AC_PATH_PROG(SENDMAIL, sendmail, /usr/sbin/sendmail, $PATH:$ac_aux_path_sendmail)
AC_DEFINE_UNQUOTED(SENDMAIL,"$ac_cv_path_SENDMAIL",[ Where to find sendmail on your system. ])
-dnl ---------------- gpgme ----------------
+dnl ---------------- lua5.1 ----------------
PKG_CHECK_MODULES(LUA,lua5.1,[
CPPFLAGS="$CPPFLAGS $LUA_CFLAGS"
LDFLAGS="$LDFLAGS $LUA_LIBS"