building firmware

hi, after a break of one week, the firmware doesn't seem to be built. when typing make clean followed by make or make firmware in ./src/ here is the tail of the output: make -C target/firmware CROSS_COMPILE=arm-elf- make[1]: Betrete Verzeichnis '<snip>/src/target/firmware' make[1]: Für das Ziel »default« ist nichts zu tun. make[1]: Verlasse Verzeichnis '<snip>/src/target/firmware' what am i doing wrong?