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| author |   Ilya Leoshkevich <iii@linux.ibm.com> | 2019-10-28 11:20:49 +0100 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2019-10-28 16:15:51 +0100 |
| commit | 313e7f6fb1d9a8814424c2c6878848648c9c090f (patch) | |
| tree | b0e3c79894452536809c7aec09276c03f61a4d2e /tools/testing/selftests/bpf/Makefile | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next (diff) | |
| download | linux-dev-313e7f6fb1d9a8814424c2c6878848648c9c090f.tar.xz linux-dev-313e7f6fb1d9a8814424c2c6878848648c9c090f.zip | |
selftest/bpf: Use -m{little, big}-endian for clang
When cross-compiling tests from x86 to s390, the resulting BPF objects
fail to load due to endianness mismatch.
Fix by using BPF-GCC endianness check for clang as well.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20191028102049.7489-1-iii@linux.ibm.com
Diffstat (limited to 'tools/testing/selftests/bpf/Makefile')
| -rw-r--r-- | tools/testing/selftests/bpf/Makefile | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 933f39381039..3209c208f3b3 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -131,8 +131,13 @@ $(shell $(1) -v -E - </dev/null 2>&1 \ | sed -n '/<...> search starts here:/,/End of search list./{ s| \(/.*\)|-idirafter \1|p }') endef +# Determine target endianness. +IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \ + grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__') +MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian) + CLANG_SYS_INCLUDES = $(call get_sys_includes,$(CLANG)) -BPF_CFLAGS = -g -D__TARGET_ARCH_$(SRCARCH) \ +BPF_CFLAGS = -g -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \ -I. -I./include/uapi -I$(APIDIR) \ -I$(BPFDIR) -I$(abspath $(OUTPUT)/../usr/include) @@ -271,12 +276,8 @@ $(eval $(call DEFINE_TEST_RUNNER,test_progs,no_alu32)) # Define test_progs BPF-GCC-flavored test runner. ifneq ($(BPF_GCC),) -IS_LITTLE_ENDIAN = $(shell $(CC) -dM -E - </dev/null | \ - grep 'define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__') -MENDIAN=$(if $(IS_LITTLE_ENDIAN),-mlittle-endian,-mbig-endian) - TRUNNER_BPF_BUILD_RULE := GCC_BPF_BUILD_RULE -TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc) $(MENDIAN) +TRUNNER_BPF_CFLAGS := $(BPF_CFLAGS) $(call get_sys_includes,gcc) TRUNNER_BPF_LDFLAGS := $(eval $(call DEFINE_TEST_RUNNER,test_progs,bpf_gcc)) endif |