Missing symbol upon loading module View as Markdown

Nevermind. The config.m4 was messed up so that the module never linked
against libstd++ which, of course, caused som missing symbols.

Best regards
David Olsson

David Olsson wrote:

I have a PHP extension written in C++ which I use for parsing and
building WbXml documents. I have tested building and using it on a 32
bit x86 system running the following:

PHP 4.3.10
GCC 3.3.5
Gentoo Linux 2.6.10-r4

Everything works fine on this configuration. I do however need the
extension to run on a x86 64 bits machine using the following
configuration:

PHP 4.4.0
GCC 3.2.3
RedHat Enterprise Linux 3 2.4.21-15

Everything compiles fine, no errors. When PHP tries to load the module
however, I get the following error:

PHP Warning: Unknown(): Unable to load dynamic library
'/usr/local/php4/extensions/php_wbxml.so' -
/usr/local/php4/extensions/php_wbxml.so: undefined symbol:
__gxx_personality_v0 in Unknown on line 0

The name of the module is, obviously, php_wbxml.so. What does this error
mean? I have tried to explicitly link against libsupc++ (which, from
what I can gather, should include the __gxx_personality_v0 symbol) but
the same error remains.

I have moved other modules without problems between the two systems but
this one doesn't seem to work.

Here's the config.m4 I am using:

PHP_ARG_ENABLE(php_wbxml, whether to enable WbXml support,
[--enable-php_wbxml Enable WbXml support])

if test "$PHP_PHP_WBXML" = "yes"; then
PHP_REQUIRE_CXX()
PHP_ADD_LIBRARY(stdc++, 1, PHP_WBXML_SHARED_LIBADD)
AC_DEFINE(HAVE_PHP_WBXML, 1, [whether you have WbXml])
PHP_NEW_EXTENSION(php_wbxml, php_wbxml.cpp TextXmlDocument.cpp
tinystr.cpp tinyxml.cpp tinyxmlerror.cpp tinyxmlparser.cpp
WbXmlDocument.cpp XmlAttribute.cpp XmlDocument.cpp XmlElement.cpp
XmlHandle.cpp XmlNode.cpp XmlText.cpp, $ext_shared)
fi

VERY grateful for any tips on how to proceed.

Best regards
David Olsson