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# /*
# For more information, please see: http://software.sci.utah.edu
# The MIT License
# Copyright (c) 2005-2006
# Scientific Computing and Imaging Institute, University of Utah
# License for the specific language governing rights and limitations under
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
# */
SET(PARSERS_FOUND FOOBAR)
# These variables need to be specified in order to get CMake not to
# barf on the IF(EXISTS ${BISON_EXECUTABLE} ..) expression even though
# the code shouldn't get called. By setting them to BISON_EXECUTABLE
SET(BISON_EXECUTABLE "BISON_EXECUTABLE-NOTFOUND" CACHE FILEPATH "bison executable")
SET(FLEX_EXECUTABLE "FLEX_EXECUTABLE-NOTFOUND" CACHE FILEPATH "flex executable")
# Mark these variables as advanced options
MARK_AS_ADVANCED(FORCE BISON_EXECUTABLE)
MARK_AS_ADVANCED(FORCE FLEX_EXECUTABLE)
# You need at least version 2.4 for this to work.
IF("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" LESS 2.4)
MESSAGE("You need at least version 2.4 for generating flex and bison parsers. Go get it from http://www.cmake.org/HTML/Download.html")
SET(PARSERS_FOUND 0)
ELSE("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" LESS 2.4)
FIND_PROGRAM(BISON_EXECUTABLE
NAMES bison
PATHS ${BISON_DIR} )
FIND_PROGRAM(FLEX_EXECUTABLE
NAMES flex
PATHS ${FLEX_DIR} )
IF(EXISTS ${BISON_EXECUTABLE} AND EXISTS ${FLEX_EXECUTABLE})
SET(PARSERS_FOUND 1)
ELSE(EXISTS ${BISON_EXECUTABLE} AND EXISTS ${FLEX_EXECUTABLE})
SET(PARSERS_FOUND 0)
# Print some error messages to the user
IF (NOT EXISTS ${BISON_EXECUTABLE})
MESSAGE("Couldn't find bison executable. Please check value in BISON_EXECUTABLE in advanced settings.")
ENDIF (NOT EXISTS ${BISON_EXECUTABLE})
IF (NOT EXISTS ${FLEX_EXECUTABLE})
MESSAGE("Couldn't find flex executable. Please check value in FLEX_EXECUTABLE in advanced settings.")
ENDIF (NOT EXISTS ${FLEX_EXECUTABLE})
ENDIF(EXISTS ${BISON_EXECUTABLE} AND EXISTS ${FLEX_EXECUTABLE})
ENDIF("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" LESS 2.4)
# These are helper functions for parsers.
# parser is the parser file name like parser.y
# lexer is like lexer.l
# The names of the output files will be based on the input names.
# BF_SOURCES will be parser.cc, parser.h and lexer.cc.
MACRO(GENERATE_BISON_FLEX_SOURCES parser parser_args
lexer lexer_args)
GET_FILENAME_COMPONENT(parser_base "${parser}" NAME_WE)
SET(BISON_TAB_C "${CMAKE_CURRENT_BINARY_DIR}/${parser_base}.tab.cc")
SET(BISON_TAB_H "${CMAKE_CURRENT_BINARY_DIR}/${parser_base}.tab.hh")
SET(BISON_CC "${CMAKE_CURRENT_BINARY_DIR}/${parser_base}.cc")
SET(BISON_H "${CMAKE_CURRENT_BINARY_DIR}/${parser_base}.h")
ADD_CUSTOM_COMMAND(
OUTPUT ${BISON_TAB_C} ${BISON_TAB_H}
COMMAND ${BISON_EXECUTABLE}
ARGS "${parser}" ${parser_args} "--defines"
DEPENDS "${parser}"
COMMENT "Generating ${BISON_TAB_C} ${BISON_TAB_H} from ${parser}"
)
ADD_CUSTOM_COMMAND(
OUTPUT ${BISON_CC}
COMMAND ${CMAKE_COMMAND}
ARGS -E copy ${BISON_TAB_C} ${BISON_CC}
DEPENDS ${BISON_TAB_C}
COMMENT "Copying ${BISON_TAB_C} to ${BISON_CC}"
)
ADD_CUSTOM_COMMAND(
OUTPUT ${BISON_H}
COMMAND ${CMAKE_COMMAND}
ARGS -E copy ${BISON_TAB_H} ${BISON_H}
DEPENDS ${BISON_TAB_H}
COMMENT "Copying ${BISON_TAB_H} to ${BISON_H}"
)
GET_FILENAME_COMPONENT(lexer_base "${lexer}" NAME_WE)
SET(FLEX_C "${CMAKE_CURRENT_BINARY_DIR}/lex.yy.c")
SET(FLEX_CC "${CMAKE_CURRENT_BINARY_DIR}/${lexer_base}.cc")
ADD_CUSTOM_COMMAND(
OUTPUT ${FLEX_C}
COMMAND ${FLEX_EXECUTABLE}
ARGS "${lexer}" ${lexer_args}
DEPENDS "${lexer}" ${BISON_H}
COMMENT "Generating ${FLEX_C} from ${lexer}"
)
ADD_CUSTOM_COMMAND(
OUTPUT ${FLEX_CC}
COMMAND ${CMAKE_COMMAND}
ARGS -E copy ${FLEX_C} ${FLEX_CC}
DEPENDS ${FLEX_C}
COMMENT "Copying ${FLEX_C} to ${FLEX_CC}"
)
SET(BF_SOURCES ${BISON_CC} ${BISON_H} ${FLEX_CC})
ENDMACRO(GENERATE_BISON_FLEX_SOURCES)
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