I've been following the guide for building for blackberry 10, in a windows host. I've found one inconsistency and two errors following the guide: *First: *In step number 5: For Windows host, edit pjsip.pri in the PJSIP root directory, replace '/C/' with 'C:/'. *Solution:* The file to edit is not pjsip.pri (this file is empty), but build.mak, at line number 1, replace '/C/' with 'C:/'. *Second: *Must disable libyuv or else it won't build. The error is in the row_common.c file from 1247 to 1253: " invalid types 'const signed char __vector__[int]' for array subscript ". *Solution:* This error was also found in freeswitch issue tracker https://freeswitch.org/jira/browse/FS-8884 and the workaround is to add --disable-libyuv to the ./configure-bb10 command *Third:* I was able to run make dep successfully. When i run make aftewards i get an error: C:/Users/lorenzo/Downloads/pjproject-2.6/build/rules.mak:123: *** multiple target patterns. Stop. Samples.mak:62: recipe for target 'auddemo' failed make[2]: *** [auddemo] Error 2 make[2]: Leaving directory 'C:/Users/lorenzo/Downloads/pjproject-2.6/pjsip-apps/build' Makefile:84: recipe for target 'samples' failed make[1]: *** [samples] Error 2 make[1]: Leaving directory 'C:/Users/lorenzo/Downloads/pjproject-2.6/pjsip-apps/build' Makefile:14: recipe for target 'all' failed make: *** [all] Error 1 If i'm not mistaken the error corresponds to a demo project. I can't find a solution to this issue, so please feel free to ask me for more information. I will try to build it under ubuntu and maybe inside momentics directly. Regards, Lorenzo Ferrante