diff --git a/arch/arm64/src/common/arm64_arch_timer.c b/arch/arm64/src/common/arm64_arch_timer.c
index 28e760c2cba77..ff1b97b92dc20 100644
--- a/arch/arm64/src/common/arm64_arch_timer.c
+++ b/arch/arm64/src/common/arm64_arch_timer.c
@@ -32,6 +32,7 @@
 #include <nuttx/arch.h>
 #include <arch/irq.h>
 #include <arch/chip/chip.h>
+#include <nuttx/kmalloc.h>
 #include <nuttx/spinlock.h>
 #include <nuttx/timers/arch_alarm.h>
 
diff --git a/include/nuttx/lib/lib.h b/include/nuttx/lib/lib.h
index c6d7e7ada8dc0..8d9ddd18d98ec 100644
--- a/include/nuttx/lib/lib.h
+++ b/include/nuttx/lib/lib.h
@@ -28,9 +28,15 @@
  ****************************************************************************/
 
 #include <nuttx/config.h>
-#include <nuttx/fs/fs.h>
-#include <nuttx/kmalloc.h>
-
+#if !defined(CONFIG_BUILD_FLAT) && defined(__KERNEL__)
+#  include <nuttx/kmalloc.h>
+#else
+#  include <stdlib.h>
+#endif
+#ifdef CONFIG_FILE_STREAM
+#  include <nuttx/fs/fs.h>
+#endif
+#include <stdbool.h>
 #include <limits.h>
 #include <alloca.h>
 
diff --git a/include/nuttx/streams.h b/include/nuttx/streams.h
index 8ed689cf14a3e..0b1f73314849a 100644
--- a/include/nuttx/streams.h
+++ b/include/nuttx/streams.h
@@ -211,6 +211,7 @@ struct lib_rawoutstream_s
   int                    fd;
 };
 
+#ifndef CONFIG_DISABLE_MOUNTPOINT
 struct lib_fileinstream_s
 {
   struct lib_instream_s  common;
@@ -222,6 +223,7 @@ struct lib_fileoutstream_s
   struct lib_outstream_s common;
   struct file            file;
 };
+#endif
 
 struct lib_rawsistream_s
 {
@@ -428,12 +430,14 @@ void lib_stdsostream(FAR struct lib_stdsostream_s *stream,
  *
  ****************************************************************************/
 
+#ifndef CONFIG_DISABLE_MOUNTPOINT
 int lib_fileinstream_open(FAR struct lib_fileinstream_s *stream,
                           FAR const char *path, int oflag, mode_t mode);
 void lib_fileinstream_close(FAR struct lib_fileinstream_s *stream);
 int lib_fileoutstream_open(FAR struct lib_fileoutstream_s *stream,
                            FAR const char *path, int oflag, mode_t mode);
 void lib_fileoutstream_close(FAR struct lib_fileoutstream_s *stream);
+#endif
 
 /****************************************************************************
  * Name: lib_rawinstream, lib_rawoutstream, lib_rawsistream, and
diff --git a/libs/libc/netdb/lib_getaddrinfo.c b/libs/libc/netdb/lib_getaddrinfo.c
index 9b68bdcc4f36b..223b2f0826208 100644
--- a/libs/libc/netdb/lib_getaddrinfo.c
+++ b/libs/libc/netdb/lib_getaddrinfo.c
@@ -30,9 +30,15 @@
 #include <string.h>
 
 #include <arpa/inet.h>
-#include <nuttx/net/loopback.h>
-#include <netpacket/rpmsg.h>
-#include <netpacket/vm_sockets.h>
+#ifdef CONFIG_NET_LOOPBACK
+#  include <nuttx/net/loopback.h>
+#endif
+#ifdef CONFIG_NET_RPMSG
+#  include <netpacket/rpmsg.h>
+#endif
+#ifdef CONFIG_NET_VSOCK
+#  include <netpacket/vm_sockets.h>
+#endif
 #include <netdb.h>
 #include <sys/un.h>
 
@@ -51,8 +57,12 @@ struct ai_s
     struct sockaddr_un sun;
     struct sockaddr_in sin;
     struct sockaddr_in6 sin6;
+#ifdef CONFIG_NET_RPMSG
     struct sockaddr_rpmsg srp;
+#endif
+#ifdef CONFIG_NET_VSOCK
     struct sockaddr_vm svm;
+#endif
   } sa;
 };
 
@@ -65,12 +75,13 @@ FAR static struct ai_s *alloc_ai(int family, int socktype, int protocol,
 {
   FAR struct ai_s *ai;
 
-  ai = lib_zalloc(sizeof(struct ai_s));
+  ai = lib_malloc(sizeof(struct ai_s));
   if (ai == NULL)
     {
       return ai;
     }
 
+  memset(ai, 0, sizeof(*ai));
   ai->ai.ai_addr     = (FAR struct sockaddr *)&ai->sa;
   ai->ai.ai_family   = family;
   ai->ai.ai_socktype = socktype;
@@ -187,12 +198,13 @@ int getaddrinfo(FAR const char *hostname, FAR const char *servname,
         {
           /* Force network byte order */
 
-          port = HTONS(port);
+          port = htons(port);
         }
       else if ((flags & AI_NUMERICSERV) != 0)
         {
           return EAI_NONAME;
         }
+#if defined(CONFIG_NET_IPv4) || defined(CONFIG_NET_IPv6)
       else if (getservbyname_r(servname, NULL, &ent, NULL, 0, &sp) == OK)
         {
           /* The s_port field of struct servent is required to
@@ -201,6 +213,7 @@ int getaddrinfo(FAR const char *hostname, FAR const char *servname,
 
           port = sp->s_port;
         }
+#endif
       else
         {
           return EAI_SERVICE;
diff --git a/libs/libc/netdb/lib_gethostentbynamer.c b/libs/libc/netdb/lib_gethostentbynamer.c
index 9edbead0d360b..f610b2c4f8ff2 100644
--- a/libs/libc/netdb/lib_gethostentbynamer.c
+++ b/libs/libc/netdb/lib_gethostentbynamer.c
@@ -39,7 +39,9 @@
 #include <arpa/inet.h>
 
 #include <nuttx/net/dns.h>
-#include <nuttx/net/loopback.h>
+#ifdef CONFIG_NET_LOOPBACK
+#  include <nuttx/net/loopback.h>
+#endif
 
 #include "netdb/lib_dns.h"
 #include "netdb/lib_netdb.h"
diff --git a/libs/libc/netdb/lib_netdb.h b/libs/libc/netdb/lib_netdb.h
index 03bb762888cb8..4d97d7779f820 100644
--- a/libs/libc/netdb/lib_netdb.h
+++ b/libs/libc/netdb/lib_netdb.h
@@ -31,6 +31,7 @@
 
 #include <netdb.h>
 #include <stdio.h>
+#include <stdbool.h>
 
 #ifdef CONFIG_LIBC_NETDB