[CMake] How to detect 32/64 architecture

[Andreas Schneider]

Luigi Calori wrote:
> Is there a macro or variable to detect 32/64 architecture under Linux
> (possibly also under windows)
> In order to mimic pre-existent builds we have been asked to install on
> lib64 if on a 64 architecture and lib or luib32 if appropriate
> 

Hi Luigi,

I check the void pointer size.

if (UNIX AND NOT WIN32)
  if (CMAKE_SIZEOF_VOID_P MATCHES "8")
    ow_check_cxx_compiler_flag("-fPIC" WITH_FPIC)
      if (WITH_FPIC)
        add_definitions(-fPIC)
    endif (WITH_FPIC)
  endif (CMAKE_SIZEOF_VOID_P MATCHES "8")
endif (UNIX AND NOT WIN32)


> Thanks a lot

:)

	-- andreas

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-- 
http://www.cynapses.org/ - cybernetic synapses


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