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1 # - Check if the Linker supports a specific flag and if yes add it.
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2 # CFUNGE_CHECK_LINKER_FLAG(_target _name _flag)
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3 #
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4 # _target - Target to add to.
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5 # _name - Name to use for cache variable.
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6 # _flag - Flag to check for
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7 #
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8 # The same variables as for CheckCSourceCompiles affect this macro.
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9 # Exception: SAFE_CMAKE_REQUIRED_FLAGS is overridden.
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10 #
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11 # Will set CFUNGE_CHECKLINKERFLAG_$<name> (as CheckCCompilerFlag out variable).
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12 # Will use MACRO_ADD_LINK_FLAGS() to add the <flag> if supported.
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13 #
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14
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15 # cfunge - A standard-conforming Befunge93/98/109 interpreter in C.
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16 # Copyright (C) 2008 Arvid Norlander <anmaster AT tele2 DOT se>
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17 #
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18 # This program is free software: you can redistribute it and/or modify
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19 # it under the terms of the GNU General Public License as published by
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20 # the Free Software Foundation, either version 3 of the License, or
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21 # (at the proxy's option) any later version. Arvid Norlander is a
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22 # proxy who can decide which future versions of the GNU General Public
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23 # License can be used.
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24 #
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25 # This program is distributed in the hope that it will be useful,
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26 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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27 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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28 # GNU General Public License for more details.
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29 #
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30 # You should have received a copy of the GNU General Public License
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31 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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32
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33 include(CheckCSourceCompiles)
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34 include(MacroAddLinkFlags)
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35
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36 macro(CFUNGE_CHECK_LINKER_FLAG _target _name _flag)
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37 SET(SAFE_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
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38 SET(CMAKE_REQUIRED_FLAGS "${_flag}")
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39 CHECK_C_SOURCE_COMPILES("int main() { return 0;}" CFUNGE_CHECKLINKERFLAG_${_name})
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40 if (CFUNGE_CHECKLINKERFLAG_${_name})
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41 MACRO_ADD_LINK_FLAGS(${_target} ${_flag})
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42 endif (CFUNGE_CHECKLINKERFLAG_${_name})
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43 SET(CMAKE_REQUIRED_FLAGS "${SAFE_CMAKE_REQUIRED_FLAGS}")
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44 endmacro(CFUNGE_CHECK_LINKER_FLAG)
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