diff --git a/libtar/compat.h b/libtar/compat.h
new file mode 100644
index 0000000..70ac2f4
--- /dev/null
+++ b/libtar/compat.h
@@ -0,0 +1,256 @@
+/* prototypes for borrowed "compatibility" code */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <stdarg.h>
+#include <stddef.h>
+
+#ifdef HAVE_LIBGEN_H
+# include <libgen.h>
+#endif
+
+
+#if defined(NEED_BASENAME) && !defined(HAVE_BASENAME)
+
+# ifdef basename
+#  undef basename		/* fix glibc brokenness */
+# endif
+
+char *openbsd_basename(const char *);
+# define basename openbsd_basename
+
+#endif /* NEED_BASENAME && ! HAVE_BASENAME */
+
+
+#if defined(NEED_DIRNAME) && !defined(HAVE_DIRNAME)
+
+char *openbsd_dirname(const char *);
+# define dirname openbsd_dirname
+
+#endif /* NEED_DIRNAME && ! HAVE_DIRNAME */
+
+
+#ifdef NEED_FNMATCH
+# ifndef HAVE_FNMATCH
+
+#  define FNM_NOMATCH	1	/* Match failed. */
+
+#  define FNM_NOESCAPE	0x01	/* Disable backslash escaping. */
+#  define FNM_PATHNAME	0x02	/* Slash must be matched by slash. */
+#  define FNM_PERIOD	0x04	/* Period must be matched by period. */
+
+#  define FNM_LEADING_DIR 0x08	/* Ignore /<tail> after Imatch. */
+#  define FNM_CASEFOLD	0x10	/* Case insensitive search. */
+#  define FNM_IGNORECASE FNM_CASEFOLD
+#  define FNM_FILE_NAME FNM_PATHNAME
+
+int openbsd_fnmatch(const char *, const char *, int);
+#  define fnmatch openbsd_fnmatch
+
+# else /* HAVE_FNMATCH */
+
+#  ifdef HAVE_FNMATCH_H
+#   include <fnmatch.h>
+#  endif
+
+# endif /* ! HAVE_FNMATCH */
+#endif /* NEED_FNMATCH */
+
+
+#ifdef NEED_GETHOSTBYNAME_R
+
+# include <netdb.h>
+
+# if GETHOSTBYNAME_R_NUM_ARGS != 6
+
+int compat_gethostbyname_r(const char *, struct hostent *,
+			   char *, size_t, struct hostent **, int *);
+
+#  define gethostbyname_r compat_gethostbyname_r
+
+# endif /* GETHOSTBYNAME_R_NUM_ARGS != 6 */
+
+#endif /* NEED_GETHOSTBYNAME_R */
+
+
+#if defined(NEED_GETHOSTNAME) && !defined(HAVE_GETHOSTNAME)
+
+int gethostname(char *, size_t);
+
+#endif /* NEED_GETHOSTNAME && ! HAVE_GETHOSTNAME */
+
+
+#ifdef NEED_GETSERVBYNAME_R
+
+# include <netdb.h>
+
+# if GETSERVBYNAME_R_NUM_ARGS != 6
+
+int compat_getservbyname_r(const char *, const char *, struct servent *,
+			   char *, size_t, struct servent **);
+
+#  define getservbyname_r compat_getservbyname_r
+
+# endif /* GETSERVBYNAME_R_NUM_ARGS != 6 */
+
+#endif /* NEED_GETSERVBYNAME_R */
+
+
+
+#ifdef NEED_GLOB
+# ifndef HAVE_GLOB
+
+typedef struct {
+	int gl_pathc;		/* Count of total paths so far. */
+	int gl_matchc;		/* Count of paths matching pattern. */
+	int gl_offs;		/* Reserved at beginning of gl_pathv. */
+	int gl_flags;		/* Copy of flags parameter to glob. */
+	char **gl_pathv;	/* List of paths matching pattern. */
+				/* Copy of errfunc parameter to glob. */
+	int (*gl_errfunc)(const char *, int);
+
+	/*
+	 * Alternate filesystem access methods for glob; replacement
+	 * versions of closedir(3), readdir(3), opendir(3), stat(2)
+	 * and lstat(2).
