Tobias Klauser fe4eb069ed bpftool: Use linux/types.h from source tree for profiler build
When compiling bpftool on a system where the /usr/include/asm symlink
doesn't exist (e.g. on an Ubuntu system without gcc-multilib installed),
the build fails with:

    CLANG    skeleton/profiler.bpf.o
  In file included from skeleton/profiler.bpf.c:4:
  In file included from /usr/include/linux/bpf.h:11:
  /usr/include/linux/types.h:5:10: fatal error: 'asm/types.h' file not found
  #include <asm/types.h>
           ^~~~~~~~~~~~~
  1 error generated.
  make: *** [Makefile:123: skeleton/profiler.bpf.o] Error 1

This indicates that the build is using linux/types.h from system headers
instead of source tree headers.

To fix this, adjust the clang search path to include the necessary
headers from tools/testing/selftests/bpf/include/uapi and
tools/include/uapi. Also use __bitwise__ instead of __bitwise in
skeleton/profiler.h to avoid clashing with the definition in
tools/testing/selftests/bpf/include/uapi/linux/types.h.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/20200312130330.32239-1-tklauser@distanz.ch
2020-03-12 16:22:41 +01:00

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C

/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
#ifndef __PROFILER_H
#define __PROFILER_H
/* useful typedefs from vmlinux.h */
typedef signed char __s8;
typedef unsigned char __u8;
typedef short int __s16;
typedef short unsigned int __u16;
typedef int __s32;
typedef unsigned int __u32;
typedef long long int __s64;
typedef long long unsigned int __u64;
typedef __s8 s8;
typedef __u8 u8;
typedef __s16 s16;
typedef __u16 u16;
typedef __s32 s32;
typedef __u32 u32;
typedef __s64 s64;
typedef __u64 u64;
enum {
false = 0,
true = 1,
};
#ifdef __CHECKER__
#define __bitwise__ __attribute__((bitwise))
#else
#define __bitwise__
#endif
typedef __u16 __bitwise__ __le16;
typedef __u16 __bitwise__ __be16;
typedef __u32 __bitwise__ __le32;
typedef __u32 __bitwise__ __be32;
typedef __u64 __bitwise__ __le64;
typedef __u64 __bitwise__ __be64;
typedef __u16 __bitwise__ __sum16;
typedef __u32 __bitwise__ __wsum;
#endif /* __PROFILER_H */