Your message dated Sat, 1 Mar 2014 20:23:40 +0100
with message-id <20140301192340.gg28...@mraw.org>
and subject line Re: Bug#698007: mklibs: Fix undefined reference to
__dso_handle problem encountered with librt.so
has caused the Debian Bug report #698007,
regarding mklibs: Fix undefined reference to __dso_handle problem encountered
with librt.so
to be marked as done.
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If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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698007: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=698007
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--- Begin Message ---
Package: mklibs
Tags: patch
----- Forwarded message from Joe Seymour <jseym...@codesourcery.com> -----
Date: Sat, 12 Jan 2013 13:13:56 +0000
From: Joe Seymour <jseym...@codesourcery.com>
To: debian-boot@lists.debian.org
Subject: [PATCH] Fix undefined reference to __dso_handle problem encountered
with librt.so
X-Mailing-List: <debian-boot@lists.debian.org> archive/latest/170862
X-CRM114-Status: Good ( pR: 18.8078 )
[Please CC me on any responses]
When using mklibs on a simple test application I encountered the following error
when mklibs attempts to build a reduced librt.so:
/usr/lib64/libpthread_nonshared.a(pthread_atfork.oS): relocation R_X86_64_PC32
against undefined hidden symbol `__dso_handle' can not be used when making a
shared object
ld: final link failed: Bad value
Examining the link map for librt.so, when built by EGLIBC, I see the
__dso_handle definition used by it comes from crtbeginS.o, which isn't included
in the link because mklibs passes -nostartfiles.
In order to create a reduced librt.so that as closely as possible resembles the
original, it makes sense to include crtbeginS.o when dealing with librt.so.1.
This patch does that. crtendS.o is included as a requisite of crtbeginS.o.
Joe
diff --git a/src/mklibs b/src/mklibs
index 14ca02a..0b62136 100755
--- a/src/mklibs
+++ b/src/mklibs
@@ -617,6 +617,17 @@ while 1:
extra_post_obj.append(sysroot + libc_extras_dir + "/sofini.o")
symbols.add(ProvidedSymbol('__dso_handle', None, None, True))
+ if soname in ("librt.so.1"):
+ crtbegin = command(target + "gcc",
+ " ".join(gcc_options),
+ "-print-file-name=crtbeginS.o");
+ crtend = command(target + "gcc",
+ " ".join(gcc_options),
+ "-print-file-name=crtendS.o");
+ extra_pre_obj.append(" ".join(crtbegin))
+ extra_post_obj.append(" ".join(crtend))
+ symbols.add(ProvidedSymbol('__dso_handle', None, None, True))
+
map_file = find_pic_map(library)
if map_file:
extra_flags.append("-Wl,--version-script=" + map_file)
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--- Begin Message ---
Cyril Brulebois <k...@debian.org> (2014-03-01):
> If you're still having any issues with it, it would be nice to describe
> a complete test case.
jseym...@codesourcery.com
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So closing…
Mraw,
KiBi.
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