It seems that this problem is perhaps not make version specific since
I installed GNU make 3.79.1 on a Solaris system and the test suite
passes without the error.
I did a diff between the MinGW Makefile and one from Solaris, and
found not much interesting except for this:
< am__test_logs2 =
* Bob Friesenhahn wrote on Sat, May 23, 2009 at 10:29:18PM CEST:
> On Sat, 23 May 2009, Ralf Wildenhues wrote:
>> * Bob Friesenhahn wrote on Sat, May 23, 2009 at 08:12:33PM CEST:
>>> I now have parallel tests working in GraphicsMagick (verified under
>>> Solaris, FreeBSD, and OS-X Leopard) except t
