[OE-core] small number of perl modules that can't be cross-compiled

[André Draszik]

On Fri, 2016-11-18 at 06:41 -0500, Robert P. J. Day wrote:
>   after OE recipfying over 100 perl modules from CPAN, i'm down to
> less than a dozen that are going to take more work, and a small number
> of those seem to be simply badly written in that they don't support
> cross-compilation for my target choice of "qemuppc". example
> boilerplate recipe i put together produces this:
> 
> $ make libauthen-pam-perl
> ... snip ...
> Checking if your kit is complete...
> Looks good
> checking for gcc... powerpc-wrs-linux-gcc -m32 -mhard-float -mcpu=7400
> --
> sysroot=/home/rpjday/WRL/builds/msm/nov17/bitbake_build/tmp/sysroots/qemup
> pc
> checking for C compiler default output file name... a.out
> checking whether the C compiler works... configure: error: cannot run
> C compiled programs.
> If you meant to cross compile, use `--host'.
> See `config.log' for more details.

It'd be useful to see config.log, ...

> Error in configuring the Authen::PAM module.
> ... snip ...
> 
>   so i'm assuming the source itself for Authen::PAM:
> 
> https://metacpan.org/pod/Authen::PAM
> 
> is somehow flawed in that it doesn't properly recognize
> cross-compilation, would that be it?

... there is at least one issue in Authen-PAM-0.16/configure.ac, I would
say, in that it tries to detect RTLD_GLOBAL support based on the host's
perl. So it's likely there are more flaws.

A.