diff -up radius-engine-0.6/acinclude.m4.lua radius-engine-0.6/acinclude.m4

--- radius-engine-0.6/acinclude.m4.lua	2011-01-03 11:50:24.590542013 -0500

+++ radius-engine-0.6/acinclude.m4	2011-01-03 11:50:30.646542003 -0500

@@ -393,7 +393,7 @@ AC_DEFUN([AM_PATH_LUA],

   LUA_CFLAGS=''

   LUA_LIBS=''

-  PKG_CHECK_MODULES([LUA], [lua5.1], [HAVE_LUA=yes])

+  PKG_CHECK_MODULES([LUA], [lua], [HAVE_LUA=yes])

   AC_LANG_PUSH([C])

   AC_LANG_POP()

diff -up radius-engine-0.6/configure.lua radius-engine-0.6/configure

--- radius-engine-0.6/configure.lua	2010-12-12 14:02:16.000000000 -0500

+++ radius-engine-0.6/configure	2011-01-03 11:46:37.459542002 -0500

@@ -5311,12 +5311,12 @@ if test -n "$PKG_CONFIG"; then

         pkg_cv_LUA_CFLAGS="$LUA_CFLAGS"

     else

         if test -n "$PKG_CONFIG" && \

-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"lua5.1\""; } >&5

-  ($PKG_CONFIG --exists --print-errors "lua5.1") 2>&5

+    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"lua\""; } >&5

+  ($PKG_CONFIG --exists --print-errors "lua") 2>&5

   ac_status=$?

   $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5

   test $ac_status = 0; }; then

-  pkg_cv_LUA_CFLAGS=`$PKG_CONFIG --cflags "lua5.1" 2>/dev/null`

+  pkg_cv_LUA_CFLAGS=`$PKG_CONFIG --cflags "lua" 2>/dev/null`

 else

   pkg_failed=yes

 fi

@@ -5329,12 +5329,12 @@ if test -n "$PKG_CONFIG"; then

         pkg_cv_LUA_LIBS="$LUA_LIBS"

     else

         if test -n "$PKG_CONFIG" && \

-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"lua5.1\""; } >&5

-  ($PKG_CONFIG --exists --print-errors "lua5.1") 2>&5

+    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"lua\""; } >&5

+  ($PKG_CONFIG --exists --print-errors "lua") 2>&5

   ac_status=$?

   $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5

   test $ac_status = 0; }; then

-  pkg_cv_LUA_LIBS=`$PKG_CONFIG --libs "lua5.1" 2>/dev/null`

+  pkg_cv_LUA_LIBS=`$PKG_CONFIG --libs "lua" 2>/dev/null`

 else

   pkg_failed=yes

 fi

@@ -5353,14 +5353,14 @@ else

         _pkg_short_errors_supported=no

 fi

         if test $_pkg_short_errors_supported = yes; then

-	        LUA_PKG_ERRORS=`$PKG_CONFIG --short-errors --errors-to-stdout --print-errors "lua5.1"`

+	        LUA_PKG_ERRORS=`$PKG_CONFIG --short-errors --errors-to-stdout --print-errors "lua"`

         else

-	        LUA_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "lua5.1"`

+	        LUA_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "lua"`

         fi

 	# Put the nasty error message in config.log where it belongs

 	echo "$LUA_PKG_ERRORS" >&5

-	as_fn_error "Package requirements (lua5.1) were not met:

+	as_fn_error "Package requirements (lua) were not met:

 $LUA_PKG_ERRORS