eunomia-bpf / eunomia-bpf/bpf-developer-tutorial
[BUG] Cannot compile <9-runqlat>'s code in Ubuntu 22.04
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描述
Error message:
```
INFO [ecc_rs::bpf_compiler] Compiling bpf object...
error: unknown argument: '-target bpf'
/home/runjie/Desktop/bpf-developer-tutorial/src/9-runqlat/core_fixes.bpf.h:28:6: error: use of unknown builtin '__builtin_preserve_field_info' [-Wimplicit-function-declaration]
/home/runjie/Desktop/bpf-developer-tutorial/src/9-runqlat/core_fixes.bpf.h:51:6: error: use of unknown builtin '__builtin_preserve_field_info' [-Wimplicit-function-declaration]
/home/runjie/Desktop/bpf-developer-tutorial/src/9-runqlat/core_fixes.bpf.h:79:6: error: use of unknown builtin '__builtin_preserve_type_info' [-Wimplicit-function-declaration]
/home/runjie/Desktop/bpf-developer-tutorial/src/9-runqlat/core_fixes.bpf.h:79:6: warning: indirection of non-volatile null pointer will be deleted, not trap [-Wnull-dereference]
/home/runjie/Desktop/bpf-developer-tutorial/src/9-runqlat/core_fixes.bpf.h:79:6: note: consider using __builtin_trap() or qualifying pointer with 'volatile'
/home/runjie/Desktop/bpf-developer-tutorial/src/9-runqlat/core_fixes.bpf.h:107:6: error: use of unknown builtin '__builtin_preserve_field_info' [-Wimplicit-function-declaration]
INFO [ecc_rs::bpf_compiler] Generating export types...
INFO [ecc_rs::bpf_compiler] Generating package json..
INFO [ecc_rs::bpf_compiler] Packing ebpf object and config into package.json..
```
My clang version is clang 14, which is default clang version in Ubuntu 22.04. I also try to use clang 16. However, the error message is same.
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