--- /dev/null
+++ b/src/conf.h
@@ -0,0 +1,399 @@
+/* RCS compile-time configuration */
+
+	/* $Id: conf.sh,v 5.25 1995/06/16 06:19:24 eggert Exp $ */
+
+/*
+ * This file is generated automatically.
+ * If you edit it by hand your changes may be lost.
+ * Instead, please try to fix conf.sh,
+ * and send your fixes to rcs-bugs@cs.purdue.edu.
+ */
+
+#define exitmain(n) return n /* how to exit from main() */
+/* #define _POSIX_C_SOURCE 2147483647L */ /* if strict C + Posix 1003.1b-1993 or later */
+/* #define _POSIX_SOURCE */ /* if strict C + Posix 1003.1-1990 */
+
+#include <errno.h>
+#include <stdio.h>
+#include <time.h>
+
+/* Comment out #include lines below that do not work.  */
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <fcntl.h>
+#include <limits.h>
+/* #include <mach/mach.h> */
+/* #include <net/errno.h> */
+#include <pwd.h>
+/* #include <siginfo.h> */
+#include <signal.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <sys/wait.h>
+#include <ucontext.h>
+#include <unistd.h>
+#include <utime.h>
+/* #include <vfork.h> */
+
+/* Define boolean symbols to be 0 (false, the default), or 1 (true).  */
+#define has_sys_param_h 1 /* Does #include <sys/param.h> work?  */
+/* extern int errno; */ /* Uncomment if <errno.h> doesn't declare errno.  */
+#define has_readlink 1 /* Does readlink() work?  */
+#define readlink_isreg_errno EINVAL /* errno after readlink on regular file */
+
+#if has_readlink && !defined(MAXSYMLINKS)
+#	if has_sys_param_h
+#		include <sys/param.h>
+#	endif
+#	ifndef MAXSYMLINKS
+#		define MAXSYMLINKS 20 /* BSD; not standard yet */
+#	endif
+#endif
+
+/* Comment out the typedefs below if the types are already declared.  */
+/* Fix any uncommented typedefs that are wrong.  */
+/* typedef int mode_t; */
+/* typedef long off_t; */
+/* typedef int pid_t; */
+/* typedef int sig_atomic_t; */
+/* typedef unsigned size_t; */
+/* typedef int ssize_t; */
+/* typedef long time_t; */
+/* typedef int uid_t; */
+
+/* Comment out the keyword definitions below if the keywords work.  */
+/* #define const */
+/* #define volatile */
+
+/* Define boolean symbols to be 0 (false, the default), or 1 (true).  */
+#define has_prototypes 1 /* Do function prototypes work?  */
+#define has_stdarg 1 /* Does <stdarg.h> work?  */
+/* #define has_varargs ? */ /* Does <varargs.h> work?  */
+#define va_start_args 2 /* How many args does va_start() take?  */
+
+#if O_BINARY
+	/* Text and binary i/o behave differently.  */
+	/* This is incompatible with Posix and Unix.  */
+#	define FOPEN_RB "rb"
+#	define FOPEN_R_WORK (Expand==BINARY_EXPAND ? "r" : "rb")
+#	define FOPEN_WB "wb"
+#	define FOPEN_W_WORK (Expand==BINARY_EXPAND ? "w" : "wb")
+#	define FOPEN_WPLUS_WORK (Expand==BINARY_EXPAND ? "w+" : "w+b")
+#	define OPEN_O_BINARY O_BINARY
+#else
+	/*
+	* Text and binary i/o behave the same.
+	* Omit "b", since some nonstandard hosts reject it.
