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81 lines
3.1 KiB
CMake
81 lines
3.1 KiB
CMake
# Copyright (C) 2009 Sun Microsystems, Inc
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; version 2 of the License.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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IF(CMAKE_SYSTEM_NAME MATCHES "SunOS")
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# On Solaris, /opt/csw often contains a newer bison
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IF(NOT BISON_EXECUTABLE AND EXISTS /opt/csw/bin/bison)
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SET(BISON_EXECUTABLE /opt/csw/bin/bison)
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ENDIF()
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ENDIF()
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FIND_PROGRAM(BISON_EXECUTABLE bison DOC "path to the bison executable")
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MARK_AS_ADVANCED(BISON_EXECUTABLE "")
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IF(NOT BISON_EXECUTABLE)
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MESSAGE("Warning: Bison executable not found in PATH")
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ELSEIF(BISON_EXECUTABLE AND NOT BISON_USABLE)
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# Check version as well
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EXEC_PROGRAM(${BISON_EXECUTABLE} ARGS --version OUTPUT_VARIABLE BISON_VERSION_STR)
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# Get first line in case it's multiline
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STRING(REGEX REPLACE "([^\n]+).*" "\\1" FIRST_LINE "${BISON_VERSION_STR}")
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# get version information
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STRING(REGEX REPLACE ".* ([0-9]+)\\.([0-9]+)" "\\1" BISON_VERSION_MAJOR "${FIRST_LINE}")
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STRING(REGEX REPLACE ".* ([0-9]+)\\.([0-9]+)" "\\2" BISON_VERSION_MINOR "${FIRST_LINE}")
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IF (BISON_VERSION_MAJOR LESS 2)
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MESSAGE("Warning: bison version is old. please update to version 2")
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ELSE()
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SET(BISON_USABLE 1 CACHE INTERNAL "Bison version 2 or higher")
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ENDIF()
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ENDIF()
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# Use bison to generate C++ and header file
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MACRO (RUN_BISON input_yy output_cc output_h)
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IF(BISON_TOO_OLD)
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IF(EXISTS ${output_cc} AND EXISTS ${output_h})
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SET(BISON_USABLE FALSE)
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ENDIF()
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ENDIF()
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IF(BISON_USABLE)
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ADD_CUSTOM_COMMAND(
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OUTPUT ${output_cc}
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${output_h}
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COMMAND ${BISON_EXECUTABLE} -y -p MYSQL
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--output=${output_cc}
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--defines=${output_h}
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${input_yy}
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DEPENDS ${input_yy}
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)
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ELSE()
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# Bison is missing or not usable, e.g too old
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IF(EXISTS ${output_cc} AND EXISTS ${output_h})
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IF(${input_yy} IS_NEWER_THAN ${output_cc} OR ${input_yy} IS_NEWER_THAN ${output_h})
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# Possibly timestamps are messed up in source distribution.
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MESSAGE("Warning: no usable bison found, ${input_yy} will not be rebuilt.")
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ENDIF()
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ELSE()
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# Output files are missing, bail out.
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SET(ERRMSG
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"Bison (GNU parser generator) is required to build MySQL."
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"Please install bison."
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)
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IF(WIN32)
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SET(ERRMSG ${ERRMSG}
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"You can download bison from http://gnuwin32.sourceforge.net/packages/bison.htm "
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"Choose 'Complete package, except sources' installation. We recommend to "
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"install bison into a directory without spaces, e.g C:\\GnuWin32.")
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ENDIF()
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MESSAGE(FATAL_ERROR ${ERRMSG})
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ENDIF()
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ENDIF()
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ENDMACRO()
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