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 --- binutils-2.20/ld/configure.tgt.orig 2010-02-20 04:05:31.000000000 -0500
2 +++ binutils-2.20/ld/configure.tgt 2010-02-20 04:08:11.000000000 -0500
4 mips*-*-vxworks*) targ_emul=elf32ebmipvxworks
5 targ_extra_emuls="elf32elmipvxworks" ;;
6 mips*-*-windiss) targ_emul=elf32mipswindiss ;;
7 -mips64*el-*-linux-*) targ_emul=elf32ltsmipn32
8 - targ_extra_emuls="elf32btsmipn32 elf32ltsmip elf32btsmip elf64ltsmip elf64btsmip"
9 +mips64*el-*-linux-*) targ_emul=elf64ltsmip
10 + targ_extra_emuls="elf32ltsmipn32 elf32btsmipn32 elf32ltsmip elf32btsmip elf64btsmip"
11 targ_extra_libpath=$targ_extra_emuls ;;
12 -mips64*-*-linux-*) targ_emul=elf32btsmipn32
13 - targ_extra_emuls="elf32ltsmipn32 elf32btsmip elf32ltsmip elf64btsmip elf64ltsmip"
14 +mips64*-*-linux-*) targ_emul=elf64btsmip
15 + targ_extra_emuls="elf32btsmipn32 elf32ltsmipn32 elf32btsmip elf32ltsmip elf64ltsmip"
16 targ_extra_libpath=$targ_extra_emuls ;;
17 mips*el-*-linux-*) targ_emul=elf32ltsmip
18 targ_extra_emuls="elf32btsmip elf32ltsmipn32 elf64ltsmip elf32btsmipn32 elf64btsmip"