prepare (1/3): 
finished

make (2/3): 
make: Entering directory '/out/build/driver'
clang -std=c11 -O2 -o driver driver.c
driver.c:25:9: warning: implicit declaration of function 'kill' is invalid in C99 [-Wimplicit-function-declaration]
        kill(ppid, dunno);
        ^
driver.c:28:20: warning: implicit declaration of function 'fdopen' is invalid in C99 [-Wimplicit-function-declaration]
        FILE *fp = fdopen(fd[0], "r");
                   ^
driver.c:28:15: warning: incompatible integer to pointer conversion initializing 'FILE *' (aka 'struct _IO_FILE *') with an expression of type 'int' [-Wint-conversion]
        FILE *fp = fdopen(fd[0], "r");
              ^    ~~~~~~~~~~~~~~~~~~
driver.c:65:13: warning: implicit declaration of function 'usleep' is invalid in C99 [-Wimplicit-function-declaration]
            usleep(100000);
            ^
4 warnings generated.
driver successfully constructed
make: Leaving directory '/out/build/driver'
make: Entering directory '/out/build/mumsh'
clang -std=c11 -O2 -Wall -Wextra -pedantic -Wno-unused-result -o mumsh main.c
main.c:35:5: warning: implicit declaration of function 'kill' is invalid in C99 [-Wimplicit-function-declaration]
    kill(child_pid,SIGKILL);
    ^
1 warning generated.
clang -std=c11 -O2 -Wall -Wextra -pedantic -Wno-unused-result -fsanitize=address -fno-omit-frame-pointer -fsanitize=undefined -o mumsh_memory_check main.c
main.c:35:5: warning: implicit declaration of function 'kill' is invalid in C99 [-Wimplicit-function-declaration]
    kill(child_pid,SIGKILL);
    ^
1 warning generated.
mumsh successfully constructed
make: Leaving directory '/out/build/mumsh'
finished

clean (3/3): 
finished

all tasks finished, build successfully