petsc does not build anymore

[arne.schmitz@…]

There seems to be a bug in the petsc portfile: --with-fortran does not work, can it be changed to --without-fortran? The problem is, openmpi in macports is built without fortran. This changeset broke the build: ​http://trac.macports.org/changeset/49721

[mmoll@…]

petsc works as long as you have built openmpi with Fortran support through one of these variants: g95, gcc42, or gcc43. For scientific computing-related ports such as petsc it does not seem unreasonable to me that a Fortan compiler is installed. However, it is currently impossible to depend on a variant of a port. Adding a dependency on a fortran compiler to the petsc port wouldn't work, since the Fortran support also needs to be built into openmpi.

[arne.schmitz@…]

That's too bad. Because we did not have anything installed, the openmpi was pulled in as a dependency, which in turn failed to build, since it was not of the +g95 flavour. So no chance of specifiying variants in dependencies? Should be fixed IMHO, if this can break the build of a port. Note: We did not have g95 nor gcc42 nor gcc43 installed prior to this.

Regards,

Arne

[mmoll@…]

This is one of the oldest bugs. See ​http://trac.macports.org/wiki/FAQ#IsitpossibletohaveadependencyonaspecificvariantofanotherportE.g.postgresql8server and ​http://trac.macports.org/ticket/126.

Closing this ticket, duplicate of #126.

[jmr@…]

See also #19947.