library not found for -lgfortran

[Sean Farley]

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.