diff --git a/extensions/app_radgw/hostap_compat.h b/extensions/app_radgw/hostap_compat.h
new file mode 100644
index 0000000..9bee2ac
--- /dev/null
+++ b/extensions/app_radgw/hostap_compat.h
@@ -0,0 +1,194 @@
+/*********************************************************************************************************
+* Software License Agreement (BSD License)                                                               *
+* Author: Sebastien Decugis <sdecugis@freediameter.net>							 *
+*													 *
+* Copyright (c) 2011, WIDE Project and NICT								 *
+* All rights reserved.											 *
+* 													 *
+* Redistribution and use of this software in source and binary forms, with or without modification, are  *
+* permitted provided that the following conditions are met:						 *
+* 													 *
+* * Redistributions of source code must retain the above 						 *
+*   copyright notice, this list of conditions and the 							 *
+*   following disclaimer.										 *
+*    													 *
+* * Redistributions in binary form must reproduce the above 						 *
+*   copyright notice, this list of conditions and the 							 *
+*   following disclaimer in the documentation and/or other						 *
+*   materials provided with the distribution.								 *
+* 													 *
+* * Neither the name of the WIDE Project or NICT nor the 						 *
+*   names of its contributors may be used to endorse or 						 *
+*   promote products derived from this software without 						 *
+*   specific prior written permission of WIDE Project and 						 *
+*   NICT.												 *
+* 													 *
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED *
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
+* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR *
+* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 	 *
+* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 	 *
+* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR *
+* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF   *
+* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.								 *
+*********************************************************************************************************/
+
+/* This file contains compatibility bindings for hostap files.
+ Most of the definitions here come from different files from the hostap project.
+ 
+ We don't care for OS-specific definitions since we are only compatible with POSIX systems.
+ 
+ */
+
+#ifndef _HOSTAP_COMPAT_H
+#define _HOSTAP_COMPAT_H
+
+#include <sys/time.h>
+
+typedef uint64_t u64;
+typedef uint32_t u32;
+typedef uint16_t u16;
+typedef uint8_t u8;
+typedef int64_t s64;
+typedef int32_t s32;
+typedef int16_t s16;
+typedef int8_t s8;
+
+/* md5.c uses a different macro name than freeDiameter for endianness */
+#ifdef HOST_BIG_ENDIAN
+# define WORDS_BIGENDIAN HOST_BIG_ENDIAN
+#else /* HOST_BIG_ENDIAN */
+# undef WORDS_BIGENDIAN
+#endif /* HOST_BIG_ENDIAN */
+
+/* freeDiameter uses the POSIX API, so we don't provide alternatives. This may be changed later as needed */
+#define os_malloc(s) malloc((s))
+#define os_realloc(p, s) realloc((p), (s))
+#define os_free(p) free((p))
+
+#define os_memcpy(d, s, n) memcpy((d), (s), (n))
+#define os_memmove(d, s, n) memmove((d), (s), (n))
+#define os_memset(s, c, n) memset(s, c, n)
+#define os_memcmp(s1, s2, n) memcmp((s1), (s2), (n))
+
+#define os_strdup(s) strdup(s)
+#define os_strlen(s) strlen(s)
+#define os_strcasecmp(s1, s2) strcasecmp((s1), (s2))
+#define os_strncasecmp(s1, s2, n) strncasecmp((s1), (s2), (n))
