FreeTDS Development Group

[Justin T Pryzby <justinp AT norchemlab.com>]

On Tue, Oct 01, 2013 at 12:05:06AM -0400, James K. Lowden wrote:
> I rather suspect the compiler, because it's what produced ct.o.  What's
> the compiler command line look like?  Anything there that deals with
> symbol visibility or that affects linkage?  

The command is here
https://lists.ibiblio.org/sympa/arc/freetds/2013q3/028575.html
https://lists.ibiblio.org/sympa/arc/freetds/2013q3/028467.html

BTW, the other 3 object files in ctlib/ have the same problem,
whichever is specified first in the link command throws the error.

(BTW, did you see my more recent message?  Just checking)
https://lists.ibiblio.org/sympa/arc/freetds/2013q3/028591.html

I ran gobjdump -t, and found that strlen had a "hidden" attribute; I
noticed that ctlib.h sets gcc attribute "hidden":
#pragma GCC visibility push(hidden)

I was able to compile TDS by moving the include file outside of the
hidden "stack"; not sure if that's correct, but "works for me".

$ diff -U1 freetds-0.91{.orig,}/include/ctlib.h
--- freetds-0.91.orig/include/ctlib.h   Tue Oct  5 01:36:36 2010
+++ freetds-0.91/include/ctlib.h        Tue Oct  1 08:58:01 2013
@@ -26,2 +26,4 @@
 
+#include <tds.h>
+
 #if defined(__GNUC__) && __GNUC__ >= 4 && !defined(__MINGW32__)
@@ -41,3 +43,2 @@
 
-#include <tds.h>
 /*

Justin