diff --git a/Makefile b/Makefile
index f6cd6a5..a0e3bb3 100644
--- a/Makefile
+++ b/Makefile
@@ -464,27 +464,10 @@
 # possibly be unused though)
 OPTIONS_CFLAGS += $(foreach opt,$(use_opts),$(if $($(opt)),-D$(opt),))
 
-ifneq ($(USE_LINUX_SPLICE),)
-OPTIONS_CFLAGS += -DCONFIG_HAP_LINUX_SPLICE
-endif
-
-ifneq ($(USE_TPROXY),)
-OPTIONS_CFLAGS += -DTPROXY
-endif
-
-ifneq ($(USE_LINUX_TPROXY),)
-OPTIONS_CFLAGS += -DCONFIG_HAP_LINUX_TPROXY
-endif
-
 ifneq ($(USE_LIBCRYPT),)
-OPTIONS_CFLAGS  += -DCONFIG_HAP_CRYPT
 OPTIONS_LDFLAGS += -lcrypt
 endif
 
-ifneq ($(USE_CRYPT_H),)
-OPTIONS_CFLAGS  += -DNEED_CRYPT_H
-endif
-
 ifneq ($(USE_SLZ),)
 # Use SLZ_INC and SLZ_LIB to force path to zlib.h and libz.{a,so} if needed.
 SLZ_INC =
@@ -502,38 +485,29 @@
 endif
 
 ifneq ($(USE_POLL),)
-OPTIONS_CFLAGS += -DENABLE_POLL
 OPTIONS_OBJS   += src/ev_poll.o
 endif
 
 ifneq ($(USE_EPOLL),)
-OPTIONS_CFLAGS += -DENABLE_EPOLL
 OPTIONS_OBJS   += src/ev_epoll.o
 endif
 
 ifneq ($(USE_KQUEUE),)
-OPTIONS_CFLAGS += -DENABLE_KQUEUE
 OPTIONS_OBJS   += src/ev_kqueue.o
 endif
 
 ifneq ($(USE_EVPORTS),)
-OPTIONS_CFLAGS += -DENABLE_EVPORTS
 OPTIONS_OBJS   += src/ev_evports.o
 endif
 
 ifneq ($(USE_VSYSCALL),)
 OPTIONS_OBJS   += src/i386-linux-vsys.o
-OPTIONS_CFLAGS += -DCONFIG_HAP_LINUX_VSYSCALL
 endif
 
 ifneq ($(ASSUME_SPLICE_WORKS),)
 OPTIONS_CFLAGS += -DASSUME_SPLICE_WORKS
 endif
 
-ifneq ($(USE_NETFILTER),)
-OPTIONS_CFLAGS += -DNETFILTER
-endif
-
 ifneq ($(USE_REGPARM),)
 OPTIONS_CFLAGS += -DCONFIG_REGPARM=3
 endif
@@ -755,7 +729,6 @@
 endif
 
 ifneq ($(USE_NS),)
-OPTIONS_CFLAGS += -DCONFIG_HAP_NS
 OPTIONS_OBJS  += src/namespace.o
 endif
 
diff --git a/include/common/accept4.h b/include/common/accept4.h
index 8981b92..7304213 100644
--- a/include/common/accept4.h
+++ b/include/common/accept4.h
@@ -42,7 +42,7 @@
 #endif
 
 #if defined(USE_MY_ACCEPT4) || (!defined(SYS_ACCEPT4) && !defined(__NR_accept4))
-#if defined(CONFIG_HAP_LINUX_VSYSCALL) && defined(__linux__) && defined(__i386__)
+#if defined(USE_LINUX_VSYSCALL) && defined(__linux__) && defined(__i386__)
 /* The syscall is redefined somewhere else */
 extern int accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags);
 #elif ACCEPT4_USE_SOCKETCALL
diff --git a/include/common/compat.h b/include/common/compat.h
index 088b2c9..14996c8 100644
--- a/include/common/compat.h
+++ b/include/common/compat.h
@@ -90,7 +90,7 @@
 /* On Linux 2.4 and above, MSG_TRUNC can be used on TCP sockets to drop any
  * pending data. Let's rely on NETFILTER to detect if this is supported.
  */
-#ifdef NETFILTER
+#ifdef USE_NETFILTER
 #define MSG_TRUNC_CLEARS_INPUT
 #endif
 
@@ -117,14 +117,14 @@
 #define TIMER_INVALID ((timer_t)(unsigned long)(0xfffffffful))
 #endif
 
