Hello,
i'v been trying to compile mysql module for php in qnx 6.50. I'v got apache22, mysql51, and ap-php sucessfully compiled 
and running.
When compiling php-mysql i'v noticed this warning:
...
*** Warning: libtool could not satisfy all declared inter-library
*** dependencied of module mysql. Therefore, libtool will create
*** a static module, that should work as long as the dlopenening
*** application is linked with the -dlopen flag
...

In config.log i'v noticed following:
...
configure:11187: checking whether the c++ linker (/usr/qnx650/host/qnx6/x86/usr/bin/ntox86-ld) supports shared libraries

configure:12085: result: no
configure:12106: c++ -c -O2 -l/usr/pkg/include -l/usr/pkg/include/mysql -l/usr/include -l/usr/pkg/include -l/usr/pkg/
include/mysql -l/usr/include conftest.cpp >&5
PKGSRC-WARNING: Something is trying to run the c++ compiler,
PKGSRC-WARNING: but it is not added to USE_LANGUAGES in the package Makefile.
...

Any idea how to get mysql.so compiled would be appreciated:-)