+	 */
+	void (*gl_closedir)(void *);
+	struct dirent *(*gl_readdir)(void *);
+	void *(*gl_opendir)(const char *);
+	int (*gl_lstat)(const char *, struct stat *);
+	int (*gl_stat)(const char *, struct stat *);
+} glob_t;
+
+/* Flags */
+#  define GLOB_APPEND	0x0001	/* Append to output from previous call. */
+#  define GLOB_DOOFFS	0x0002	/* Use gl_offs. */
+#  define GLOB_ERR	0x0004	/* Return on error. */
+#  define GLOB_MARK	0x0008	/* Append / to matching directories. */
+#  define GLOB_NOCHECK	0x0010	/* Return pattern itself if nothing matches. */
+#  define GLOB_NOSORT	0x0020	/* Don't sort. */
+
+#  define GLOB_ALTDIRFUNC 0x0040 /* Use alternately specified directory funcs. */
+#  define GLOB_BRACE	0x0080	/* Expand braces ala csh. */
+#  define GLOB_MAGCHAR	0x0100	/* Pattern had globbing characters. */
+#  define GLOB_NOMAGIC	0x0200	/* GLOB_NOCHECK without magic chars (csh). */
+#  define GLOB_QUOTE	0x0400	/* Quote special chars with \. */
+#  define GLOB_TILDE	0x0800	/* Expand tilde names from the passwd file. */
+#  define GLOB_NOESCAPE	0x1000	/* Disable backslash escaping. */
+
+/* Error values returned by glob(3) */
+#  define GLOB_NOSPACE	(-1)	/* Malloc call failed. */
+#  define GLOB_ABORTED	(-2)	/* Unignored error. */
+#  define GLOB_NOMATCH	(-3)	/* No match and GLOB_NOCHECK not set. */
+#  define GLOB_NOSYS	(-4)	/* Function not supported. */
+#  define GLOB_ABEND	GLOB_ABORTED
+
+int openbsd_glob(const char *, int, int (*)(const char *, int), glob_t *);
+void openbsd_globfree(glob_t *);
+#  define glob openbsd_glob
+#  define globfree openbsd_globfree
+
+# else /* HAVE_GLOB */
+
+#  ifdef HAVE_GLOB_H
+#   include <glob.h>
+#  endif
+
+# endif /* ! HAVE_GLOB */
+#endif /* NEED_GLOB */
+
+
+#if defined(NEED_INET_ATON) && !defined(HAVE_INET_ATON)
+
+int inet_aton(const char *, struct in_addr *);
+
+#endif /* NEED_INET_ATON && ! HAVE_INET_ATON */
+
+
+#ifdef NEED_MAKEDEV
+
+# ifdef MAJOR_IN_MKDEV
+#  include <sys/mkdev.h>
+# else
+#  ifdef MAJOR_IN_SYSMACROS
+#   include <sys/sysmacros.h>
+#  endif
+# endif
+
+/*
+** On most systems makedev() has two args.
+** Some weird systems, like QNX6, have makedev() functions that expect
+** an extra first argument for "node", which can be 0 for a local
+** machine.
+*/
+
+# ifdef MAKEDEV_THREE_ARGS
+#  define compat_makedev(maj, min)	makedev(0, maj, min)
+# else
+#  define compat_makedev		makedev
+# endif
+
+#endif /* NEED_MAKEDEV */
+
+
+#if defined(NEED_SNPRINTF) && !defined(HAVE_SNPRINTF)
+
+int mutt_snprintf(char *, size_t, const char *, ...);
+int mutt_vsnprintf(char *, size_t, const char *, va_list);
+#define snprintf mutt_snprintf
+#define vsnprintf mutt_vsnprintf
+
+#endif /* NEED_SNPRINTF && ! HAVE_SNPRINTF */
+
+
+#if defined(NEED_STRLCAT) && !defined(HAVE_STRLCAT)
+
+size_t strlcat(char *, const char *, size_t);
+
+#endif /* NEED_STRLCAT && ! HAVE_STRLCAT */
+
+
+#if defined(NEED_STRLCPY) && !defined(HAVE_STRLCPY)
+
+size_t strlcpy(char *, const char *, size_t);
+
+#endif /* NEED_STRLCPY && ! HAVE_STRLCPY */
+
+
+#if defined(NEED_STRDUP) && !defined(HAVE_STRDUP)
+
+char *openbsd_strdup(const char *);
+# define strdup openbsd_strdup
+
+#endif /* NEED_STRDUP && ! HAVE_STRDUP */
+
+
+#if defined(NEED_STRMODE) && !defined(HAVE_STRMODE)
+
+void strmode(register mode_t, register char *);
+
+#endif /* NEED_STRMODE && ! HAVE_STRMODE */
+
+
+#if defined(NEED_STRRSTR) && !defined(HAVE_STRRSTR)
+
+char *strrstr(char *, char *);
+
+#endif /* NEED_STRRSTR && ! HAVE_STRRSTR */
+
+
+#ifdef NEED_STRSEP
+
+# ifdef HAVE_STRSEP
+#  define _LINUX_SOURCE_COMPAT		/* needed on AIX 4.3.3 */
+# else
+
+char *strsep(register char **, register const char *);
+
+# endif
+
+#endif /* NEED_STRSEP */
+
+