[Bug bootstrap/45954] New: --with-build-config=bootstrap-lto doesn't work

[Bug bootstrap/45954] New: --with-build-config=bootstrap-lto doesn't work

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45954

           Summary: --with-build-config=bootstrap-lto doesn't work
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: hjl.tools@gmail.com


--with-build-config=bootstrap-lto doesn't work. The problem is

cd bld; \
        RUNTESTFLAGS="--target_board 'unix{-m32,}'" ../src-trunk/configure \
                --enable-clocale=gnu --with-system-zlib --enable-shared
--with-demangler-in-ld --with-build-config=bootstrap-lto
-with-plugin-ld=ld.gold --enable-gold --with-fpmath=sse
....

It doesn't enable LTO for stage1 gcc and it goes downhill after
stage 1 since LTO isn't available at all:

configure:3000:  /export/gnu/import/svn/gcc-test/bld/./prev-gcc/xgcc
-B/export/gnu/import/svn/gcc-test/bld/./prev-gcc/
-B/usr/local/x86_64-unknown-linux-gnu/bin/
-B/usr/local/x86_64-unknown-linux-gnu/bin/
-B/usr/local/x86_64-unknown-linux-gnu/lib/ -isystem
/usr/local/x86_64-unknown-linux-gnu/include -isystem
/usr/local/x86_64-unknown-linux-gnu/sys-include    -g -O2
-fwhopr=jobserver -fuse-linker-plugin -frandom-seed=1    conftest.c
>&5
cc1: error: LTO support has not been enabled in this configuration

[Bug bootstrap/45954] --with-build-config=bootstrap-lto doesn't work

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45954

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> 2010-10-10 07:05:54 UTC ---
--with-build-config=bootstrap-lto requires --enable-stage1-languages=c,lto.
Why isn't lto added to stage1?

[Bug bootstrap/45954] --with-build-config=bootstrap-lto doesn't work

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45954

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> 2010-10-10 07:05:54 UTC ---
--with-build-config=bootstrap-lto requires --enable-stage1-languages=c,lto.
Why isn't lto added to stage1?

[Bug bootstrap/45954] --with-build-config=bootstrap-lto doesn't work

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45954

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-10-10 10:37:24 UTC ---
The build-config stuff doesn't look like it could handle that, or can it
simply add lto to STAGE1_LANGUAGES?

[Bug bootstrap/45954] --with-build-config=bootstrap-lto doesn't work

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45954

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> 2010-10-10 10:59:30 UTC ---
If LTO is enabled, I think lto should be added
to STAGE1_LANGUAGES.  Otherwise, stage1 cc1
can't be used for LTO. Sometimes it is easier
to debug stage1 cc1.

[Bug bootstrap/45954] LTO isn't enabled in stage1 cc1 with --with-build-config=bootstrap-lto

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45954

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|--with-build-config=bootstr |LTO isn't enabled in stage1
                   |ap-lto doesn't work         |cc1 with
                   |                            |--with-build-config=bootstr
                   |                            |ap-lto

--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> 2010-10-10 11:10:13 UTC ---
LTO isn't enabled in stage1 cc1. When --with-build-config=bootstrap-lto
is used, LTO has to be enabled by hand with --enable-stage1-languages=c,lto.

[Bug bootstrap/45954] LTO isn't enabled in stage1 cc1 with --with-build-config=bootstrap-lto

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45954

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |howarth at nitro dot
                   |                            |med.uc.edu

--- Comment #5 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-10-15 13:40:39 UTC ---
*** Bug 46035 has been marked as a duplicate of this bug. ***

[Bug bootstrap/45954] LTO isn't enabled in stage1 cc1 with --with-build-config=bootstrap-lto

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45954

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|                            |http://gcc.gnu.org/ml/gcc-p
                   |                            |atches/2010-10/msg01455.htm
                   |                            |l

--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> 2010-10-17 22:08:29 UTC ---
A patch is posted at

http://gcc.gnu.org/ml/gcc-patches/2010-10/msg01455.html

[Bug bootstrap/45954] LTO isn't enabled in stage1 cc1 with --with-build-config=bootstrap-lto

[hjl at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45954

--- Comment #7 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> 2010-10-20 12:38:33 UTC ---
Author: hjl
Date: Wed Oct 20 12:38:22 2010
New Revision: 165721

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=165721
Log:
Add LTO to boot language if it is enabled.

2010-10-20  H.J. Lu  <hongjiu.lu@intel.com>

    PR bootstrap/45954
    * config-lang.in (boot_language): Set to $enable_lto.

Modified:
    trunk/gcc/lto/ChangeLog
    trunk/gcc/lto/config-lang.in

[Bug bootstrap/45954] LTO isn't enabled in stage1 cc1 with --with-build-config=bootstrap-lto

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45954

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.6.0

--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> 2010-10-20 12:40:11 UTC ---
Fixed.