┌───┐
│ $ │ ziga > tekpi-eu > 002--helloworld
└─┬─┘
  └─> cat oe-logs/log.do_compile
DEBUG: Executing python function externalsrc_compile_prefunc
NOTE: helloworld: compiling from external source tree /home/ziga/yocto/001--sources/002--helloworld
DEBUG: Python function externalsrc_compile_prefunc finished
DEBUG: Executing shell function do_compile
NOTE: nothing to compile
DEBUG: Shell function do_compile finished

┌───┐
│ $ │ ziga > tekpi-eu > 002--helloworld
└─┬─┘
  └─> ls
main.c  makefile  oe-logs  oe-workdir

┌───┐
│ $ │ ziga > tekpi-eu > 002--helloworld
└─┬─┘
  └─> cat main.c
#include <stdio.h>

int main(void){

    printf("Hello world!\n");
    return 0;
}

┌───┐
│ $ │ ziga > tekpi-eu > 002--helloworld
└─┬─┘
  └─> cat makefile
CC = gcc
#CFLAGS =
#LDFLAGS =

all: main
    #${CC} ${CFLAGS} ${LDFLAGS} -o main main.c
    ${CC} ${CFLAGS} ${LDFLAGS} -o main main.c

.PHONY: clean
clean:
    @rm -rf main

┌───┐
│ $ │ ziga > tekpi-eu > 002--helloworld
└─┬─┘
  └─> cat oe-logs/log.do_compile
DEBUG: Executing python function externalsrc_compile_prefunc
NOTE: helloworld: compiling from external source tree /home/ziga/yocto/001--sources/002--helloworld
DEBUG: Python function externalsrc_compile_prefunc finished
DEBUG: Executing shell function do_compile
NOTE: nothing to compile
DEBUG: Shell function do_compile finished