60 lines
2.0 KiB
CMake
60 lines
2.0 KiB
CMake
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# - Add options without repeating them on the command line
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#
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# Synopsis:
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#
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# add_options (lang build opts)
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#
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# where:
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#
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# lang Name of the language whose compiler should receive the
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# options, e.g. CXX. If a comma-separated list is received
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# then the option is added for all those languages. Use the
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# special value ALL_LANGUAGES for these languages: CXX, C
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# and Fortran
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#
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# build Kind of build to which this options should apply,
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# such as DEBUG and RELEASE. This can also be a comma-
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# separated list. Use the special value ALL_BUILDS to apply
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# to all builds.
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#
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# opts List of options to add. Each should be quoted.
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#
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# Example:
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#
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# add_options (CXX RELEASE "-O3" "-DNDEBUG" "-Wall")
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function (add_options langs builds)
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# special handling of empty language specification
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if ("${langs}" STREQUAL "ALL_LANGUAGES")
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set (langs CXX C Fortran)
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endif ("${langs}" STREQUAL "ALL_LANGUAGES")
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foreach (lang IN LISTS langs)
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# prepend underscore if necessary
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foreach (build IN LISTS builds)
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if (NOT ("${build}" STREQUAL "ALL_BUILDS"))
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set (_bld "_${build}")
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string (TOUPPER "${_bld}" _bld)
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else (NOT ("${build}" STREQUAL "ALL_BUILDS"))
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set (_bld "")
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endif (NOT ("${build}" STREQUAL "ALL_BUILDS"))
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foreach (_opt IN LISTS ARGN)
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set (_var "CMAKE_${lang}_FLAGS${_bld}")
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#message (STATUS "Adding \"${_opt}\" to \${${_var}}")
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# remove it first
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string (REPLACE "${_opt}" "" _without "${${_var}}")
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string (STRIP "${_without}" _without)
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# if it wasn't there, then add it at the end
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if ("${_without}" STREQUAL "${${_var}}")
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# don't add any extra spaces if no options yet are set
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if (NOT ${${_var}} STREQUAL "")
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set (${_var} "${${_var}} ${_opt}")
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else (NOT ${${_var}} STREQUAL "")
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set (${_var} "${_opt}")
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endif (NOT ${${_var}} STREQUAL "")
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set (${_var} "${${_var}}" PARENT_SCOPE)
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endif ("${_without}" STREQUAL "${${_var}}")
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endforeach (_opt)
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endforeach (build)
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endforeach (lang)
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endfunction (add_options lang build)
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