libs/nixio: fix compile on OS X

libs/nixio/Makefile

@@ -10,8 +10,14 @@ AXTLS_VERSION = 1.2.1
 AXTLS_DIR     = axTLS
 AXTLS_FILE    = $(AXTLS_DIR)-$(AXTLS_VERSION).tar.gz
 NIXIO_TLS    ?= openssl
-NIXIO_LDFLAGS = -lcrypt
 NIXIO_SO      = nixio.so
+NIXIO_LDFLAGS =
+
+ifeq (,$(findstring Darwin,$(OS)))
+	NIXIO_LDFLAGS += -lcrypt
+else
+	EXTRA_CFLAGS += -D__DARWIN__
+endif
 
 NIXIO_OBJ = src/nixio.o src/socket.o src/sockopt.o src/bind.o src/address.o \
 	    src/poll.o src/io.o src/file.o src/splice.o src/process.o src/syslog.o \

libs/nixio/src/splice.c

@@ -143,7 +143,11 @@ static int nixio_sendfile(lua_State *L) {
 	const off_t offset = lseek(infd, 0, SEEK_CUR);
 
 	do {
+#ifdef __DARWIN__
+		r = sendfile(infd, sock, offset, len, NULL, 0);
+#else
 		r = sendfile(infd, sock, offset, len, NULL, &spliced, 0);
+#endif
 	} while (r == -1 && errno == EINTR);
 
 	if (r == -1) {