I did forget the ML.
---------- Forwarded message ---------- From: Eric Noulard <[email protected]> Date: 2011/9/9 Subject: Re: [CMake] 64 bit flags To: pellegrini <[email protected]> 2011/9/9 pellegrini <[email protected]>: > Hello everybody, > > I have a Fortran project that is currently built (using gfortran, g95 or > ifort) on 32 bits machines but that might need quite soon to be built on 64 > bit machines as well. > > Does cmake automatically detect the processor architecture and add the 64 > bit flag at configuration time or do I have to declare those flags through, > for example, a '-D option ? CMake chose the default target architecture of your compiler so if the default target ofthe compiler is 64bits no need for special flags. To be more clear: If I compile some code on a 32bits host the compiler (C, Fortran or whatever) usually produce 32bits binaries If I compile some code on a 64 bits host the compiler (C, Fortran or whatever) usually produce 64bits binaries So CMake detect the compiler (C; Fortran, ...) and do not care about 32/64 bits issue. Now if YOUR code as 32/64 bits specific zone then you need an appropriate macro whose definition may be done by you (in CMakeLists.txt) by testing the value of CMAKE_SIZEOF_VOID_P. Now some platform like Mac OS support multi-arch binaries and if you crawl the mail archive you'll find discussion about that. -- Erk Membre de l'April - « promouvoir et défendre le logiciel libre » - http://www.april.org -- Erk Membre de l'April - « promouvoir et défendre le logiciel libre » - http://www.april.org _______________________________________________ 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
