On Sun, 30 Jan 2000, Karl Nelson wrote:
> >
> > An extremely annoying thing about libsigc++ is that is doesn't support
> > VPATH compiles. So it has broken those for LyX unless you use an external
> > library.
>
> Not sure what a VPATH compile is. Care to clue me in?
> (I know autoconf well, automake poorly, and rpm/deb not at all.)
using libsigc++ cvs repository as an example for the rest of this email:
cd libsigc++ ; ./autogen.sh
cd ../obj-libsigc++ ; ../libsigc++/configure ; make
> > So if you try this and it fails don't blame me blame Karl. Then get a cvs
> > copy of libsigc++ and fix it for Karl (and us). We could probably hack
> > something up for the included library but I think that probably won't work
> > -- the main problem is the generation of the headers from the m4 code
> > needs to be done in the source dirs before you attempt to use the VPATH
> > compile otherwise they get generated into the directories you are building
> > in. And those generated headers are broken because m4 can't find the
> > template.macros.m4 file. Maybe we could just get autogen.sh to generate
> > the headers (both for us and for the full libsigc++).
>
> You likely need to add a "-I $(top_srcdir)/sigc++/macros" or something
> to that effect in the Makefile.am.
That will make m4 find the template.macros.m4 however the bigger problem
is that the generated headers are put into:
obj-libsigc++/sigc++/
instead of
libsigc++/sigc++
so the compiler can't find the generated headers even with a:
-I$(top_srcdir) -I$(top_srcdir)/sigc++
> (This sounds like the usual builddir != srcdir stuff) Just add -I in
> all places it isn't found and send a patch.
Plenty of those -I's already. There's a patch at the end. Not pretty but
it makes libsigc++ compile and install okay when builddir != srcdir.
I'm testing lyx building now... Nope, this patch doesn't work for LyX.
I get a "no rule to make target `slot.h'" using it with the lyx
subpackage. I've gotta get back to my paid job now. Will try more later.
Allan. (ARRae)
--- Makefile.am.orig Mon Jan 31 14:07:37 2000
+++ Makefile.am Mon Jan 31 13:54:23 2000
@@ -23,8 +23,8 @@
handle.h object.h scope.h adaptor.h thread.h
-%.h: macros/%.h.m4 macros/template.macros.m4
- m4 -Imacros $(DEFINES) $< > $@
+%.h: $(top_srcdir)/sigc++/macros/%.h.m4
+$(top_srcdir)/sigc++/macros/template.macros.m4
+ m4 -I$(top_srcdir)/sigc++/macros $(DEFINES) $< > $(top_srcdir)/sigc++/$@
all-local: $(LTLIBRARIES)
