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List:       cmake
Subject:    Re: [CMake] Can't Remove CXX_FLAGS entry
From:       Yngve Inntjore Levinsen <yngve.levinsen () gmail ! com>
Date:       2013-10-30 9:45:45
Message-ID: 5270D549.5070709 () gmail ! com
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Hi,

Have a look at the very silly hello world example attached. As I think
you mentioned, the cmake way to do this is to have targets with specific
flags in separate folders. In the example I add the 'fopenmp' as an
example flag (doesn't do anything useful, it is just to exemplify), and
remove it in target two using string replacement.

Hope this helps.

Cheers,
Yngve

Den 29. okt. 2013 21:51, skrev Stewart, Robert:
> I wrote:
> > When I generate NMake files for a project, to build on
> > Windows, CMAKE_CXX_FLAGS_DEBUG includes /RTC1.  That's fine
> > for most of the libraries in the build tree, but one uses
> > /CLR and that conflicts with /RTC1.  Is there a way to update
> > the compiler flags for a particular target?
> > 
> > A search reveals that the out-of-tree build directory,
> > corresponding to the target's list file directory (foo.dir),
> > contains a flags.make with a CXX_FLAGS variable that contains
> > /RTC1 and /CLR.  I'd like to remove /RTC1 from that so the
> > build will work.
> > 
> > Obviously, I could change the cached CMAKE_CXX_FLAGS_DEBUG
> > contents using SET() with FORCE, but that affects the other
> > targets, so I'd have to add /RTC1 back for each of them.  It
> > would be much more appropriate to just subtract the flag
> > where not wanted.
> > 
> > I tried STRING(REPLACE) for CMAKE_CXX_FLAGS_DEBUG and
> > CXX_FLAGS, but they don't work.  I tried using
> > GET_PROPERTY()/SET_PROPERTY() to extract, update, and write
> > COMPILE_FLAGS for both DIRECTORY and TARGET, thinking that
> > COMPILE_FLAGS might be the property equivalent of CXX_FLAGS.
> > Nothing I've tried works.
> > 
> > Any ideas?
> Anyone?
> 
> _____
> Rob Stewart
> Software Engineer
> Dev Tools & Components
> Susquehanna International Group, LLP
> 
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