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Bug#680292: marked as done (gnatmake: linker arguments order incompatible with --as-needed)

Your message dated Wed, 08 May 2013 10:18:53 +0000
with message-id <E1Ua1SX-0006Zv-K6@franck.debian.org>
and subject line Bug#680292: fixed in gcc-4.6 4.6.4-2
has caused the Debian Bug report #680292,
regarding gnatmake: linker arguments order incompatible with --as-needed
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
680292: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=680292
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: gnat-4.6
Version: 4.6.3-4
Severity: minor

Hello. Gnatmake calls gcc -shared in a way incompatible with
--as-needed. Gprbuild uses a better ordering.

-- bug.ads
package Bug is
end Bug;
-- bug.gpr
project Bug is
  for Library_Name use "bug";
  for Library_Version use "libbug.so.1";
  for Library_Kind use "dynamic";
  for Library_Dir use "lib";
  for Library_Options use ("-lncurses");
end Bug;
$ mkdir lib
$ gnatmake -v -Pbug
...
/usr//bin/gcc-4.6 -shared ... -lncurses ... -lgnat-4.6 -Wl,-soname,libbug.so.1 /tmp/bug/bug.o
...
$ gnatclean -Pbug
...
$ gprbuild -v -Pbug
...
/usr/bin/gcc-4.6 -shared ... -lgnat-4.6 ... -Wl,-soname,libbug.so.1 /tmp/bug/bug.o -lncurses
...

When adding -Wl,--as-needed before -lncurses in Library_Options (or
using GNU gold linker with default options), symbols from -lgnat-4.6
are ignored because they are not used by any object *yet*. In this
minimal example, this is not a problem, but any useful library will
use symbols from -lgnat-4.6.

As a more real-life example, read dpkg_shlibdeps warnings when building
libtexttools-2.1.0-1 with

LDFLAGS += -Wl,--as-needed # or remove the lines stripping it
BUILDER_OPTIONS += -v

-- System Information:
ii  gcc-4.6            4.6.3-1

--- End Message ---
--- Begin Message --- 
Source: gcc-4.6
Source-Version: 4.6.4-2

We believe that the bug you reported is fixed in the latest version of
gcc-4.6, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 680292@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Matthias Klose <doko@debian.org> (supplier of updated gcc-4.6 package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@debian.org)


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Format: 1.8
Date: Wed, 08 May 2013 09:37:40 +0200
Source: gcc-4.6
Binary: gcc-4.6-base gcc-4.6 gcc-4.6-multilib gcc-4.6-plugin-dev gcc-4.6-hppa64 gcc-4.6-spu g++-4.6-spu gfortran-4.6-spu cpp-4.6 gcc-4.6-locales g++-4.6 g++-4.6-multilib libmudflap0-4.6-dev gobjc++-4.6 gobjc++-4.6-multilib gobjc-4.6 gobjc-4.6-multilib libobjc3 libobjc3-dbg lib64objc3 lib64objc3-dbg lib32objc3 lib32objc3-dbg libn32objc3 libn32objc3-dbg gfortran-4.6 gfortran-4.6-multilib libstdc++6-4.6-dev libstdc++6-4.6-pic libstdc++6-4.6-dbg lib32stdc++6-4.6-dbg lib64stdc++6-4.6-dbg libn32stdc++6-4.6-dbg libstdc++6-4.6-doc gcc-4.6-soft-float gcc-4.6-source
Architecture: source all amd64
Version: 4.6.4-2
Distribution: unstable
Urgency: low
Maintainer: Debian GCC Maintainers <debian-gcc@lists.debian.org>
Changed-By: Matthias Klose <doko@debian.org>
Description: 
 cpp-4.6    - GNU C preprocessor
 g++-4.6    - GNU C++ compiler
 g++-4.6-multilib - GNU C++ compiler (multilib files)
 g++-4.6-spu - SPU cross-compiler (C++ compiler)
 gcc-4.6    - GNU C compiler
 gcc-4.6-base - GCC, the GNU Compiler Collection (base package)
 gcc-4.6-hppa64 - GNU C compiler (cross compiler for hppa64)
 gcc-4.6-locales - GCC, the GNU compiler collection (native language support files)
 gcc-4.6-multilib - GNU C compiler (multilib files)
 gcc-4.6-plugin-dev - Files for GNU GCC plugin development.
 gcc-4.6-soft-float - GCC soft-floating-point gcc libraries (ARM)
 gcc-4.6-source - Source of the GNU Compiler Collection
 gcc-4.6-spu - SPU cross-compiler (preprocessor and C compiler)
 gfortran-4.6 - GNU Fortran compiler
 gfortran-4.6-multilib - GNU Fortran compiler (multilib files)
 gfortran-4.6-spu - SPU cross-compiler (Fortran compiler)
 gobjc++-4.6 - GNU Objective-C++ compiler
 gobjc++-4.6-multilib - GNU Objective-C++ compiler (multilib files)
 gobjc-4.6  - GNU Objective-C compiler
 gobjc-4.6-multilib - GNU Objective-C compiler (multilib files)
 lib32objc3 - Runtime library for GNU Objective-C applications (32bit)
 lib32objc3-dbg - Runtime library for GNU Objective-C applications (32 bit debug sy
 lib32stdc++6-4.6-dbg - GNU Standard C++ Library v3 (debugging files)
 lib64objc3 - Runtime library for GNU Objective-C applications (64bit)
 lib64objc3-dbg - Runtime library for GNU Objective-C applications (64 bit debug sy
 lib64stdc++6-4.6-dbg - GNU Standard C++ Library v3 (debugging files)
 libmudflap0-4.6-dev - GCC mudflap support libraries (development files)
 libn32objc3 - Runtime library for GNU Objective-C applications (n32)
 libn32objc3-dbg - Runtime library for GNU Objective-C applications (n32 debug symbo
 libn32stdc++6-4.6-dbg - GNU Standard C++ Library v3 (debugging files)
 libobjc3   - Runtime library for GNU Objective-C applications
 libobjc3-dbg - Runtime library for GNU Objective-C applications (debug symbols)
 libstdc++6-4.6-dbg - GNU Standard C++ Library v3 (debugging files)
 libstdc++6-4.6-dev - GNU Standard C++ Library v3 (development files)
 libstdc++6-4.6-doc - GNU Standard C++ Library v3 (documentation files)
 libstdc++6-4.6-pic - GNU Standard C++ Library v3 (shared library subset kit)
Closes: 680292
Changes: 
 gcc-4.6 (4.6.4-2) unstable; urgency=low
 .
   * Refresh ada-sjlj.diff.
   * In gnatlink, pass the options and libraries after objects to the
     linker to avoid link failures with --as-needed. Closes: #680292.
   * Fix gdc build on architectures not providing libphobos.
   * Allow java class file format version 1.7 (backport from 4.7).
   * Tighten build dependency on libmpc-dev to ensure using libmpc3.
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--- End Message ---
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