Re: libgit2, libgit2-glib: pkg-config file: dependencies on other libraries: how to represent them in Guix?

[Ludovic Courtès]

Danny Milosavljevic <address@hidden> skribis:

> On Sat, 18 Jun 2016 09:47:19 +0200
> Ricardo Wurmus <address@hidden> wrote:
>
>> This depends on the pkg-config file that the library installs.  If this
>> file contains a section that lists other libraries as private, then
>> propagation is probably the correct approach.
>
> See <https://github.com/libgit2/libgit2/blob/master/libgit2.pc.in>
>
> Name: libgit2
> Description: The git library, take 2
> Version: @LIBGIT2_VERSION_STRING@
>
> Libs: -L"${libdir}" -lgit2
> Libs.private: @LIBGIT2_PC_LIBS@
> Requires.private: @LIBGIT2_PC_REQUIRES@
>
> Cflags: -I${includedir}
>
> And in the CMakeLists.txt :
>
>       IF (CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
>               LIST(APPEND LIBGIT2_PC_LIBS "-lssl")
>       ELSE()
>               SET(LIBGIT2_PC_REQUIRES "${LIBGIT2_PC_REQUIRES} openssl")
>       ENDIF ()
>
> So I take it that it should have been a propagated-input in libgit2 itself 
> already, right?

Yes.  OTOH, “Requires.private” is used only when static linking; are we
using static linking here?  If not, we could leave it as is.

Thanks,
Ludo’.