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patches/glibc/ports-2.10.1/390-cross-compile-nptl.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Fri Nov 04 19:22:29 2011 +0100 (2011-11-04)
changeset 2735 f09ed6dd71a3
permissions -rw-r--r--
kernel/linux: fix packed attribute in exported headers

UBI headers (and maybe others as well) are broken because the 'packed'
attribute is not sanitised when the headers are exported to userspace.

Apply the fix from upstream:
https://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=f210735fe2f17a6225432ee3d1239bcf23a8659c

(Also, buildroot does the same, BTW)

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> 
     1 A little hack for cross-compiling NPTL

     2 

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

     4 

     5 diff -durN glibc-2.10.1.orig/nptl/sysdeps/pthread/configure glibc-2.10.1/nptl/sysdeps/pthread/configure

     6 --- glibc-2.10.1.orig/nptl/sysdeps/pthread/configure	2009-05-17 14:19:31.000000000 +0200

     7 +++ glibc-2.10.1/nptl/sysdeps/pthread/configure	2009-11-13 00:50:43.000000000 +0100

     8 @@ -78,6 +78,10 @@

     9  fi

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

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

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

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

    14 +  libc_cv_forced_unwind=yes

    15 +fi

    16  if test $libc_cv_forced_unwind = yes; then

    17    cat >>confdefs.h <<\_ACEOF

    18  #define HAVE_FORCED_UNWIND 1

    19 @@ -141,6 +145,10 @@

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

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

    22    CFLAGS="$old_CFLAGS"

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

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

    25 +    libc_cv_c_cleanup=yes

    26 +  fi

    27    if test $libc_cv_c_cleanup = no; then

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

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

    30 diff -durN glibc-2.10.1.orig/nptl/sysdeps/pthread/configure.in glibc-2.10.1/nptl/sysdeps/pthread/configure.in

    31 --- glibc-2.10.1.orig/nptl/sysdeps/pthread/configure.in	2003-12-03 07:50:01.000000000 +0100

    32 +++ glibc-2.10.1/nptl/sysdeps/pthread/configure.in	2009-11-13 00:50:43.000000000 +0100

    33 @@ -28,6 +28,9 @@

    34  struct _Unwind_Context *context;

    35  _Unwind_GetCFA (context)],

    36  libc_cv_forced_unwind=yes, libc_cv_forced_unwind=no)])

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

    38 +  libc_cv_forced_unwind=yes

    39 +fi

    40  if test $libc_cv_forced_unwind = yes; then

    41    AC_DEFINE(HAVE_FORCED_UNWIND)

    42  dnl Check for C cleanup handling.

    43 @@ -41,6 +44,9 @@

    44    puts ("test")],

    45  libc_cv_c_cleanup=yes, libc_cv_c_cleanup=no)])

    46    CFLAGS="$old_CFLAGS"

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

    48 +    libc_cv_c_cleanup=yes

    49 +  fi

    50    if test $libc_cv_c_cleanup = no; then

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

    52    fi
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