incubator-nuttx/libs/libc/libc.csv

1	__errno	errno.h	defined(CONFIG_BUILD_FLAT)	FAR int *
2	abort	stdlib.h		void
3	clock	time.h		clock_t
4	getoptargp	unistd.h		FAR char **
5	getoptindp	unistd.h		FAR int *
6	getoptoptp	unistd.h		FAR int *
7	pthread_yield	pthread.h	!defined(CONFIG_DISABLE_PTHREAD)	void
8	rand	stdlib.h		int