Wireshark-dev: Re: [Wireshark-dev] cmake giving options the compiler does not understand
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From: Jeff Morriss <jeff.morriss.ws@xxxxxxxxx>
Date: Thu, 02 Jan 2014 17:50:54 -0500
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!