[Bug bootstrap/34555] New: configure: error: `CXX' has changed since the previous run:

["danglin at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

This is the second time I have seen this.  It's with
make -j4 bootstrap

...
checking whether the /home/dave/gnu/gcc-4.3/objdir/./gcc/xgcc
-B/home/dave/gnu/gcc-4.3/objdir/./gcc/
-B/home/dave/opt/gnu/gcc/gcc-4.3.0/hppa-linux/bin/
-B/home/dave/opt/gnu/gcc/gcc-4.3.0/hppa-linux/lib/ -isystem
/home/dave/opt/gnu/gcc/gcc-4.3.0/hppa-linux/include -isystem
/home/dave/opt/gnu/gcc/gcc-4.3.0/hppa-linux/sys-include linker
(/home/dave/gnu/gcc-4.3/objdir/./gcc/collect-ld) supports shared libraries...
yes
checking whether -lc should be explicitly linked in... configure: loading cache
./config.cache
configure: error: `CXX' has changed since the previous run:
configure:   former value:  /home/dave/gnu/gcc-4.3/objdir/./gcc/g++
-B/home/dave/gnu/gcc-4.3/objdir/./gcc/ -nostdinc++ 
-L/home/dave/gnu/gcc-4.3/objdir/hppa-linux/libstdc++-v3/src
-L/home/dave/gnu/gcc-4.3/objdir/hppa-linux/libstdc++-v3/src/.libs
-B/home/dave/opt/gnu/gcc/gcc-4.3.0/hppa-linux/bin/
-B/home/dave/opt/gnu/gcc/gcc-4.3.0/hppa-linux/lib/ -isystem
/home/dave/opt/gnu/gcc/gcc-4.3.0/hppa-linux/include -isystem
/home/dave/opt/gnu/gcc/gcc-4.3.0/hppa-linux/sys-include
configure:   current value: /home/dave/gnu/gcc-4.3/objdir/./gcc/g++
-B/home/dave/gnu/gcc-4.3/objdir/./gcc/ -nostdinc++ -nostdinc++
-I/home/dave/gnu/gcc-4.3/objdir/hppa-linux/libstdc++-v3/include/hppa-linux
-I/home/dave/gnu/gcc-4.3/objdir/hppa-linux/libstdc++-v3/include
-I/home/dave/gnu/gcc-4.3/gcc/libstdc++-v3/libsupc++
-I/home/dave/gnu/gcc-4.3/gcc/libstdc++-v3/include/backward
-I/home/dave/gnu/gcc-4.3/gcc/libstdc++-v3/testsuite/util
-L/home/dave/gnu/gcc-4.3/objdir/hppa-linux/libstdc++-v3/src
-L/home/dave/gnu/gcc-4.3/objdir/hppa-linux/libstdc++-v3/src/.libs
-B/home/dave/opt/gnu/gcc/gcc-4.3.0/hppa-linux/bin/
-B/home/dave/opt/gnu/gcc/gcc-4.3.0/hppa-linux/lib/ -isystem
/home/dave/opt/gnu/gcc/gcc-4.3.0/hppa-linux/include -isystem
/home/dave/opt/gnu/gcc/gcc-4.3.0/hppa-linux/sys-include
configure: error: changes in the environment can compromise the build
configure: error: run `make distclean' and/or `rm ./config.cache' and start
over
no
...
make[1]: *** [configure-target-boehm-gc] Error 1
make[1]: *** Waiting for unfinished jobs....
...
make[1]: Leaving directory `/home/dave/gnu/gcc-4.3/objdir'
make: *** [bootstrap] Error 2


-- 
           Summary: configure: error: `CXX' has changed since the previous
                    run:
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: danglin at gcc dot gnu dot org
 GCC build triplet: hppa-unknown-linux-gnu
  GCC host triplet: hppa-unknown-linux-gnu
GCC target triplet: hppa-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34555