[Bug other/45915] New: Check for gnu_unique_object in ld.so in gcc/configure.ac is broken for non-glibc ldd

[Bug other/45915] New: Check for gnu_unique_object in ld.so in gcc/configure.ac is broken for non-glibc ldd

[gcc-tgc at jupiterrise dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45915

           Summary: Check for gnu_unique_object in ld.so in
                    gcc/configure.ac is broken for non-glibc ldd
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: gcc-tgc@jupiterrise.com
              Host: i386-pc-solaris2.8


While building gcc-4.6-20101002 with this configure invocation:
./gcc-4.6-20101002/configure --prefix=/usr/tgcware/gcc46 --with-gnu-as
--with-as=/opt/csw/bin/gas --without-gnu-ld --with-ld=/usr/ccs/bin/ld
--disable-nls --enable-shared --enable-languages=c,c++,fortran,ada

Where gas is from binutils 2.20.1 (Blastwave build).

I noticed this output:

checking assembler for gnu_unique_object... yes
expr: syntax error
/export/home/pkgsrc/build/gcc-4.6-20101002/gcc/configure: test: : integer
expression expected

Looking in gcc/configure.ac beginning in line 3840 is the problem.
It runs 'ldd --version' and expects output that can be parsed into an integer.
This fails on Solaris and $glibcmajor is empty when expr tries to do math with
it causing the error above to be printed.

[Bug other/45915] Check for gnu_unique_object in ld.so in gcc/configure.ac is broken for non-glibc ldd

[ro at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45915

Rainer Orth <ro at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
                URL|                            |http://gcc.gnu.org/ml/gcc-p
                   |                            |atches/2011-01/msg00233.htm
                   |                            |l
   Last reconfirmed|                            |2011.01.05 16:44:40
                 CC|                            |ro at gcc dot gnu.org
         AssignedTo|unassigned at gcc dot       |ro at gcc dot gnu.org
                   |gnu.org                     |
   Target Milestone|---                         |4.6.0
     Ever Confirmed|0                           |1

--- Comment #1 from Rainer Orth <ro at gcc dot gnu.org> 2011-01-05 16:44:40 UTC ---
Mine, patch posted.

[Bug other/45915] Check for gnu_unique_object in ld.so in gcc/configure.ac is broken for non-glibc ldd

[ro at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45915

--- Comment #2 from Rainer Orth <ro at gcc dot gnu.org> 2011-01-06 18:29:41 UTC ---
Author: ro
Date: Thu Jan  6 18:29:39 2011
New Revision: 168546

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=168546
Log:
    PR other/45915
    * configure.ac (gcc_cv_as_gnu_unique_object): Only use ldd
    --version output if supported.
    * configure: Regenerate.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/configure
    trunk/gcc/configure.ac

[Bug other/45915] Check for gnu_unique_object in ld.so in gcc/configure.ac is broken for non-glibc ldd

[ro at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45915

Rainer Orth <ro at gcc dot gnu.org> changed:

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

--- Comment #3 from Rainer Orth <ro at gcc dot gnu.org> 2011-01-06 18:32:10 UTC ---
Fixed for 4.6.0.