On Fri, Mar 19, 2010 at 7:28 AM, Mark Bucciarelli <[email protected]> wrote: > On Thu, Mar 18, 2010 at 12:59 PM, Mark Bucciarelli <[email protected]> wrote: >> >> How do I get the symbolic links generated >> from .so.<version> to .so? >> > > What I've learned: > > * If my test code is right (see below), dlopen("libbat.so") > and dlopen("/usr/local/lib/libbat.so.1.34") do the > same thing on OpenBSD. > > * library_names_spec determines what symbolic links > libtool makes, and OpenBSD and Linux have different > values for this variable. > > * a similar topic came up on this list five years ago [1] > > So, it seems to me the correct approach is to patch > monetdb to skip the call to open() and let dlopen() > do it's thing. > > Does this make sense? (Dynamic loading is new > to me.) > > I'll ping upstream to ask why they call open() before > calling dlopen(). I can't think of what value it adds. > > Thanks, > > m > > [1] http://www.mail-archive.com/[email protected]/msg02600.html > > #include <dlfcn.h> > #include <stdio.h> > > int > main(void) > { > void *handle; > char *fns[] = { > "libbat.so", > "/usr/local/lib/libbat.so.1.34", > "libbat.so.1.34", > "libbat.so.1", > 0 > }; > char **fn; > > for (fn = fns; *fn; fn++) { > fprintf(stderr, "handle = %p for %s\n", dlopen(*fn, > RTLD_NOW), *fn); > dlclose(handle); ^^^^^^^^^^^^^^^^
this probably crashes: use of handle without initialization. > } > return 0; > } > >
