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CMakeModules/MacroOptionalFindPackage.cmake

 

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# - MACRO_OPTIONAL_FIND_PACKAGE() combines FIND_PACKAGE() with an OPTION()

 

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# MACRO_OPTIONAL_FIND_PACKAGE( <name> [QUIT] )

 

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# This macro is a combination of OPTION() and FIND_PACKAGE(), it

 

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# works like FIND_PACKAGE(), but additionally it automatically creates

 

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# an option name WITH_<name>, which can be disabled via the cmake GUI.

 

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# or via -DWITH_<name>=OFF

 

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# The standard <name>_FOUND variables can be used in the same way

 

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# as when using the normal FIND_PACKAGE()

 

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# Copyright (c) 2006-2010 Alexander Neundorf, <neundorf@kde.org>

 

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#

 

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# Redistribution and use is allowed according to the terms of the BSD license.

 

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# For details see the accompanying COPYING-CMAKE-SCRIPTS file.

 

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# This is just a helper macro to set a bunch of variables empty.

 

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# We don't know whether the package uses UPPERCASENAME or CamelCaseName, so we try both:

 

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macro(_MOFP_SET_EMPTY_IF_DEFINED _name _var)

 

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   if(DEFINED ${_name}_${_var})

 

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      set(${_name}_${_var} "")

 

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   endif(DEFINED ${_name}_${_var})

 

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   string(TOUPPER ${_name} _nameUpper)

 

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   if(DEFINED ${_nameUpper}_${_var})

 

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      set(${_nameUpper}_${_var}  "")

 

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   endif(DEFINED ${_nameUpper}_${_var})

 

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endmacro(_MOFP_SET_EMPTY_IF_DEFINED _package _var)

 

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macro (MACRO_OPTIONAL_FIND_PACKAGE _name )

 

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   option(WITH_${_name} "Search for ${_name} package" ON)

 

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   if (WITH_${_name})

 

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      find_package(${_name} ${ARGN})

 

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   else (WITH_${_name})

 

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      string(TOUPPER ${_name} _nameUpper)

 

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      set(${_name}_FOUND FALSE)

 

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      set(${_nameUpper}_FOUND FALSE)

 

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      _mofp_set_empty_if_defined(${_name} INCLUDE_DIRS)

 

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      _mofp_set_empty_if_defined(${_name} INCLUDE_DIR)

 

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      _mofp_set_empty_if_defined(${_name} INCLUDES)

 

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      _mofp_set_empty_if_defined(${_name} LIBRARY)

 

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      _mofp_set_empty_if_defined(${_name} LIBRARIES)

 

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      _mofp_set_empty_if_defined(${_name} LIBS)

 

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      _mofp_set_empty_if_defined(${_name} FLAGS)

 

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      _mofp_set_empty_if_defined(${_name} DEFINITIONS)

 

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   endif (WITH_${_name})

 

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endmacro (MACRO_OPTIONAL_FIND_PACKAGE)

 

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