Can't link to libstacklib.a - Artemis Thing Plus

Development Boards Artemis
1

So I’m trying to run the hidapp from the Ambiq SDK on the Artemis Thing Plus. I know a lot of symbols I need are in the libstacklib.a library, to which I link but for whatever reason it still can’t find the symbols…

arm-none-eabi-gcc -Wl,-T,/home/mc/AmbiqSuite-Rel2.2.0/boards_sfe/common//tools_sfe/templates/asb_linker.ld -o bin/main_asb.axf bin/main.o bin/startup_gcc.o bin/am_util_delay.o bin/am_util_faultisr.o bin/am_util_stdio.o bin/am_devices_led.o bin/app_main.o bin/hidapp_main.o bin/hid_main.o bin/svc_batt.o bin/app_server.o bin/app_db.o bin/app_slave_leg.o bin/bas_main.o bin/wsf_trace.o bin/wsf_assert.o -mthumb -mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard -nostartfiles -static -Wl,--gc-sections,--entry,Reset_Handler,-Map,bin/main.map -Wl,--start-group -lm -lc -lgcc /home/mc/AmbiqSuite-Rel2.2.0/boards_sfe/artemis_thing_plus//bsp/gcc/bin/libam_bsp.a /home/mc/AmbiqSuite-Rel2.2.0/mcu/apollo3/hal/gcc/bin/libam_hal.a /home/mc/AmbiqSuite-Rel2.2.0/third_party/exactle/projects/generic/stacklib/gcc/bin-cortex-m4/libstacklib.a -Wl,--end-group

That’s the command the make would run. As you can see libstacklib.a is there and the path is 100% correct. Any idea?

2

The linker might have trouble parsing the double “//” between “…plus” and “bsp…” in this path:

/home/mc/AmbiqSuite-Rel2.2.0/boards_sfe/artemis_thing_plus//bsp/gcc/bin/libam_bsp.a
3

It was actually my fault (of course it was). The symbols weren’t defined in the lib. They were printing in the lib with U symbol - meaning undefined… which I didn’t fully understood. I had to actually add a lot of source files.