+	*/
+#	define FOPEN_RB "r"
+#	define FOPEN_R_WORK "r"
+#	define FOPEN_WB "w"
+#	define FOPEN_W_WORK "w"
+#	define FOPEN_WPLUS_WORK "w+"
+#	define OPEN_O_BINARY 0
+#endif
+
+/* This may need changing on non-Unix systems (notably DOS).  */
+#define OPEN_CREAT_READONLY (S_IRUSR|S_IRGRP|S_IROTH) /* lock file mode */
+#define OPEN_O_LOCK 0 /* extra open flags for creating lock file */
+#define OPEN_O_WRONLY O_WRONLY /* main open flag for creating a lock file */
+
+/* Define or comment out the following symbols as needed.  */
+#if has_prototypes
+#	define P(params) params
+#else
+#	define P(params) ()
+#endif
+#if has_stdarg
+#	include <stdarg.h>
+#else
+#	if has_varargs
+#		include <varargs.h>
+#	else
+		typedef char *va_list;
+#		define va_dcl int va_alist;
+#		define va_start(ap) ((ap) = (va_list)&va_alist)
+#		define va_arg(ap,t) (((t*) ((ap)+=sizeof(t)))  [-1])
+#		define va_end(ap)
+#	endif
+#endif
+#if va_start_args == 2
+#	define vararg_start va_start
+#else
+#	define vararg_start(ap,p) va_start(ap)
+#endif
+#define bad_chmod_close 0 /* Can chmod() close file descriptors?  */
+#define bad_creat0 0 /* Do writes fail after creat(f,0)?  */
+#define bad_fopen_wplus 0 /* Does fopen(f,"w+") fail to truncate f?  */
+#define getlogin_is_secure 0 /* Is getlogin() secure?  Usually it's not.  */
+#define has_attribute_noreturn 1 /* Does __attribute__((noreturn)) work?  */
+#if has_attribute_noreturn
+#	define exiting __attribute__((noreturn))
+#else
+#	define exiting
+#endif
+#define has_dirent 1 /* Do opendir(), readdir(), closedir() work?  */
+#define void_closedir 0 /* Does closedir() yield void?  */
+#define has_fchmod 1 /* Does fchmod() work?  */
+#define has_fflush_input 1 /* Does fflush() work on input files?  */
+#define has_fputs 1 /* Does fputs() work?  */
+#define has_ftruncate 1 /* Does ftruncate() work?  */
+#define has_getuid 1 /* Does getuid() work?  */
+#define has_getpwuid 1 /* Does getpwuid() work?  */
+#define has_memcmp 1 /* Does memcmp() work?  */
+#define has_memcpy 1 /* Does memcpy() work?  */
+#define has_memmove 1 /* Does memmove() work?  */
+#define has_map_fd 0 /* Does map_fd() work?  */
+#define has_mmap 1 /* Does mmap() work on regular files?  */
+#define has_madvise 1 /* Does madvise() work?  */
+#define mmap_signal SIGBUS /* signal received if you reference nonexistent part of mmapped file */
+#define has_rename 1 /* Does rename() work?  */
+#define bad_a_rename 0 /* Does rename(A,B) fail if A is unwritable?  */
+#define bad_b_rename 0 /* Does rename(A,B) fail if B is unwritable?  */
+#define bad_NFS_rename 0 /* Can rename(A,B) falsely report success?  */
+/* typedef int void; */ /* Some ancient compilers need this.  */
+#define VOID (void) /* 'VOID e;' discards the value of an expression 'e'.  */
+#define has_seteuid 1 /* Does seteuid() work?  See ../INSTALL.RCS.  */
+#define has_setreuid 0 /* Does setreuid() work?  See ../INSTALL.RCS.  */
+#define has_setuid 1 /* Does setuid() exist?  */
+#define has_sigaction 1 /* Does struct sigaction work?  */
+#define has_sa_sigaction 1 /* Does struct sigaction have sa_sigaction?  */
+#define has_signal 1 /* Does signal() work?  */
+#define signal_type void /* type returned by signal handlers */
+#define sig_zaps_handler 0 /* Must a signal handler reinvoke signal()?  */
+/* #define has_sigblock ? */ /* Does sigblock() work?  */
+/* #define sigmask(s) (1 << ((s)-1)) */ /* Yield mask for signal number.  */
+typedef size_t fread_type; /* type returned by fread() and fwrite() */
+typedef size_t freadarg_type; /* type of their size arguments */
+typedef void *malloc_type; /* type returned by malloc() */
+#define has_getcwd 1 /* Does getcwd() work?  */
