Re: `make check -j` fails when building GNU Make from source

[Paul Smith]

On Sun, 2023-04-02 at 14:52 +0200, Alejandro Colomar wrote:
> If I build make from source and run the checks in parallel, some
> fail.  Is this expected, or is it a bug in the Makefile?

The test suite is invoked as a single target, so there's no way that
enabling parallelism could impact it.  Also the test suite tries to be
careful about shielding the internal invocations of make from
environmental factors like user settings of MAKEFLAGS and GNUMAKEFLAGS
etc.

Indeed I tried "make check -j" and got no failures.

Based on the diffs it appears make was able to find files like "foo"
and "bar" when it didn't expect them to exist.  I'm not really sure how
that would happen but if you can figure it out I would be interested to
know.  If you run:

  cd tests
  ./run_make_tests -make ../make features/escape

does it fail?