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kselftest/arm64: mte: Fix pthread linking 

The GCC manual suggests to use -pthread, when linking with the PThread
library, also to add this switch to both the compilation and linking
stages.

Do as the manual says, to fix compilation with Ubuntu's 20.04 toolchain,
which was getting -lpthread too early on the command line:
------------
/usr/bin/ld: /tmp/cc5zbo2A.o: in function `execute_test':
tools/testing/selftests/arm64/mte/check_gcr_el1_cswitch.c:86:
	undefined reference to `pthread_create'
/usr/bin/ld: tools/testing/selftests/arm64/mte/check_gcr_el1_cswitch.c:90:
	undefined reference to `pthread_join'
------------

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Mark Brown <broone@kernel.org>
Link: https://lore.kernel.org/r/20210319165334.29213-3-andre.przywara@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Andre Przywara 2021-03-19 16:53:25 +00:00 committed by Catalin Marinas
parent 4a423645bc
commit e5decefd88
1 changed files with 2 additions and 1 deletions
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3
tools/testing/selftests/arm64/mte/Makefile
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@ -1,7 +1,8 @@
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2020 ARM Limited
CFLAGS += -std=gnu99 -I. -lpthread
CFLAGS += -std=gnu99 -I. -pthread
LDFLAGS += -pthread
SRCS := $(filter-out mte_common_util.c,$(wildcard *.c))
PROGS := $(patsubst %.c,%,$(SRCS))