Re: cmake giving options the compiler does not understand

[Jeff Morriss <jeff.morriss.ws () gmail com>]

On 01/02/14 17:05, Peter Wu wrote:
> Hi,
>
> On Thursday 02 January 2014 16:02:08 Jeff Morriss wrote:
> > It took me a while to get my cmake build going again today; one of the
> > reasons was that the builds would immediately fail with:
> >
> >   > cc: error: unrecognized command line option -Wshorten-64-to-32
> >
> > As far as I can tell the problem is simply that check_c_compiler_flag()
> > isn't working in my version of cmake (2.8.11): it always returns 1.  Or
> > does it not work for others?
>
> I sometimes have this issue too, but it got "fixed" by clearing the build
> directory (`rm -rf build`) and then configuring the tree again with cmake.

Oh, weird.  I blew away my build directory several times today (for 
other reasons) and it never solved this problem.  But I tried just now 
and it did...  Weird!

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