Link failed with latest gcc-arm-none-eabi-gcc(v5.2.1) about rc-light-controller HOT 3 CLOSED

Hi Locke,

I've downloaded GCC 5.2 and was able to reproduce the problem. FYI: the project was developed with GCC 4.8.2

The issue is in the linker script. The linker drags in the C run-time from GCC, but the project comes with its own little run-time, hence the conflict. Excluding the GCC run-time fixes the problem.

With the updated light_controller.ld file the compilation succeeds on 5.2, but I haven't tested it to see whether it also works.

cheers, Werner

from rc-light-controller.

Hello, Werner:
Thanks for your so efficient response. I will take a look. I have no board to test right now as well. Anyway this could be very helpful to understand your project. It is a classical lesson in embedded system.

Thanks! ;-)

Locke

from rc-light-controller.

Hello, Werner:
Please remove redundancy "CPU_FLAGS" in the LD session @mk4, makefile, line 88.
LDFLAGS = $(CPU_FLAGS)
LDFLAGS += -Wl,-T,$(LINKER_SCRIPT) -Wl,-nostdlib -Wl,--warn-common
LDFLAGS += -Wl,--gc-sections -Wl,-Os
LDFLAGS += -Wl,-Map=$(TARGET_MAP) -Wl,--cref
#LDFLAGS += -mthumb -mcpu=cortex-m0plus -mlittle-endian

BR
Locke

from rc-light-controller.