-#if defined(TPROXY) && defined(NETFILTER)
+#if defined(USE_TPROXY) && defined(USE_NETFILTER)
 #include <linux/types.h>
 #include <linux/netfilter_ipv6.h>
 #include <linux/netfilter_ipv4.h>
 #endif
 
 /* On Linux, IP_TRANSPARENT and/or IP_FREEBIND generally require a kernel patch */
-#if defined(CONFIG_HAP_LINUX_TPROXY)
+#if defined(USE_LINUX_TPROXY)
 #if !defined(IP_FREEBIND)
 #define IP_FREEBIND 15
 #endif /* !IP_FREEBIND */
@@ -134,7 +134,7 @@
 #if !defined(IPV6_TRANSPARENT)
 #define IPV6_TRANSPARENT 75
 #endif /* !IPV6_TRANSPARENT */
-#endif /* CONFIG_HAP_LINUX_TPROXY */
+#endif /* USE_LINUX_TPROXY */
 
 #if defined(IP_FREEBIND)       \
  || defined(IP_BINDANY)        \
@@ -148,9 +148,9 @@
 /* We'll try to enable SO_REUSEPORT on Linux 2.4 and 2.6 if not defined.
  * There are two families of values depending on the architecture. Those
  * are at least valid on Linux 2.4 and 2.6, reason why we'll rely on the
- * NETFILTER define.
+ * USE_NETFILTER define.
  */
-#if !defined(SO_REUSEPORT) && defined(NETFILTER)
+#if !defined(SO_REUSEPORT) && defined(USE_NETFILTER)
 #if    (SO_REUSEADDR == 2)
 #define SO_REUSEPORT 15
 #elif  (SO_REUSEADDR == 0x0004)
diff --git a/include/common/epoll.h b/include/common/epoll.h
index cc395cd..f45aa4f 100644
--- a/include/common/epoll.h
+++ b/include/common/epoll.h
@@ -29,7 +29,7 @@
 #ifndef _COMMON_EPOLL_H
 #define _COMMON_EPOLL_H
 
-#if defined (__linux__) && defined(ENABLE_EPOLL)
+#if defined (__linux__) && defined(USE_EPOLL)
 
 #ifndef USE_MY_EPOLL
 #include <sys/epoll.h>
@@ -70,7 +70,7 @@
 	} data;
 };
 
-#if defined(CONFIG_HAP_LINUX_VSYSCALL) && defined(__linux__) && defined(__i386__)
+#if defined(USE_LINUX_VSYSCALL) && defined(__linux__) && defined(__i386__)
 /* Those are our self-defined functions */
 extern int epoll_create(int size);
 extern int epoll_ctl(int epfd, int op, int fd, struct epoll_event * event);
@@ -94,7 +94,7 @@
 
 #endif /* USE_MY_EPOLL */
 
-#endif /* __linux__ && ENABLE_EPOLL */
+#endif /* __linux__ && USE_EPOLL */
 
 #endif /* _COMMON_EPOLL_H */
 
diff --git a/include/common/namespace.h b/include/common/namespace.h
index 7aacff9..41931ff 100644
--- a/include/common/namespace.h
+++ b/include/common/namespace.h
@@ -4,7 +4,7 @@
 #include <stdlib.h>
 #include <ebistree.h>
 
-#ifdef CONFIG_HAP_NS
+#ifdef USE_NS
 
 struct netns_entry
 {
@@ -28,6 +28,6 @@
 	return socket(domain, type, protocol);
 }
 
-#endif /* CONFIG_HAP_NS */
+#endif /* USE_NS */
 
 #endif /* _NAMESPACE_H */
diff --git a/include/common/splice.h b/include/common/splice.h
index ea29b16..760b6ba 100644
--- a/include/common/splice.h
+++ b/include/common/splice.h
@@ -23,7 +23,7 @@
 #ifndef _COMMON_SPLICE_H
 #define _COMMON_SPLICE_H
 
-#if defined (__linux__) && defined(CONFIG_HAP_LINUX_SPLICE)
+#if defined (__linux__) && defined(USE_LINUX_SPLICE)
 
 #include <errno.h>
 #include <unistd.h>
@@ -49,7 +49,7 @@
 
 #if defined(USE_MY_SPLICE)
 
-#if defined(CONFIG_HAP_LINUX_VSYSCALL) && defined(__linux__) && defined(__i386__)
+#if defined(USE_LINUX_VSYSCALL) && defined(__linux__) && defined(__i386__)
 /* The syscall is redefined somewhere else */
 extern int splice(int fdin, loff_t *off_in, int fdout, loff_t *off_out, size_t len, unsigned long flags);
 #else
@@ -71,7 +71,7 @@
 
