aria2 @1.18.0: requires C++11 support

[Schamschula (Marius Schamschula)]

While running configure on aria2 1.18.0 under Snow Leopard I get the following error:

:info:configure checking whether /usr/bin/clang++ supports C++11 features by default... no
:info:configure checking whether /usr/bin/clang++ supports C++11 features with -std=c++11 ... no
:info:configure checking whether /usr/bin/clang++ supports C++11 features with -std=c++11 -stdlib=libc++... no
:info:configure checking whether /usr/bin/clang++ supports C++11 features with -std=c++0x ... no
:info:configure checking whether /usr/bin/clang++ supports C++11 features with -std=c++0x -stdlib=libc++... no
:info:configure configure: error: *** A compiler with support for C++11 language features is required.

Need to set compiler dependency to gcc > 4.6.x or clang 3.3?

[cooljeanius (Eric Gallager)]

Need to set compiler dependency to gcc > 4.6.x or clang 3.3?

I think using a compiler.blacklist would be the right thing to do here... not sure what exactly the most efficient way to write it would be though...

[jeremyhu (Jeremy Huddleston Sequoia)]

sigh ...

looking at its dependencies and description, it looks like it's an application (should probably have "installs_libs no") with no C++ dependencies. Thus it might be ok to just "force" libc++ with:

configure.blacklist *gcc*
depends_lib-append port:libcxx
if {[info exists configure.cxx_stdlib]} {
    configure.cxx_stdlib libc++
} else {
    configure.cxxflags-append -stdlib=libc++
}

Note that we'll run into the same revupgrade issue that cal mentioned on macports-dev for textmate.

[Schamschula (Marius Schamschula)]

FYI:

I just successfully (manually) built aria2 1.18.1 using gcc 4.8.2 under Mavericks.

[Schamschula (Marius Schamschula)]

Updated aria2 to version 1.8.10. This is a clean build w/o resorting to gcc.

[Schamschula (Marius Schamschula)]

Also fixed livecheck.

[Ionic (Mihai Moldovan)]

Marius, the update request should have been a separate ticket.

I know that mww is still active, but I'll go ahead and update the port + livecheck to the latest version.

[Ionic (Mihai Moldovan)]

Livecheck (not your version, but one inspired by the sourceforge LivecheckGroup) in r135130.

Update in r135131, because the port was updated at least once to .5 meanwhile and is thus broken on older platforms currently anyway. We can at least update it to the most recent version.

This doesn't affect this ticket in general, though. Leaving it open.

[ryandesign (Ryan Carsten Schmidt)]

In aria2 @1.18.0 the developers changed the configure script to check for and use libc++ automatically if needed. The port builds successfully this way on Lion and later. The problem is on Snow Leopard and earlier, where OS X does not include libc++. On those systems, users need to follow part of the instructions in LibcxxOnOlderSystems: namely, install the libcxx port.

The port behaves somewhat unexpectedly, in that it does not clean up after itself if you deactivate or uninstall it. I've filed #49903 to request it be improved to do this. Once it does, it would be a simple matter to modify the cxx11 portgroup to add a dependency on the libcxx port when needed, and to modify the aria2 port to use that portgroup.

[kencu (Ken)]

In df6be8b52a743362faa44adeca9fd93994f40586/macports-ports:

aria2: switch to cxx11 1.1 PG

fixed build on older systems
closes #40494