Jeanfrancois Arcand wrote:
> Hi,
>
> I'm currently working on a PHP's Grizzly extension via the
> com.sun.grizzly.Adapter class, and today I've hit a wall :-). What I
> want to do is:
>
> Client --> Request --> Grizzly --> PHPAdapter -- JNI Call --> libphp5.so
>
> Inside the PHPAdapter, I did:
>
>> static {
>> System.loadLibrary("php5");
>> }
>
>
> so far so good. Now problems :-) Since I'm working on linux, I need to
> build the libphp5.so from scratch. So I've followed the instruction
> (many many many times ;-) by building Apache2 from scratch, and then
> build php 5 using Apache 2. At the end, I'm getting the libphp5.so,
> which is what I need. Then, I start Grizzly HTTP Server with:
>
> % java -Djava.library.path=/usr/local/apache2/lib/ -jar
> grizzly-http-1.7-SNAPSHOT.jar 8080 /www/php
>
> And *always* get:
>
>> java.lang.UnsatisfiedLinkError:
>> /usr/local/apache2/modules/libphp5.so:
>> /usr/local/apache2/modules/libphp5.so: undefined symbol: ap_rwrite
>> at java.lang.ClassLoader$NativeLibrary.load(Native Method)
>> at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1751)
>> at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1676)
>> at java.lang.Runtime.loadLibrary0(Runtime.java:822)
>> at java.lang.System.loadLibrary(System.java:993)
>
>
> Which is expected, because:
>
>> [jfarcand_at_localhost http]$ ldd -r
>> /usr/local/apache2/modules/libphp5.so linux-gate.so.1 =>
>> (0x00546000)
>> libcrypt.so.1 => /lib/libcrypt.so.1 (0x00ae6000)
>> librt.so.1 => /lib/librt.so.1 (0x00111000)
>> libz.so.1 => /usr/lib/libz.so.1 (0x00125000)
>> libresolv.so.2 => /lib/libresolv.so.2 (0x00164000)
>> libm.so.6 => /lib/libm.so.6 (0x00177000)
>> libdl.so.2 => /lib/libdl.so.2 (0x00f4d000)
>> libnsl.so.1 => /lib/libnsl.so.1 (0x00b6c000)
>> libxml2.so.2 => /usr/lib/libxml2.so.2 (0x00e21000)
>> libc.so.6 => /lib/libc.so.6 (0x001af000)
>> libpthread.so.0 => /lib/libpthread.so.0 (0x0019b000)
>> /lib/ld-linux.so.2 (0x00148000)
>> undefined symbol: ap_rwrite (/usr/local/apache2/modules/libphp5.so)
>> undefined symbol: apr_table_set (/usr/local/apache2/modules/libphp5.so)
>
> [cut ... more than 20]
Hi,
try loading the shared lib (.so) where ap_rwrite, apr_table_set is
defined, first (the way you loaded libphp5.so).
use "nm" to find the symbols in a given library (.so). and append the
location of that library (where ap_* is defined) to java.library.path.
That should work :-)
-hg
>
> Now the ap_* stuff is from Apache2, which is probably dynamically
> loaded when Apache2 start. Now how can I make sure the libph5.so gets
> all its dependencies loaded from java? I did try to add the path to
> Apache 2 *.so file to my -Djava.library.path but still get the same
> exceptions. I did build the libphp5.so on two linux kernel and os X,
> and always get the same exception.
>
> I'm probably missing something trivial :-) Any help appreciated :-)
>
> Thanks
>
> -- Jeanfrancois
>
>
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