AC_PREREQ([2.53])
AC_INIT(rlm_unix.c)
AC_REVISION($Revision$)
AC_DEFUN(modname,[rlm_unix])

if test x$with_[]modname != xno; then

	AC_PROG_CC
	AC_PROG_CPP

	AC_MSG_CHECKING(for system password file)
	if test -f /etc/passwd; then
		AC_MSG_RESULT(/etc/passwd)
	else
		AC_MSG_RESULT(no /etc/passwd file.)
		[ fail=$fail" /etc/passwd" ],
	fi

	dnl useless?
	AC_MSG_CHECKING(for system shadow password file)
	if test -f /etc/shadow; then
		AC_MSG_RESULT(/etc/shadow)
	else
		AC_MSG_RESULT(no /etc/shadow file.)
	fi

	AC_CHECK_FUNC(crypt, 
		[ cryptlocation=libc ],
		[
			#crypt not in libc
			AC_CHECK_LIB(crypt, crypt, 
				[ 
					cryptlocation=libcrypt 
					unix_ldflags="${unix_ldflags} -lcrypt"
				]
			)
		]
	)
	if test x$cryptlocation = x; then
		[ fail=$fail" crypt()" ],
	fi

	AC_CHECK_HEADERS(crypt.h shadow.h)
	AC_CHECK_FUNCS(getspnam getusershell)

	AC_CHECK_LIB(shadow, getspnam, 
		[ 
			unix_ldflags="${unix_ldflags} -lshadow"
			AC_DEFINE(HAVE_GETSPNAM) 
		]
	)

	AC_CHECK_FUNCS(fgetpwent fgetspent fgetgrent)

	targetname=modname
else
	targetname=
	echo \*\*\* module modname is disabled.
fi

if test x"$fail" != x""; then
	if test x"${enable_strict_dependencies}" = x"yes"; then
		AC_MSG_ERROR([set --without-]modname[ to disable it explicitly.])
	else
		AC_MSG_WARN([silently not building ]modname[.])
		AC_MSG_WARN([FAILURE: ]modname[ requires: $fail.]); 
		targetname=""
	fi
fi

AC_SUBST(unix_ldflags)
AC_SUBST(unix_cflags)
AC_SUBST(targetname)
AC_CONFIG_HEADER(config.h)
AC_OUTPUT(Makefile)