Index: libjava/configure.ac
===================================================================
--- libjava/configure.ac	(revision 199219)
+++ libjava/configure.ac	(working copy)
@@ -1599,10 +1599,10 @@ gcjsubdir=gcj-$gcjversion-$libgcj_sovers
 multi_os_directory=`$CC -print-multi-os-directory`
 case $multi_os_directory in
   .)
-   dbexecdir='$(libdir)/'$gcjsubdir # Avoid /.
+   dbexecdir='$(toolexeclibdir)/'$gcjsubdir # Avoid /.
    ;;
   *)
-   dbexecdir='$(libdir)/'$multi_os_directory/$gcjsubdir
+   dbexecdir='$(toolexeclibdir)/'$multi_os_directory/$gcjsubdir
    ;;
 esac
 AC_SUBST(dbexecdir)
Index: libjava/Makefile.am
===================================================================
--- libjava/Makefile.am	(revision 199219)
+++ libjava/Makefile.am	(working copy)
@@ -221,7 +221,7 @@ endif
 
 dbexec_LTLIBRARIES = libjvm.la
 
-pkgconfigdir = $(libdir)/pkgconfig
+pkgconfigdir = $(toolexeclibdir)/pkgconfig
 
 jardir = $(datadir)/java
 jar_DATA = libgcj-$(gcc_version).jar libgcj-tools-$(gcc_version).jar
Index: libjava/classpath/configure.ac
===================================================================
--- libjava/classpath/configure.ac	(revision 199219)
+++ libjava/classpath/configure.ac	(working copy)
@@ -317,6 +317,26 @@ dnl defined to the same value for all mu
 dnl so that we can refer to the multilib installation directories from
 dnl classpath's build files.
 dnl -----------------------------------------------------------
+case ${host_alias} in
+  "") host_noncanonical=${build_noncanonical} ;;
+  *) host_noncanonical=${host_alias} ;;
+esac
+case ${target_alias} in
+  "") target_noncanonical=${host_noncanonical} ;;
+  *) target_noncanonical=${target_alias} ;;
+esac
+AC_SUBST(target_noncanonical)
+
+AC_ARG_ENABLE(version-specific-runtime-libs,
+  AS_HELP_STRING([--enable-version-specific-runtime-libs],    
+                 [specify that runtime libraries should be installed in a compiler-specific directory]),
+    [case "$enableval" in
+      yes) version_specific_libs=yes ;;
+      no)  version_specific_libs=no ;;
+      *)   AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
+     esac],
+    [version_specific_libs=no]
+)
 CLASSPATH_TOOLEXECLIBDIR
 
 dnl -----------------------------------------------------------
Index: libjava/classpath/m4/acinclude.m4
===================================================================
--- libjava/classpath/m4/acinclude.m4	(revision 199219)
+++ libjava/classpath/m4/acinclude.m4	(working copy)
@@ -249,11 +249,35 @@ dnl GCJ LOCAL: Calculate toolexeclibdir
 dnl -----------------------------------------------------------
 AC_DEFUN([CLASSPATH_TOOLEXECLIBDIR],
 [
-  multi_os_directory=`$CC -print-multi-os-directory`
-  case $multi_os_directory in
-    .) toolexeclibdir=${libdir} ;; # Avoid trailing /.
-    *) toolexeclibdir=${libdir}/${multi_os_directory} ;;
+  case ${version_specific_libs} in
+    yes)
+      # Need the gcc compiler version to know where to install libraries
+      # and header files if --enable-version-specific-runtime-libs option
+      # is selected.
+      includedir='$(libdir)/gcc/$(target_noncanonical)/$(gcc_version)/include/'
+      toolexecdir='$(libdir)/gcc/$(target_noncanonical)'
+      toolexecmainlibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
+      toolexeclibdir=$toolexecmainlibdir
+      ;;
+    no)
+      if test -n "$with_cross_host" &&
+         test x"$with_cross_host" != x"no"; then
+        # Install a library built with a cross compiler in tooldir, not libdir.
+        toolexecdir='$(exec_prefix)/$(target_noncanonical)'
+        toolexecmainlibdir='$(toolexecdir)/lib'
+      else
+        toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)'
+        toolexecmainlibdir='$(libdir)'
+      fi
+      multi_os_directory=`$CC -print-multi-os-directory`
+      case $multi_os_directory in
+        .) toolexeclibdir=$toolexecmainlibdir ;; # Avoid trailing /.
+        *) toolexeclibdir=$toolexecmainlibdir/$multi_os_directory ;;
+      esac
+      ;;
   esac
+  AC_SUBST(toolexecdir)
+  AC_SUBST(toolexecmainlibdir)
   AC_SUBST(toolexeclibdir)
 ])