[En-Nut-Discussion] Compiler/linker problems using arm-none-eabi-gcc for C and C++ code

Harald Kipp harald.kipp at egnite.de
Mon Sep 23 11:59:24 CEST 2013

Hi Giorgio,

On 22.09.2013 14:35, Giorgio Kufoalor wrote:
> After some search on the web, and attempts at different suggestions, I have tried editing "CC = $(TRGT)gcc" to "CC= $(TRGT)g++" in Makevars.gcc, and in this way all files (both C and C++) are compiled and linked using "arm-none-eabi-g++". However, this approach rather results in "undefined reference" errors to some C functions.

Your C code probably uses .c as the file extension. What extension are
you using for your C++ sources?

Right now only .cc is detected by the Makefiles as C++ source code.
Which looks quite strange to me, btw. If you got different file
extensions, you need to modify nut/Makerules.gcc. For example, when
using .cpp then add

%.o : %.cpp
        $(CXX) -c $(CPPFLAGS) $(CXXFLAGS) -o $@ $<

Note, that indented lines require tabs, spaces won't work.



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