dnl Process this file with autoconf to produce a configure script.
AC_INIT(auth-krb4.c)

AC_CONFIG_HEADER(config.h)

dnl Checks for programs.
AC_PROG_CC
AC_PROG_RANLIB

dnl Checks for libraries.
dnl Replace `main' with a function in -lcrypto:
AC_CHECK_LIB(crypto, CRYPTO_lock, ,AC_MSG_ERROR([*** libcrypto missing - please install first ***]))
dnl Replace `main' with a function in -lutil:
AC_CHECK_LIB(util, logout, ,AC_MSG_ERROR([*** -lutil missing - this is part of libc. ***]))
dnl Replace `main' with a function in -lz:
AC_CHECK_LIB(z, deflate, ,AC_MSG_ERROR([*** zlib missing - please install first ***]))
dnl check for nsl
AC_CHECK_LIB(nsl, yp_match, , )
dnl check for pwdb
AC_CHECK_LIB(pwdb, pwdb_new, , )
dnl check for dl
AC_CHECK_LIB(dl, dlopen, ,AC_MSG_ERROR([*** libdl missing - please install first ***]))
dnl check for pam
AC_CHECK_LIB(pam, pam_authenticate, ,AC_MSG_ERROR([*** PAM missing - please install first ***]))

dnl Check for stuff in path.
AC_CHECK_PROG(AR, ar, ar)
AC_CHECK_PROG(RANLIB, ranlib, ranlib)

dnl Check for ssl headers
AC_CHECK_HEADER(openssl/bn.h, [AC_DEFINE(HAVE_OPENSSL)], [AC_CHECK_HEADER(ssl/bn.h, [AC_DEFINE(HAVE_SSL)], [AC_MSG_ERROR([*** ssl library missing - please install first ***])])])

dnl Checks for header files.
AC_HEADER_DIRENT
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS(fcntl.h paths.h sys/ioctl.h sys/time.h syslog.h unistd.h)

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_TYPE_UID_T
AC_C_INLINE
AC_TYPE_MODE_T
AC_TYPE_OFF_T
AC_TYPE_SIZE_T
AC_STRUCT_ST_BLKSIZE
AC_HEADER_TIME

dnl Checks for library functions.
AC_PROG_GCC_TRADITIONAL
AC_FUNC_MEMCMP
AC_TYPE_SIGNAL
AC_FUNC_UTIME_NULL
AC_FUNC_VPRINTF
AC_CHECK_FUNCS(gethostname gettimeofday mkdir rmdir select socket strerror strspn strtol strlcpy mkdtemp arc4random setproctitle)

AC_OUTPUT(Makefile)