Re: [PATCH] libxl: fix gentypes call in Makefile

[Cedric Bosdonnat <cbosdonnat@suse.com>]

On Thu, 2016-11-10 at 15:49 +0100, Juergen Gross wrote:
> On 10/11/16 14:11, Cédric Bosdonnat wrote:
> > From the make documentation:
> > 
> > "$* [...] If the target is `dir/a.foo.b' and the target pattern is
> > `a.%.b' then the stem is `dir/foo'. In a static pattern rule, the
> > stem is part of the file name that matched the `%' in the target
> > pattern."
> > 
> > The rule generating the c types files from the idl ones is not
> > a static pattern rule, but rather an implicit rule. Thus the value
> > of $* is preceded by the file path, instead of only what matches %.
> > 
> > In order to get this fixed, drop the path using a $(shell basename $*).
> 
> Why not $(notdir $*) ?

Just because I wasn't aware of it. But of course, I can change to it:
it's surely a more portable solution

--
Cedric

> 
> Juergen
> 
> > 
> > Signed-off-by: Cédric Bosdonnat <cbosdonnat@suse.com>
> > ---
> >  tools/libxl/Makefile | 13 +++++++------
> >  1 file changed, 7 insertions(+), 6 deletions(-)
> > 
> > diff --git a/tools/libxl/Makefile b/tools/libxl/Makefile
> > index af0a3ad..78fede3 100644
> > --- a/tools/libxl/Makefile
> > +++ b/tools/libxl/Makefile
> > @@ -250,12 +250,13 @@ $(LIBXL_OBJS) $(LIBXL_TEST_OBJS) $(LIBXLU_OBJS) \
> >  $(LIBXL_OBJS) $(LIBXL_TEST_OBJS): libxl_internal.h
> >  
> >  _libxl_type%.h _libxl_type%_json.h _libxl_type%_private.h _libxl_type%.c: libxl_type%.idl gentypes.py idl.py
> > -	$(PYTHON) gentypes.py libxl_type$*.idl __libxl_type$*.h __libxl_type$*_private.h \
> > -		__libxl_type$*_json.h  __libxl_type$*.c
> > -	$(call move-if-changed,__libxl_type$*.h,_libxl_type$*.h)
> > -	$(call move-if-changed,__libxl_type$*_private.h,_libxl_type$*_private.h)
> > -	$(call move-if-changed,__libxl_type$*_json.h,_libxl_type$*_json.h)
> > -	$(call move-if-changed,__libxl_type$*.c,_libxl_type$*.c)
> > +	$(eval stem = $(shell basename $*))
> > +	$(PYTHON) gentypes.py libxl_type$(stem).idl __libxl_type$(stem).h __libxl_type$(stem)_private.h \
> > +		__libxl_type$(stem)_json.h  __libxl_type$(stem).c
> > +	$(call move-if-changed,__libxl_type$(stem).h,_libxl_type$(stem).h)
> > +	$(call move-if-changed,__libxl_type$(stem)_private.h,_libxl_type$(stem)_private.h)
> > +	$(call move-if-changed,__libxl_type$(stem)_json.h,_libxl_type$(stem)_json.h)
> > +	$(call move-if-changed,__libxl_type$(stem).c,_libxl_type$(stem).c)
> >  
> >  libxenlight.so: libxenlight.so.$(MAJOR)
> >  	$(SYMLINK_SHLIB) $< $@
> > 
> 
> 

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