find_program doesn't detect the difference between 64 and 32 bit executable, so I need to augment the search paths to avoid looking in 64 bit locations on a 32 bit system.
James On Mon, Oct 26, 2009 at 6:55 PM, David Cole <[email protected]> wrote: > On Win64, in a 32-bit calling environment, there are two environment > variables with values like this: > PROCESSOR_ARCHITECTURE=x86 > PROCESSOR_ARCHITEW6432=AMD64 > > In a pure 64-bit calling environment, there is just: > PROCESSOR_ARCHITECTURE=AMD64 > (and no value for PROCESSOR_ARCHITEW6432) > > ...so: you could do something like this (although it may not be 100% > foolproof...): > if("$ENV{PROCESSOR_ARCHITEW6432}" STREQUAL "") > if("$ENV{PROCESSOR_ARCHITECTURE}" STREQUAL "x86") > # "pure" 32-bit environment... > else() > # "pure" 64-bit environment... > endif() > else() > if("$ENV{PROCESSOR_ARCHITECTURE}" STREQUAL "x86") > # 32-bit program running with an underlying 64-bit environment > available... > else() > # theoretically impossible case... > endif() > endif() > > Of course, it would be better to not have conditionals based on the > environment... Why do you need to do this? > > > HTH, > David > > > On Mon, Oct 26, 2009 at 6:46 PM, James Bigler <[email protected]>wrote: > >> All the WIN32 flags say they are valid for WIN64 machines. Is there no >> equivalent WIN64 flag to determine if the OS is 32 or 64 bit regardless of >> the bitness of the build? >> >> Thanks, >> James >> >> _______________________________________________ >> Powered by www.kitware.com >> >> Visit other Kitware open-source projects at >> http://www.kitware.com/opensource/opensource.html >> >> Please keep messages on-topic and check the CMake FAQ at: >> http://www.cmake.org/Wiki/CMake_FAQ >> >> Follow this link to subscribe/unsubscribe: >> http://www.cmake.org/mailman/listinfo/cmake >> > >
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