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