diff --git a/acinclude.m4 b/acinclude.m4
index 1f0611207..2c64e7fc1 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -104,146 +104,6 @@ fi
 ])
 
 
-dnl   QTHREADS_CONFIGURE configures the QuickThreads package.  The QT
-dnl   sources should be in $srcdir/qt.  If configuration succeeds, this
-dnl   macro creates the appropriate symlinks in the qt object directory,
-dnl   and sets the following variables, used in building libqthreads.a:
-dnl      QTHREAD_LTLIBS --- set to libqthreads.la if configuration
-dnl         succeeds, or the empty string if configuration fails.
-dnl      qtmd_h, qtmds_s, qtmdc_c, qtdmdb_s --- the names of the machine-
-dnl         dependent source files.
-dnl      qthread_asflags --- flags to pass to the compiler when processing
-dnl         assembly-language files.
-dnl
-dnl   It also sets the following variables, which describe how clients
-dnl   can link against libqthreads.a:
-dnl      THREAD_PACKAGE --- set to "QT" if configuration succeeds, or
-dnl         the empty string if configuration fails.
-dnl	 THREAD_CPPFLAGS --- set to `-I' flags for thread header files
-dnl	 THREAD_LIBS_LOCAL --- linker options for use in this source tree
-dnl	 THREAD_LIBS_INSTALLED --- linker options for use after this package
-dnl	    is installed
-dnl   It would be nice if all thread configuration packages for Guile
-dnl   followed the same conventions.
-dnl
-dnl   All of the above variables will be substituted into Makefiles in
-dnl   the usual autoconf fashion.
-dnl
-dnl   We distinguish between THREAD_LIBS_LOCAL and
-dnl   THREAD_LIBS_INSTALLED because the thread library might be in
-dnl   this tree, and be built using libtool.  This means that:
-dnl	 1) when building other executables in this tree, one must
-dnl	    pass the relative path to the ../libfoo.la file, but 
-dnl	 2) once the whole package has been installed, users should
-dnl	    link using -lfoo. 
-dnl   Normally, we only care about the first case, but since the
-dnl   guile-config script needs to give users all the flags they need
-dnl   to link programs against guile, the GUILE_WITH_THREADS macro
-dnl   needs to supply the second piece of information as well.
-dnl
-dnl   This whole thing is a little confused about what ought to be
-dnl   done in the top-level configure script, and what ought to be
-dnl   taken care of in the subdirectory.  For example, qtmds_s and
-dnl   friends really ought not to be even mentioned in the top-level
-dnl   configure script, but here they are.
-
-AC_DEFUN([QTHREADS_CONFIGURE],[
-  AC_REQUIRE([AC_PROG_LN_S])
-
-  AC_MSG_CHECKING(QuickThreads configuration)
-  # How can we refer to the qt source directory from within the qt build
-  # directory?  For headers, we can rely on the fact that the qt src
-  # directory appears in the #include path.
-  qtsrcdir="`(cd $srcdir; pwd)`/qt"
-
-  changequote(,)dnl We use [ and ] in a regexp in the case
-
-  THREAD_PACKAGE=QT
-  qthread_asflags=''
-  case "$host" in
-    i[3456]86-*-*)
-      port_name=i386
-      qtmd_h=md/i386.h
-      qtmds_s=md/i386.s
-      qtmdc_c=md/null.c 
-      qtdmdb_s=
-      case "$host" in
-        *-*-netbsd* )
-          ## NetBSD needs to be told to pass the assembly code through
-          ## the C preprocessor.  Other GCC installations seem to do
-          ## this by default, but NetBSD's doesn't.  We could get the
-          ## same effect by giving the file a name ending with .S
-          ## instead of .s, but I don't see how to tell automake to do
-          ## that.
-          qthread_asflags='-x assembler-with-cpp'
-        ;;
-      esac
-      ;;
-    mips-sgi-irix[56]*)
-      port_name=irix
-      qtmd_h=md/mips.h
-      qtmds_s=md/mips-irix5.s
-      qtmdc_c=md/null.c
-      qtdmdb_s=md/mips_b.s 
-      ;;
-    mips-*-*)
-      port_name=mips
-      qtmd_h=md/mips.h
-      qtmds_s=md/mips.s
-      qtmdc_c=md/null.c
-      qtdmdb_s=md/mips_b.s 
-      ;;
-    sparc-*-sunos*)
-      port_name=sparc-sunos
-      qtmd_h=md/sparc.h
-      qtmds_s=md/_sparc.s
-      qtmdc_c=md/null.c
-      qtdmdb_s=md/_sparc_b.s 
-      ;;
-    sparc-*-*)
-      port_name=sparc
-      qtmd_h=md/sparc.h
-      qtmds_s=md/sparc.s
-      qtmdc_c=md/null.c
-      qtdmdb_s=md/sparc_b.s 
-      ;;
-    alpha*-*-*)
-      port_name=alpha
-      qtmd_h=md/axp.h
-      qtmds_s=md/axp.s
-      qtmdc_c=md/null.c
-      qtdmdb_s=md/axp_b.s 
-      ;;
-    *)
-      echo "Unknown configuration; threads package disabled"
-      THREAD_PACKAGE=""
-      ;;
-  esac
-  changequote([, ])
-
-  # Did configuration succeed?
-  if test -n "$THREAD_PACKAGE"; then
-    AC_MSG_RESULT($port_name)
-    QTHREAD_LTLIBS=libqthreads.la
-    THREAD_CPPFLAGS="-I$qtsrcdir -I../qt"
-    THREAD_LIBS_LOCAL="../qt/libqthreads.la"
-    THREAD_LIBS_INSTALLED="-lqthreads"
-  else
-    AC_MSG_RESULT(none; disabled)
-  fi
-
-  AC_SUBST(QTHREAD_LTLIBS)
-  AC_SUBST(qtmd_h)
-  AC_SUBST(qtmds_s)
-  AC_SUBST(qtmdc_c)
-  AC_SUBST(qtdmdb_s)
-  AC_SUBST(qthread_asflags)
-  AC_SUBST(THREAD_PACKAGE)
-  AC_SUBST(THREAD_CPPFLAGS)
-  AC_SUBST(THREAD_LIBS_LOCAL)
-  AC_SUBST(THREAD_LIBS_INSTALLED)
-])
-
 ## libtool.m4 - Configure libtool for the target system. -*-Shell-script-*-
 ## Copyright (C) 1996-1999 Free Software Foundation, Inc.
 ## Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996