check_symbol_exists(pid_t "sys/types.h" HAVE_PID_T)
check_symbol_exists(intmax_t "inttypes.h" HAVE_INTTYPES_H_WITH_UINTMAX)
check_symbol_exists(uintmax_t "stdint.h" HAVE_STDINT_H_WITH_UINTMAX)
check_symbol_exists(pid_t "sys/types.h" HAVE_PID_T)
check_symbol_exists(intmax_t "inttypes.h" HAVE_INTTYPES_H_WITH_UINTMAX)
check_symbol_exists(uintmax_t "stdint.h" HAVE_STDINT_H_WITH_UINTMAX)