library not found for -lgfortran

[Mark Brethen]

On Jul 9, 2014, at 10:26 PM, Sean Farley <sean at macports.org> wrote:

> 
> Ryan Schmidt writes:
> 
>> On Jul 9, 2014, at 7:42 PM, Mark Brethen wrote:
>> 
>>> On Jul 8, 2014, at 7:46 PM, Sean Farley wrote:
>>> 
>>>> Try setting 'configure.ld ${configure.fc}' in the pre-configure stage
>>>> and see if that works. It might not but is worth a shot.
>>> 
>>> exec gfortran-mp-4.8 --print-file-name libgfortran.dylib
>>> /opt/local/lib/gcc48/gcc/x86_64-apple-darwin13/4.8.2/../../../libgfortran.dylib
>>> 
>>> Then, would this be an acceptable workaround?
>>> 
>>> pre-configure {
>>> libgfortran = [exec gfortran-mp-4.8 --print-file-name libgfortran.a]
>>> configure.ldflags-append "-L${file dirname libgfortran} -lgfortran"
>>> }
>> 
>> The correct Tcl syntax would be:
>> 
>> pre-configure {
>>    set libgfortran [exec ${configure.fc} --print-file-name libgfortran.a]
>>    configure.ldflags-append "-L[file dirname ${libgfortran}]"
>> }
>> 
>> I removed "-lgfortran", assuming the build system already does that. If it does not, then it would be simpler to just pass the complete path to the library, rather than passing a -L flag to its directory and a -l path to its name.
> 
> This would still miss other libraries the compiler needs. While it might
> work in this case, there is no way it is general enough to work.

So why is the cmake module (from the cmake port) failing to detect the path? 

Mark