Index: configure.in.in
===================================================================
--- configure.in.in	(révision 29269)
+++ configure.in.in	(copie de travail)
@@ -289,6 +289,17 @@
     AC_MSG_RESULT([no])
   ])
 
+  dnl Ignore strict aliasing errors (bug #4832)
+  save_CFLAGS="$CFLAGS"
+  CFLAGS="$CFLAGS -Wno-error=strict-aliasing"
+  AC_MSG_CHECKING([whether $CC accepts -Wno-error=strict-aliasing])
+  AC_COMPILE_IFELSE(AC_LANG_SOURCE([int x;]), [
+    AC_MSG_RESULT([yes])
+  ], [
+    CFLAGS="$save_CFLAGS"
+    AC_MSG_RESULT([no])
+  ])
+
   dnl Paranoia for --enable-debug=full
   if test x"$enable_debug" = x"full"; then
     dnl Enable extensive debugging