Compilers and Libraries forum how to compile c code with cde functions(like __arm_cx1a) using gcc arm toolchain

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how to compile c code with cde functions(like __arm_cx1a) using gcc arm toolchain

Adahill over 4 years ago

Hi,

I am trying to compile a simple test C code which calls a cde function __arm_cx1a.

And always encountered with a ld error: undefined reference to '__builtin_arm_cx1asi'

The version of arm-none-eabi-gcc i am using is 10.2.1(GNU Arm Embedded Toolchain 10-2020-q4-major)

The command is

arm-none-eabi-gcc -mcpu=cortex-m33 test.c -D__ARM_FEATURE_CDE --specs=nosys.specs -mthumb

Anyone know how to work this out?

Thanks.