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patches/gcc/4.3.4/100-alpha-mieee-default.patch
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--
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: ../4.3.2/100-alpha-mieee-default.patch

     2 

     3 -= BEGIN original header =-

     4 Original patch from gentoo: gentoo/src/patchsets/gcc/4.3.1/gentoo/00_all_gcc-4.1-alpha-mieee-default.patch

     5 Set the default behavior on alpha to use -mieee since the large majority of

     6 time we want this (bad/weird things can happen with packages built without

     7 -mieee).

     8 

     9 To satisfy those people who may not want -mieee forced on them all the time,

    10 we also provide -mno-ieee.

    11 

    12 Patch by Mike Frysinger <vapier@gentoo.org>

    13 

    14 -= END original header =-

    15 

    16 diff -durN gcc-4.3.3.orig/gcc/config/alpha/alpha.h gcc-4.3.3/gcc/config/alpha/alpha.h

    17 --- gcc-4.3.3.orig/gcc/config/alpha/alpha.h	2007-12-06 14:25:37.000000000 +0100

    18 +++ gcc-4.3.3/gcc/config/alpha/alpha.h	2009-01-27 22:19:02.000000000 +0100

    19 @@ -95,6 +95,8 @@

    20    while (0)

    21  #endif

    22  

    23 +#define CPP_SPEC "%{!no-ieee:-mieee}"

    24 +

    25  #define WORD_SWITCH_TAKES_ARG(STR)		\

    26   (!strcmp (STR, "rpath") || DEFAULT_WORD_SWITCH_TAKES_ARG(STR))

    27  

    28 diff -durN gcc-4.3.3.orig/gcc/config/alpha/alpha.opt gcc-4.3.3/gcc/config/alpha/alpha.opt

    29 --- gcc-4.3.3.orig/gcc/config/alpha/alpha.opt	2007-08-02 12:49:31.000000000 +0200

    30 +++ gcc-4.3.3/gcc/config/alpha/alpha.opt	2009-01-27 22:19:02.000000000 +0100

    31 @@ -39,7 +39,7 @@

    32  Request IEEE-conformant math library routines (OSF/1)

    33  

    34  mieee

    35 -Target Report RejectNegative Mask(IEEE)

    36 +Target Report Mask(IEEE)

    37  Emit IEEE-conformant code, without inexact exceptions

    38  

    39  mieee-with-inexact
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