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From: Richard OGrady <Rich_Ogrady@grayhill.com>
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Subject: Re: [ptxdist] pkg-config-wrapper
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> -----Original Message-----
> From: Michael Olbrich <m.olbrich@pengutronix.de>
> Sent: Friday, October 7, 2022 10:29 AM
> To: Richard OGrady <Rich_Ogrady@grayhill.com>
> Cc: ptxdist@pengutronix.de
> Subject: Re: [ptxdist] pkg-config-wrapper
>=20
> On Fri, Oct 07, 2022 at 02:43:51PM +0000, Richard OGrady wrote:
> > > On Wed, Oct 05, 2022 at 08:44:44PM +0000, Richard OGrady wrote:
> > > > Debugging a prepare stage issue so trying to understand this chunk =
of code in pkg-config-wrapper.
> > > >
> > > > for pkg in ${pkgs}; do
> > > > if [[ ! " ${whitelist} " =3D~ " ${pkg} " && ! "${pkg}" =3D~ '-un=
installed' ]]; then
> > > > echo "$(basename ${0}): warning: blocking '${pkg}': not
> > > > selected by
> > > '${PKGCONFIG_WHITELIST_SRC}'" >&${ERROR_FD}
> > > > exit 1
> > > > fi
> > > > done
> > > >
> > > > Where does ${whitelist} come from? Have tried to trace this back
> > > > and best guess is it may come
> > > from ../state/${PKGCONFIG_WHITELIST_SRC}. pkgconfig .
> > > >
> > > > If this is the case, perhaps pkg-config-wrapper can't be used
> > > > during prepare as the .pkgconfig file isn't there yet?
> > >
> > > ${whitelist} is defined as PKGCONFIG_WHITELIST_HOST or
> > > PKGCONFIG_WHITELIST_TARGET depending on whether the host or cross
> > > pkgconfig is called. For example PKGCONFIG_WHITELIST_HOST is used by =
when the Linux kernel looks for openssl to build a host tool.
> > >
> > > These variables are filled by the .pkgconfig files from all packages
> > > that are selected in the .in file. So those are already available dur=
ing the prepare stage.
> >
> > I think this is where I am having a problem. My file
> > gstreamer2-imx.in
> > select(s) the dependency libimxdmabuffer. My file libimxdmabuffer.in
> > only select(s) the dependency HOST_SYSTEM_PYTHON3 and its pkgconfig
> > file is empty as expected. So the dependency libimxdmabuffer isn't in
> > PKGCONFIG_WHITELIST_TARGET when gstreamer2-imx is prepared and the
> > pkg-config-wrapper blocks it.
> >
> > From your description it seems that primary dependencies (like
> > libimxdmabuffer) are not in PKGCONFIG_WHITELIST_TARGET. Is that the
> > case? I would think this is a common scenario so I must still be
> > missing something.
>=20
> When you build gstreamer2-imx, then libimxdmabuffer should be in PKGCONFI=
G_WHITELIST_TARGET.
> But please note, that PKGCONFIG_WHITELIST_TARGET does not contain the ptx=
dist package names but
> the .pc file names without the .pc suffix.
> And the .pkgconfig of libimxdmabuffer should contain something. Is the fi=
le empty or is it not
> generated at all? What's the output of:
>=20
> find platform-<your-platform>/packages/libimxdmabuffer-<version>/ -name *=
.pc
>=20
> Replace the path with the directory that is filled by libimxdmabuffer.
>=20
> Michael
>=20
That is the problem. The .pc file did not exist. That package is a waf co=
nfigure/build/install. =20
To fix I needed to explicitly add --destdir to the install command. It wor=
ks now.
Thank you.
Rich OGrady