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Subject: [Pljava-dev] JNI_CreateJavaVM
Date: Mon, 25 Sep 2006 22:16:17 +0200
Message-ID: <45183911.2020205@logix-tt.com> (raw)
In-Reply-To: <45182933.6020507@lcrcomputer.net>
References: <450EA703.5080106@lcrcomputer.net>
	<450EC3EC.1030409@tada.se>
	<450EFD9E.6080103@lcrcomputer.net>
	<45182933.6020507@lcrcomputer.net>

Hi, Lyle,

Lyle Giese wrote:
> 
> Below is what I think are the revelent parts of the enviroment and
> ld.so.conf for compiling PL/Java as per the Wiki.  This is as close as I
> can come unless I can find out what specifically the compile process is
> looking for that it obviously cann't find to make it not include
> JNI_CreateJavaVM during the make process.

I just tried my first non-GCJ build of pljava, to cross-check your
problem, and had the same.

Interestingly, the pljava.so does not reference any libjvm or others:

[~/workspace/pljava] -> ldd build/objs/pljava.so            2006-09-25
21:55:18
        linux-gate.so.1 =>  (0xffffe000)
        libc.so.6 => /lib/tls/libc.so.6 (0xb7e07000)
        /lib/ld-linux.so.2 (0x80000000)


I tried to investigate, and the cc call that tries to link all together
has some interesting output:

cc -g [... snipped]  -L/usr/lib  -L. -L"" -ljvm -o pljava.so


I looked into the makefiles, and it seems that the code that tries to
compute $(JVM_LIB) fails, producing an empty string.

My platform is Debian GNU linux/i386, I installed SUN j2sdk-1.5.0_06 via
java-package, JAVA_HOME=/usr/lib/j2sdk1.5-sun

"make -p" spits out:

JRE_LIB := /usr/lib/j2sdk1.5-sun/jre/lib/i486

However, /usr/lib/j2sdk1.5-sun/jre/lib/ does not contain an "i486"
directory, only "i386" is present.

The attached patch fixes the makefile to recognize "i486" by using
"i386" as java_cpu, just like it handles "i686". The resulting pljava.so
references libjvm.so and a bunch of others.

Lyle: Could you please test whether that fixes your problem? If yes, TI
suggest that Thomas reviews the patch and applies it eventually.

HTH,
Markus









Thanks,
Markus


-- 
Markus Schaber | Logical Tracking&Tracing International AG
Dipl. Inf.     | Software Development GIS

Fight against software patents in Europe! www.ffii.org
www.nosoftwarepatents.org
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