Re: Trying to cross compile glib-2.18.2 for ARM

[Chuck Kuecker <ckuecker ckent org>]

Robert Pearce wrote:
> Hi Chuck,
>
> On Mon, 19 Apr 2010 09:54:16 -0600 you wrote:
>   
> > > > checking for posix getpwuid_r... (cached) yes
> > > > checking for posix getgrgid_r... configure: error: in
> > > > `/opt/Freescale1/ltib/rpm/BUILD/glib-2.18.2':
> > > > configure: error: cannot run test program while cross
> > > > compiling
> > > > See `config.log' for more details.
> > > > error: Bad exit status from
> > > > /opt/Freescale1/ltib/tmp/rpm-tmp.29960 (%
> > > > build)
> > > >         
>
> <snip>
>   
> > What, exactly, are the 'test programs' that the glib make tries to run? 
> > There must have been a way to disable this in the older version of glib 
> > (glib-2.12.11) packaged with the Freescale ltib build, since that build 
> > does not have this issue. Was this an added feature of newer glib releases?
> >     
>
> It's not "glib make", it's the configure script. In order to confirm
> whether glib can use a POSIX compliant getgrgid_r the configure script
> has to build and run a test program to check for compliance. For most
> things it's enough to compile the test, but for some compliance checks
> the program must actually be run on the target system. That's rather
> hard for configure to do when cross-compiling.
>
> It may be possible to explicitly tell configure whether the test would
> pass (or rather, to explicitly tell it whether to use the function) but
> it may not. The fact that older versions didn't suffer this problem
> could be down to older versions not needing that function, or it may be
> the availability was incorrectly assumed rather than tested.
>
> And that's about as much as I know on the topic!
>
>
> Rob
>
>   
Thanks, Rob. That makes sense - it can't run an ARM binary on a x86
platform.

I can test on the target system to see if it supports the POSIX function
- if so, I can modify the configuration script to skip the test.

While I was poking around here, I found an alternate solution to my
problem that does not require an updated glib. My gst-plugins-good
package was the wrong version - I used a newer release, and I've got my
functionality now.

Thanks to everyone!

Chuck Kuecker