[Insight-developers] /usr/lib/ccache does not detect warning flags

[Bill Lorensen]

I don't have a window.

Clear one of your cache entries for a wraning that worked before and you'll
see that it does not work now.


On Wed, Aug 31, 2011 at 1:24 PM, David Cole <david.cole at kitware.com> wrote:

> "Something has changed recently." --
>
> so wait, this used to work, and now it doesn't ... ?
>
> What day was it that it stopped working?
>
> (Or give me a window that I can look at...)
>
> Was it the merge of the "automatic warning detection" topic that
> happened on Friday?
>
> I thought the problem showed up before last Friday....
>
>
> On Wed, Aug 31, 2011 at 1:23 PM, Bill Lorensen <bill.lorensen at gmail.com>
> wrote:
> > Dave,
> >
> > I just cleared my c++ cache and the warnings fail there also. I think the
> > logic in ITKSetStandardCompilerFlags.cmake  is flawed.
> >
> > For example, when it tests -Wall the error says:
> > Source file was:
> > -Wall
> >
> > Something has changed recently.
> >
> >
> > On Wed, Aug 31, 2011 at 12:53 PM, Bill Lorensen <bill.lorensen at gmail.com
> >
> > wrote:
> >>
> >> Double maybe.
> >>
> >> If I create a src.cxx file on my tmp directory, ccache runs just fine.
> >>
> >>
> >> On Wed, Aug 31, 2011 at 12:33 PM, David Cole <david.cole at kitware.com>
> >> wrote:
> >>>
> >>> On Wed, Aug 31, 2011 at 12:29 PM, Bill Lorensen <
> bill.lorensen at gmail.com>
> >>> wrote:
> >>> > Dave,
> >>> >
> >>> > /usr/lib/ccache/c++ does not detect the warnings flags that c++ does.
> >>> >
> >>> > I looked at the CMakeError.log file and here is a typical entry:
> >>> > Building CXX object CMakeFiles/cmTryCompileExec.dir/src.cxx.o
> >>> > /usr/lib/ccache/c++    -g -O0  -fprofile-arcs -ftest-coverage
> >>> > -DCXX_HAS_WARNING-Wcast-align   -o
> >>> > CMakeFiles/cmTryCompileExec.dir/src.cxx.o
> >>> > -c
> >>> >
> >>> >
> /home/lorensen/ProjectsGIT/ITKGerritCoverage-linux/CMakeFiles/CMakeTmp/src.cxx
> >>> > <command-line>: warning: missing whitespace after the macro name
> >>> >
> >>> >
> /home/lorensen/ProjectsGIT/ITKGerritCoverage-linux/CMakeFiles/CMakeTmp/src.cxx:1:
> >>> > error: expected unqualified-id before ‘-’ token
> >>> >
> >>> > NOTE: warning: missing whitespace after the macro name appears for
> both
> >>> > c==
> >>> > and cccahce so it is not an issue.
> >>> >
> >>> > Bill
> >>> >
> >>> >
> >>>
> >>>
> >>> Is this in reference to why the warnings are not showing up on some
> >>> SimpleITK dashboards?
> >>>
> >>> Perhaps ccache is not even compiling the files that we think it should
> >>> be... Maybe it's got results cached somewhere, and doesn't need to run
> >>> the compile, and therefore.... doesn't have any warnings.
> >>
> >
> >
>
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