[Ltib] Re: add -DZ_PREFIX

[hong zhang]

Stuart,

I failed to build ltib -p pkgconfig.spec on 20071008
release. It complains "cannot run test for cross
compile". Does pkg-config 2.2 contain the patch and do
better job?

---henry

--- Stuart Hughes <address@hidden> wrote:

> Hi Henry, 
> 
> There is information on pkg-config here:
> http://pkg-config.freedesktop.org/wiki/
> but basically when set up right, when a package
> build needs interface
> headers/libraries from another package it can run
> pkg-config queries to
> find out where and what headers/libraries it needs
> to use in it
> compile/link command lines.
> 
> Normally this doesn't work properly when cross
> compiling, but I've added
> a patch in LTIB so that it does (see pkgconfig.spec
> :
> pkg-config-0.21-prefix_mungling.patch).  This in
> conjunction with the
> spoofing system means that pkg-config works without
> having to do
> anything special while building within LTIB.  This
> has been tested when
> I did the original work to get the gstreamer set of
> packages to build
> properly.
> 
> The only caveat is that you'll need a recent LTIB to
> get hold of this,
> it's not yet available in the Savannah CVS copy (but
> I will be merging
> out soon).
> 
> Regards, Stuart
> 
> On Wed, 2007-10-31 at 10:59 -0700, hong zhang wrote:
> > Stuart,
> > 
> > I think Z_PREFIX is not needed any more for
> compiling
> > DirectFB. Trouble is I really not quite understand
> > pkg_conifg for. Do you know where is information
> about
> > it so that I can learn it?
> > 
> > ---henry
> > 
> > --- Stuart Hughes <address@hidden> wrote:
> > 
> > > Hi Henry,
> > > 
> > > Are you using the LTIB from an iso image, if so
> what
> > > version? or are you
> > > using the version from bitshrine/savannah?  The
> > > reason I ask is that I
> > > pending merge out to bitshrine/savannah that
> makes
> > > pkg_config work
> > > properly in a cross compiled environment and
> > > possibly that will help you
> > > (you won't need to specify the pkg_config files
> on
> > > configure line).  If
> > > you have a recent Freescale ISO it will already
> have
> > > these updates.
> > > 
> > > I didn't understand your question about Z_PREFIX
> ?
> > > 
> > > Regards, Stuart
> > > 
> > > On Wed, 2007-10-31 at 09:45 -0700, hong zhang
> wrote:
> > > > Stuart,
> > > > 
> > > > After adding
> > > >
> LIBPNG_CONFIG="$(HOST_DIR)/bin/libpng12-config" \
> > > >  and DirectFB build successfully with
> > > > --with-gfxdrivers=none. But still have error
> > > without
> > > > --with-gfxdrivers=none.
> > > > 
> > > > Why do you think Z_PREFIX will be turned on
> > > default?
> > > > 
> > > > ---henry
> > > > 
> > > > --- Stuart Hughes <address@hidden>
> wrote:
> > > > 
> > > > > Hi Henry,
> > > > > 
> > > > > LTIB will find the headers in rootfs in
> > > preference
> > > > > to the toolchain.
> > > > > 
> > > > > To add this flag, it would probably work by
> > > changing
> > > > > the spec file to:
> > > > > 
> > > > > CFLAGS="-DZ_PREFIX" \
> > > > > ./configure --enable-shared --host=$CFGHOST
> > > > > --build=%{_build} \
> > > > > ....
> > > > > 
> > > > > What does this flag do, and do you know why
> the
> > > > > things it turns on in
> > > > > zconf.h are not enabled by default?
> > > > > 
> > > > > Regards, Stuart
> > > > > 
> > > > > On Tue, 2007-10-30 at 15:27 -0700, hong
> zhang
> > > wrote:
> > > > > > Stuart,
> > > > > > 
> > > > > > I want to add -DZ_PREFIX to turn on inside
> > > > > zconf.h.
> > > > > > Where should I add  -DZ_PREFIX  in
> > > DirectFB.spec?
> > > > > > 
> > > > > > When I upgrade zlib and I found library
> header
> > > > > files
> > > > > > in toolchain is not upgraded and rootfs is
> > > > > upgraded.
> > > > > > 
> > > > > > Thanks.
> > > > > > 
> > > > > > ---henry
> > > > > > 
> > > > > >
> > >
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