--- configure.ac
+++ configure.ac
@@ -15,6 +15,8 @@
 
 dnl Configure options.
 AC_ARG_ENABLE(opengl, [  --enable-opengl         use OpenGL for rendering [default=yes]], , enable_opengl=yes)
+AC_ARG_ENABLE(lua, , , enable_lua=yes)
+AC_ARG_ENABLE(speex, , , enable_speex=yes)
 
 dnl Checks for programs.
 AC_PROG_CC
@@ -98,6 +100,7 @@
   ])
 ])	    
 
+if [[ "x$enable_lua" = "xyes" ]]; then
 dnl Check for Lua.
 AC_ARG_VAR(LUA_CFLAGS,    [C compiler flags for Lua])
 AC_ARG_VAR(LUA_LIBS,      [linker flags for Lua])
@@ -124,14 +127,18 @@
   AC_DEFINE(HAVE_LUA_H, 1, [Assuming <lua.h> is present])
   AC_DEFINE(HAVE_LUALIB_H, 1, [Assuing <lualib.h> is present])
 fi
+fi
 
+if [[ "x$enable_speex" = "xyes" ]]; then
 dnl Check for Speex
+CPPFLAGS="$CPPFLAGS -I/usr/include/speex"
 AC_CHECK_HEADERS(speex.h, [
   AC_CHECK_LIB(speex, speex_decoder_init, [
     LIBS="-lspeex $LIBS"
     AC_DEFINE(SPEEX, 1, [Speex support is enabled])
   ])
 ])
+fi
 
 dnl Figure out which OpenGL library to use
 case "$target" in