 ENDIF(BISON_FIND_REQUIRED) 163 ENDIF(NOT BISON_FIND_QUIETLY) 164ENDIF(NOT BISON_FOUND) 165 166# FindBISON.cmake ends here 167