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patches/gcc/4.3.2/100-alpha-mieee-default.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Jul 17 22:43:07 2011 +0200 (2011-07-17)
changeset 2893 a8a65758664f
parent 746 b150d6f590fc
permissions -rw-r--r--
cc/gcc: do not use the core pass-2 to build the baremetal compiler

In case we build a baremetal compiler, use the standard passes:
- core_cc is used to build the C library;
- as such, it is meant to run on build, not host;
- the final compiler is meant to run on host;

As the current final compiler step can not build a baremetal compiler,
call the core backend from the final step.

NB: Currently, newlib is built during the start_files pass, so we have
to have a core compiler by then... Once we can build the baremetal
compiler from the final cc step, then we can move the newlib build to
the proper step, and then get rid of the core pass-1 static compiler...

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> 
     1 Original patch from gentoo: gentoo/src/patchsets/gcc/4.3.1/gentoo/00_all_gcc-4.1-alpha-mieee-default.patch

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

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

     4 -mieee).

     5 

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

     7 we also provide -mno-ieee.

     8 

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

    10 

    11 diff -durN gcc-4.3.1.orig/gcc/config/alpha/alpha.h gcc-4.3.1/gcc/config/alpha/alpha.h

    12 --- gcc-4.3.1.orig/gcc/config/alpha/alpha.h	2007-12-06 14:25:37.000000000 +0100

    13 +++ gcc-4.3.1/gcc/config/alpha/alpha.h	2008-06-10 14:56:36.000000000 +0200

    14 @@ -95,6 +95,8 @@

    15    while (0)

    16  #endif

    17  

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

    19 +

    20  #define WORD_SWITCH_TAKES_ARG(STR)		\

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

    22  

    23 diff -durN gcc-4.3.1.orig/gcc/config/alpha/alpha.opt gcc-4.3.1/gcc/config/alpha/alpha.opt

    24 --- gcc-4.3.1.orig/gcc/config/alpha/alpha.opt	2007-08-02 12:49:31.000000000 +0200

    25 +++ gcc-4.3.1/gcc/config/alpha/alpha.opt	2008-06-10 14:56:36.000000000 +0200

    26 @@ -39,7 +39,7 @@

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

    28  

    29  mieee

    30 -Target Report RejectNegative Mask(IEEE)

    31 +Target Report Mask(IEEE)

    32  Emit IEEE-conformant code, without inexact exceptions

    33  

    34  mieee-with-inexact
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