On Tue, Nov 1, 2011 at 10:43 AM, David Cole <[email protected]> wrote:
> On Tue, Nov 1, 2011 at 11:22 AM, Alexander Neundorf > <[email protected]> wrote: > > On Tuesday 01 November 2011, Robert Dailey wrote: > >> For some reason the built in variable like MSVC_VERSION and MSVC do not > >> have any value unless the project() command is called first. Can someone > >> explain why? > > > > Without checking... > > IIRC, the project() call enables by default the C and the CXX languages > (if > > that hasn't been done before explicitely). > > During enabling the languages the compilers are detected, and with them > those > > variables are set. > > So, before that no languages are known to cmake, so these variables are > not > > set. > > > > Alex > > -- > > > > 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 > > > > Alex is right. > > If you need the value of MSVC *before* calling the project command for > some reason, then you can call enable_language(C) (or CXX) instead... I don't need MSVC checking before project() in my case, they just seemed unrelated so I wanted to check for educational purposes :) Thanks guys.
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