- printf "\tmake -s -f makefile.$$build_arch clean\n" >> BuildMakefile; \\r
- printf "\tmake -s -f makefile.$$build_arch MCU=$$build_mcu BOARD=$$build_board\n\n" >> BuildMakefile; \\r
+ printf "\tmake -s -f makefile.%s clean\n" $$build_arch >> BuildMakefile; \\r
+ printf "\tmake -s -f makefile.%s MCU=%s BOARD=%s\n\n" $$build_arch $$build_mcu $$build_board >> BuildMakefile; \\r