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From <cost...@covalent.net>
Subject Re: jk2 problems with libapr.so
Date Wed, 16 Jan 2002 02:03:43 GMT
That's a bit problematic...

I think it'll work fine if LD_LIBRARY_PATH is set before starting tomcat
to include all the libs ( and libapr ) or of libapr ( and the rest ) are
installed in the system dirs ( i.e. /usr/lib ).

The code in loadNative() was trying to work around and not require the
user to set LD_LIBRARY_PATH, but including all deps is ugly.

I suppose having libapr in lib path is a 'decent' requirement and we
should drop the workaround.

Using the .a lib is imho the worst solution - and I'm not sure how it'll
interact with the jni connector ( when apr syms will be loaded twice ).


Costin


On Mon, 14 Jan 2002, jean-frederic clere wrote:

> Hi,
>
> I am playing with jk2 and I have noted that the loadNative() in AprImpl fails:
> +++
> java.lang.UnsatisfiedLinkError:
> /home/jakarta/jakarta-tomcat-4.0.1/webapps/jk/WEB-INF/jk2/jni/libapr.so:
> /home/jakarta/jakarta-tomcat-4.0.1/webapps/jk/WEB-INF/jk2/jni/libapr.so:
> undefined symbol: crypt
>         at java.lang.ClassLoader$NativeLibrary.load(Native Method)
>         at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1382)
>         at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1277)
>         at java.lang.Runtime.load0(Runtime.java:698)
>         at java.lang.System.load(System.java:797)
>         at org.apache.jk.apr.AprImpl.loadNative(AprImpl.java:90)
>         at org.apache.jk.apr.AprImpl.loadNative(AprImpl.java:78)
>         at org.apache.jk.common.ChannelUn.init(ChannelUn.java:135)
> +++
> The problem is that apr needs other dynamic library.
>
> How should we solve the problem?:
> 1 - Loading the missing libraries in the JVM (via System.load()) The list of
> needed library is in APRVARS.
> 2 - Link jni_connect.so against a static libapr.a (like in mod_webapp for
> Apache-1.3).
>     something like: gcc -shared -lm -lcrypt -lnsl -ldl -o jni_connect.so ...
> libapr.a
>
> Any comments?
>
> Cheers
>
> Jean-frederic
>
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