www/aria2 dependencies & lang/llvm33 build error

[Tijl Coosemans]

On Sun, 17 Nov 2013 22:01:45 +1100 andrew clarke wrote:
> Following up on my question from yesterday...
> 
> On Sun 2013-11-17 00:22:13 UTC+1100, andrew clarke (mail at ozzmosis.com) wrote:
> 
> > I'm running FreeBSD 8.4-RELEASE-p4.
> > 
> > www/aria2 1.18.1 requires lang/clang33. Is this really necessary?
> > Previous aria2 versions didn't require clang.
> 
> I've now had a chance to check the aria2 sources and evidently it now
> requires C++11 support, which I find surprising, but that's progress I
> suppose...
> 
> > If so, I already have lang/clang-devel (3.4) installed, but the port
> > still wants to build lang/clang33, which of course requires
> > devel/llvm33.
> 
> I've just noticed for lang/clang-devel, the actual clang binary has
> been recently renamed to clang-devel, but this isn't mentioned in
> /usr/ports/UPDATING.
> 
> If I set CXX=clang++-devel in make.conf, the aria2 configure script
> still fails though, complaining of missing C++11 support. Odd.
> 
> > However on 8.4-REL, currently llvm33 fails to build:
> > 
> > gmake[1]: Leaving directory `/usr/ports/devel/llvm33/work/llvm-3.3.src/bindings'
> > llvm[0]: ***** Completed Release Build
> > sphinx-build -b man -d _build/doctrees   . _build/man
> > Traceback (most recent call last):
> >   File "/usr/local/bin/sphinx-build", line 5, in <module>
> >     from pkg_resources import load_entry_point
> >   File "build/bdist.freebsd-8.3-RELEASE-p3-amd64/egg/pkg_resources.py", line 2805, in <module>
> >   File "build/bdist.freebsd-8.3-RELEASE-p3-amd64/egg/pkg_resources.py", line 696, in require
> >   File "build/bdist.freebsd-8.3-RELEASE-p3-amd64/egg/pkg_resources.py", line 594, in resolve
> > pkg_resources.DistributionNotFound: markupsafe
> > gmake: *** [man] Error 1
> > *** Error code 2
> 
> On a hunch I tried reinstalling textproc/py-sphinx, which failed with
> the same error. Evidently py-sphinx is missing a dependency on
> textproc/py-MarkupSafe. Once markupsafe is installed I could build &
> install llvm33 & clang33.
> 
> But even so, the aria2 build still complains about missing C++11 support:
> 
> checking whether /usr/local/bin/clang++33 supports C++11 features by default... no
> checking whether /usr/local/bin/clang++33 supports C++11 features with -std=c++11 ... no
> checking whether /usr/local/bin/clang++33 supports C++11 features with -std=c++11 -stdlib=libc++... no
> checking whether /usr/local/bin/clang++33 supports C++11 features with -std=c++0x ... no
> checking whether /usr/local/bin/clang++33 supports C++11 features with -std=c++0x -stdlib=libc++... no
> configure: error: *** A compiler with support for C++11 language features is required.
> ===>  Script "configure" failed unexpectedly.
> 
> Any suggestions?

Probably the port needs a C++11 library and not just a C++11 compiler.
On FreeBSD 8 only the lang/gcc ports provide a C++11 library, so you
could try the following.

In the port Makefile there's a line like this:

USES=		compiler:c++11-lang pathfix pkgconfig

Try changing "compiler:c++11-lang" into "compiler:c++11-lib".