diff -r 6ee673ab382e -r a4e30d311569 scripts/build/libc/eglibc.sh
--- a/scripts/build/libc/eglibc.sh	Fri Oct 02 22:10:17 2009 +0200
+++ b/scripts/build/libc/eglibc.sh	Fri Oct 09 16:22:09 2009 +0200
@@ -122,9 +122,50 @@
     return 0
 }
 
-# There is nothing to do for eglibc check config
+# Copy user provided eglibc configuration file if provided
 do_libc_check_config() {
-    :
+    if [ "${CT_EGLIBC_CUSTOM_CONFIG}" != "y" ]; then
+        return 0
+    fi
+
+    CT_DoStep INFO "Checking C library configuration"
+
+    CT_TestOrAbort "You did not provide an eglibc config file!" \
+        -n "${CT_EGLIBC_OPTION_GROUPS_FILE}" -a \
+        -f "${CT_EGLIBC_OPTION_GROUPS_FILE}"
+
+    CT_DoExecLog ALL cp "${CT_EGLIBC_OPTION_GROUPS_FILE}" "${CT_CONFIG_DIR}/eglibc.config"
+
+    # NSS configuration
+    if grep -E '^OPTION_EGLIBC_NSSWITCH[[:space:]]*=[[:space:]]*n' "${CT_EGLIBC_OPTION_GROUPS_FILE}" >/dev/null 2>&1; then
+        CT_DoLog DEBUG "Using fixed-configuration nsswitch facility"
+
+        if [ "${CT_EGLIBC_BUNDLED_NSS_CONFIG}" = "y" ]; then
+            nss_config="${CT_SRC_DIR}/eglibc-${CT_LIBC_VERSION}/nss/fixed-nsswitch.conf"
+        else
+            nss_config="${CT_EGLIBC_NSS_CONFIG_FILE}"
+        fi
+        CT_TestOrAbort "NSS config file not found!" -n "${nss_config}" -a -f "${nss_config}"
+
+        CT_DoExecLog ALL cp "${nss_config}" "${CT_CONFIG_DIR}/nsswitch.config"
+        echo "OPTION_EGLIBC_NSSWITCH_FIXED_CONFIG = ${CT_CONFIG_DIR}/nsswitch.config" \
+            >> "${CT_CONFIG_DIR}/eglibc.config"
+
+        if [ "${CT_EGLIBC_BUNDLED_NSS_FUNCTIONS}" = "y" ]; then
+            nss_functions="${CT_SRC_DIR}/eglibc-${CT_LIBC_VERSION}/nss/fixed-nsswitch.functions"
+        else
+            nss_functions="${CT_EGLIBC_NSS_FUNCTIONS_FILE}"
+        fi
+        CT_TestOrAbort "NSS functions file not found!" -n "${nss_functions}" -a -f "${nss_functions}"
+
+        CT_DoExecLog ALL cp "${nss_functions}" "${CT_CONFIG_DIR}/nsswitch.functions"
+        echo "OPTION_EGLIBC_NSSWITCH_FIXED_FUNCTIONS = ${CT_CONFIG_DIR}/nsswitch.functions" \
+            >> "${CT_CONFIG_DIR}/eglibc.config"
+    else
+        CT_DoLog DEBUG "Using full-blown nsswitch facility"
+    fi
+
+    CT_EndStep
 }
 
 # This function installs the eglibc headers needed to build the core compiler
@@ -143,6 +184,10 @@
 
     CT_DoLog EXTRA "Configuring C library"
 
+    if [ "${CT_EGLIBC_CUSTOM_CONFIG}" = "y" ]; then
+        CT_DoExecLog ALL cp "${CT_CONFIG_DIR}/eglibc.config" option-groups.config
+    fi
+
     cross_cc=$(CT_Which "${CT_TARGET}-gcc")
     cross_cxx=$(CT_Which "${CT_TARGET}-g++")
     cross_ar=$(CT_Which "${CT_TARGET}-ar")
@@ -210,6 +255,10 @@
 
     CT_DoLog EXTRA "Configuring C library"
 
+    if [ "${CT_EGLIBC_CUSTOM_CONFIG}" = "y" ]; then
+        CT_DoExecLog ALL cp "${CT_CONFIG_DIR}/eglibc.config" option-groups.config
+    fi
+
     # Add some default glibc config options if not given by user.
     # We don't need to be conditional on wether the user did set different
     # values, as they CT_LIBC_GLIBC_EXTRA_CONFIG is passed after extra_config