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

[Bradley Lowekamp]

Good thought with our lack of simpleITK warnings.

It should be easy enough to adjust the compilers for tomorrows build.



On Aug 31, 2011, at 1:24 PM, David Cole 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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========================================================
Bradley Lowekamp  
Lockheed Martin Contractor for
Office of High Performance Computing and Communications
National Library of Medicine 
blowekamp at mail.nih.gov


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