Sender: =?UTF-8?Q?Timo_Ter=C3=A4s?= <timo.teras@gmail.com>
Date: Wed, 1 Feb 2017 09:03:59 +0200
From: Timo Teras <timo.teras@iki.fi>
To: "Tuan M. Hoang" <tmhoang@flatglobe.org>
Cc: "alpine-devel" <alpine-devel@lists.alpinelinux.org>
Subject: Re: [alpine-devel] Porting Alpine scripts
Message-ID: <20170201090359.25e84463@vostro.util.wtbts.net>
In-Reply-To: <20170201014224.3842294c.tmhoang@flatglobe.org>
References: <155a8e57d76.f37920c130996.6728092923369604578@flatglobe.org>
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	<1562340dbde.12a594a5120275.3795912911296475631@flatglobe.org>
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	<20160726194654.69b12731@vostro>
	<15635238f98.e963f442298215.3433654478481171006@flatglobe.org>
	<20161116023639.23b44cf1.tmhoang@flatglobe.org>
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	<20161119041548.765e6513.tmhoang@flatglobe.org>
	<20161119092109.13567a93@vostro>
	<20161121073927.2d0a9e65.tmhoang@flatglobe.org>
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On Wed, 1 Feb 2017 01:42:24 -0500
"Tuan M. Hoang" <tmhoang@flatglobe.org> wrote:

> On Mon, 30 Jan 2017 13:21:56 +0200
> Timo Teras <timo.teras@iki.fi> wrote:
> 
> > > Cross-compiling strace and gdb requires 'linux-headers'
> > > installed in $CBUILDROOT. strace is cool but gdb still fails    
> > 
> > Should fix strace APKBUILD to support cross-compilation using the
> > makedepends_host as used in other cross-compile enabled packages.  
> 
> Thanks, it's very neat.
> 
> > > elf_gregset_t and elf_fpregset_t were supposed to be defined in
> > > https://github.com/torvalds/linux/blob/master/arch/s390/include/asm/elf.h
> > > and I think it should be built in 'linux-headers', but no trace of
> > > them.    
> > 
> > Strange. Sounds like a bug somewhere.  
> 
> Indeed. It was a musl bug, and with some patches, gdb is good now.

Ok. Good, perhaps you can submit them upstream to musl?

> Looks like /usr/lib/libfakeroot.so is the one causes the segfault. Is
> there any option in abuild to build package with out being stripped?
> I would like to do so then debug fakeroot better. Adding -DDEBUG or
> -g in CFLAGS and CXXFLAGS in APKBUILD doesn't help.

DEBUG=yes abuild

or 

add "$pkgname-dbg" to subpackages, and a separate -dbg package is
created with the debug information.

> > > Here is the log of strace fakeroot :
> > > http://pastebin.com/Pn7YUWRz    
> > 
> > Could you retry with "strace -f -s 1024" ?
> 
> I am not sure the strace would be informative for you : 
> http://pastebin.com/4P0f5sDF

Unfortunately, this does not immediately reveal anything additional.
Getting gdb backtrace should help.

Thanks,
Timo


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