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Greg Kroah-Hartman 8ac3b5cd3e lib/vdso: use "grep -E" instead of "egrep"

The latest version of grep claims the egrep is now obsolete so the build
now contains warnings that look like:
	egrep: warning: egrep is obsolescent; using grep -E
fix this up by moving the vdso Makefile to use "grep -E" instead.

Cc: Andy Lutomirski <luto@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Link: https://lore.kernel.org/r/20220920170633.3133829-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2022-11-23 19:50:15 +01:00

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SPDX-License-Identifier: GPL-2.0

GENERIC_VDSO_MK_PATH := $(abspath $(lastword $(MAKEFILE_LIST))) GENERIC_VDSO_DIR := $(dir $(GENERIC_VDSO_MK_PATH))

c-gettimeofday-$(CONFIG_GENERIC_GETTIMEOFDAY) := $(addprefix $(GENERIC_VDSO_DIR), gettimeofday.c)

This cmd checks that the vdso library does not contain absolute relocation

It has to be called after the linking of the vdso library and requires it

as a parameter.

$(ARCH_REL_TYPE_ABS) is defined in the arch specific makefile and corresponds

to the absolute relocation types printed by "objdump -R" and accepted by the

dynamic linker.

ifndef ARCH_REL_TYPE_ABS $(error ARCH_REL_TYPE_ABS is not set) endif

quiet_cmd_vdso_check = VDSOCHK $@ cmd_vdso_check = if $(OBJDUMP) -R $@ | grep -E -h "$(ARCH_REL_TYPE_ABS)";
then (echo >&2 "$@: dynamic relocations are not supported";
rm -f $@; /bin/false); fi

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