[PATCH, libgfortran] Remove AM_MAKEFLAGS.

[David Edelsohn]

	I have not built a cross-compiler with libgfortran.

	BTW, because the Makefile rule to build environ.lo is

environ.lo: runtime/environ.c
        $(LIBTOOL) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o environ.lo `test -f 'runtime/environ.c' || echo '$(srcdir)/'`runtime/environ.c

the only way that "(CC_FOR_TARGET)" would appear in place of $(CC) is if
it *were* getting substituted for CC but substituted incorrectly.  It is
substituting it literally instead of expanding it.

	I would add some commands to the libgfortran Makefile manually to
see what values of $(CC) and $(CC_FOR_TARGET) it is receiving.

	Are you using GNU Bash or HP-UX Shell?  It might be a shell
problem or the version of Make.  I do not have any intuition about the
difference between native and cross build in this case.  Could the cross
build accidentally be invoking a different shell?

	I'm fairly confident that the AM_MAKEFLAGS change was fixing the
symptom and not the problem.

David