From: "P. J. McDermott" <pjm@nac.net>
Description: Fix sysdeps preconfigure fragments on BusyBox ash
 On shells that don't support the LINENO parameter (e.g. BusyBox ash), the
 AS_LINENO_PREPARE macro (executed by AC_INIT) preprocesses the script
 $as_myself into $as_me.lineno.
 .
 Unfortunately, when loading sysdeps preconfigure fragements, these as_*
 parameters refer to the configure script rather than the fragments.
 .
 As a result, the configure script is executed by a preconfigure fragment in an
 infinitely recursive loop.
 .
 This patch temporarily changes the parameters to refer to the fragments,
 allowing the fragments to be properly preprocessed and breaking the loop.

diff -Naur src.orig/libc/aclocal.m4 src/libc/aclocal.m4
--- src.orig/libc/aclocal.m4	2012-12-02 16:11:45.000000000 -0500
+++ src/libc/aclocal.m4	2013-06-20 12:19:51.818414209 -0400
@@ -161,7 +161,14 @@
   for frag in $frags; do
     name=`echo "$frag" | sed 's@/[[^/]]*[$]@@;s@^.*/@@'`
     echo $ECHO_N "$name $ECHO_C" >&AS_MESSAGE_FD
+    orig_as_me=$as_me
+    orig_as_myself=$as_myself
+    as_me=${frag##*/sysdeps/}
+    as_me=${as_me%/preconfigure}-preconfigure
+    as_myself=$frag
     . "$frag"
+    as_me=$orig_as_me
+    as_myself=$orig_as_myself
   done
   AC_MSG_RESULT()
 fi])
diff -Naur src.orig/libc/configure src/libc/configure
--- src.orig/libc/configure	2012-12-02 16:11:45.000000000 -0500
+++ src/libc/configure	2013-06-20 12:24:26.226678382 -0400
@@ -4000,7 +4000,14 @@
   for frag in $frags; do
     name=`echo "$frag" | sed 's@/[^/]*$@@;s@^.*/@@'`
     echo $ECHO_N "$name $ECHO_C" >&6
+    orig_as_me=$as_me
+    orig_as_myself=$as_myself
+    as_me=${frag##*/sysdeps/}
+    as_me=${as_me%/preconfigure}-preconfigure
+    as_myself=$frag
     . "$frag"
+    as_me=$orig_as_me
+    as_myself=$orig_as_myself
   done
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: " >&5
 $as_echo "" >&6; }