Milian Wolff df90cc41d6 perf tests: Fix compile when libunwind's unwind.h is available ... When cross compiling perf and I want to link against a self-compiled libunwind, I usually make the custom path where the libunwind headers exist visible by adding the libunwind prefix to the include path when compiling perf, i.e.: ~~~~~ $ ls $HOME/projects/compiled/other/include/ libunwind-coredump.h libunwind.h libunwind-x86_64.h libunwind-common.h libunwind-dynamic.h libunwind-ptrace.h unwind.h $ make EXTRA_CFLAGS="-I$HOME/projects/compiled/other/include/ ~~~~~~ Note the `unwind.h` header from libunwind which leads to compile errors when compiling tests/dwarf-unwind.c, since it shadows perf's util/unwind.h: ~~~~~ tests/dwarf-unwind.c:41:32: error: ‘struct unwind_entry’ declared inside parameter list will not be visible outside of this definition or declaration [-Werror] static int unwind_entry(struct unwind_entry *entry, void *arg) ^~~~~~~~~~~~ tests/dwarf-unwind.c: In function ‘unwind_entry’: tests/dwarf-unwind.c:44:22: error: dereferencing pointer to incomplete type ‘struct unwind_entry’ char *symbol = entry->sym ? entry->sym->name : NULL; ^~ tests/dwarf-unwind.c: In function ‘unwind_thread’: tests/dwarf-unwind.c:92:8: error: implicit declaration of function ‘unwind__get_entries’; did you mean ‘unwind_entry’? [-Werror=implicit-function-declaration] err = unwind__get_entries(unwind_entry, &cnt, thread, ^~~~~~~~~~~~~~~~~~~ unwind_entry tests/dwarf-unwind.c:92:8: error: nested extern declaration of ‘unwind__get_entries’ [-Werror=nested-externs] ~~~~~~ Fix this compile error by specificing an explicit include of perf's unwind.h in the util folder. Signed-off-by: Milian Wolff <milian.wolff@kdab.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Yao Jin <yao.jin@linux.intel.com> Link: http://lkml.kernel.org/r/20170906150209.12579-1-milian.wolff@kdab.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>		2017-09-12 12:34:02 -03:00
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