ESP32 Forum

hi,
i'm trying to call the function which is implemented in a static library(.a file) in app_main(). I already defined to linke this library in the component.mk of the main.c. the libray is prebuilt with GNC toolcahin (gcc),.
the console promote "libmylib.a: error adding symbols: file format not recognized" , do i need to build and ar the library with xtensa toolchain? or i missed something .
can anybody help to figure out where is the problem?

You should be able to use regular 'ar' tool (this tool is not architecture specific), but you do need to use "xtensa-esp32-elf-gcc -mlongcalls" to build the object files which go into the static library.

ESP_igrr wrote: ↑

Wed Apr 08, 2020 7:30 am

You should be able to use regular 'ar' tool (this tool is not architecture specific), but you do need to use "xtensa-esp32-elf-gcc -mlongcalls" to build the object files which go into the static library.

Hi, Thanks you. Yes, indeed i need to rebuild the liabrary with the correct toolchain