patches/glibc/2.6/190-alpha-atfcts.patch
author |
"Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> |
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Sun Sep 12 23:51:25 2010 +0200 (2010-09-12) |
changeset 2123 |
ff2181adbd28 |
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>
yann@748
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--- glibc-2.6/sysdeps/unix/sysv/linux/kernel-features.h 2006-07-29 07:43:27.000000000 +0300
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+++ glibc-2.6/sysdeps/unix/sysv/linux/kernel-features.h.new 2008-07-26 08:45:06.000000000 +0300
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@@ -445,7 +445,7 @@
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/* The *at syscalls were introduced just after 2.6.16-rc1. Due to the way the
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kernel versions are advertised we can only rely on 2.6.17 to have
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the code. */
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-#if __LINUX_KERNEL_VERSION >= 0x020611
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+#if __LINUX_KERNEL_VERSION >= 0x020611 && !defined __alpha__
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# define __ASSUME_ATFCTS 1
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#endif
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