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

[David Cole]

"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.
>>
>
>