[freetds] Can't compile DB-Lib applications under FreeTDS tree
dchang at fsautomation.com
Wed Oct 24 16:30:09 EDT 2007
James and entropy,
It turns out that I had the Windows path before the CYGWIN path and there
was a conflict with the 'find' command. Because of that, the configure
script couldn't do its job correctly. When I put the CYGWIN path before the
Windows path, everything compiled correctly.
By the way, the SQL Server DB-Library function dbfreelogin() is not
available in FreeTDS. Can you put this macro
#define dbfreelogin(x) dbloginfree((x))
into sqldb.h or sybdb.h.
----- Original Message -----
From: "James K. Lowden" <jklowden at freetds.org>
To: "FreeTDS Development Group" <freetds at lists.ibiblio.org>
Sent: Thursday, October 18, 2007 7:09 AM
Subject: Re: [freetds] Can't compile DB-Lib applications under FreeTDS tree
> David Chang wrote:
>> I'm trying to build FreeTDS under Cygwin. It seems to build the library
>> (libsybdb.a) correctly, but when it tries to link, there are several
>> missing references. I simply downloaded 0.64 and ran the following:
>> ./configure --enable-extra-checks --prefix=/home/dchang/freetds_0.64
>> Here's the output of the faulty linking...
>> /bin/sh ../../libtool --tag=CC --mode=link gcc -g -O2 -o freebcp.exe
>> freebcp.o ../dblib/libsybdb.la gcc -g -O2 -o freebcp.exe freebcp.o
>> ../dblib/.libs/libsybdb.a /usr/lib/libiconv.dll.a freebcp.o: In function
>> ebcp.c:244: undefined reference to `_tdsdump_open'
> It looks like libsybdb.a is not built correctly. It should include
> tdsdump_open et al.
> $ nm src/dblib/.libs/libsybdb.a \
> | sed -Ene '/tdsdump_open|o:$/p' \
> | grep -C1 tdsdump_open
> U tdsdump_open
> U tdsdump_open
> 00000054 T tdsdump_open
> ^^^ object code present
> What does your log show for the command that produced libsybdb.a?
>> The weird thing is that tsql.exe links fine
> libsybdb is the db-lib library, which freebcp uses. tsql is really
> intended to test the libtds layer. It doesn't need that library because
> it doesn't use db-lib.
> Each client library includes any functions it needs from the src/tds part
> of the tree. Most applications use a client library and get any such
> functions that way. tsql instead links to them directly.
> HTH. It's hard to describe clearly.
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