octave-control @3.0.0: ld: library not found for -lgfortran

[ATL-Flaneur (Andreas Yankopolus)]

Building octave-control fails with a qt5-qtbase mismatch. The port octave-control is evidently looking for qt59-qtbase while qt5-qtbase is installed.

Running port installed on my system gives the following for qt5-qtbase:

qt5-qtbase @5.10.0_0+openssl (active)

[mf2k (Frank Schima)]

In the future, please Cc the port maintainers (port info --maintainers octave-control), if any.

[ryandesign (Ryan Carsten Schmidt)]

I do not believe that the qt59 error message is relevant. It might be another symptom of the erroneous error message display discussed in #55560.

Rather, the real error seems to be:

:info:configure ld: warning: directory not found for option '-L/opt/local/lib/gcc7/gcc/x86_64-apple-darwin17/7.2.0'
:info:configure ld: warning: directory not found for option '-L/opt/local/lib/gcc7/gcc/x86_64-apple-darwin17/7.2.0/../../..'
:info:configure ld: library not found for -lgfortran
:info:configure clang: error: linker command failed with exit code 1 (use -v to see invocation)

[ATL-Flaneur (Andreas Yankopolus)]

Regarding:

:info:configure ld: warning: directory not found for option '-L/opt/local/lib/gcc7/gcc/x86_64-apple-darwin17/7.2.0'

I have a 7.3.0 directory on my system but not 7.2.0. I created 7.2.0 as a symlink to 7.3.0, and the install went fine.

[Schamschula (Marius Schamschula)]

Sorry not to get back on this any sooner. I was on travel w/o my GitHub passwd.

As octave-control uses the compilers PortGroup and builds against several versions of gcc, I hesitate to bump the revision for each new dot version of gcc.

[Schamschula (Marius Schamschula)]

Well: a rev bump for octave-control was pointless

The problem is octave itself.

[Schamschula (Marius Schamschula)]

In 133a8ed0a0e2f574f80e018874b8bbe06169f095/macports-ports:

octave: revision bump for gcc7 7.3.0

Closes: #55875