--- a/sysdep.h
+++ b/sysdep.h
@@ -37,12 +37,14 @@ int tun_read(int fd, unsigned char *buf,
 int tun_get_hwaddr(int fd, char *dev, uint8_t *hwaddr);
 
 /***************************************************************************/
-#if defined(__linux__) || defined(__GLIBC__)
+#if defined(__GLIBC__) || defined(__UCLIBC__)
 #include <error.h>
+#define HAVE_ERROR     1
+#endif
 
+#if defined(__linux__) || defined(__GLIBC__)
 #define HAVE_VASPRINTF 1
 #define HAVE_ASPRINTF  1
-#define HAVE_ERROR     1
 #define HAVE_UNSETENV  1
 #define HAVE_SETENV    1
 #endif
--- a/sysdep.c
+++ b/sysdep.c
@@ -59,7 +59,9 @@
 #if defined(__DragonFly__)
 #include <net/tun/if_tun.h>
 #elif defined(__linux__)
-#include <linux/if_tun.h>
+# if defined(__GLIBC__) || defined(__UCLIBC__)
+#  include <linux/if_tun.h>
+# endif
 #elif defined(__APPLE__)
 /* no header for tun */
 #elif defined(__CYGWIN__)
--- a/config.c
+++ b/config.c
@@ -28,6 +28,7 @@
 #include <unistd.h>
 #include <string.h>
 #include <errno.h>
+#include <sys/ttydefaults.h>
 #include <sys/types.h>
 #include <sys/utsname.h>
 #include <sys/wait.h>