Ping (with one correction).
> -----Original Message----- > From: ANDY KENNEDY > Sent: Wednesday, January 15, 2014 3:16 PM > To: 'gcc@gcc.gnu.org' > Subject: Automatic dependency file generation bug/question > > Reading <http://gcc.gnu.org/news/dependencies.html>, I find that > dependency files should be created along the lines of > > %.o: %.c ... > > In gcc version 4.4.4 (Slackware64 Linux version 13.0), I execute the > following commands: > > touch a.c > gcc -c -MMD -MP -MF"a.d" -MT"a.d" -o "a.o" "a.c" > cat a.d > > and get the following output: > > a.d a.o: a.c > > which is precisely what I want. However, I have a cross compiler using > gcc version 4.7.3 which produces the following output using the same > commands (obviously, with gcc replace with <path to >/bin/gcc: > > a.d: a.c > > I have been looking for the reason for the change, but am unable to find > the rational. > > Please advise whether this is a bug, or if this is meant to be the way > gcc will work for all future releases. As I see it, this complicates my > Makefile(s) as I have two gcc version that behave differently. This > implies that my Makefile(s) will now require a section specifically > dedicated to the .d file generation. Whereas I remember that this used > to be the way I had to construct the dependency list, this was > cumbersome and the way e.g. 4.4.4 supported automatic dependency > generation is preferable to me. > > Thank you for your time, > Andy
