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List:       sapdb-general
Subject:    RE: I cannot reach libSQLDBC.so
From:       "Schroeder, Alexander" <alexander.schroeder () sap ! com>
Date:       2004-04-29 12:51:55
Message-ID: 821039C4C1647A4D9CFEF51CE9B9AC181E2673 () dewdfe23 ! wdf ! sap ! corp
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Hello Alexio,

A look into that SQLDBC package did show me that the linux shared library is missing some
essential symbols (and thus will not work). 

Until we make a more recent SQLDBC package available, your only chance is in using the static
library that's also in the package, and apparantly contains all objects.

So change in your compilation

-L/home/myUser/sapdb-linux/lib -lSQLDBC

to

/home/myUser/sapdb-linux/lib/libSQLDBC.a

Sorry for any inconvenience caused

Alexander Schröder
SAP DB, SAP Labs Berlin 

> -----Original Message-----
> From: Alexio Cassani [mailto:cassani@webscience.it]
> Sent: Wednesday, April 28, 2004 4:07 PM
> To: maxdb@lists.mysql.com
> Subject: I cannot reach libSQLDBC.so
> 
> 
> Hi,
> I'me developing a C++ library .so that will be installed on a 
> Linux box.
> 
> The step I've followed are:
> 
> 1) Wrote a C++ code
> 2) Copied the libSQLDBC.o and libSQLDBC.a in /lib and /usr/lib
> 3) Compiled my code with the following command: 
> gcc -shared -o libMyLib.so -I/home/myUser/sapdb-linux/incl
> -I/usr/lib/j2sdk1.4.2/include -I/usr/lib/j2sdk1.4.2/include/linux
> -L/home/myUser/sapdb-linux/lib -lSQLDBC myLibSourceCode.cpp
> 4) As my library is accessed through a Java Native Interface 
> the running
> command is the following:
> java -cp myJavaApp.jar:junit.jar myJavaAppTest 
> (it's junit class test)
> The output is the following:
> 
> testMethod(myJavaAppTest)java.lang.UnsatisfiedLinkError:
> /home/myUser/libMyLib.so: /home/myUser/libMyLib.so: undefined symbol:
> _ZN6SQLDBC16GetClientRuntimeEPci
>         at java.lang.ClassLoader$NativeLibrary.load(Native Method)
>         at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1560)
>         at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1456)
>         at java.lang.Runtime.load0(Runtime.java:737)
>         at java.lang.System.load(System.java:811)
>         ...
> 	  ...
> 
> I've tried to compile and execute the HelloWorld application 
> I've found in
> the sapdb-sqldbc-linux-32bit-i386-7_4_4_3beta.tgz archive 
> (the libSQLDBC.so
> and .a I'm using are in this tgz) and the error is similar. 
> Moreover the
> original version of this code was developed under Windows 
> (instead of a .so
> there is, obviously, a dll) and it works fine.
> The system on which I'm developing/testing is a Debian and 
> the SapDB which I
> should connect to is a 7.4.03
> 
> Any suggestion?
> 
> TIA
> Alexio
> 
> 
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