crosstool-ng: patches/binutils/2.19.1/130-check_ldrunpath

debug/cross-gdb: check host dependencies

Cross-gdb depends on expat and python. If either is missing, cross-gdb will
build successfully, but lacking some features.

Especially, if expat is missing, cross-gdb will be unable to parse the target
description, which may lead to runtime malfunctions and the following GDB
warning:
"Can not parse XML target description; XML support was disabled at compile time"

Hence, expat should be considered mandatory.

On the other hand, the features missing without python are not critical, so
python should not be considered mandatory.

This patch does the following:
- At configure time, warn the user if either expat or python is missing.
- In menuconfig, disable the static build options regarding cross-gdb if no
static version of expat is available, and disable cross-gdb if expat is
missing.

Signed-off-by: "Benoît THÉBAUDEAU" <benoit.thebaudeau@advansee.com>
[yann.morin.1998@anciens.enib.fr: add comment for impossible static cross-gdb]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

     1 Original patch from: ../crosstool-NG/ct-ng.trunk/patches/binutils/2.19/130-check_ldrunpath_length.patch

     3 -= BEGIN original header =-

     4 Original patch from Gentoo:

     5 gentoo/src/patchsets/binutils/2.19/42_all_012_check_ldrunpath_length.patch

     7 Originaly from Debian:

     8 ## 012_check_ldrunpath_length.dpatch by Chris Chimelis <chris@debian.org>

     9 ##

    10 ## All lines beginning with `## DP:' are a description of the patch.

    11 ## DP: Only generate an RPATH entry if LD_RUN_PATH is not empty, for

    12 ## DP: cases where -rpath isn't specified. (#151024)

    14 -= END original header =-

    16 diff -durN binutils-2.19.1.orig/ld/emultempl/elf32.em binutils-2.19.1/ld/emultempl/elf32.em

    17 --- binutils-2.19.1.orig/ld/emultempl/elf32.em	2008-09-07 06:02:31.000000000 +0200

    18 +++ binutils-2.19.1/ld/emultempl/elf32.em	2009-03-08 11:57:01.000000000 +0100

    19 @@ -1219,6 +1219,8 @@

    20  	      && command_line.rpath == NULL)

    21  	    {

    22  	      lib_path = (const char *) getenv ("LD_RUN_PATH");

    23 +	      if ((lib_path) && (strlen (lib_path) == 0))

    24 +		  lib_path = NULL;

    25  	      if (gld${EMULATION_NAME}_search_needed (lib_path, &n,

    26  						      force))

    27  		break;

    28 @@ -1404,6 +1406,8 @@

    29    rpath = command_line.rpath;

    30    if (rpath == NULL)

    31      rpath = (const char *) getenv ("LD_RUN_PATH");

    32 +  if ((rpath) && (strlen (rpath) == 0))

    33 +      rpath = NULL;

    34    if (! (bfd_elf_size_dynamic_sections

    35  	 (link_info.output_bfd, command_line.soname, rpath,

    36  	  command_line.filter_shlib,

author	"Benoît THÉBAUDEAU" <benoit.thebaudeau@advansee.com>
	Wed Jun 08 15:47:43 2011 +0200 (2011-06-08)
changeset 2508	9e2761e59a75
permissions	-rw-r--r--