[Bug go/55201] New: [4.8 regression] libgo.so: undefined reference to `__atomic_compare_exchange_8'

[Bug go/55201] New: [4.8 regression] libgo.so: undefined reference to `__atomic_compare_exchange_8'

[schwab@linux-m68k.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55201

             Bug #: 55201
           Summary: [4.8 regression]  libgo.so: undefined reference to
                    `__atomic_compare_exchange_8'
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: go
        AssignedTo: ian@airs.com
        ReportedBy: schwab@linux-m68k.org


libgo needs to be linked against -latomic.

[Bug go/55201] [4.8 regression] libgo.so: undefined reference to `__atomic_compare_exchange_8'

[schwab@linux-m68k.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55201

--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> 2012-11-04 12:46:19 UTC ---
Created attachment 28611
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28611
Preliminary patch

Doesn't yet work with -static-libgo

[Bug go/55201] [4.8 regression] libgo.so: undefined reference to `__atomic_compare_exchange_8'

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55201

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org
   Target Milestone|---                         |4.8.0

[Bug go/55201] [4.8 regression] libgo.so: undefined reference to `__atomic_compare_exchange_8'

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55201

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P4

[Bug go/55201] [4.8 regression] libgo.so: undefined reference to `__atomic_compare_exchange_8'

[ian at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55201

--- Comment #2 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> 2012-12-18 14:28:31 UTC ---
Author: ian
Date: Tue Dec 18 14:28:24 2012
New Revision: 194581

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=194581
Log:
libgo: Link against libatomic.

./:
    PR go/55201
    * Makefile.def (all-target-libgo): Depend on all-target-libatomic.
    * Makefile.in: Regenerate.
gcc/go:
    PR go/55201
    * gospec.c (LIBATOMIC): Define.
    (LIBATOMIC_PROFILE): Define.
    (lang_specific_driver): Add LIBATOMIC[_PROFILE] option.
gcc/testsuite:
    * lib/go.exp (go_link_flags): Add libatomic location to flags and
    ld_library_path.

Modified:
    trunk/ChangeLog
    trunk/Makefile.def
    trunk/Makefile.in
    trunk/gcc/go/ChangeLog
    trunk/gcc/go/gospec.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/lib/go.exp
    trunk/libgo/Makefile.am
    trunk/libgo/Makefile.in

[Bug go/55201] [4.8 regression] libgo.so: undefined reference to `__atomic_compare_exchange_8'

[schwab@linux-m68k.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55201

Andreas Schwab <schwab@linux-m68k.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED

--- Comment #3 from Andreas Schwab <schwab@linux-m68k.org> 2012-12-18 14:45:00 UTC ---
Fixed.

[Bug go/55201] [4.8 regression] libgo.so: undefined reference to `__atomic_compare_exchange_8'

[ian at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55201

--- Comment #4 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> 2012-12-18 22:04:13 UTC ---
Author: ian
Date: Tue Dec 18 22:04:08 2012
New Revision: 194592

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=194592
Log:
    PR go/55201
    * Makefile.am (noinst_LTLIBRARIES): Define new make variable.
    (libatomic_convenience_la_SOURCES): Likewise.
    (libatomic_convenience_la_LIBADD): Likewise.
    * Makefile.in: Rebuild.
    * testsuite/Makefile.in: Rebuild.

Modified:
    trunk/libatomic/ChangeLog
    trunk/libatomic/Makefile.am
    trunk/libatomic/Makefile.in
    trunk/libatomic/testsuite/Makefile.in

[Bug go/55201] [4.8 regression] libgo.so: undefined reference to `__atomic_compare_exchange_8'

[ian at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55201

--- Comment #5 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> 2012-12-18 22:07:43 UTC ---
Author: ian
Date: Tue Dec 18 22:07:38 2012
New Revision: 194593

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=194593
Log:
libgo: Link against libatomic_convenience.la.

gcc/go:
    PR go/55201
    * gospec.c: Revert last patch.

gcc/testsuite:
    PR go/55201
    * lib/go.exp: Revert last patch.

Modified:
    trunk/gcc/go/ChangeLog
    trunk/gcc/go/gospec.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/lib/go.exp
    trunk/libgo/Makefile.am
    trunk/libgo/Makefile.in