kbuild: Fix gcc -x syntax
authorJean Delvare <jdelvare@suse.de>
Tue, 2 Oct 2012 14:42:36 +0000 (16:42 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 12 Oct 2012 20:38:37 +0000 (05:38 +0900)
commit4893cf612a68d26cdbe0e16ba9c42772136e2340
treeb057aa6eda3d88d158efcb9fc5389c928d1387be
parentf15977883584e7b52832518c3fef115957d3203b
kbuild: Fix gcc -x syntax

commit b1e0d8b70fa31821ebca3965f2ef8619d7c5e316 upstream.

The correct syntax for gcc -x is "gcc -x assembler", not
"gcc -xassembler". Even though the latter happens to work, the former
is what is documented in the manual page and thus what gcc wrappers
such as icecream do expect.

This isn't a cosmetic change. The missing space prevents icecream from
recognizing compilation tasks it can't handle, leading to silent kernel
miscompilations.

Besides me, credits go to Michael Matz and Dirk Mueller for
investigating the miscompilation issue and tracking it down to this
incorrect -x parameter syntax.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Bernhard Walle <bernhard@bwalle.de>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/mips/Makefile
arch/mips/kernel/Makefile
arch/x86/Makefile
scripts/Kbuild.include
scripts/gcc-version.sh
scripts/gcc-x86_32-has-stack-protector.sh
scripts/gcc-x86_64-has-stack-protector.sh
scripts/kconfig/check.sh
scripts/kconfig/lxdialog/check-lxdialog.sh
tools/perf/Makefile
tools/power/cpupower/Makefile