+/* #define has_getwd ? */ /* Does getwd() work?  */
+#define needs_getabsname 0 /* Must we define getabsname?  */
+#define has_mktemp 1 /* Does mktemp() work?  */
+#define has_NFS 1 /* Might NFS be used?  */
+#define has_psiginfo 0 /* Does psiginfo() work?  */
+#define has_psignal 1 /* Does psignal() work?  */
+/* #define has_si_errno ? */ /* Does siginfo_t have si_errno?  */
+/* #define has_sys_siglist ? */ /* Does sys_siglist[] work?  */
+/* #define strchr index */ /* Use old-fashioned name for strchr()?  */
+/* #define strrchr rindex */ /* Use old-fashioned name for strrchr()?  */
+#define bad_unlink 0 /* Does unlink() fail on unwritable files?  */
+#define has_vfork 1 /* Does vfork() work?  */
+#define has_fork 1 /* Does fork() work?  */
+#define has_spawn 0 /* Does spawn*() work?  */
+#define has_waitpid 1 /* Does waitpid() work?  */
+#define bad_wait_if_SIGCHLD_ignored 1 /* Does ignoring SIGCHLD break wait()?  */
+#define RCS_SHELL "/bin/sh" /* shell to run RCS subprograms */
+#define has_printf_dot 1 /* Does "%.2d" print leading 0?  */
+#define has_vfprintf 1 /* Does vfprintf() work?  */
+#define has_attribute_format_printf 1 /* Does __attribute__((format(printf,N,N+1))) work?  */
+#if has_attribute_format_printf
+#	define printf_string(m, n) __attribute__((format(printf, m, n)))
+#else
+#	define printf_string(m, n)
+#endif
+#if has_attribute_format_printf && has_attribute_noreturn
+	/* Work around a bug in GCC 2.5.x.  */
+#	define printf_string_exiting(m, n) __attribute__((format(printf, m, n), noreturn))
+#else
+#	define printf_string_exiting(m, n) printf_string(m, n) exiting
+#endif
+/* #define has__doprintf ? */ /* Does _doprintf() work?  */
+/* #define has__doprnt ? */ /* Does _doprnt() work?  */
+/* #undef EXIT_FAILURE */ /* Uncomment this if EXIT_FAILURE is broken.  */
+#define large_memory 1 /* Can main memory hold entire RCS files?  */
+#ifndef LONG_MAX
+#define LONG_MAX 2147483647L /* long maximum */
+#endif
+/* Do struct stat s and t describe the same file?  Answer d if unknown.  */
+#define same_file(s,t,d) ((s).st_ino==(t).st_ino && (s).st_dev==(t).st_dev)
+#define has_utimbuf 1 /* Does struct utimbuf work?  */
+#define CO "/usr/local/bin/co" /* name of 'co' program */
+#define COMPAT2 0 /* Are version 2 files supported?  */
+#define DIFF "/usr/bin/diff" /* name of 'diff' program */
+#define DIFF3 "/usr/bin/diff3" /* name of 'diff3' program */
+#define DIFF3_BIN 1 /* Is diff3 user-visible (not the /usr/lib auxiliary)?  */
+#define DIFFFLAGS "-an" /* Make diff output suitable for RCS.  */
+#define DIFF_L 1 /* Does diff -L work?  */
+#define DIFF_SUCCESS 0 /* DIFF status if no differences are found */
+#define DIFF_FAILURE 1 /* DIFF status if differences are found */
+#define DIFF_TROUBLE 2 /* DIFF status if trouble */
+#define ED "/bin/ed" /* name of 'ed' program (used only if !DIFF3_BIN) */
+#define MERGE "/usr/local/bin/merge" /* name of 'merge' program */
+#define TMPDIR "/tmp" /* default directory for temporary files */
+#define SLASH '/' /* principal filename separator */
+#define SLASHes '/' /* `case SLASHes:' labels all filename separators */
+#define isSLASH(c) ((c) == SLASH) /* Is arg a filename separator?  */
+#define ROOTPATH(p) isSLASH((p)[0]) /* Is p an absolute pathname?  */
+#define X_DEFAULT ",v/" /* default value for -x option */
+#define SLASHSLASH_is_SLASH 1 /* Are // and / the same directory?  */
+#define ALL_ABSOLUTE 1 /* Do all subprograms satisfy ROOTPATH?  */
+#define DIFF_ABSOLUTE 1 /* Is ROOTPATH(DIFF) true?  */
+#define SENDMAIL "/usr/sbin/sendmail" /* how to send mail */
+#define TZ_must_be_set 0 /* Must TZ be set for gmtime() to work?  */
+
+
+
