# - Find gperf executable and provides a macro to generate custom build rules # # The module defines the following variables: # GPERF_FOUND - true is gperf executable is found # GPERF_EXECUTABLE - the path to the gperf executable # GPERF_VERSION - the version of gperf # GPERF_LIBRARIES - The gperf libraries # # The minimum required version of gperf can be specified using the # standard syntax, e.g. FIND_PACKAGE(GPERF 2.5.13) # # # If gperf is found on the system, the module provides the macro: # GPERF_TARGET(Name GperfInput GperfOutput [COMPILE_FLAGS ]) # which creates a custom command to generate the file from # the file. If COMPILE_FLAGS option is specified, the next # parameter is added to the gperf command line. Name is an alias used to # get details of this custom command. Indeed the macro defines the # following variables: # GPERF_${Name}_DEFINED - true is the macro ran successfully # GPERF_${Name}_OUTPUTS - the source file generated by the custom rule, an # alias for GperfOutput # GPERF_${Name}_INPUT - the gperf source file, an alias for ${GperfInput} # # Gperf scanners oftenly use tokens defined by Bison: the code generated # by Gperf depends of the header generated by Bison. This module also # defines a macro: # ADD_GPERF_BISON_DEPENDENCY(GperfTarget BisonTarget) # which adds the required dependency between a scanner and a parser # where and are the first parameters of # respectively GPERF_TARGET and BISON_TARGET macros. # # ==================================================================== # Example: # # find_package(GPERF) # # GPERF_TARGET(MyHash hash.gperf ${CMAKE_CURRENT_BINARY_DIR}/hash.c) # # ==================================================================== #============================================================================= # Copyright 2009 Kitware, Inc. # Copyright 2006 Tristan Carel # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # # * Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # # * Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # # * Neither the names of Kitware, Inc., the Insight Software Consortium, # nor the names of their contributors may be used to endorse or promote # products derived from this software without specific prior written # permission. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT # HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. FIND_PROGRAM(GPERF_EXECUTABLE gperf DOC "path to the gperf executable") MARK_AS_ADVANCED(GPERF_EXECUTABLE) FIND_LIBRARY(FL_LIBRARY NAMES fl DOC "path to the fl library") MARK_AS_ADVANCED(FL_LIBRARY) SET(GPERF_LIBRARIES ${FL_LIBRARY}) IF(GPERF_EXECUTABLE) EXECUTE_PROCESS(COMMAND ${GPERF_EXECUTABLE} --version OUTPUT_VARIABLE GPERF_version_output ERROR_VARIABLE GPERF_version_error RESULT_VARIABLE GPERF_version_result OUTPUT_STRIP_TRAILING_WHITESPACE) SET(ENV{LC_ALL} ${_Bison_SAVED_LC_ALL}) IF(NOT ${GPERF_version_result} EQUAL 0) MESSAGE(SEND_ERROR "Command \"${GPERF_EXECUTABLE} --version\" failed with output:\n${GPERF_version_error}") ELSE() STRING(REGEX REPLACE "^GNU gperf ([^\n]+)\n.*" "\\1" GPERF_VERSION "${GPERF_version_output}") ENDIF() #============================================================ # GPERF_TARGET (public macro) #============================================================ # MACRO(GPERF_TARGET Name Input Output) SET(GPERF_TARGET_usage "GPERF_TARGET( [COMPILE_FLAGS ]") IF(${ARGC} GREATER 3) IF(${ARGC} EQUAL 5) IF("${ARGV3}" STREQUAL "COMPILE_FLAGS") SET(GPERF_EXECUTABLE_opts "${ARGV4}") SEPARATE_ARGUMENTS(GPERF_EXECUTABLE_opts) ELSE() MESSAGE(SEND_ERROR ${GPERF_TARGET_usage}) ENDIF() ELSE() MESSAGE(SEND_ERROR ${GPERF_TARGET_usage}) ENDIF() ENDIF() ADD_CUSTOM_COMMAND(OUTPUT ${Output} COMMAND ${GPERF_EXECUTABLE} ARGS ${GPERF_EXECUTABLE_opts} < ${Input} > ${Output} DEPENDS ${Input} COMMENT "[GPERF][${Name}] Building hash with gperf ${GPERF_VERSION}" WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}) SET(GPERF_${Name}_DEFINED TRUE) SET(GPERF_${Name}_OUTPUTS ${Output}) SET(GPERF_${Name}_INPUT ${Input}) SET(GPERF_${Name}_COMPILE_FLAGS ${GPERF_EXECUTABLE_opts}) ENDMACRO(GPERF_TARGET) #============================================================ #============================================================ # ADD_GPERF_BISON_DEPENDENCY (public macro) #============================================================ # MACRO(ADD_GPERF_BISON_DEPENDENCY GperfTarget BisonTarget) IF(NOT GPERF_${GperfTarget}_OUTPUTS) MESSAGE(SEND_ERROR "Gperf target `${GperfTarget}' does not exists.") ENDIF() IF(NOT BISON_${BisonTarget}_OUTPUT_HEADER) MESSAGE(SEND_ERROR "Bison target `${BisonTarget}' does not exists.") ENDIF() SET_SOURCE_FILES_PROPERTIES(${GPERF_${GperfTarget}_OUTPUTS} PROPERTIES OBJECT_DEPENDS ${BISON_${BisonTarget}_OUTPUT_HEADER}) ENDMACRO(ADD_GPERF_BISON_DEPENDENCY) #============================================================ ENDIF(GPERF_EXECUTABLE) INCLUDE(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake) FIND_PACKAGE_HANDLE_STANDARD_ARGS(GPERF REQUIRED_VARS GPERF_EXECUTABLE VERSION_VAR GPERF_VERSION) # FindGPERF.cmake ends here