1. Removed commented include of <endian.h>

2. added config-compat-freebsd.h and updated makefile to include it
   while compilation.

Android.mk

@@ -125,6 +125,9 @@ endif
 ifeq ($(HOST_OS),windows)
 LOCAL_CFLAGS +=-include $(LOCAL_PATH)/config-compat-cygwin.h
 endif
+ifeq ($(HOST_OS),freebsd)
+LOCAL_CFLAGS +=-include $(LOCAL_PATH)/config-compat-freebsd.h
+endif
 
 LOCAL_MODULE:= libelf
 
@@ -184,6 +187,9 @@ endif
 ifeq ($(HOST_OS),windows)
 LOCAL_CFLAGS +=-include $(LOCAL_PATH)/config-compat-cygwin.h
 endif
+ifeq ($(HOST_OS),freebsd)
+LOCAL_CFLAGS +=-include $(LOCAL_PATH)/config-compat-freebsd.h
+endif
 
 LOCAL_MODULE:=libebl
 

config-compat-freebsd.h

@@ -0,0 +1,73 @@
+#ifndef CONFIG_COMPAT_COMPAT_H
+#define CONFIG_COMPAT_COMPAT_H
+
+#define gettext
+#define _gettext
+#define _dgettext
+
+#include <sys/types.h>
+#include <sys/endian.h>
+
+typedef off_t  __off64_t;
+
+#define __LITTLE_ENDIAN (1234)
+#define __BIG_ENDIAN    (4321)
+#define __BYTE_ORDER    __LITTLE_ENDIAN
+
+#include <stddef.h>
+#include <locale.h> //LC_MESSAGES
+#include <assert.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <errno.h>
+#include <stdio.h>
+
+#define dgettext(domainname, msgid)  dcgettext (domainname, msgid, LC_MESSAGES)
+
+static inline void __attribute__((noreturn)) error(int status, int errnum, const char *fmt, ...)
+{
+	va_list lst;
+	va_start(lst, fmt);
+	vfprintf(stderr, fmt, lst);
+	fprintf(stderr, "error %d: %s\n", errnum, strerror(errno));
+	va_end(lst);
+	exit(status);
+}
+
+static inline char *dcgettext (char *__domainname, char *__msgid, int __category)
+{
+	error(EXIT_FAILURE, 0, "%s not implemented!", __FUNCTION__);
+	return NULL;
+}
+
+static inline size_t strnlen (const char *__string, size_t __maxlen)
+{
+	int len = 0;
+	while (__maxlen-- && *__string++)
+		len++;
+	return len;
+}
+
+static inline void *mempcpy (void * __dest, const void * __src, size_t __n)
+{
+	memcpy(__dest, __src, __n);
+	return ((char *)__dest) + __n;
+}
+
+#define __mempcpy mempcpy
+
+static inline wchar_t *wmempcpy (wchar_t *__restrict __s1, __const wchar_t *__restrict __s2, size_t __n)
+{
+	error(EXIT_FAILURE, 0, "%s not implemented!", __FUNCTION__);
+	return NULL;
+}
+
+
+#define bswap_16 bswap16
+#define bswap_32 bswap32
+#define bswap_64 bswap64
+
+extern int ___libelf_fill_byte;
+
+#endif /*CONFIG_COMPAT_DARWIN_H*/

libelf/elf32_checksum.c

@@ -20,7 +20,6 @@
 #endif
 
 #include <assert.h>
-//#include <endian.h>
 #include <stdbool.h>
 #include <stddef.h>
 #include <string.h>