scripts, cc/gcc: do not fail on existing symlinks or build.log
If the user builds a toolchain over an existing one, so, without removing
CT_PREFIX_DIR, the build fails as the symlinks already exist, as does the
build.log.
This can also happen (for build.log) if the user first ran in download-
or extract-only.
Patch (with no SoB) originally from:
Phil Wilshire <phil.wilshire@overturenetworks.com>
Modified by me as it did not apply cleanly.
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
(transplanted from 1ebc2248cc60230cd53ff94ae8f8f1e3261461a3)
1 alpha does not have a __NR_creat
3 http://bugs.gentoo.org/227275
4 http://sourceware.org/bugzilla/show_bug.cgi?id=6650
6 diff -durN glibc-2.10.1.orig/sysdeps/unix/sysv/linux/wordsize-64/creat64.c glibc-2.10.1/sysdeps/unix/sysv/linux/wordsize-64/creat64.c
7 --- glibc-2.10.1.orig/sysdeps/unix/sysv/linux/wordsize-64/creat64.c 2007-11-10 20:34:26.000000000 +0100
8 +++ glibc-2.10.1/sysdeps/unix/sysv/linux/wordsize-64/creat64.c 2009-11-13 00:50:51.000000000 +0100
10 /* Defined as alias for the syscall. */
13 +#include "../../../../../io/creat64.c"