1cmd_certs/built-in.a := echo >/dev/null; rm -f certs/built-in.a; /usr/bin/ccache /home/test/workspace/code/optee_3.16/build/../toolchains/aarch64/bin/aarch64-linux-gnu-ar cDPrST certs/built-in.a certs/system_keyring.o certs/system_certificates.o certs/common.o 2