pkgconfig dependency question

[Orion Poplawski]

After skimming some of the thread about .pc files in -devel or not, it 
seems like .pc files should be generating automatic dependencies.  Is 
that not correct?

I package plplot, and plplot-devel contains:

# cat /usr/lib/pkgconfig/plplotd.pc
prefix=/usr
exec_prefix=/usr
libdir=/usr/lib
includedir=/usr/include/plplot
drvdir=${libdir}/plplot5.6.1/driversd

Name: PLplot
Description: Scientific plotting library (double precision)
Requires:
Version: 5.6.1
Libs: -L${libdir} -lplplotd  -L/usr/lib -lqhull -L/usr/lib -lcsironn 
-ldl -lm -L/usr/lib -lcsirocsa -lz -L/usr/lib -lfreetype
Cflags: -I${includedir}


But there are no dependencies on qhull-devel (via libqhull.so) and so 
forth.  Should there be?


-- 
Orion Poplawski
System Administrator                  303-415-9701 x222
NWRA/CoRA Division                    FAX: [phone]
3380 Mitchell Lane                  orion(a)cora.nwra.com
Boulder, CO 80301              http://www.cora.nwra.com

[Rex Dieter]

Orion Poplawski wrote:
>  After skimming some of the thread about .pc files in -devel or not,
> it 
>  seems like .pc files should be generating automatic dependencies.  Is 
>  that not correct? 
Nope, only newer versions (than what Fedora currently has) of rpm 
includes the feature to automatically add
Requires:
dependencies extracted from .pc files (see Requires: line below, which 
happens to be empty).

>  I package plplot, and plplot-devel contains:
>  
>  # cat /usr/lib/pkgconfig/plplotd.pc
>  prefix=/usr
>  exec_prefix=/usr
>  libdir=/usr/lib
>  includedir=/usr/include/plplot
>  drvdir=${libdir}/plplot5.6.1/driversd
>  
>  Name: PLplot
>  Description: Scientific plotting library (double precision)
>  Requires:
>  Version: 5.6.1
>  Libs: -L${libdir} -lplplotd  -L/usr/lib -lqhull -L/usr/lib -lcsironn 
>  -ldl -lm -L/usr/lib -lcsirocsa -lz -L/usr/lib -lfreetype
>  Cflags: -I${includedir}
>  
>  
>  But there are no dependencies on qhull-devel (via libqhull.so) and so 
>  forth.  Should there be? 
Kinda sorta.  2 solutions:
1.  (imo, preferred), strip all/most non-plplot libs from the Libs: 
line.  Those are only ever really needed for static linking (and Fedora 
doesn't include those, by default)
2.  Add to plplot-devel Requires for the pkgs that include the libs 
referenced in Libs:

-- rex

[Ville Skyttä]

On Fri, 2006-09-08 at 10:44 -0600, Orion Poplawski wrote:
>  After skimming some of the thread about .pc files in -devel or not,
> it 
>  seems like .pc files should be generating automatic dependencies.  Is 
>  that not correct? 
As far as I know, that's implemented only in newer versions of rpm than
what's shipped in FC.  Ditto *.la, FWIW.

[Parag Nemade]

Hi,
On 9/10/06, Ville Skyttä <ville.skytta(a)iki.fi&gt; wrote:
>  On Fri, 2006-09-08 at 10:44 -0600, Orion Poplawski wrote:
>  > After skimming some of the thread about .pc files in -devel or not, it
>  > seems like .pc files should be generating automatic dependencies.  Is
>  > that not correct?
>
>  As far as I know, that's implemented only in newer versions of rpm than
>  what's shipped in FC.  Ditto *.la, FWIW. 
 Could you elaborate more on this? I mean you said newer rpm versions
but what is that version name? and which FC(FC5?) ?

Regards,
Parag.

[Jesse Keating]

On Tuesday 12 September 2006 01:15, Parag N(पराग़) wrote:
>   Could you elaborate more on this? I mean you said newer rpm
> versions
>  but what is that version name? and which FC(FC5?) ? 
He's referencing the rpm work done by Jeff Johnson that is not included in any 
Fedora Core release or development tree.

-- 
Jesse Keating
Release Engineer: Fedora

[Parag Nemade]

Hi,
On 9/12/06, Jesse Keating <jkeating(a)redhat.com&gt; wrote:
>  On Tuesday 12 September 2006 01:15, Parag N(पराग़) wrote:
>  > Could you elaborate more on this? I mean you said newer rpm versions
>  > but what is that version name? and which FC(FC5?) ?
>
>  He's referencing the rpm work done by Jeff Johnson that is not included in any
>  Fedora Core release or development tree. 
But when i saw .pc files on FC6T2, i found that Requires tag there. So
that mean that rpm workdone is included in FC6T2 right?

Regards,
Parag.

[Rex Dieter]

Parag N(पराग़) wrote:
>  Hi,
>  On 9/12/06, Jesse Keating <jkeating(a)redhat.com&gt; wrote:
> > On Tuesday 12 September 2006 01:15, Parag N(पराग़) wrote:
> > > Could you elaborate more on this? I mean you said newer rpm versions
> > > but what is that version name? and which FC(FC5?) ?
> >
> > He's referencing the rpm work done by Jeff Johnson that is not 
> > included in any
> > Fedora Core release or development tree.
>  
>  But when i saw .pc files on FC6T2, i found that Requires tag there. So
>  that mean that rpm workdone is included in FC6T2 right? 
That Requires was added *by hand*, not automatically by rpm.

-- Rex

[Jesse Keating]

On Tuesday 12 September 2006 01:49, Parag N(पराग़) wrote:
>  But when i saw .pc files on FC6T2, i found that Requires tag there.
> So
>  that mean that rpm workdone is included in FC6T2 right? 
Within a .pc file, there are some Requires listed at times.  This is generated 
during the build or upstream at the project site.  The rpm work will find the 
Requires listed there and implant that into the rpm itself.  Currently the 
Fedora (and RHEL) rpms will not do this automatic implant and the maintainer 
manually has to read the .pc file and add the Requires: line to the package 
which contains the .pc file (should be the -devel package).

-- 
Jesse Keating
Release Engineer: Fedora