From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: Problem with natively-built armhf bootstrap compiler
Date: Wed, 07 Jan 2015 14:15:52 +0100
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In-Reply-To: <87mw5zyakn.fsf@netris.org> (Mark H. Weaver's message of "Sat, 03
	Jan 2015 13:37:44 -0500")
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To: Mark H Weaver <mhw@netris.org>
Cc: guix-devel@gnu.org

Mark H Weaver <mhw@netris.org> skribis:

>> diff --git a/gnu/packages/gcc.scm b/gnu/packages/gcc.scm
>> index a7156bf..dd33a26 100644
>> --- a/gnu/packages/gcc.scm
>> +++ b/gnu/packages/gcc.scm
>> @@ -213,7 +213,7 @@ where the OS part is overloaded to denote a specific=
 ABI---into GCC
>>                     ;; below, make sure to update the relevant code in
>>                     ;; %gcc-static package as needed.
>>                     (format #f "#define GNU_USER_TARGET_LIB_SPEC \
>> -\"-L~a/lib %{!static:-rpath=3D~a/lib %{!static-libgcc:-rpath=3D~a/lib64=
 -rpath=3D~a/lib -lgcc_s}} \" ~a"
>> +\"-L~a/lib %{!static:-rpath=3D~a/lib %{!static-libgcc:-rpath=3D~a/lib64=
 -rpath=3D~a/lib %{pthread: -lgcc_s}}} \" ~a"
>>                             libc libc libdir libdir suffix))
>>                    (("#define GNU_USER_TARGET_STARTFILE_SPEC.*$" line)
>>                     (format #f "#define STANDARD_STARTFILE_PREFIX_1 \"~a=
/lib\"
>>
>> I believe this is enough to address what the comment mentions (glibc
>> dlopening libgcc_s for pthread functions), but this will need testing.

I see you applied this patch.  However, after grepping through libc, I
found there are other cases where libgcc_s is dlopened, including to
walk the stack, which has nothing to do with pthread.

So I think the status quo is safer.

WDYT?

Ludo=E2=80=99, who hopes gnu.org will be back soon.