diff -r 073d351bdcd3 -r a4e30d311569 config/libc/eglibc.in
--- a/config/libc/eglibc.in	Sun Sep 13 18:38:06 2009 +0200
+++ b/config/libc/eglibc.in	Fri Oct 09 16:22:09 2009 +0200
@@ -90,3 +90,55 @@
       
       Note that crosstool-NG will *not* update your working copy, you will
       have to do that yourself.
+
+config EGLIBC_CUSTOM_CONFIG
+    bool
+    prompt "Use custom configuration file"
+    default n
+    help
+      Use a custom configuration file to disable some features in the eglibc
+      library. The configuration file options are described in detail in the
+      option-groups.def file in the eglibc source directory.
+
+if EGLIBC_CUSTOM_CONFIG
+    config EGLIBC_OPTION_GROUPS_FILE
+        string
+        prompt "Path to the option-groups configuration file"
+        default ""
+        help
+          Path to the option groups configuration file.
+
+    config EGLIBC_BUNDLED_NSS_CONFIG
+        bool
+        prompt "Use bundled NSS config file"
+        default y
+        help
+          Use minimal nsswitch configuration file bundled in eglibc.
+          This option is only meaningful when runtime nss configuration
+          is disabled in the option groups file.
+
+    config EGLIBC_NSS_CONFIG_FILE
+        string
+        prompt "Path to the NSS config file"
+        default ""
+        depends on !EGLIBC_BUNDLED_NSS_CONFIG
+        help
+          Path to the nsswitch configuration file
+
+    config EGLIBC_BUNDLED_NSS_FUNCTIONS
+        bool
+        prompt "Use bundled NSS functions file"
+        default y
+        help
+          Use minimal nsswitch functions file bundled in eglibc.
+          This option is only meaningful when runtime nss configuration
+          is disabled in the option groups file.
+
+    config EGLIBC_NSS_FUNCTIONS_FILE
+        string
+        prompt "Path to the NSS functions file"
+        default ""
+        depends on !EGLIBC_BUNDLED_NSS_FUNCTIONS
+        help
+          Path to the nsswitch functions file
+endif