FFTW + jna + java

[Frank Staals]

Hey everyone,

I'm trying to run a java application which uses JNA to use the native 
FFTW libraries. The application was given as a netbeans project which 
was configured for use in Windows. I changed the paths to the windows 
libraries to the FreeBSD versions. However when I try to start the 
application from within netbeans it crashes with the following error 
message:


/libexec/ld-elf.so.1: /usr/local/lib/librfftw.so: Undefined symbol 
fftwnd_create_plan_aux


Has anyone an idea how to fix this ? I'm running FreeBSD 8.0-RC1 on 
amd64 with jdk16, fftw, and jogl installed from ports. I downloaded the 
jna.jar from the jna website ;


FreeBSD Rena.FStaals.LAN 8.0-RC1 FreeBSD 8.0-RC1 #0: Mon Nov  2 13:45:35 
CET 2009 r...@rena.fstaals.lan:/usr/obj/usr/src/sys/RENAKERNEL  amd64


fr...@rena# uname -a
FreeBSD Rena.FStaals.LAN 8.0-RC1 FreeBSD 8.0-RC1 #0: Mon Nov  2 13:45:35 
CET 2009 r...@rena.fstaals.lan:/usr/obj/usr/src/sys/RENAKERNEL  amd64


fr...@rena# pkg_info -Ex jdk
diablo-jdk-1.6.0.07.02_6
jdk-1.6.0.3p4_12

fr...@rena# pkg_info -Ex fftw
fftw-2.1.5_6
fftw3-3.2.2_1

fr...@rena# pkg_info -Ex jogl
jogl-1.1.1

jna.jar version: 3.2.3 downloaded from https://jna.dev.java.net/

The VM-arguments when starting the application :
-Djna.library.path=/usr/local/lib -Djava.libary.path=/usr/local/lib

Anyone an idea what could be causing this, and/or how to fix it ?

--

- Frank


--

- Frank

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Re: FFTW + jna + java

[Dan Nelson]

In the last episode (Nov 11), Frank Staals said:
 
 I'm trying to run a java application which uses JNA to use the native FFTW
 libraries.  The application was given as a netbeans project which was
 configured for use in Windows.  I changed the paths to the windows
 libraries to the FreeBSD versions.  However when I try to start the
 application from within netbeans it crashes with the following error
 message:
 
 /libexec/ld-elf.so.1: /usr/local/lib/librfftw.so: Undefined symbol 
 fftwnd_create_plan_aux

That symbol is defined in libfftw.so; it looks like the librfftw.so builder
forgot to add a link dependency to fftw (if you run ldd
/usr/local/lib/librfftw.so, you can see there are dependencies on libc and
libm, but not fftw).

Depending on how jna access shared libraries, you might be able to work
around it by having jna load the fftw library before rfftw.

-- 
Dan Nelson
dnel...@allantgroup.com
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