diff --git a/configure.ac b/configure.ac
index bdd1dd2..a299785 100755
--- a/configure.ac
+++ b/configure.ac
@@ -116,6 +116,7 @@
 have_libs=yes
 if test "$enable_libs" = "no"; then
   have_libs="no"
+  with_as3="no"
   with_cpp="no"
   with_c_glib="no"
   with_cl="no"
@@ -141,6 +142,18 @@
   with_swift="no"
 fi
 
+AX_THRIFT_LIB(as3, [as3], yes)
+have_as3=no
+if test "$with_as3" = "yes"; then
+  if test "${FLEX_HOME+set}" = set; then 
+    AC_PATH_PROGS([FLEX_COMPC], [compc], "fail", [$PATH$PATH_SEPARATOR$FLEX_HOME/bin])
+    if test "$FLEX_COMPC" != "fail"; then
+      have_as3="yes"
+    fi
+  fi
+fi
+AM_CONDITIONAL(WITH_AS3, [test "$have_as3" = "yes"])
+
 AX_THRIFT_LIB(cpp, [C++], yes)
 have_cpp=no
 if test "$with_cpp" = "yes";  then
@@ -187,6 +200,7 @@
   PKG_CHECK_MODULES([GLIB], [glib-2.0 >= 2.0], have_glib2=yes, have_glib2=no)
   PKG_CHECK_MODULES([GOBJECT], [gobject-2.0 >= 2.0], have_gobject2=yes, have_gobject2=no)
   if test "$have_glib2" = "yes" -a "$have_gobject2" = "yes" ; then
+    AC_PATH_PROG([GSETTINGS], [gsettings])
     have_c_glib="yes"
   fi
 fi
@@ -793,6 +807,7 @@
   compiler/cpp/test/Makefile
   compiler/cpp/src/thrift/version.h
   lib/Makefile
+  lib/as3/Makefile
   lib/cl/Makefile
   lib/cpp/Makefile
   lib/cpp/test/Makefile
@@ -874,6 +889,8 @@
   tutorial/rs/Makefile
 ])
 
+if test "$have_as3" = "yes" ; then MAYBE_AS3="as3" ; else MAYBE_AS3="" ; fi
+AC_SUBST([MAYBE_AS3])
 if test "$have_cpp" = "yes" ; then MAYBE_CPP="cpp" ; else MAYBE_CPP="" ; fi
 AC_SUBST([MAYBE_CPP])
 if test "$have_c_glib" = "yes" ; then MAYBE_C_GLIB="c_glib" ; else MAYBE_C_GLIB="" ; fi
@@ -923,6 +940,7 @@
 echo
 echo "$PACKAGE $VERSION"
 echo
+echo "Building ActionScript3 Library : $have_as3"
 echo "Building C (GLib) Library .... : $have_c_glib"
 echo "Building C# (Mono) Library ... : $have_csharp"
 echo "Building C++ Library ......... : $have_cpp"
@@ -946,6 +964,17 @@
 echo "Building Rust Library ........ : $have_rs"
 echo "Building Swift Library ....... : $have_swift"
 
+if test "$have_as3" = "yes" ; then
+  echo
+  echo "ActionScript Library:"
+  echo "   FLEX_HOME ................. : $FLEX_HOME"
+  echo "   Using compc version ....... : $($FLEX_COMPC --version)"
+fi
+if test "$have_c_glib" = "yes" ; then
+  echo
+  echo "C (glib):"
+  echo "   Using glib version ........ : $($GSETTINGS --version)"
+fi
 if test "$have_csharp" = "yes" ; then
   echo
   echo "C# Library:"