diff -r 45ef0b0660a5 -r a52574521bea config/libc/glibc-eglibc.in-common
--- a/config/libc/glibc-eglibc.in-common	Fri Jul 29 13:25:57 2011 +0200
+++ b/config/libc/glibc-eglibc.in-common	Thu Aug 18 16:05:48 2011 +0200
@@ -151,6 +151,15 @@
       Whether to build and install the libc locale files for the target,
       which is required in order to support internationalization.
 
+if LIBC_glibc && LIBC_LOCALES
+comment "WARNING!                                                     "
+comment "|  The built locales will be usable if and only if the build  "
+comment "|  machine and the target:                                    "
+comment "|   - have the same endianness,                               "
+comment "|   - and have the same alignment requirements for uint32_t.  "
+comment "|  You will have to check by yourself (for now).              "
+endif # LIBC_glibc && LIBC_LOCALES
+
 if KERNEL_linux
 
 choice LIBC_GLIBC_SUPPORTED_KERNEL