+/* Adjust the following declarations as needed.  */
+
+
+/* The rest is for the benefit of non-standard, traditional hosts.  */
+/* Don't bother to declare functions that in traditional hosts do not appear, */
+/* or are declared in .h files, or return int or void.  */
+
+
+/* traditional BSD */
+
+#if has_sys_siglist && !defined(sys_siglist)
+	extern char const * const sys_siglist[];
+#endif
+
+
+/* Posix (ISO/IEC 9945-1: 1990 / IEEE Std 1003.1-1990) */
+
+/* <fcntl.h> */
+#ifdef O_CREAT
+#	define open_can_creat 1
+#else
+#	define open_can_creat 0
+#	define O_RDONLY 0
+#	define O_WRONLY 1
+#	define O_RDWR 2
+#	define O_CREAT 01000
+#	define O_TRUNC 02000
+#endif
+#ifndef O_EXCL
+#define O_EXCL 0
+#endif
+
+/* <sys/stat.h> */
+#ifndef S_IRUSR
+#	ifdef S_IREAD
+#		define S_IRUSR S_IREAD
+#	else
+#		define S_IRUSR 0400
+#	endif
+#	ifdef S_IWRITE
+#		define S_IWUSR S_IWRITE
+#	else
+#		define S_IWUSR (S_IRUSR/2)
+#	endif
+#endif
+#ifndef S_IRGRP
+#	if has_getuid
+#		define S_IRGRP (S_IRUSR / 0010)
+#		define S_IWGRP (S_IWUSR / 0010)
+#		define S_IROTH (S_IRUSR / 0100)
+#		define S_IWOTH (S_IWUSR / 0100)
+#	else
+		/* single user OS -- not Posix or Unix */
+#		define S_IRGRP 0
+#		define S_IWGRP 0
+#		define S_IROTH 0
+#		define S_IWOTH 0
+#	endif
+#endif
+#ifndef S_ISREG
+#define S_ISREG(n) (((n) & S_IFMT) == S_IFREG)
+#endif
+
+/* <sys/wait.h> */
+#ifndef WEXITSTATUS
+#define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8)
+#undef WIFEXITED /* Avoid 4.3BSD incompatibility with Posix.  */
+#endif
+#ifndef WIFEXITED
+#define WIFEXITED(stat_val) (((stat_val)  &  0377) == 0)
+#endif
+#ifndef WTERMSIG
+#define WTERMSIG(stat_val) ((stat_val) & 0177)
+#undef WIFSIGNALED /* Avoid 4.3BSD incompatibility with Posix.  */
+#endif
+#ifndef WIFSIGNALED
+#define WIFSIGNALED(stat_val) ((unsigned)(stat_val) - 1  <  0377)
+#endif
+
+/* <unistd.h> */
+char *getlogin P((void));
+#ifndef STDIN_FILENO
+#	define STDIN_FILENO 0
+#	define STDOUT_FILENO 1
+#	define STDERR_FILENO 2
+#endif
+#if has_fork && !has_vfork
+#	undef vfork
+#	define vfork fork
+#endif
+#if has_getcwd || !has_getwd
+	char *getcwd P((char*,size_t));
+#else
+	char *getwd P((char*));
+#endif
+#if has_setuid && !has_seteuid
+#	undef seteuid
+#	define seteuid setuid
+#endif
+#if has_spawn
+#	if ALL_ABSOLUTE
+#		define spawn_RCS spawnv
+#	else
+#		define spawn_RCS spawnvp
+#	endif
+#else
+#	if ALL_ABSOLUTE
+#		define exec_RCS execv
+#	else
+#		define exec_RCS execvp
+#	endif
+#endif
+
+/* utime.h */
+#if !has_utimbuf
+	struct utimbuf { time_t actime, modtime; };
+#endif
+
+
+/* Standard C library */
+
+/* <stdio.h> */
+#ifndef L_tmpnam
+#define L_tmpnam 32 /* power of 2 > sizeof("/usr/tmp/xxxxxxxxxxxxxxx") */
+#endif
+#ifndef SEEK_SET
+#define SEEK_SET 0
+#endif
+#ifndef SEEK_CUR
+#define SEEK_CUR 1
+#endif
+#if has_mktemp
+	char *mktemp P((char*)); /* traditional */
+#else
+	char *tmpnam P((char*));
+#endif
+
+/* <stdlib.h> */
+char *getenv P((char const*));
+void _exit P((int)) exiting;
+void exit P((int)) exiting;
+malloc_type malloc P((size_t));
+malloc_type realloc P((malloc_type,size_t));
+#ifndef EXIT_FAILURE
+#define EXIT_FAILURE 1
+#endif
+#ifndef EXIT_SUCCESS
+#define EXIT_SUCCESS 0
+#endif
+
+/* <string.h> */
+char *strcpy P((char*,char const*));
+char *strchr P((char const*,int));
+char *strrchr P((char const*,int));
+void *memcpy P((void*,void const*,size_t));
+#if has_memmove
+	void *memmove P((void*,void const*,size_t));
+#endif
+
+/* <time.h> */
+time_t time P((time_t*));
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -153,7 +153,7 @@
 	$(REMOVE) TAGS
 
 #(Unix
-conf.h : conf.sh Makefile
+conf.h :
 	$(REMOVE) a.*
 	ALL_CFLAGS="$(ALL_CFLAGS)" \
 	CC='$(CC)' \
