[Bug bootstrap/56182] New: [4.6 Regression] gcc/config/i386/t-linux64:29: recipe commences before first target

[Bug bootstrap/56182] New: [4.6 Regression] gcc/config/i386/t-linux64:29: recipe commences before first target

[wbrana at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56182

             Bug #: 56182
           Summary: [4.6 Regression] gcc/config/i386/t-linux64:29: recipe
                    commences before first target
    Classification: Unclassified
           Product: gcc
           Version: 4.6.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: wbrana@gmail.com


Branch 4.6 fails to build. There is probably backslash missing in file
gcc/config/i386/t-linux64.

make[3]: Entering directory
`/mnt/md3/cache/portage/sys-devel/gcc-4.6.4_pre9999/work/build/gcc'
/mnt/md3/cache/portage/sys-devel/gcc-4.6.4_pre9999/work/gcc-4.6.4-9999/gcc/config/i386/t-linux64:29:
*** recipe commences before first target.  Stop.
make[3]: Leaving directory
`/mnt/md3/cache/portage/sys-devel/gcc-4.6.4_pre9999/work/build/gcc'
make[2]: *** [all-stage1-gcc] Error 2
make[2]: Leaving directory
`/mnt/md3/cache/portage/sys-devel/gcc-4.6.4_pre9999/work/build'
make[1]: *** [stage1-bubble] Error 2
make[1]: Leaving directory
`/mnt/md3/cache/portage/sys-devel/gcc-4.6.4_pre9999/work/build'
make: *** [bootstrap-lean] Error 2

branch 4.7 was built successfully on same machine

configure --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.6.4-pre9999
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.6.4-pre9999/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.6.4-pre9999
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.6.4-pre9999/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.6.4-pre9999/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.6.4-pre9999/include/g++-v4
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-altivec
--disable-fixed-point --without-ppl --without-cloog --enable-lto --disable-nls
--with-system-zlib --enable-obsolete --disable-werror --enable-secureplt
--enable-multilib --disable-libmudflap --disable-libssp --disable-libgomp
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/4.6.4-pre9999/python
--enable-checking=release --disable-libgcj --disable-libquadmath
--enable-languages=c --enable-shared --enable-threads=posix
--enable-__cxa_atexit --enable-clocale=gnu --enable-targets=all

[Bug bootstrap/56182] [4.6 Regression] gcc/config/i386/t-linux64:29: recipe commences before first target

[wbrana at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56182

--- Comment #1 from wbrana <wbrana at gmail dot com> 2013-02-02 12:31:45 UTC ---
Created attachment 29335
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29335
build log

[Bug bootstrap/56182] [4.6 Regression] gcc/config/i386/t-linux64:29: recipe commences before first target

[wbrana at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56182

--- Comment #2 from wbrana <wbrana at gmail dot com> 2013-02-02 12:33:30 UTC ---
Created attachment 29336
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29336
gcc/config/i386/t-linux64

[Bug bootstrap/56182] [4.6 Regression] gcc/config/i386/t-linux64:29: recipe commences before first target

[wbrana at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56182

wbrana <wbrana at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |build
               Host|                            |x86_64-pc-linux-gnu
              Build|                            |x86_64-pc-linux-gnu
           Severity|normal                      |blocker

[Bug bootstrap/56182] [4.6 Regression] gcc/config/i386/t-linux64:29: recipe commences before first target

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56182

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |x86_64-pc-linux-gnu
           Priority|P3                          |P1
      Known to work|                            |4.6.3
   Target Milestone|---                         |4.6.4
      Known to fail|                            |4.6.4

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> 2013-02-04 10:00:24 UTC ---
Matthias - did you properly test your patches on the branches (I seriously
think they were not appropriate there).

P1.

[Bug bootstrap/56182] [4.6 Regression] gcc/config/i386/t-linux64:29: recipe commences before first target

[doko at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56182

Matthias Klose <doko at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |vapier at gentoo dot org

--- Comment #4 from Matthias Klose <doko at gcc dot gnu.org> 2013-02-04 18:28:59 UTC ---
back from travelling. yes, I did check that before checking in, builds from the
branch, and builds as a package.

$ md5sum gcc/config/i386/t-linux64
7d88364e4013e7259e8e856b0d778c24  gcc/config/i386/t-linux64

this shows me that line 39 ends with a backslash.

this doesn't seem to be a build from the fsf branch, but a gentoo build:

>>> Unpacked to /mnt/md3/cache/portage/sys-devel/gcc-4.6.4_pre9999/work/gcc-4.6.4-9999
 ^[[32;01m*^[[0m updating multilib directories to be: ../lib64 ../lib32
 ^[[32;01m*^[[0m Running elibtoolize in: gcc-4.6.4-9999/
 ^[[32;01m*^[[0m   Applying portage/2.2 patch ...
 ^[[32;01m*^[[0m   Applying sed/1.5.6 patch ...
 ^[[32;01m*^[[0m   Applying as-needed/2.2.6 patch ...

and "updating multilib directories" looks suspicious.

[Bug bootstrap/56182] [4.6 Regression] gcc/config/i386/t-linux64:29: recipe commences before first target

[wbrana at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56182

wbrana <wbrana at gmail dot com> changed:

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

--- Comment #5 from wbrana <wbrana at gmail dot com> 2013-02-04 18:50:24 UTC ---
It seems Gentoo build is modifying t-linux64.
Change in GCC broke Gentoo build.

[Bug bootstrap/56182] [4.6 Regression] gcc/config/i386/t-linux64:29: recipe commences before first target

[vapier at gentoo dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56182

--- Comment #6 from Mike Frysinger <vapier at gentoo dot org> 2013-02-05 05:37:08 UTC ---
(In reply to comment #4)

yes, the Gentoo build has to undo all the magic checks that gcc adds in a naïve
attempt to find the right multilib which makes it too fragile to be useful

seems adding yet another magic check broke the sed i use in Gentoo so i have to
update it to strip out the additional cruft