CSRC := \
abort.c getenv.c mkdtemp.c mktemp.c realpath.c mkstemp.c \
rand.c random.c random_r.c setenv.c system.c div.c ldiv.c lldiv.c \
- getpt.c ptsname.c grantpt.c unlockpt.c drand48-iter.c jrand48.c \
+ getpt.c drand48-iter.c jrand48.c \
jrand48_r.c lrand48.c lrand48_r.c mrand48.c mrand48_r.c nrand48.c \
nrand48_r.c rand_r.c srand48.c srand48_r.c seed48.c seed48_r.c \
- valloc.c posix_memalign.c a64l.c l64a.c __uc_malloc.c
+ valloc.c a64l.c l64a.c __uc_malloc.c
+ifeq ($(UCLIBC_HAS_ADVANCED_REALTIME),y)
+CSRC += posix_memalign.c
+endif
+ifeq ($(UCLIBC_HAS_PTY),y)
+CSRC += grantpt.c unlockpt.c ptsname.c
+endif
ifeq ($(UCLIBC_HAS_ARC4RANDOM),y)
CSRC += arc4random.c
endif