[Bug bootstrap/25790] make clean fails

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=25790

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |build
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2017-02-16
                 CC|                            |msebor at gcc dot gnu.org
     Ever confirmed|0                           |1
      Known to fail|                            |4.2.0, 7.0

--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed with recent trunk of GCC 7.0:

$ make -C /build/gcc-trunk clean
...
make[1]: Entering directory '/build/gcc-trunk/x86_64-pc-linux-gnu/libgcc'
make[1]: -B/usr/local/x86_64-pc-linux-gnu/bin/: Command not found
make[1]: -B/usr/local/x86_64-pc-linux-gnu/bin/: Command not found
/bin/sh: line 0: test: !=: unary operator expected
rm -f libgcc_tm.h libgcc.map
Makefile:183: *** Recursive variable 'AR_FOR_TARGET' references itself
(eventually).  Stop.
make[1]: Leaving directory '/build/gcc-trunk/x86_64-pc-linux-gnu/libgcc'
Makefile:22641: recipe for target 'clean-stage1-target-libgcc' failed
make: *** [clean-stage1-target-libgcc] Error 2
make: Leaving directory '/build/gcc-trunk'