 #endif /* USE_MY_SPLICE */
 
-#endif /* __linux__ && CONFIG_HAP_LINUX_SPLICE */
+#endif /* __linux__ && USE_LINUX_SPLICE */
 
 #endif /* _COMMON_SPLICE_H */
 
diff --git a/src/auth.c b/src/auth.c
index 8d1da3e..0232b56 100644
--- a/src/auth.c
+++ b/src/auth.c
@@ -10,15 +10,15 @@
  *
  */
 
-#ifdef CONFIG_HAP_CRYPT
+#ifdef USE_LIBCRYPT
 /* This is to have crypt() defined on Linux */
 #define _GNU_SOURCE
 
-#ifdef NEED_CRYPT_H
+#ifdef USE_CRYPT_H
 /* some platforms such as Solaris need this */
 #include <crypt.h>
 #endif
-#endif /* CONFIG_HAP_CRYPT */
+#endif /* USE_LIBCRYPT */
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -39,7 +39,7 @@
 
 struct userlist *userlist = NULL;    /* list of all existing userlists */
 
-#ifdef CONFIG_HAP_CRYPT
+#ifdef USE_LIBCRYPT
 #ifdef HA_HAVE_CRYPT_R
 /* context for crypt_r() */
 static THREAD_LOCAL struct crypt_data crypt_data = { .initialized = 0 };
@@ -256,7 +256,7 @@
 #endif
 
 	if (!(u->flags & AU_O_INSECURE)) {
-#ifdef CONFIG_HAP_CRYPT
+#ifdef USE_LIBCRYPT
 #ifdef HA_HAVE_CRYPT_R
 		ep = crypt_r(pass, u->pass, &crypt_data);
 #else
diff --git a/src/cfgparse-listen.c b/src/cfgparse-listen.c
index 9e2f44c..f96f154 100644
--- a/src/cfgparse-listen.c
+++ b/src/cfgparse-listen.c
@@ -3320,7 +3320,7 @@
 			goto out;
 		}
 	}
-#ifdef TPROXY
+#ifdef USE_TPROXY
 	else if (!strcmp(args[0], "transparent")) {
 		/* enable transparent proxy connections */
 		curproxy->options |= PR_O_TRANSP;
diff --git a/src/cfgparse.c b/src/cfgparse.c
index a16628a..c8918a9 100644
--- a/src/cfgparse.c
+++ b/src/cfgparse.c
@@ -10,15 +10,15 @@
  *
  */
 
-#ifdef CONFIG_HAP_CRYPT
+#ifdef USE_LIBCRYPT
 /* This is to have crypt() defined on Linux */
 #define _GNU_SOURCE
 
-#ifdef NEED_CRYPT_H
+#ifdef USE_CRYPT_H
 /* some platforms such as Solaris need this */
 #include <crypt.h>
 #endif
-#endif /* CONFIG_HAP_CRYPT */
+#endif /* USE_LIBCRYPT */
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -1505,7 +1505,7 @@
 int
 cfg_parse_netns(const char *file, int linenum, char **args, int kwm)
 {
-#ifdef CONFIG_HAP_NS
+#ifdef USE_NS
 	const char *err;
 	const char *item = args[0];
 
@@ -1701,7 +1701,7 @@
 
 		while (*args[cur_arg]) {
 			if (!strcmp(args[cur_arg], "password")) {
-#ifdef CONFIG_HAP_CRYPT
+#ifdef USE_LIBCRYPT
 				if (!crypt("", args[cur_arg + 1])) {
 					ha_alert("parsing [%s:%d]: the encrypted password used for user '%s' is not supported by crypt(3).\n",
 						 file, linenum, newuser->user);
diff --git a/src/cli.c b/src/cli.c
index 23ab57b..4b430a9 100644
--- a/src/cli.c
+++ b/src/cli.c
@@ -1654,7 +1654,7 @@
 				memcpy(&tmpfd[i % MAX_SEND_FD], &l->fd, sizeof(l->fd));
 				if (!l->netns)
 					tmpbuf[curoff++] = 0;
-#ifdef CONFIG_HAP_NS
+#ifdef USE_NS
 				else {
 					char *name = l->netns->node.key;
 					unsigned char len = l->netns->name_len;
diff --git a/src/connection.c b/src/connection.c
index 908d098..4b4a314 100644
--- a/src/connection.c
+++ b/src/connection.c
@@ -694,7 +694,7 @@
 						goto bad_header;
 					break;
 				}
-#ifdef CONFIG_HAP_NS
+#ifdef USE_NS
 				case PP2_TYPE_NETNS: {
 					const struct netns_entry *ns;
 					ns = netns_store_lookup((char*)tlv_packet->value, tlv_len);
@@ -1228,7 +1228,7 @@
 	}
 #endif
 
