Using the same .pro file from Mac OS X and UNIX to create a dynamic library fails for Symbian with Nokia Qt SDK 1.0.2 for Windows.
Output from the compiler output:

– 8< –
bldmake bldfiles

The process tried to write to a nonexistent pipe.

ABLD.BAT build gcce udeb

make -r -f "\NokiaQtSDK\Symbian\SDK\EPOC32\BUILD\Users\Johan\dev\qt\kqoauth\EXPORT.make" EXPORT VERBOSE=-s

make[1]: Entering directory `C:/Users/Johan/dev/qt/kqoauth'

Nothing to do
— 8< —

Please refer to complete compiler output as attachment. The compiler output shows also how the unit test that tries to use the dynamic library fails to find the library.

Complete .pro file that is used when compiling the library can be found here: http://gitorious.org/kqoauth/kqoauth/blobs/symbian/src/src.pro
Complete .pro file that is used in the unit test that tries to use the library can be found here: http://gitorious.org/kqoauth/kqoauth/blobs/symbian/tests/ut_kqoauth/ut_kqoauth.pro

The unit test's .pro file might be incomplete since the root issue is that now .dll file is compiled when using the .pro file.