Hi, First of all is it ARM7 or STM32 (Cortex M3/M4) it I bit of a difference. Secondly I think you need to consider PJSIP's memory requirements have a look on http://www.pjsip.org/testing/0.5.6.5/footprint-arm-rtems.htm and compare that with what you have on you have available on your board. Thirdly it's also a matter on CPU power, some codec might not run on ARM 7/Cortex 3/4, I know ST have ported Speex to STM32. You can use any tool GNU /IAR or other but they all are cross compiles from PC and for some Linux. BR/Olle -----Original Message----- From: pjsip [mailto:pjsip-bounces@xxxxxxxxxxxxxxx] On Behalf Of seba.segura at free.fr Sent: den 25 februari 2014 16:09 To: pjsip at lists.pjsip.org Subject: Porting to ARM Architecture with FreeRTOS Hello, I would like to use PJSIP on a board wich conatain an ARM7 processor (STM32) with FreeRTOS OS. I have several questions : 1) Is it possible porting pjsip in this kind of architecture ? 2) If I understood correctly, I need GNU tools to make the library ? (do I need a Linux computer to make it ?) Thanks for you replies Best regards Sebastien _______________________________________________ Visit our blog: http://blog.pjsip.org pjsip mailing list pjsip at lists.pjsip.org http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org