crosstool-ng: patches/gcc/4.4.0/100-alpha-mieee-default.patch@ff2181adbd28

cc/gcc: disable complibs if not selected

Force gcc to not link with some companion libraries when
there are not needed (because selected-out).

There is no option to tell gcc *not* to build the Graphite and/or
LTO stuff. They *will* be built if gcc finds the suitable companion
libraries. If we do not provide them, but the host has them, then
gcc *will* find them, and link with them.

Consider the following:
- host has suitable PPL and CLooG (eg. Debian Squeeze)
- user wants to build gcc>=4.4
- user de-selects GRAPHITE
- gcc will find the hosts PPL and CLooG, and will use them
- the user moves the toolchain to an older host that does
not have them (eg. Debian Lenny)
- the toolchain fails, when it was properly setup not to

So, explicitly tell gcc *not* to use unneeded companion libs.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

     1 diff -durN gcc-4.4.0.orig/gcc/config/alpha/alpha.h gcc-4.4.0/gcc/config/alpha/alpha.h

     2 --- gcc-4.4.0.orig/gcc/config/alpha/alpha.h	2009-02-20 16:20:38.000000000 +0100

     3 +++ gcc-4.4.0/gcc/config/alpha/alpha.h	2009-05-27 21:37:58.000000000 +0200

     4 @@ -95,6 +95,8 @@

     5    while (0)

     6  #endif

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

9 +

    10  #define WORD_SWITCH_TAKES_ARG(STR)		\

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

    13 diff -durN gcc-4.4.0.orig/gcc/config/alpha/alpha.opt gcc-4.4.0/gcc/config/alpha/alpha.opt

    14 --- gcc-4.4.0.orig/gcc/config/alpha/alpha.opt	2007-08-02 12:49:31.000000000 +0200

    15 +++ gcc-4.4.0/gcc/config/alpha/alpha.opt	2009-05-27 21:37:58.000000000 +0200

    16 @@ -39,7 +39,7 @@

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

    19  mieee

    20 -Target Report RejectNegative Mask(IEEE)

    21 +Target Report Mask(IEEE)

    22  Emit IEEE-conformant code, without inexact exceptions

    24  mieee-with-inexact

author	"Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
	Sun Sep 12 23:51:25 2010 +0200 (2010-09-12)
changeset 2123	ff2181adbd28
permissions	-rw-r--r--