On 2017-09-15 09:11 +0300, Niko Tyni wrote:
> On Fri, Sep 15, 2017 at 02:12:28AM +0100, Wookey wrote:
> >
> > It seems to me that if generate_uudmap is to be run when crossing then
> > it needs to be built for the BUILD arch, not the HOST arch. Am I misunderstanding what's going on here?
>
> You're quite correct; this is #872471 fixed in 5.26.0-6 with
>
> https://anonscm.debian.org/cgit/perl/perl.git/commit/?id=665d463005116562dbce0e8c3b886af7ab706dc6
>
> That seems to apply to 5.24 as-is, but let me know if you have trouble
> with that.
Aha. Cheers for that. I should have looked for such a bug.
OK. so that works nicely. Now we get to:
Generating a Unix-style Makefile
Writing Makefile for Errno
make[2]: Entering directory '/tmp/buildd/perl/perl-5.24.1/ext/Errno'
"../../build-miniperl" "-I../../lib" "-I../../lib" Errno_pm.PL Errno.pm
Cannot find errno.h at Errno_pm.PL line 138.
Makefile:430: recipe for target 'Errno.pm' failed
because whilst we have lots of errno.h files:
/usr/include/aarch64-linux-gnu_ilp32/asm/errno.h
/usr/include/aarch64-linux-gnu_ilp32/errno.h
/usr/include/aarch64-linux-gnu_ilp32/sys/errno.h
/usr/include/aarch64-linux-gnu_ilp32/bits/errno.h
/usr/include/x86_64-linux-gnu/asm/errno.h
/usr/include/x86_64-linux-gnu/errno.h
/usr/include/x86_64-linux-gnu/sys/errno.h
/usr/include/x86_64-linux-gnu/bits/errno.h
/usr/include/asm-generic/errno.h
/usr/include/linux/errno.h
Errno_pm.PL is assuming a sysroot, and non multiarch, layout:
my ($linux_errno_h) = grep { -e $_ } map { "$_/errno.h" }
"$sysroot/usr/include", "$sysroot/usr/local/include",
split / / => $Config{locincpth} or
die "Cannot find errno.h"
Amazingly despite hundreds of lines of config options, none is just
'triplet' or 'multiarch path', but 'incpath' seems closest to the right thing.
However using that:
"$Config{incpth}", "$sysroot/usr/local/include",
doesn't work, probably due to multiple paths (my perl foo is very rusty).
setting
"$sysroot/usr/include/aarch64-linux-gnu_ilp32", "$sysroot/usr/local/include",
does work, so this is the issue, but we seem to be in need of a config option for 'multiarch path'
I note that we have a
multiarch='undef'
but perhaps that is for some other purpose?
Again, is this a known issue? Am I on the right track, or confused about what is going on?
What is the right way to get perl/miniperl to find the right headers?
Wookey
--
Principal hats: Linaro, Debian, Wookware, ARM
http://wookware.org/
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