patches/gcc/4.4.4/100-alpha-mieee-default.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Sep 12 23:51:25 2010 +0200 (2010-09-12)
changeset 2123 ff2181adbd28
child 2148 ada9128c98b8
permissions -rw-r--r--
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>
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diff -durN gcc-4.4.0.orig/gcc/config/alpha/alpha.h gcc-4.4.0/gcc/config/alpha/alpha.h
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diff -durN gcc-4.4.4.orig/gcc/config/alpha/alpha.h gcc-4.4.4/gcc/config/alpha/alpha.h
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--- gcc-4.4.4.orig/gcc/config/alpha/alpha.h	2009-02-20 16:20:38.000000000 +0100
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+++ gcc-4.4.4/gcc/config/alpha/alpha.h	2010-05-16 19:10:19.000000000 +0200
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@@ -95,6 +95,8 @@
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   while (0)
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 #endif
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+#define CPP_SPEC "%{!no-ieee:-mieee}"
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+
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 #define WORD_SWITCH_TAKES_ARG(STR)		\
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  (!strcmp (STR, "rpath") || DEFAULT_WORD_SWITCH_TAKES_ARG(STR))
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diff -durN gcc-4.4.4.orig/gcc/config/alpha/alpha.opt gcc-4.4.4/gcc/config/alpha/alpha.opt
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--- gcc-4.4.4.orig/gcc/config/alpha/alpha.opt	2007-08-02 12:49:31.000000000 +0200
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+++ gcc-4.4.4/gcc/config/alpha/alpha.opt	2010-05-16 19:10:19.000000000 +0200
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@@ -39,7 +39,7 @@
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 Request IEEE-conformant math library routines (OSF/1)
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 mieee
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-Target Report RejectNegative Mask(IEEE)
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+Target Report Mask(IEEE)
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 Emit IEEE-conformant code, without inexact exceptions
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 mieee-with-inexact