On Tuesday, November 4, 2003, at 11:03 PM, Peter O'Gorman wrote:
To build a loadable library on Mac OS X using gnu libtool, first you
should make sure that you have a working libtool. The one shipping with
panther is gnu libtool 1.5 with some apple patches. Run libtoolize
--force --copy as well as the other auto tools to regenerate configure
and all the Makefile.in's. That done, you may need to edit a couple of
Makefile.am's. If you want your library to be loadable, you will need
to
add "-module" to the libfoo_la_LDFLAGS. This is normally used in
conjunction with "-avoid-version". When building a libfoo.la with the
-module flag, libtool will set the extension to .so and build a Mach-O
bundle. Without the -module flag, it will build a "Shared Library".
Only
bundles may be opened with NSObjectFileImage/NSLinkModule, however
Shared libraries may be added at runtime using NSAddImage and/or
NSAddLibrary. The dlopen available on panther can open both types, but
works best with "bundles".
Thanks for all the information, Peter, but I was kind of hoping to be
able to deliver an application that will compile and run on a
standard-issue Mac running OSX 10.2.* with no need for pre-installs or
hacks of any kind.
Unfortunately that goal appears to be a pipe-dream because I already
depend on the availability of dlopen(), which implies that either
dlcompat or Panther has been installed. Of course, I could just copy
and streamline the dlcompat code and use the NS calls directly --
that's the only way I know to achieve my stated goal.
I think at this point I need to get as low-level as possible so I can
gain some glimmer of understanding of what's really going on. For
example, I think I want to start doing everything with ONLY the "ld"
command.
On that point, here's a problem maybe someone can help me with.
I am trying to build a run-time loaded (dlopen) library called
fexl_test.so. I want to do this using only the ld command. So I try
this:
(I use -lc to include the standard C library so I can use printf.)
The resulting error message is:
ld: Undefined symbols:
dyld_stub_binding_helper
What incantation can I include on the 'ld' command line to avoid this
error?
-- Patrick
_______________________________________________
unix-porting mailing list | email@hidden
Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/unix-porting
Do not post admin requests to the list. They will be ignored.
