Hello, On Fri, Jun 19, 2009 at 03:01:17PM +0200, Thomas Schwinge wrote: > On Fri, Jun 19, 2009 at 12:21:17AM +0300, Sergiu Ivanov wrote: > > On Wed, Jun 17, 2009 at 12:40:56AM +0200, Thomas Schwinge wrote: > > > +%.sdefsi: > > > + echo '#include <hurd/$*.defs>' | \ > > > + $(CPP) \ > > > + $(CPPFLAGS) $(MIGSFLAGS) $($*-MIGSFLAGS) -DSERVERPREFIX=S_ \ > > > + -x c - -o $@ > > > > Could you please explain what this expression does? Does it somehow > > inject the #include statement into the code of fs_notifyServer.c?.. > > The echo statement does the obvious, replacing $* with the so-called stem > (see the Make info manual; the stem is the % part of the target). I.e., > for ``make foo.sdefsi'' we'll get ``#include <hurd/foo.defs>''. This > line of code is piped into GCC (same compiler flags and output file as > before), but additionally GCC is told to read C language source code (-x > c) from stdin (-).
Aha, that's clear. Thanks a lot! :-) Regards, scolobb
