make: *** [Makefile:906: all] Error 2

[rih5342]

I'm running W10-64 + cygwin64 + GCC 830

This error resulted from the following make command
  make -j4  


What does Error 2 mean?

   *** [Makefile:906: all] Error 2  


Lines near 906 in the make file 


# The target built for a native non-bootstrap build.
.PHONY: all
all:
	@: $(MAKE); $(unstage)
	@r=`${PWD_COMMAND}`; export r; \
	s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
	  $(MAKE) $(RECURSE_FLAGS_TO_PASS) all-host all-target \
	&& :


Are these errors listed somewhere?

How do I fix this error?

Thank you.







--
Sent from: http://gcc.1065356.n8.nabble.com/gcc-fortran-f719652.html