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charset="utf-8" 1. Fix cross-compile issue for some files: [Issue] When cross-compiling bpf selftests for arm64 on x86_64 host, the following = error occurs: progs/loop2.c:20:7: error: incomplete definition of type 'struct user_pt_re= gs' 20 | if (PT_REGS_RC(ctx) & 1) | ^~~~~~~~~~~~~~~ There are same error in files: loop1.c, loop2.c, loop3.c, loop6.c ??? [Reason] On arm64, in file bpf_tracing.h, we use userspace's user_pt_regs, which is defined in "linux/ptrace.h". We include the header file by adding "-idirafter /usr/include" for "CLANG_C= FLAGS". However, during cross-compiling, "linux/ptrace.h" is based on x86_64 and has no definition of "struct user_pt_regs". [Fix] Thus, to fix this issue, we include the Linux source tree's header file dir= ectory. 2. Fix static compile issue for "-lzstd": [Issue] By running the command "LDLIBS=3D-static LDFLAGS=3D--sysroot=3D/aarch64-lin= ux-gnu/libc ./vmtest.sh -s -- ./test_progs", during static cross-compiling, an error occurs: /aarch64-linux-gnu/bin/ld: aarch64-linux-gnu/libc/usr/lib/libelf.a(elf_comp= ress.o): in function `__libelf_compress': (.text+0xec): undefined reference to `ZSTD_createCCtx' /aarch64-linux-gnu/bin/ld: (.text+0xf0): undefined reference to `ZSTD_creat= eCCtx' ... [Fix] For static compile, add "LDLIBS +=3D -lzstd". Signed-off-by: Lin Yikai --- tools/testing/selftests/bpf/Makefile | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests= /bpf/Makefile index ec7d425c4022..5b725bc890d2 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -48,6 +48,10 @@ CFLAGS +=3D -g $(OPT_FLAGS) -rdynamic \ LDFLAGS +=3D $(SAN_LDFLAGS) LDLIBS +=3D $(LIBELF_LIBS) -lz -lrt -lpthread =20 +ifneq (,$(findstring -static,$(LDLIBS))) +LDLIBS +=3D -lzstd +endif + LDLIBS +=3D $(shell $(PKG_CONFIG) --libs libpcap 2>/dev/null) CFLAGS +=3D $(shell $(PKG_CONFIG) --cflags libpcap 2>/dev/null) CFLAGS +=3D $(shell $(PKG_CONFIG) --exists libpcap 2>/dev/null && echo "-D= TRAFFIC_MONITOR=3D1") @@ -443,13 +447,19 @@ CLANG_TARGET_ARCH =3D --target=3D$(notdir $(CROSS_COM= PILE:%-=3D%)) endif =20 CLANG_SYS_INCLUDES =3D $(call get_sys_includes,$(CLANG),$(CLANG_TARGET_ARC= H)) +CLANG_CFLAGS =3D $(CLANG_SYS_INCLUDES) + BPF_CFLAGS =3D -g -Wall -Werror -D__TARGET_ARCH_$(SRCARCH) $(MENDIAN) \ -I$(INCLUDE_DIR) -I$(CURDIR) -I$(APIDIR) \ -I$(abspath $(OUTPUT)/../usr/include) \ -Wno-compare-distinct-pointer-types # TODO: enable me -Wsign-compare =20 -CLANG_CFLAGS =3D $(CLANG_SYS_INCLUDES) +#"make headers_install" at first +ifneq ($(CROSS_COMPILE),) +src_uapi_dir :=3D $(srctree)/usr/include +BPF_CFLAGS +=3D -I$(src_uapi_dir) +endif =20 $(OUTPUT)/test_l4lb_noinline.o: BPF_CFLAGS +=3D -fno-inline $(OUTPUT)/test_xdp_noinline.o: BPF_CFLAGS +=3D -fno-inline --=20 2.34.1