[CMake] The C compiler "/usr/bin/cc" is not able to compile a simple test program.

[jupiter]

Thanks Micha and Nils.

Cheers.



On Sun, Jul 30, 2017 at 6:54 PM, Micha Hergarden <micha.hergarden at gmail.com>
wrote:

> On 30-07-17 04:36, jupiter wrote:
>
> I thought if I add -DCMAKE_CC_COMPILER=gcc that error should go, no, it
> still compile with the specific default cc:
>
> /usr/bin/cc ....
>
> How could I fix it?
>
> Thank you.
>
> On Sun, Jul 30, 2017 at 11:51 AM, jupiter <jupiter.hce at gmail.com> wrote:
>
>> Hi,
>>
>> How can I set up the cmake not to check /usr/bin/cc but to check $CC
>> (which link to gcc without hard corded path in the environment)?
>>
>> Thank you.
>>
>> Regards
>>
>>
>>
>
>
> Hello Jupiter,
>
> Running the following sets the compiler to gcov:
>
> CC=/usr/bin/gcov cmake ../
>
> This outputs:
>
> -- The C compiler identification is unknown
> -- The CXX compiler identification is GNU 7.1.1
> -- Check for working C compiler: /usr/bin/gcov
> -- Check for working C compiler: /usr/bin/gcov -- works
> -- Detecting C compiler ABI info
> -- Detecting C compiler ABI info - failed
> -- Check for working CXX compiler: /usr/bin/c++
> -- Check for working CXX compiler: /usr/bin/c++ -- works
> -- Detecting CXX compiler ABI info
> -- Detecting CXX compiler ABI info - done
> -- Detecting CXX compile features
> -- Detecting CXX compile features - done
> -- Configuring done
> -- Generating done
>
>
> As you can see cmake definitely uses the CC environment variable. What is
> your OS? What do you set $CC to? What is the full commandline you use to
> call cmake?
> What happens if you set it the way I did?
>
> Regards,
> Micha
>
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