UsingTheRightCompiler

[Titus von Boxberg]

clang seems to expect a proper file name extension.
what is .source, anyway?

Regards
Titus


Am 14.11.2011 um 13:36 schrieb Matthew Cottrell:

> Still no luck with the preprocessor problem.  Using clang -E still returns an error:
> 
> :info:build clang -E -IMENUS ARB_GDEmenus.source >ARB_GDEmenus
> :info:build clang: warning: ARB_GDEmenus.source: 'linker' input unused when '-E' is present
> :info:build clang: warning: argument unused during compilation: '-I MENUS'
> 
> 
> 
> On Nov 13, 2011, at 10:37 PM, Joshua Root wrote:
> 
>> You don't appear to actually be using clang in the output you quoted, but rather 'cc', which is linked to llvm-gcc-4.2 on your system. I don't know if clang -E would behave significantly differently, but it's well worth checking.
>> 
>> - Josh
>> 
>> On 2011-11-14 13:19 , Matthew Cottrell wrote:
>>> Using "$(CC) -E" did not succeed because it left an input file unused.
>>> 
>>> :info:build cc -E -IMENUS ARB_GDEmenus.source>ARB_GDEmenus
>>> :info:build i686-apple-darwin11-llvm-gcc-4.2: ARB_GDEmenus.source: linker input file unused because linking not done
>>> 
>>> Would it be too brittle to simply use /usr/bin/cpp?
>>> 
>>> That seems to work just fine:
>>> 
>>> :info:build cpp -IMENUS ARB_GDEmenus.source>ARB_GDEmenu
>>> 
>>> But I don't want to create a situation that will break for some folks.
>>> 
>>> 
>>> On Nov 13, 2011, at 8:57 PM, Ryan Schmidt wrote:
>>> 
>>>> 
>>>> On Nov 13, 2011, at 19:27, Matthew Cottrell wrote:
>>>> 
>>>>> I'm trying to use the right compiler, but ${configure.cpp} is empty on my system.  How do I satisfy a port that needs cpp?
>>>>> 
>>>>> I do have the other stuff
>>>>> 
>>>>> ${configure.cc}=/Developer/usr/bin/clang
>>>>> ${configure.cxx}=/Developer/usr/bin/clang++
>>>> 
>>>> configure.cpp should be populated for most compilers, but MacPorts does not set the CPP environment variable for you; doing so caused problems for more ports than it solved.
>>>> 
>>>> If you have a port that needs CPP set, set it yourself, as in:
>>>> 
>>>> configure.env CPP=${configure.cpp}
>>>> 
>>>> But I do see that configure.cpp is empty when the compiler is clang. Typically, when $(CPP) is empty, software will use "$(CC) -E". So you could try setting it that way.
> 
> --
> Matthew Cottrell
> Lewes, DE 19958
> 
> http://www.mattcottrell.org
> 
> 
> 
> 
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