patches/gcc/4.3.5/100-alpha-mieee-default.patch
author "Yann E. MORIN" <yann.morin.1998@free.fr>
Sat Jan 04 01:02:57 2014 +0100 (2014-01-04)
changeset 3271 c65dc9b98841
parent 1461 35b30f8fb307
permissions -rw-r--r--
cc/gcc: diable libsanitizer without NPTL

gcc-4.8 comes with a new library to sanitise memory access:
- heap-, stack-, and global-buffer overflow, use-after-free
- data-races between threads

This library requires some _np parts of the API, which are not
implemented in the (old) LinuxThreads, which is still available
in uClibc.

Since NPTL requires a i486 or above, i386 are stuck with using LT,
which precludes building the libsanitizer.

Disable libsanitizer, a bit like libatomic is.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Niels Penneman <niels@penneman.org>
     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