ARM compilation error, VFP registers used by executable, not object file

Question

I have been having this problem for the last few days and I can\'t get my head around what is really happening here, or what is the problem.

I have a makefile with t

Answer 1

I was facing the same issue. I was trying to build linux application for Cyclone V FPGA-SoC. I faced the problem as below:

Error:  uses VFP register arguments, main.o does not

I was using the toolchain arm-linux-gnueabihf-g++ provided by embedded software design tool of altera.

It is solved by exporting: mfloat-abi=hard to flags, then arm-linux-gnueabihf-g++ compiles without errors. Also include the flags in both CC & LD.