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Kbuild: Ignore GREP_OPTIONS env variable

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When building the kernel in a shell which defines GREP_OPTIONS so that
grep behavior is modified, we can break the generation of the syscalls
table like so:

__SYSCALL_COMMON(^[[01;31m^[[K0^[[m^[[K, sys_read, sys_read)
__SYSCALL_COMMON(^[[01;31m^[[K1^[[m^[[K, sys_write, sys_write)
__SYSCALL_COMMON(^[[01;31m^[[K1^[[m^[[K0, sys_mprotect, sys_mprotect) ...

This is just the initial breakage, later we barf when generating
modules.

In this case, GREP_OPTIONS contains "--color=always" which adds the shell
colors markup and completely fudges the headers under ...generated/asm/.

Fix that by unexporting the GREP_OPTIONS variable for the whole kernel
build as we tend to use grep at a bunch of places.

Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Michal Marek <mmarek@suse.cz>
This commit is contained in:
Borislav Petkov 2013-11-11 15:27:43 +01:00 committed by Michal Marek
parent 6f62259b1a
commit ab7474ea53
1 changed files with 3 additions and 0 deletions
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3
Makefile
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@ -22,6 +22,9 @@ LC_COLLATE=C
LC_NUMERIC=C
export LC_COLLATE LC_NUMERIC
# Avoid interference with shell env settings
unexport GREP_OPTIONS
# We are using a recursive build, so we need to do a little thinking
# to get the ordering right.
#