-#ifdef CONFIG_HAP_NS
+#ifdef USE_NS
 	if (remote && (remote->proxy_netns)) {
 		if ((buf_len - ret) < sizeof(struct tlv))
 			return 0;
diff --git a/src/fd.c b/src/fd.c
index d924155..d87dddc 100644
--- a/src/fd.c
+++ b/src/fd.c
@@ -151,7 +151,7 @@
 #include <sys/types.h>
 #include <sys/resource.h>
 
-#if defined(ENABLE_POLL)
+#if defined(USE_POLL)
 #include <poll.h>
 #include <errno.h>
 #endif
@@ -477,7 +477,7 @@
 	closefrom(start);
 }
 
-#elif defined(ENABLE_POLL)
+#elif defined(USE_POLL)
 /* This is a portable implementation of closefrom(). It closes all open file
  * descriptors starting at <start> and above. It relies on the fact that poll()
  * will return POLLNVAL for each invalid (hence close) file descriptor passed
@@ -534,7 +534,7 @@
 	}
 }
 
-#else // defined(ENABLE_POLL)
+#else // defined(USE_POLL)
 
 /* This is a portable implementation of closefrom(). It closes all open file
  * descriptors starting at <start> and above. This is a naive version for use
@@ -556,7 +556,7 @@
 	while (start < nbfds)
 		close(start++);
 }
-#endif // defined(ENABLE_POLL)
+#endif // defined(USE_POLL)
 
 /* disable the specified poller */
 void disable_poller(const char *poller_name)
diff --git a/src/haproxy.c b/src/haproxy.c
index 33b30b1..306c34f 100644
--- a/src/haproxy.c
+++ b/src/haproxy.c
@@ -502,19 +502,19 @@
 		"        -N sets the default, per-proxy maximum # of connections (%d)\n"
 		"        -L set local peer name (default to hostname)\n"
 		"        -p writes pids of all children to this file\n"
-#if defined(ENABLE_EPOLL)
+#if defined(USE_EPOLL)
 		"        -de disables epoll() usage even when available\n"
 #endif
-#if defined(ENABLE_KQUEUE)
+#if defined(USE_KQUEUE)
 		"        -dk disables kqueue() usage even when available\n"
 #endif
-#if defined(ENABLE_EVPORTS)
+#if defined(USE_EVPORTS)
 		"        -dv disables event ports usage even when available\n"
 #endif
-#if defined(ENABLE_POLL)
+#if defined(USE_POLL)
 		"        -dp disables poll() usage even when available\n"
 #endif
-#if defined(CONFIG_HAP_LINUX_SPLICE)
+#if defined(USE_LINUX_SPLICE)
 		"        -dS disables splice usage (broken on old kernels)\n"
 #endif
 #if defined(USE_GETADDRINFO)
@@ -1394,19 +1394,19 @@
 	vars_init(&global.vars, SCOPE_PROC);
 
