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 2009-05-19 Aurelien Jarno <aurelien@aurel32.net>
3 * sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h: Define
4 FUTEX_WAIT_BITSET, FUTEX_WAKE_BITSET, FUTEX_CLOCK_REALTIME and
5 FUTEX_BITSET_MATCH_ANY.
7 ports/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h | 5 +++++
8 1 file changed, 5 insertions(+)
10 diff -durN glibc-2.10.1.orig/glibc-ports-2.10.1/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h glibc-2.10.1/glibc-ports-2.10.1/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h
11 --- glibc-2.10.1.orig/glibc-ports-2.10.1/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h 2009-05-16 10:36:20.000000000 +0200
12 +++ glibc-2.10.1/glibc-ports-2.10.1/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h 2009-11-13 00:51:11.000000000 +0100
14 #define FUTEX_LOCK_PI 6
15 #define FUTEX_UNLOCK_PI 7
16 #define FUTEX_TRYLOCK_PI 8
17 +#define FUTEX_WAIT_BITSET 9
18 +#define FUTEX_WAKE_BITSET 10
19 #define FUTEX_PRIVATE_FLAG 128
20 +#define FUTEX_CLOCK_REALTIME 256
22 +#define FUTEX_BITSET_MATCH_ANY 0xffffffff
24 /* Values for 'private' parameter of locking macros. Yes, the
25 definition seems to be backwards. But it is not. The bit will be
26 diff -durN glibc-2.10.1.orig/ports/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h glibc-2.10.1/ports/sysdeps/unix/sysv/linux/alpha/nptl/lowlevellock.h