How to make .a library and put into the ses projecthttps://devzone.nordicsemi.com/f/nordic-q-a/39004/how-to-make-a-library-and-put-into-the-ses-projectHi Nordic: I want to make .a library, i use gcc to make .a library. And add .a library to my project. when i build the project , show build failed and the message is &quot;.a: error adding symbols: File format not recognized&quot;. please help how to resolveen-USTelligent Community 13Tue, 02 Oct 2018 07:35:15 GMTRE: How to make .a library and put into the ses projecthttps://devzone.nordicsemi.com/thread/151150?ContentTypeID=1Tue, 02 Oct 2018 07:35:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9098a729-feaa-4178-804d-802be40a3261letter57<p>Hi Vidar Berg:</p> <p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;I took your advice that used those as a starting point&nbsp;<span>(\external\micro-ecc\nrf52hf_armgcc\armgcc). now it works. Thanks</span></p><div style="clear:both;"></div>RE: How to make .a library and put into the ses projecthttps://devzone.nordicsemi.com/thread/150948?ContentTypeID=1Mon, 01 Oct 2018 11:59:21 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a24cc6cf-f20c-4cdb-a80e-fe572c830bbcVidar Berg<p>Hi,&nbsp;</p> <p>Are you sure you&#39;re using the <a href="https://developer.arm.com/open-source/gnu-toolchain/gnu-rm/downloads">GNU ARM embedded toolchain</a> to build the library? I would have expected the commands to have the arm-none-eabi-* prefix in that case. Note that we have makefiles for building the external uECC library, maybe you can use those as a starting point (\external\micro-ecc\nrf52hf_armgcc\armgcc).&nbsp;</p><div style="clear:both;"></div>