[Libcdio-devel] versioned library and libtool/Makefile failure %o vs. $(objdir)%o

[R. Bernstein]

Nick Kurshev reports this problem with respect to libvcd but the
versioning code is the same and right now we don't have a
vcdimager-devel mailing list.

The problem is make not finding some objects files located in 
vcdimager/lib/.libs
like info.o in making libvcdinfo.

>From Nick: 
  > When I try to compile libvcd info I have this message:
  >
  > $echo 'VCDINFO_0 {' > libvcdinfo.la.ver
  > $echo "  global:" >> libvcdinfo.la.ver
  > $nm info.o inf.o info_private.o vcd_read.o | sed -n -e 's/^.*[   ] 
  > [ABCDGIRSTW][ABCDGIRSTW]*[     ][      ]*\([_A-Za-z][_A-Za-z0-9]*\) 
  > $/    \1;/p' | sort | uniq >> libvcdinfo.la.ver
  > $nm: 'info.o': No such file
  > $nm: 'inf.o': No such file
  > $nm: 'info_private.o': No such file
  > $nm: 'vcd_read.o': No such file
  > $echo '};' >> libvcdinfo.la.ver

He suggests this patch (to vcdimager/lib/Makefile, but really it would
be applied to vcdimager/lib/Makefile.am) which basically changes a
reference to %o into $(objdir)%o:

--- Makefile.old        2005-05-15 10:24:19.000000000 +0400
+++ Makefile    2005-05-15 10:28:35.000000000 +0400
@@ -634,7 +634,7 @@
 libvcdinfo.la.ver: $(libvcdinfo_la_OBJECTS)
        echo 'VCDINFO_$(libvcdinfo_la_MAJOR) {' > $@
        echo "  global:" >> $@
-       nm $(patsubst %lo,%o,$(libvcdinfo_la_OBJECTS)) | sed -n -e 's/^.*[      
][ABCDGIRSTW][ABCDGIRSTW]*[     ][      ]*\([_A-Za-z][_A-Za-z0-9]*\)$$/    
\1;/p' | sort | uniq >> $@
+       nm $(patsubst %lo,$(objdir)%o,$(libvcdinfo_la_OBJECTS)) | sed -n -e 
's/^.*[     ][ABCDGIRSTW][ABCDGIRSTW]*[     ][      
]*\([_A-Za-z][_A-Za-z0-9]*\)$$/    \1;/p' | sort | uniq >> $@
        echo '};' >> $@
 
 # EOF

Is this any better? Anyone care to comment on if this proposed change?

Thanks.