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selftests/bpf: Split SAN_CFLAGS and SAN_LDFLAGS

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Memory Sanitizer requires passing different options to CFLAGS and
LDFLAGS: besides the mandatory -fsanitize=memory, one needs to pass
header and library paths, and passing -L to a compilation step
triggers -Wunused-command-line-argument. So introduce a separate
variable for linker flags. Use $(SAN_CFLAGS) as a default in order to
avoid complicating the ASan usage.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20230210001210.395194-4-iii@linux.ibm.com
This commit is contained in:
Ilya Leoshkevich
2023-02-10 01:11:57 +01:00
committed by Andrii Nakryiko
parent 585bf4640e
commit 0589d16475
1 changed files with 2 additions and 1 deletions
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3
tools/testing/selftests/bpf/Makefile
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@@ -22,10 +22,11 @@ endif
BPF_GCC ?= $(shell command -v bpf-gcc;)
SAN_CFLAGS ?=
SAN_LDFLAGS ?= $(SAN_CFLAGS)
CFLAGS += -g -O0 -rdynamic -Wall -Werror $(GENFLAGS) $(SAN_CFLAGS) \
-I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR) \
-I$(TOOLSINCDIR) -I$(APIDIR) -I$(OUTPUT)
LDFLAGS += $(SAN_CFLAGS)
LDFLAGS += $(SAN_LDFLAGS)
LDLIBS += -lelf -lz -lrt -lpthread
# Silence some warnings when compiled with clang