--- ./libraries/Makefile.optional-openal	2007-11-19 22:45:17.000000000 +0100
+++ ./libraries/Makefile	2007-11-19 22:46:45.000000000 +0100
@@ -71,8 +71,10 @@
 endif
 SUBDIRS += $(wildcard OpenGL)
 SUBDIRS += $(wildcard GLUT)
+ifeq "$(GhcLibsWithOpenAL)" "YES"
 SUBDIRS += $(wildcard OpenAL)
 SUBDIRS += $(wildcard ALUT)
+endif
 SUBDIRS += $(wildcard stm)
 SUBDIRS += $(wildcard xhtml)
 SUBDIRS += $(wildcard cgi)
--- ./configure.ac.optional-openal	2007-11-19 22:39:05.000000000 +0100
+++ ./configure.ac	2007-11-19 22:44:26.000000000 +0100
@@ -806,6 +806,21 @@
 )
 AC_SUBST(GhcLibsWithObjectIO)
 
+dnl ** Enable the building of the OpenAL?
+dnl --------------------------------------------------------------
+AC_ARG_ENABLE(openal,
+[AC_HELP_STRING([--enable-openal],
+[Build OpenAL, a sound library for Haskell. [default=yes]])],
+[ if test x"$enableval" = x"no"; then
+        GhcLibsWithOpenAL=NO
+  else
+        GhcLibsWithOpenAL=YES
+  fi
+],
+[GhcLibsWithOpenAL=YES]
+)
+AC_SUBST(GhcLibsWithOpenAL)
+
 dnl ** .NET interop support?
 dnl --------------------------------------------------------------
 AC_ARG_ENABLE(dotnet,