[GRASS5] Re: grass 5.7 windows?
glynn.clements at virgin.net
Tue Mar 30 10:22:38 EST 2004
Markus Neteler wrote:
> Richard and me are currently testing some recent compilation
> of 5.7 under Cygwin. A strange error occurs:
> are the same file
Is this error correct? I.e. is .../db/shp a link (hard or symbolic) to
> I'm a bit clueless since it should simply copy a file to a new filename:
> tail -3 ~/grass57/db/drivers/dbf/Makefile
> $(CC) $(LDFLAGS) -o $@ $(ARCH_OBJS) $(LIBES) $(MATHLIB) $(XDRLIB)
> cp $(DRIVER) $(SHPDRIVER)
> Any ideas?
According to the error message, the new filename refers to the same
file as the old filename, so you're asking "cp" to copy a file onto
itself, which it refuses to do.
More generally, Makefiles should normally use $(INSTALL) rather than
"cp". The "install" program (or autoconf's install-sh script on
systems which don't have an install program) will handle this
situation somewhat better than "cp", as it replaces an existing
file whereas "cp" will attempt to overwrite it ("cp" behaves similarly
to "cat srcfile > dstfile").
 It will also handle the situation where the destination file is
read-only, or where the destination is the executable for some
Glynn Clements <glynn.clements at virgin.net>
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