 	global.tune.options |= GTUNE_USE_SELECT;  /* select() is always available */
-#if defined(ENABLE_POLL)
+#if defined(USE_POLL)
 	global.tune.options |= GTUNE_USE_POLL;
 #endif
-#if defined(ENABLE_EPOLL)
+#if defined(USE_EPOLL)
 	global.tune.options |= GTUNE_USE_EPOLL;
 #endif
-#if defined(ENABLE_KQUEUE)
+#if defined(USE_KQUEUE)
 	global.tune.options |= GTUNE_USE_KQUEUE;
 #endif
-#if defined(ENABLE_EVPORTS)
+#if defined(USE_EVPORTS)
 	global.tune.options |= GTUNE_USE_EVPORTS;
 #endif
-#if defined(CONFIG_HAP_LINUX_SPLICE)
+#if defined(USE_LINUX_SPLICE)
 	global.tune.options |= GTUNE_USE_SPLICE;
 #endif
 #if defined(USE_GETADDRINFO)
@@ -1438,23 +1438,23 @@
 					display_build_opts();
 				exit(0);
 			}
-#if defined(ENABLE_EPOLL)
+#if defined(USE_EPOLL)
 			else if (*flag == 'd' && flag[1] == 'e')
 				global.tune.options &= ~GTUNE_USE_EPOLL;
 #endif
-#if defined(ENABLE_POLL)
+#if defined(USE_POLL)
 			else if (*flag == 'd' && flag[1] == 'p')
 				global.tune.options &= ~GTUNE_USE_POLL;
 #endif
-#if defined(ENABLE_KQUEUE)
+#if defined(USE_KQUEUE)
 			else if (*flag == 'd' && flag[1] == 'k')
 				global.tune.options &= ~GTUNE_USE_KQUEUE;
 #endif
-#if defined(ENABLE_EVPORTS)
+#if defined(USE_EVPORTS)
 			else if (*flag == 'd' && flag[1] == 'v')
 				global.tune.options &= ~GTUNE_USE_EVPORTS;
 #endif
-#if defined(CONFIG_HAP_LINUX_SPLICE)
+#if defined(USE_LINUX_SPLICE)
 			else if (*flag == 'd' && flag[1] == 'S')
 				global.tune.options &= ~GTUNE_USE_SPLICE;
 #endif
@@ -1770,7 +1770,7 @@
 #endif
 	}
 
-#ifdef CONFIG_HAP_NS
+#ifdef USE_NS
         err_code |= netns_init();
         if (err_code & (ERR_ABORT|ERR_FATAL)) {
                 ha_alert("Failed to initialize namespace support.\n");
diff --git a/src/mux_h1.c b/src/mux_h1.c
index 918985e..111e262 100644
--- a/src/mux_h1.c
+++ b/src/mux_h1.c
@@ -2273,7 +2273,7 @@
 	return total;
 }
 
-#if defined(CONFIG_HAP_LINUX_SPLICE)
+#if defined(USE_LINUX_SPLICE)
 /* Send and get, using splicing */
 static int h1_rcv_pipe(struct conn_stream *cs, struct pipe *pipe, unsigned int count)
 {
@@ -2379,7 +2379,7 @@
 	.used_streams = h1_used_streams,
 	.rcv_buf     = h1_rcv_buf,
 	.snd_buf     = h1_snd_buf,
-#if defined(CONFIG_HAP_LINUX_SPLICE)
+#if defined(USE_LINUX_SPLICE)
 	.rcv_pipe    = h1_rcv_pipe,
 	.snd_pipe    = h1_snd_pipe,
 #endif
diff --git a/src/mux_pt.c b/src/mux_pt.c
index 18bc96e..1c1dd7f 100644
--- a/src/mux_pt.c
+++ b/src/mux_pt.c
@@ -297,7 +297,7 @@
 	return (cs->conn->xprt->unsubscribe(cs->conn, cs->conn->xprt_ctx, event_type, param));
 }
 
-#if defined(CONFIG_HAP_LINUX_SPLICE)
+#if defined(USE_LINUX_SPLICE)
 /* Send and get, using splicing */
 static int mux_pt_rcv_pipe(struct conn_stream *cs, struct pipe *pipe, unsigned int count)
 {
@@ -325,7 +325,7 @@
 	.snd_buf = mux_pt_snd_buf,
 	.subscribe = mux_pt_subscribe,
 	.unsubscribe = mux_pt_unsubscribe,
-#if defined(CONFIG_HAP_LINUX_SPLICE)
+#if defined(USE_LINUX_SPLICE)
 	.rcv_pipe = mux_pt_rcv_pipe,
 	.snd_pipe = mux_pt_snd_pipe,
 #endif
diff --git a/src/proto_tcp.c b/src/proto_tcp.c
index 95068ee..f595029 100644
--- a/src/proto_tcp.c
+++ b/src/proto_tcp.c
@@ -246,7 +246,7 @@
 {
 	const struct netns_entry *ns = NULL;
 
-#ifdef CONFIG_HAP_NS
+#ifdef USE_NS
 	if (objt_server(conn->target)) {
 		if (__objt_server(conn->target)->flags & SRV_F_USE_NS_FROM_PP)
 			ns = conn->proxy_netns;
@@ -632,7 +632,7 @@
 		if (ret < 0)
 			return ret;
 
