Re: libc++ vs. libstdc++ usage in the ports tree

On Sun, Dec 1, 2013 at 3:06 PM, Tijl Coosemans <tijl_at_freebsd.org> wrote:
> On Wed, 27 Nov 2013 20:45:56 +0100 Tijl Coosemans wrote:
>> On Wed, 27 Nov 2013 19:31:44 +0100 Jan Henrik Sylvester wrote:
>>> Trying to migrate to 10, I would like to keep octave. Have you found
>>> anything new? Having build the port and all dependencies with standard
>>> options, octave is segfaulting for me, too. Anyhow, I can run octave with:
>>>
>>> env LD_PRELOAD=/usr/lib/libc++.so.1 octave
>>>
>>> Some very light testing indicates that it is working. Of course, this is
>>> not ideal.
>>>
>>> Maybe this gives a clue how to fix the octave port properly.
>>
>> I have a preliminary patch for math/octave that I wanted to test on
>> redports first, but it is down at the moment so here it is.
>
> The tests were successful:
> https://redports.org/buildarchive/20131201105316-94935/ (octave)
> https://redports.org/buildarchive/20131201115701-22333/ (octave-forge-base)
> The octave logs also contain the results of running the regression-test
> target.  The output is the same on all FreeBSD versions.
>
> The problem is that USE_FORTRAN=yes implies USE_GCC=yes.  This means
> the C++ code in math/octave is compiled with gcc46/libstdc++ which
> does not work if dependencies have been built with clang/libc++.
>
> The patch copies the USE_FORTRAN=yes logic from Mk/bsd.gcc.mk into a
> new file Mk/Uses/fortran.mk.  It allows ports to use a Fortran compiler
> together with the base system C/C++ compiler.

This is nice!

Cheers,

Antoine