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patches/glibc/2.9/430-2.7-cross-compile-nptl.patch
author "Benoît THÉBAUDEAU" <benoit.thebaudeau@advansee.com>
Wed May 25 20:23:48 2011 +0200 (2011-05-25)
branch1.11
changeset 2552 cc285cc98e65
parent 1201 c9967a6e3b25
permissions -rw-r--r--
debug/gdb: fix runtime sysroot

This patch sets the runtime sysroot to fix the following GDB warning:
"Unable to find dynamic linker breakpoint function.
GDB will be unable to debug shared library initializers
and track explicitly loaded dynamic code."

The sysroot can later be changed within gdb with the `set sysroot`
command if necessary.

Signed-off-by: "Benoît THÉBAUDEAU" <benoit.thebaudeau@advansee.com>
(transplanted from 7690196856ce4a4700d1887cc3adf80acc627c52) 
     1 Original patch from: gentoo/src/patchsets/glibc/2.9/5070_all_glibc-2.7-cross-compile-nptl.patch

     2 

     3 -= BEGIN original header =-

     4 A little hack for cross-compiling NPTL

     5 

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

     7 

     8 -= END original header =-

     9 

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

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

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

    13 @@ -78,6 +78,10 @@

    14  fi

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

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

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

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

    19 +  libc_cv_forced_unwind=yes

    20 +fi

    21  if test $libc_cv_forced_unwind = yes; then

    22    cat >>confdefs.h <<\_ACEOF

    23  #define HAVE_FORCED_UNWIND 1

    24 @@ -141,6 +145,10 @@

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

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

    27    CFLAGS="$old_CFLAGS"

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

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

    30 +    libc_cv_c_cleanup=yes

    31 +  fi

    32    if test $libc_cv_c_cleanup = no; then

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

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

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

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

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

    38 @@ -28,6 +28,9 @@

    39  struct _Unwind_Context *context;

    40  _Unwind_GetCFA (context)],

    41  libc_cv_forced_unwind=yes, libc_cv_forced_unwind=no)])

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

    43 +  libc_cv_forced_unwind=yes

    44 +fi

    45  if test $libc_cv_forced_unwind = yes; then

    46    AC_DEFINE(HAVE_FORCED_UNWIND)

    47  dnl Check for C cleanup handling.

    48 @@ -41,6 +44,9 @@

    49    puts ("test")],

    50  libc_cv_c_cleanup=yes, libc_cv_c_cleanup=no)])

    51    CFLAGS="$old_CFLAGS"

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

    53 +    libc_cv_c_cleanup=yes

    54 +  fi

    55    if test $libc_cv_c_cleanup = no; then

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

    57    fi
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