I think I may have the answer. When the fink version of unixODBC
failed to build I went after the source and downloaded it from
unixODBC.org. The README.OSX file contains the following:
"It looks as if Darwin (Mac OSX) doesn't support the normal
dlopen type process that unixODBC requires. However help is
at hand in the form of dlcompat-20010831.tar.gz. This file
contains wrappers to emulate the calls. I have put this in
ftp://ftp.easysoft.com/pub/beta/unixODBC/
dlcompat-20010831.tar.gz
It should be downloaded, unpacked then run make install
This should be done before configuring unixODBC
This file was created by Christoph Pfisterer <[EMAIL PROTECTED]> and
the original copy can be found at............."
So I downloaded and installed dlcompat. It is described as:
"This is dlcompat, a small library that emulates the dlopen()
interface on top of Darwin's dyld API.
Unlike dlopen.c in cctools, this allows loading a ".dylib"
library (as long as the RTLD_LOCAL flag isn't passed to dlopen()). It
can
be configured to yield a warning when trying to close it (dynamic
libraries cannot be unloaded).
It automatically searches for modules in several directories (taken
from the environment variables DYLD_LIBRARY_PATH and LD_LIBRARY_PATH,
plus /usr/lib and /lib) when no absolute path is specified and the
module is not found in the current directory."
To cut a long story short, the dlcompat directory looks as follows:
"-rw-r--r-- 1 stu stu 2763 Jun 6 2002 ChangeLog
-rw-r--r-- 1 stu stu 1175 Jun 6 2002 LICENSE
-rw-r--r-- 1 stu stu 2233 Jun 6 2002 Makefile
-rw-r--r-- 1 stu stu 1773 Jun 6 2002 README
-rw-r--r-- 1 stu stu 72 Jun 6 2002 TODO
-rw-r--r-- 1 stu stu 15412 Jun 6 2002 dlfcn.c
-rw-r--r-- 1 stu stu 1486 Jun 6 2002 dlfcn.h
-rw-r--r-- 1 stu stu 9788 Dec 21 14:50 dlfcn.o
-rwxr-xr-x 1 stu stu 15688 Dec 21 14:50 libdl.0.dylib
-rw-r--r-- 1 stu stu 10096 Dec 21 14:50 libdl.a
lrwxr-xr-x 1 stu stu 13 Dec 21 14:50 libdl.dylib -> libdl.
0.dylib"
and there at the end is the culprit. Unfortunately, even with this
in place I couldn't get unixODBC to build -- with or without fink!
After some further poking about, I see some references that suggest
that dlcompat is included in OS X 10.3 and above.
Stuart
________________________
On Dec 23, 2005, at 2:18 PM, Martin Costabel wrote:
Stuart Edwards wrote:
[]
-rw-r--r-- 1 root wheel 15688 Dec 21 14:51 libdl.0.dylib
-rw-r--r-- 1 root wheel 10096 Dec 21 14:51 libdl.a
lrwxr-xr-x 1 root wheel 13 Dec 21 14:51 libdl.dylib ->
libdl.0.dylib
-rwxr-xr-x 1 root wheel 112404 Dec 18 12:39 libedit.2.dylib
lrwxr-xr-x 1 root wheel 15 Jul 10 23:37 libedit.dylib -
> libedit.2.dylib
-rwxr-xr-x 1 root wheel 70284 Dec 18 12:39 libexslt.0.dylib
lrwxr-xr-x 1 root wheel 16 Jul 10 23:37 libexslt.dylib -
> libexslt.0.dylib
-rwxr-xr-x 1 root wheel 880 Nov 1 14:56 libexslt.la
lrwxr-xr-x 1 root wheel 6 Dec 18 12:28 libfl.a -> libl.a
Apparently libdl.0.dylib was installed on 12/21 and either updated
or replaced libdl.dylib which now links to it. I have to assume
that these are changes that were made during a fink update or
installation process since I certainly wouldn't know how or why to
make them. You will notice that the same thing happened to
libexslt.dylib which now links to libexslt.0.dylib.
Libexslt.* looks the same on my machine, so I guess this is OK.
For libdl, however, it would be interesting to know what exactly
happened on Dec 21, 14:51. In particular if this is really related
to Fink, it would be a very serious bug that would need to be
eliminated quickly.
--
Martin
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