On 1/10/07, Jean-Sebastien Delfino <[EMAIL PROTECTED]> wrote:

Simon Laws wrote:
> On 1/9/07, Jean-Sebastien Delfino <[EMAIL PROTECTED]> wrote:
>>
>> Simon Laws wrote:
>> > Ok, so after a rather lengthy (and relaxing) Christmas break I'm
>> > starting to
>> > work again on building up the PHP capability in the C++ SCA
>> > implementation.
>> > There was some work done before Christmas documented on our PHP SCA
>> site
>> > here [1]. There were some previous mail exchanges talking about the
>> > problem
>> > generally [2] and talking about the slight discontinuity between
>> the way
>> > that composition is represented in PHP SCA annotations compared to
the
>> > SCA
>> > SCDL files in C++ SCA [3].
>> >
>> > The first thing I'm going to do is get the existing C++ PHP Extension
>> > up and
>> > running again and submit any changes that are required now that C++
>> > SCA has
>> > moved on and I'm on to a new version of PHP. I'll add some more
detail
>> to
>> > the README about what to do. This note was just to get the ball
>> rolling
>> > again so I'm sure there will be lots more issues to discuss very
>> shortly.
>> >
>> > Regards
>> >
>> > Simon
>> >
>> > [1] -
>> > http://www.osoa.org/display/PHP/PHP+SCA+Extension+For+Tuscany+CPP+SCA
>> > [2] -
>> > http://www.mail-archive.com/tuscany-dev%40ws.apache.org/msg11572.html
>> > [3] -
>> > http://www.mail-archive.com/tuscany-dev%40ws.apache.org/msg11747.html
>> >
>>
>> Simon,
>>
>> How are you building the PHP runtime to work both with the PHP SCA_SDO
>> package at http://pecl.php.net/package/SCA_SDO and the Tuscany PHP
>> extension?
>>
>> I built PHP 5.2.0 on my Linux box like this:
>> ./configure --prefix=/home/delfinoj/Tuscany/php5/php-5.2.0-bin
>> --with-apxs2 --enable-embed
>> make
>> make install
>>
>> --enable-embed allows linking with extension (and in particular the
>> Tuscany extension)
>> --with-apxs2 allows PHP5 to run as an Apache2 module (rather than CGI).
>>
>> I then built and linked the Tuscany extension to libphp5.so, like this:
>> libtuscany_sca_php_la_LIBADD = -L${TUSCANY_SDOCPP}/lib -ltuscany_sdo \
>>         -L$(top_builddir)/runtime/core/src -ltuscany_sca \
>>         -L${PHP_LIB} -lphp5
>>
>> INCLUDES = -Imodel -I$(top_builddir)/runtime/core/src \
>>            -I${TUSCANY_SDOCPP}/include \
>>            -I${PHP_INCLUDE} \
>>            -I${PHP_INCLUDE}/main \
>>            -I${PHP_INCLUDE}/Zend \
>>            -I${PHP_INCLUDE}/TSRM \
>>            -I${PHP_INCLUDE}/sapi/embed
>>
>>
>> The problem is that when I try to run Tuscany outside of Httpd (from
the
>> command line) the PHP extension won't load, complaining about
unresolved
>> references to Httpd symbols. Here's the log:
>>
>> 2555:3086005952     Library:
>>
>>
/home/delfinoj/Tuscany/apache-deploy/cpp/sca/extensions/php/lib/libtuscany_sca_php.so
>>
>> 2555:3086005952   SystemConfigurationException raised: Unable to load
>> library:
>>
>>
/home/delfinoj/Tuscany/apache-deploy/cpp/sca/extensions/php/lib/libtuscany_sca_php.so:
>>
>> /home/delfinoj/Tuscany/php5/php-5.2.0-bin/lib/libphp5.so: undefined
>> symbol: ap_rwrite
>> 2555:3086005952   SystemConfigurationException raised: Unable to load
>> library:
>>
>>
/home/delfinoj/Tuscany/apache-deploy/cpp/sca/extensions/php/lib/libtuscany_sca_php.so:
>>
>> /home/delfinoj/Tuscany/php5/php-5.2.0-bin/lib/libphp5.so: undefined
>> symbol: ap_rwrite
>> 2555:3086005952     << void tuscany::sca::util::Library::load()
>>
>> The unresolved symbol, ap_rwrite is in Httpd protocol.c, part of the
>> core Httpd server. Did you run into this issue with PHP SCA_SDO? Are
>> people using two different PHP libraries, one for use inside Httpd the
>> other for use outside?
>>
>> Thanks,
>>
>> --
>> Jean-Sebastien
>>
>>
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>
>
>
> Hi Jean-Sebastien
>
> The truth is I'm not yet so I may not be much helkp to you. I'm
> struggling
> to get C++/SCA to run again due to the start up crash I'm
> investigating:-(
> I did have this working on windows before Christmas though but I didn't
> cross the bridge of running it in Apache. I ran it from the Axis
> standalone
> server.
>
> Having said this I have PHP compile to integrate with Apache on both
> of my
> linux boxes. One uses --enable-fastcgi and the other --with-apxs2. In
> both
> of these cases I can run the CLI version of PHP i.e. I can run without
> Apache OK. Neither of these are compiled with embedding turned on
> though so
> there may be some problem there.
>
> I have only compiled for embedding on windows to date where I have my
> Apache
> integration set to --enable-fastcgi (nothing like a bit of variety).
> In the
> windows case though the embedding API is compiled into a separate
> library. I
> don't believe that is relevant though.
>
> So a couple of things to try.
>
> Can you try running PHP from the command line to check that it works
> stand
> alone.
>  - you might need to do a make install-cli
> By way of experiment can you
>  - link with the Apache libraries that provide the missing function
>  - build PHP with cgi Apache integration and see if that works
>  - build PHP without Apache integration and see if that works.
>
> The only reference to problems with ap_rwite that I found with a quick
> Google search was from someone trying to integrate with Apache and they
> solved it with a clean rebuild so not very helpful.
>
> It may be that you have to suffer with building PHP for different
> environments.
>
> Simon
>

Simon,

I followed your advice and found a combination that works on Linux:

To build the PHP 5.2.0 runtime:
./configure --prefix=/home/delfinoj/Tuscany/php5/php-5.2.0-bin
--with-apxs2 --enable-embed=static
make
make install

To build the PHP extension:
libtuscany_sca_php_la_LIBADD = -L${TUSCANY_SDOCPP}/lib -ltuscany_sdo \
    -L$(top_builddir)/runtime/core/src -ltuscany_sca \
    -L${PHP_LIB} -lphp5 -lresolv

--enable-embed=static allows the PHP extension shared lib to link with
the PHP extension SAPI without creating a dependency on the Apache HTTPD
runtime (which is in the server executable instead of a lib and
therefore not available in a client).

-lresolv satisfies the PHP runtime dependency on the DNS resolver library.

With this configuration I can see the Tuscany runtime load and
initialize the PHP extension.

--
Jean-Sebastien


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Nice one Sebastien. I'll put these notes in the readme for the extension.
We can't provide a makefile for PHP for obvious reasons but we can at least
record your experience.

Thanks

Simon

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