Original patch from: gentoo/src/patchsets/glibc/2.9/5070_all_glibc-2.7-cross-compile-nptl.patch

-= BEGIN original header =-

A little hack for cross-compiling NPTL

http://sourceware.org/ml/libc-alpha/2005-02/msg00043.html

-= END original header =-

diff -durN glibc-2_9.orig/nptl/sysdeps/pthread/configure glibc-2_9/nptl/sysdeps/pthread/configure

--- glibc-2_9.orig/nptl/sysdeps/pthread/configure	2007-10-17 00:24:30.000000000 +0200

+++ glibc-2_9/nptl/sysdeps/pthread/configure	2009-02-02 22:01:28.000000000 +0100

@@ -78,6 +78,10 @@

 fi

 { echo "$as_me:$LINENO: result: $libc_cv_forced_unwind" >&5

 echo "${ECHO_T}$libc_cv_forced_unwind" >&6; }

+if test $libc_cv_forced_unwind = no -a $build_cpu != $host_cpu; then

+  echo "$as_me:$LINENO: forcing libc_cv_forced_unwind = yes for cross-compile"

+  libc_cv_forced_unwind=yes

+fi

 if test $libc_cv_forced_unwind = yes; then

   cat >>confdefs.h <<\_ACEOF

 #define HAVE_FORCED_UNWIND 1

@@ -141,6 +145,10 @@

 { echo "$as_me:$LINENO: result: $libc_cv_c_cleanup" >&5

 echo "${ECHO_T}$libc_cv_c_cleanup" >&6; }

   CFLAGS="$old_CFLAGS"

+  if test $libc_cv_c_cleanup = no -a $build_cpu != $host_cpu; then

+    echo "$as_me:$LINENO: result: forcing libc_cv_c_cleanup = yes for cross-compile"

+    libc_cv_c_cleanup=yes

+  fi

   if test $libc_cv_c_cleanup = no; then

     { { echo "$as_me:$LINENO: error: the compiler must support C cleanup handling" >&5

 echo "$as_me: error: the compiler must support C cleanup handling" >&2;}

diff -durN glibc-2_9.orig/nptl/sysdeps/pthread/configure.in glibc-2_9/nptl/sysdeps/pthread/configure.in

--- glibc-2_9.orig/nptl/sysdeps/pthread/configure.in	2003-12-03 07:50:01.000000000 +0100

+++ glibc-2_9/nptl/sysdeps/pthread/configure.in	2009-02-02 22:01:28.000000000 +0100

@@ -28,6 +28,9 @@

 struct _Unwind_Context *context;

 _Unwind_GetCFA (context)],

 libc_cv_forced_unwind=yes, libc_cv_forced_unwind=no)])

+if test $libc_cv_forced_unwind = no -a $build_cpu != $host_cpu; then

+  libc_cv_forced_unwind=yes

+fi

 if test $libc_cv_forced_unwind = yes; then

   AC_DEFINE(HAVE_FORCED_UNWIND)

 dnl Check for C cleanup handling.

@@ -41,6 +44,9 @@

   puts ("test")],

 libc_cv_c_cleanup=yes, libc_cv_c_cleanup=no)])

   CFLAGS="$old_CFLAGS"

+  if test $libc_cv_c_cleanup = no -a $build_cpu != $host_cpu; then

+    libc_cv_c_cleanup=yes

+  fi

   if test $libc_cv_c_cleanup = no; then

     AC_MSG_ERROR([the compiler must support C cleanup handling])

   fi