-#if defined(TPROXY) && defined(SO_ORIGINAL_DST)
+#if defined(USE_TPROXY) && defined(SO_ORIGINAL_DST)
 		/* For TPROXY and Netfilter's NAT, we can retrieve the original
 		 * IPv4 address before DNAT/REDIRECT. We must not do that with
 		 * other families because v6-mapped IPv4 addresses are still
@@ -778,7 +778,7 @@
 				    (xfer_sock->options & LI_MANDATORY_FLAGS)) {
 					if ((xfer_sock->namespace == NULL &&
 					    l->netns == NULL)
-#ifdef CONFIG_HAP_NS
+#ifdef USE_NS
 					    || (xfer_sock->namespace != NULL &&
 					    l->netns != NULL &&
 					    !strcmp(xfer_sock->namespace,
@@ -1862,7 +1862,7 @@
 }
 #endif
 
-#ifdef CONFIG_HAP_NS
+#ifdef USE_NS
 /* parse the "namespace" bind keyword */
 static int bind_parse_namespace(char **args, int cur_arg, struct proxy *px, struct bind_conf *conf, char **err)
 {
@@ -1979,7 +1979,7 @@
 	{ "v4v6",          bind_parse_v4v6,         0 }, /* force socket to bind to IPv4+IPv6 */
 	{ "v6only",        bind_parse_v6only,       0 }, /* force socket to bind to IPv6 only */
 #endif
-#ifdef CONFIG_HAP_NS
+#ifdef USE_NS
 	{ "namespace",     bind_parse_namespace,    1 },
 #endif
 	/* the versions with the NULL parse function*/
diff --git a/src/proxy.c b/src/proxy.c
index 7b8e294..9fda6e2 100644
--- a/src/proxy.c
+++ b/src/proxy.c
@@ -77,7 +77,7 @@
 	{ "nolinger",     PR_O_TCP_NOLING, PR_CAP_FE | PR_CAP_BE, 0, 0 },
 	{ "persist",      PR_O_PERSIST,    PR_CAP_BE, 0, 0 },
 	{ "srvtcpka",     PR_O_TCP_SRV_KA, PR_CAP_BE, 0, 0 },
-#ifdef TPROXY
+#ifdef USE_TPROXY
 	{ "transparent",  PR_O_TRANSP,     PR_CAP_BE, 0, 0 },
 #else
 	{ "transparent",  0, 0, 0, 0 },
@@ -89,7 +89,7 @@
 /* proxy->options2 */
 const struct cfg_opt cfg_opts2[] =
 {
-#ifdef CONFIG_HAP_LINUX_SPLICE
+#ifdef USE_LINUX_SPLICE
 	{ "splice-request",  PR_O2_SPLIC_REQ, PR_CAP_FE|PR_CAP_BE, 0, 0 },
 	{ "splice-response", PR_O2_SPLIC_RTR, PR_CAP_FE|PR_CAP_BE, 0, 0 },
 	{ "splice-auto",     PR_O2_SPLIC_AUT, PR_CAP_FE|PR_CAP_BE, 0, 0 },
diff --git a/src/raw_sock.c b/src/raw_sock.c
index 6dde3f8..59a7cbc 100644
--- a/src/raw_sock.c
+++ b/src/raw_sock.c
@@ -42,7 +42,7 @@
 #include <types/global.h>
 
 
-#if defined(CONFIG_HAP_LINUX_SPLICE)
+#if defined(USE_LINUX_SPLICE)
 #include <common/splice.h>
 
 /* A pipe contains 16 segments max, and it's common to see segments of 1448 bytes
@@ -237,7 +237,7 @@
 	return done;
 }
 
-#endif /* CONFIG_HAP_LINUX_SPLICE */
+#endif /* USE_LINUX_SPLICE */
 
 
 /* Receive up to <count> bytes from connection <conn>'s socket and store them
@@ -435,7 +435,7 @@
 	.rcv_buf  = raw_sock_to_buf,
 	.subscribe = raw_sock_subscribe,
 	.unsubscribe = raw_sock_unsubscribe,
-#if defined(CONFIG_HAP_LINUX_SPLICE)
+#if defined(USE_LINUX_SPLICE)
 	.rcv_pipe = raw_sock_to_pipe,
 	.snd_pipe = raw_sock_from_pipe,
 #endif
diff --git a/src/server.c b/src/server.c
index b88ab30..52c71a6 100644
--- a/src/server.c
+++ b/src/server.c
@@ -454,7 +454,7 @@
 static int srv_parse_namespace(char **args, int *cur_arg,
                                struct proxy *curproxy, struct server *newsrv, char **err)
 {
-#ifdef CONFIG_HAP_NS
+#ifdef USE_NS
 	char *arg;
 
 	arg = args[*cur_arg + 1];