+#define os_strchr(s, c) strchr((s), (c))
+#define os_strcmp(s1, s2) strcmp((s1), (s2))
+#define os_strncmp(s1, s2, n) strncmp((s1), (s2), (n))
+#define os_strncpy(d, s, n) strncpy((d), (s), (n))
+#define os_strrchr(s, c) strrchr((s), (c))
+#define os_strstr(h, n) strstr((h), (n))
+#define os_snprintf snprintf
+
+#define os_random() random()
+
+static __inline__ void * os_zalloc(size_t size)
+{
+	void *n = os_malloc(size);
+	if (n)
+		os_memset(n, 0, size);
+	return n;
+}
+
+typedef long os_time_t;
+struct os_time {
+	os_time_t sec;
+	os_time_t usec;
+};
+
+static __inline__ int os_get_time(struct os_time *t)
+{
+	int res;
+	struct timeval tv;
+	res = gettimeofday(&tv, NULL);
+	t->sec = tv.tv_sec;
+	t->usec = tv.tv_usec;
+	return res;
+}
+
+/* Macros for handling unaligned memory accesses */
+#define WPA_GET_BE16(a) ((u16) (((a)[0] << 8) | (a)[1]))
+#define WPA_PUT_BE16(a, val)			\
+	do {					\
+		(a)[0] = ((u16) (val)) >> 8;	\
+		(a)[1] = ((u16) (val)) & 0xff;	\
+	} while (0)
+
+#define WPA_GET_LE16(a) ((u16) (((a)[1] << 8) | (a)[0]))
+#define WPA_PUT_LE16(a, val)			\
+	do {					\
+		(a)[1] = ((u16) (val)) >> 8;	\
+		(a)[0] = ((u16) (val)) & 0xff;	\
+	} while (0)
+
+#define WPA_GET_BE24(a) ((((u32) (a)[0]) << 16) | (((u32) (a)[1]) << 8) | \
+			 ((u32) (a)[2]))
+#define WPA_PUT_BE24(a, val)					\
+	do {							\
+		(a)[0] = (u8) ((((u32) (val)) >> 16) & 0xff);	\
+		(a)[1] = (u8) ((((u32) (val)) >> 8) & 0xff);	\
+		(a)[2] = (u8) (((u32) (val)) & 0xff);		\
+	} while (0)
+
+#define WPA_GET_BE32(a) ((((u32) (a)[0]) << 24) | (((u32) (a)[1]) << 16) | \
+			 (((u32) (a)[2]) << 8) | ((u32) (a)[3]))
+#define WPA_PUT_BE32(a, val)					\
+	do {							\
+		(a)[0] = (u8) ((((u32) (val)) >> 24) & 0xff);	\
+		(a)[1] = (u8) ((((u32) (val)) >> 16) & 0xff);	\
+		(a)[2] = (u8) ((((u32) (val)) >> 8) & 0xff);	\
+		(a)[3] = (u8) (((u32) (val)) & 0xff);		\
+	} while (0)
+
+#define WPA_GET_LE32(a) ((((u32) (a)[3]) << 24) | (((u32) (a)[2]) << 16) | \
+			 (((u32) (a)[1]) << 8) | ((u32) (a)[0]))
+#define WPA_PUT_LE32(a, val)					\
+	do {							\
+		(a)[3] = (u8) ((((u32) (val)) >> 24) & 0xff);	\
+		(a)[2] = (u8) ((((u32) (val)) >> 16) & 0xff);	\
+		(a)[1] = (u8) ((((u32) (val)) >> 8) & 0xff);	\
+		(a)[0] = (u8) (((u32) (val)) & 0xff);		\
+	} while (0)
+
+#define WPA_GET_BE64(a) ((((u64) (a)[0]) << 56) | (((u64) (a)[1]) << 48) | \
+			 (((u64) (a)[2]) << 40) | (((u64) (a)[3]) << 32) | \
+			 (((u64) (a)[4]) << 24) | (((u64) (a)[5]) << 16) | \
+			 (((u64) (a)[6]) << 8) | ((u64) (a)[7]))
+#define WPA_PUT_BE64(a, val)				\
+	do {						\
+		(a)[0] = (u8) (((u64) (val)) >> 56);	\
+		(a)[1] = (u8) (((u64) (val)) >> 48);	\
+		(a)[2] = (u8) (((u64) (val)) >> 40);	\
+		(a)[3] = (u8) (((u64) (val)) >> 32);	\
+		(a)[4] = (u8) (((u64) (val)) >> 24);	\
+		(a)[5] = (u8) (((u64) (val)) >> 16);	\
+		(a)[6] = (u8) (((u64) (val)) >> 8);	\
+		(a)[7] = (u8) (((u64) (val)) & 0xff);	\
+	} while (0)
+
+#define WPA_GET_LE64(a) ((((u64) (a)[7]) << 56) | (((u64) (a)[6]) << 48) | \
+			 (((u64) (a)[5]) << 40) | (((u64) (a)[4]) << 32) | \
+			 (((u64) (a)[3]) << 24) | (((u64) (a)[2]) << 16) | \
+			 (((u64) (a)[1]) << 8) | ((u64) (a)[0]))
+
+
+/* Packing structures to avoid padding */
+#ifdef __GNUC__
+#define STRUCT_PACKED __attribute__ ((packed))
+#else
+#define STRUCT_PACKED
+#endif
+
+/* For md5.c file */
+#define INTERNAL_MD5
+#define CONFIG_CRYPTO_INTERNAL
+
+/* For radius.c file */
+#define CONFIG_IPV6
+#include <arpa/inet.h>
+
+
+#endif /* _HOSTAP_COMPAT_H */