http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54279

             Bug #: 54279
           Summary: first stage build with g++ fails with "." as the first
                    component of $PATH
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: g...@intrepid.com


Posted here:
http://gcc.gnu.org/ml/gcc-patches/2012-08/msg01032.html

This build failure is a likely result of the recent change to compile GCC with
the C++ compiler during the first stage.

1. I have "." on $PATH.

2. In one build of the latest GCC trunk, I specify
   CC=/usr/bin/gcc and CXX=/usr/bin/g++ and everything
   works.

3. In another build, I don't specify CC or CXX.
   Therefore they default to 'gcc' and 'g++'.
   This fails:
   g++: error trying to exec 'cc1plus': execvp: No such file or directory

If I remove "." from $PATH then the configuration in 3 will build.

The problem is that there is a g++ executable under the
built gcc directory, but cc1plus and other g++ component
parts haven't been built yet.

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