NOTE: this is just a sample of how building Symbian specific extensions COULD work. This is most probably far from the best or final way of doing things. The Moped::Msg currently defines just a single static method, get_gsm_network_info(), which returns the GSM network and cell id. The extension code is in Msg.xs (which gets translated by xsubpp into Msg.cpp), the Perl glue code is in To understand the .xs syntax studying perlxstut and perlxs is recommended. The prerequisites for compiling this extension are: (1) The Perl for Symbian SDK installed (either done "make sdkinstall", or separately installed the (2) The etelbgsm.h header, which is available for example from the Symbian 6.1 SDK (the Communicator SDK). This must be copied to ...\epoc32\include. (3) The etel.lib and the gsmbas.lib, they should come both with the 6.1 and 7.0s SDK. The WINS udeb and THUMB urel versions of these must be copied to the directories ...\epoc32\release\wins\udeb and ...\epoc32\release\thumb\urel, respectively. To compile (assuming Perl 5.9.3 and Series 60 SDK 2.6 for Visual C): perl \symbian\perl\5.9.3\bin\ --cpp --extversion=0.1 ext\symbian\Moped\Msg The --symbian indicates the Symbian and SDK version, the --cplusplus indicates that one should generate a .cpp file instead of a .c file. The both configures and builds the extension. To clean do "make clean" or "make distclean". The demonstrates using the extension. To create a SIS: makesis -d%EPOCROOT% ext\Moped\Msg\Msg.pkg TODO: automate the determination of the EXTVERSION (from .pkg?) and of creation of .pkg (the location of the .dll in the build and in the target).