diff -u grub-0.94/INSTALL grub-0.94-reiser4/INSTALL
--- grub-0.94/INSTALL	2003-10-19 19:15:45.000000000 +0200
+++ grub-0.94-reiser4/INSTALL	2004-04-11 18:38:35.270274979 +0200
@@ -207,6 +207,9 @@
 `--disable-reiserfs'
      Omit the ReiserFS support in Stage 2.
 
+`--disable-reiser4'
+     Omit the Reiser4 support in Stage 2.
+
 `--disable-vstafs'
      Omit the VSTa filesystem support in Stage 2.
 
diff -u grub-0.94/config.h.in grub-0.94-reiser4/config.h.in
--- grub-0.94/config.h.in	2003-10-19 19:27:16.000000000 +0200
+++ grub-0.94-reiser4/config.h.in	2004-04-11 18:38:35.167298053 +0200
@@ -50,6 +50,12 @@
 /* Define to 1 if you have the <inttypes.h> header file. */
 #undef HAVE_INTTYPES_H
 
+/* Define to 1 if you have the `aal-alone' library (-laal-alone). */
+#undef HAVE_LIBAAL_ALONE
+
+/* Define to 1 if you have the `reiser4-alone' library (-lreiser4-alone). */
+#undef HAVE_LIBREISER4_ALONE
+
 /* Define to 1 if you have the <memory.h> header file. */
 #undef HAVE_MEMORY_H
 
diff -u grub-0.94/configure.ac grub-0.94-reiser4/configure.ac
--- grub-0.94/configure.ac	2004-04-11 19:05:34.555429539 +0200
+++ grub-0.94-reiser4/configure.ac	2004-04-11 18:38:35.216287076 +0200
@@ -241,6 +241,77 @@
   FSYS_CFLAGS="$FSYS_CFLAGS -DFSYS_REISERFS=1"
 fi
 
+dnl Checking for reiser4
+REISER4_LIBS=""
+REISER4_CFLAGS=""
+
+OLD_LIBS=$LIBS
+OLD_CFLAGS=$CFLAGS
+LIBS=""
+CFLAGS=""
+
+AC_ARG_ENABLE(reiser4,
+  [  --disable-reiser4       disable Reiser4 support in Stage 2])
+
+enable_reiser4_support=yes
+ 
+AC_CHECK_LIB(aal-alone, aal_mem_init, , 
+  AC_MSG_WARN(
+Reiser4 support is disabled due to inability find libaal-alone with 
+memory manager support turned on.)
+  enable_reiser4_support=no
+)
+
+if test x"$enable_reiser4_support" != xno; then
+  AC_CHECK_HEADER(aal/libaal.h, ,
+  AC_MSG_WARN(
+Libaal header files are not found. Reiser4 support is disabled
+  )
+  enable_reiser4_support=no)
+fi
+  
+if test x"$enable_reiser4_support" != xno; then
+  AC_CHECK_LIB(reiser4-alone, reiser4_fs_open, , 
+  AC_MSG_WARN(
+Reiser4 support is disabled due to inability find valid libreiser4-alone.)
+    enable_reiser4_support=no, 
+    -laal-alone
+  )
+fi
+
+if test x"$enable_reiser4_support" != xno; then
+  AC_CHECK_HEADER(reiser4/libreiser4.h, ,
+  AC_MSG_WARN(
+Reiser4 header files are not found. Reiser4 support is disabled.
+  )
+  enable_reiser4_support=no)
+fi
+
+if test x"$enable_reiser4_support" != xno; then
+  REISER4_CFLAGS="$REISER4_CFLAGS -DFSYS_REISER4=1"
+  REISER4_LIBS=$LIBS
+fi
+
+if test x"$enable_reiser4_support" != xno; then
+  AC_CHECK_LIB(reiser4-alone, __sym40_plug_init, 
+    REISER4_CFLAGS="$REISER4_CFLAGS -DENABLE_SYMLINKS=1",
+AC_MSG_WARN(Reiser4 symlinks support is disabled.), 
+    -laal-alone
+  )
+fi
+
+LIBS=$OLD_LIBS
+CFLAGS=$OLD_CFLAGS
+
+if test x"$enable_reiser4" != xno; then
+  (test x"$enable_reiser4_support" != xno) &&
+    FSYS_CFLAGS="$FSYS_CFLAGS $REISER4_CFLAGS"
+fi
+
+AC_SUBST(REISER4_LIBS)
+AC_SUBST(REISER4_CFLAGS)
+AM_CONDITIONAL(ENABLE_REISER4_SUPPORT, test x"$enable_reiser4_support" != xno)
+
 AC_ARG_ENABLE(vstafs,
   [  --disable-vstafs        disable VSTa FS support in Stage 2])