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 diff -durN gcc-3.4.6.orig/gcc/config/arm/arm.c gcc-3.4.6/gcc/config/arm/arm.c
2 --- gcc-3.4.6.orig/gcc/config/arm/arm.c 2007-08-15 22:57:51.000000000 +0200
3 +++ gcc-3.4.6/gcc/config/arm/arm.c 2007-08-15 22:57:51.000000000 +0200
6 adjacent_mem_locations (rtx a, rtx b)
8 + /* We don't guarantee to preserve the order of these memory refs. */
9 + if (volatile_refs_p (a) || volatile_refs_p (b))
12 if ((GET_CODE (XEXP (a, 0)) == REG
13 || (GET_CODE (XEXP (a, 0)) == PLUS
14 && GET_CODE (XEXP (XEXP (a, 0), 1)) == CONST_INT))
15 @@ -4611,6 +4615,17 @@
18 val_diff = val1 - val0;
22 + /* If the target has load delay slots, then there's no benefit
23 + to using an ldm instruction unless the offset is zero and
24 + we are optimizing for size. */
25 + return (optimize_size && (REGNO (reg0) == REGNO (reg1))
26 + && (val0 == 0 || val1 == 0 || val0 == 4 || val1 == 4)
27 + && (val_diff == 4 || val_diff == -4));
30 return ((REGNO (reg0) == REGNO (reg1))
31 && (val_diff == 4 || val_diff == -4));