scripts: remove . from $PATH
Add CT_SanitizePath function which removes entries referring to ., /tmp
and non-existing directories from $PATH, and call it early in the
build script.
If . is in PATH, gcc-4.4.4 build breaks:
[ALL ] checking what assembler to use...
/tmp/build/targets/arm-unknown-linux-uclibcgnueabi/build/gcc-core-static/arm-unknown-linux-uclibcgnueabi/bin/as
...
[ALL ] config.status: creating as
i.e. "as" is supposed to be the arm-unknown-linux-uclibcgnueabi cross assembler,
but config.status creates a local "as" script which is calling the
host assembler.
Signed-off-by: Johannes Stezenbach <js@sig21.net>
[Yann E. MORIN: style fixes + explanations]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
(transplanted from 20dd8cef1c8adff0aa3e78ae6d7acfbc45ed5a83)
1 Original patch from gentoo: gentoo/src/patchsets/gcc/4.3.1/gentoo/00_all_gcc-trampolinewarn.patch
2 This trivial patch causes gcc to emit a warning whenever
3 it generates a trampoline. These are otherwise hard to
4 locate. It is rigged to default ON - to have it default
5 to OFF remove the text 'Init(1)' from the common.opt
6 patch, leaving just 'Common Var(warn_trampolines)'.
7 Kevin F. Quinn <kevquinn@gentoo.org> 17 Jan 2006
9 diff -durN gcc-4.3.1.orig/gcc/builtins.c gcc-4.3.1/gcc/builtins.c
10 --- gcc-4.3.1.orig/gcc/builtins.c 2008-04-23 00:36:27.000000000 +0200
11 +++ gcc-4.3.1/gcc/builtins.c 2008-06-10 14:56:54.000000000 +0200
13 trampolines_created = 1;
14 INITIALIZE_TRAMPOLINE (r_tramp, r_func, r_chain);
16 + if (warn_trampolines)
17 + warning (OPT_Wtrampolines, "generating trampoline in object (requires executable stack)");
22 diff -durN gcc-4.3.1.orig/gcc/common.opt gcc-4.3.1/gcc/common.opt
23 --- gcc-4.3.1.orig/gcc/common.opt 2008-01-22 15:11:44.000000000 +0100
24 +++ gcc-4.3.1/gcc/common.opt 2008-06-10 14:56:54.000000000 +0200
26 Common Var(warn_system_headers) Warning
27 Do not suppress warnings from system headers
30 +Common Var(warn_trampolines) Init(1)
31 +Warn whenever a trampoline is generated
34 Common Var(warn_uninitialized) Warning
35 Warn about uninitialized automatic variables