quickfix-developers

[Quickfix-developers] JNI library for Linux

[Joerg T. <Joe...@ma...>]

Hello,

we are developing exchange connectivity software running on linux server
machines. The next interface to incorporate is a FIX interface.

Now we are evaluating the QuickFIX engine and it seems to meet our needs 
very closely except for one point: the Linux integration.

We would like to use QuickFIX on Linux from a Java application. The Java
interface for QuickFIX is currently available only for Windows.

To get the Java interface running on Linux, we need

1. The libquickfix.a as a shared object library. The documentation says
    that for Linux only a statically linked version is available. Please,
    could anybody point out more details why this is the case? Perhaps
    this problem could be solved with a newer compiler, e.g. GCC 3.0?

2. There is no appropriate Makefile.am to build the libquickfix_jni.so
    for Linux. Could anybody tell us how to change the Makefile.am (and
    the C++ sources for the JNI interface)?

If we can resolve these points with the help from this list, we could 
get a working Java FIX application for Linux.

Can anyone help?

Thanks in advance.

-- 
Joerg Thoennes
                                http://macd.com
Tel.: +49 (0)241 44597-24      Macdonald Associates GmbH
Fax : +49 (0)241 44597-10      Lothringer Str. 52, D-52070 Aachen

[Quickfix-developers] Re: JNI library for Linux

[Joerg T. <Joe...@ma...>]

Joerg Thoennes wrote:

> 1. The libquickfix.a as a shared object library. The documentation says
>    that for Linux only a statically linked version is available. Please,
>    could anybody point out more details why this is the case? Perhaps
>    this problem could be solved with a newer compiler, e.g. GCC 3.0?

I think I have accomplished this task. The program libtool which is used to
generate shared libs in a platform-independent way always got the option
"-static" which forced it to omit the shared library. This was triggered by
the following line in Makefile.am:

      libquickfix_la_LDFLAGS = -static

In addition, there is a configure option "--enabled-shared". So I did the following:

1. Change all Makefile.am instance to comment out the above line.

2. Go to root directory and:

      ./bootstrap
      ./configure --enable-shared
      make

Then "make install" installs /usr/local/lib as follows:

-rwxr-xr-x    1 root     staff     2402221 Sep  4 17:04 libquickfix.so.0.0.0
lrwxrwxrwx    1 root     staff          20 Sep  4 17:04 libquickfix.so.0 -> libquickfix.so.0.0.0
lrwxrwxrwx    1 root     staff          20 Sep  4 17:04 libquickfix.so -> libquickfix.so.0.0.0
-rwxr-xr-x    1 root     staff         762 Sep  4 17:04 libquickfix.la
-rw-r--r--    1 root     staff    11412896 Sep  4 17:04 libquickfix.a

And
	ldd /usr/local/lib/libquickfix.so.0.0.0
         libxml2.so.2 => /usr/lib/libxml2.so.2 (0x401d5000)
         libc.so.6 => /lib/libc.so.6 (0x40274000)
         libz.so.1 => /usr/lib/libz.so.1 (0x40392000)
         libm.so.6 => /lib/libm.so.6 (0x403a1000)
         /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x80000000)

Now I try to create libquickfix_jni.so using the Makefile.am from src/C++.

Oren, could you please send me your changes?

Thanks, Jörg