Hi Andreas,

> On Sep 24 2018, Ian Lance Taylor <iant@golang.org> wrote:
>
>> * Makefile.am (mostlyclean-local): Run chmod on check-go-dir to
>> make sure it is writable.
>> (check-go-tools): Likewise.
>
> $ make check-gotools
> make[1]: Entering directory `/usr/local/gcc/gcc-20180926/Build/gotools'
> chmod -R u+w check-go-dir
> chmod: cannot access `check-go-dir': No such file or directory
> make[1]: *** [check-go-tool] Error 1
> make[1]: Leaving directory `/usr/local/gcc/gcc-20180926/Build/gotools'
> make: *** [check-gotools] Error 2

I noticed the same when finding that gotools.{sum,log} hadn't been
generated.

The following patch fixed it for me.

	Rainer

-- 
-----------------------------------------------------------------------------
Rainer Orth, Center for Biotechnology, Bielefeld University


2018-09-26  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	* Makefile.am (mostlyclean-local): Ignore chmod errors.
	(check-go-tool): Likewise.
	* Makefile.in: Regenerate.