masaori335 opened a new pull request, #12017:
URL: https://github.com/apache/trafficserver/pull/12017
# Problem
`traffic_crashlog` uses nongnu libunwind and including `libunwind.h` and
`libunwind-ptrace.h` header. OTOH, LLVM has its own `libunwind.h`. Sometime,
CMake pickup LLVM's `libunwind.h` and making error like below.
```
In file included from /workspace/src/traffic_crashlog/backtrace.cc:39:
/usr/include/libunwind-ptrace.h:57:8: error: unknown type name
'unw_accessors_t'; did you mean 'unw_cursor_t'?
extern unw_accessors_t _UPT_accessors;
^
/opt/llvm/include/libunwind.h:78:29: note: 'unw_cursor_t' declared here
typedef struct unw_cursor_t unw_cursor_t;
^
```
# Approach
Force CMake to set `${unwind_INCLUDE_DIRS}` first and pickup nongnu
libunwind's `libunwind.h` header.
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