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 diff -durN glibc-2.7.orig/sysdeps/unix/sysv/linux/sh/sys/procfs.h glibc-2.7/sysdeps/unix/sysv/linux/sh/sys/procfs.h
2 --- glibc-2.7.orig/sysdeps/unix/sysv/linux/sh/sys/procfs.h 2008-10-22 21:23:32.000000000 +0200
3 +++ glibc-2.7/sysdeps/unix/sysv/linux/sh/sys/procfs.h 2008-10-22 21:41:54.000000000 +0200
6 #include <sys/ucontext.h>
8 +#include <asm/ptrace.h>
12 diff -durN glibc-2.7.orig/sysdeps/unix/sysv/linux/sh/sys/user.h glibc-2.7/sysdeps/unix/sysv/linux/sh/sys/user.h
13 --- glibc-2.7.orig/sysdeps/unix/sysv/linux/sh/sys/user.h 2008-10-22 21:23:32.000000000 +0200
14 +++ glibc-2.7/sysdeps/unix/sysv/linux/sh/sys/user.h 2008-10-22 21:33:34.000000000 +0200
19 -#include <asm/user.h>
23 #endif /* sys/user.h */