Messages in this thread | | | Date | Sat, 7 Jul 2018 15:49:36 -0700 | From | Alexei Starovoitov <> | Subject | Re: [PATCH v1] bpf: fix compilation of samples/bpf/ |
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On Sat, Jul 07, 2018 at 05:52:03PM +0300, Constantine Shulyupin wrote: > Example of errors: > > samples/bpf/test_lru_dist.c:39:8: error: redefinition of ‘struct list_head’ > struct list_head { > ^~~~~~~~~ > In file included from samples/bpf/test_lru_dist.c:9:0: > ./tools/include/linux/types.h:69:8: note: originally defined here > > In file included from samples/bpf/sock_example.c:27:0: > /usr/include/linux/ip.h:102:2: error: unknown type name ‘__sum16’ > > samples/bpf/bpf_load.c: In function ‘load_and_attach’: > samples/bpf/bpf_load.c:90:15: error: ‘BPF_PROG_TYPE_RAW_TRACEPOINT’ undeclared (first use in this function); did you mean ‘BPF_PROG_TYPE_TRACEPOINT’? > > samples/bpf/xdpsock_user.c:10:10: fatal error: linux/if_xdp.h: No such file or directory > > samples/bpf/task_fd_query_user.c: In function ‘test_debug_fs_uprobe’: > samples/bpf/task_fd_query_user.c:270:31: error: ‘BPF_FD_TYPE_URETPROBE’ undeclared (first use in this function); did you mean ‘BPF_PROG_TYPE_KPROBE’? > > samples/bpf/parse_varlen.c:111:8: error: redefinition of 'vlan_hdr' > struct vlan_hdr { > ^ > ./include/linux/if_vlan.h:38:8: note: previous definition is here > > Signed-off-by: Constantine Shulyupin <const@MakeLinux.com> > --- > Makefile | 1 + > samples/bpf/Makefile | 5 +++-- > samples/bpf/xdp_sample_pkts_user.c | 3 +++ > 3 files changed, 7 insertions(+), 2 deletions(-) > > diff --git a/Makefile b/Makefile > index d15ac32afbaf..824006258319 100644 > --- a/Makefile > +++ b/Makefile > @@ -441,6 +441,7 @@ export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE > export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE > export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL > export KBUILD_ARFLAGS > +export USERINCLUDE > > # When compiling out-of-tree modules, put MODVERDIR in the module > # tree rather than in the kernel tree. The kernel tree might > diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile > index 9ea2f7b64869..991273c81459 100644 > --- a/samples/bpf/Makefile > +++ b/samples/bpf/Makefile > @@ -167,11 +167,12 @@ always += xdp_fwd_kern.o > always += task_fd_query_kern.o > always += xdp_sample_pkts_kern.o > > -HOSTCFLAGS += -I$(objtree)/usr/include > +HOSTCFLAGS += -D__EXPORTED_HEADERS__ $(USERINCLUDE)
the goal of the patch is to avoid doing 'make headers_install' to build samples/bpf/ ? The idea of the patch is interesting, but it breaks the build for me: /w/net-next make samples/bpf/ make[1]: Entering directory `/data/users/ast/net-next/bld_x64' Using .. as source for kernel GEN ./Makefile CALL ../scripts/checksyscalls.sh DESCEND objtool HOSTCC samples/bpf/test_lru_dist In file included from ../include/uapi/linux/posix_types.h:5:0, from ../include/uapi/linux/types.h:14, from ../samples/bpf/test_lru_dist.c:9: ../include/uapi/linux/stddef.h:2:34: fatal error: linux/compiler_types.h: No such file or directory #include <linux/compiler_types.h> ^ compilation terminated.
while I don't see any build issues without this patch in bpf tree. Strangely current bpf-next tree fails with: parse_varlen.c:111:8: error: redefinition of 'vlan_hdr' but none of the other errors you mentioned.
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