On Mon, 10 Nov 2014, Cristian Ionescu-Idbohrn wrote:
>
> I wish I had... Oh well, at least we now know what the problem is and
> how to work around it. People with better knowledge of pkg-config
> might have some idea. /usr/lib/x86_64-linux-gnu/pkgconfig/libgit2.pc
> looks like this on my box:
>
> ,----
> | libdir=/usr/lib/x86_64-linux-gnu
> | includedir=/usr/include
> |
> | Name: libgit2
> | Description: The git library, take 2
> | Version: 0.21.2
> | Requires.private: openssl zlib libssh2
> | Libs.private: -lhttp_parser -lrt
> | Libs: -L${libdir} -lgit2
> | Cflags: -I${includedir}
> `----
>
> What does that file show on other distributions?
The problem is debian packaging. There's already a bug filed for
that, as I mentioned in an earlier post. See
https://bugs.debian.org/768482.
Dug a bit deeper into this. libgit2.pc seems to follow with the
upstream code. The "Requires.private" directive should reflect the
manner the library was built.
$ pkg-config --print-requires-private libgit2
provides a dependency list:
openssl
zlib
if libgit2 was built without libssh2 support, and:
openssl
zlib
libssh2
otherwise.
subsurface-configure.pri (arguably) could pick up that list and
validate each one, with:
$ pkg-config --exists <lib>
If libssh2-dev is missing:
$ pkg-config --exists libssh2
will fail, and (alternatively):
$ pkg-config --print-errors --exists libssh2
Package libssh2 was not found in the pkg-config search path.
Perhaps you should add the directory containing `libssh2.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libssh2' found
will reveal the obvious reason.
Does that sound like an idea worth considering?
That check shouldn't be needed, but until debian bug #768482 is sorted
out it will help many debian (and derivatives) users. The extra code
added to subsurface-configure.pri would not have any significant
impact on qmake performance.
Cheers,
--
Cristian
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