I can't use esp-clang build idf project (IDFGH-14858) (IEC-280)

[NewNoob2002]

Answers checklist.

• I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
• I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
• I have searched the issue tracker for a similar issue and not found a similar issue.

IDF version.

v5.4

Operating System used.

Linux

How did you build your project?

VS Code IDE

If you are using Windows, please specify command line type.

None

What is the expected behavior?

should same to gcc, can compile successfully.

What is the actual behavior?

In the first, it will show no STDC_HOSTED, i see this is in CMakeLists.txt , and i try delete it, then show the error in PRIu64 like below.

the same project and same files, i can't use clang to build the idf project which include the espressif__cbor component, it will show the macro error in PRIu64

Steps to reproduce.

1. create v5.4 project
2. add espressif__cbor component
3. build in esp-clang
   ...

Build or installation Logs.

<command line>:9:9: error: undefining builtin macro [-Werror,-Wbuiltin-macro-redefined]
    9 | #undef  __STDC_HOSTED__

After delete target_compile_options(${COMPONENT_LIB} PRIVATE "-U __STDC_HOSTED__"):

/home/gtc/workspace/S3project/managed_components/espressif__cbor/tinycbor/src/cbortojson.c:356:36: error: expected ')'
  356 |         if (fprintf(out, "{\"tag%" PRIu64 "\":", tag) < 0)
      |                                    ^
/home/gtc/workspace/S3project/managed_components/espressif__cbor/tinycbor/src/cbortojson.c:356:20: note: to match this '('
  356 |         if (fprintf(out, "{\"tag%" PRIu64 "\":", tag) < 0)
      |                    ^
/home/gtc/workspace/S3project/managed_components/espressif__cbor/tinycbor/src/cbortojson.c:364:40: error: expected ')'
  364 |             if (fprintf(out, ",\"tag%" PRIu64 "$cbor\":{", tag) < 0 ||
      |                                        ^
/home/gtc/workspace/S3project/managed_components/espressif__cbor/tinycbor/src/cbortojson.c:364:24: note: to match this '('
  364 |             if (fprintf(out, ",\"tag%" PRIu64 "$cbor\":{", tag) < 0 ||
      |                        ^
/home/gtc/workspace/S3project/managed_components/espressif__cbor/tinycbor/src/cbortojson.c:423:21: error: call to undeclared function 'cbor_value_to_pretty_advance'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
  423 |     CborError err = cbor_value_to_pretty_advance(memstream, it);
      |                     ^
/home/gtc/workspace/S3project/managed_components/espressif__cbor/tinycbor/src/cbortojson.c:423:21: note: did you mean 'cbor_value_to_json_advance'?
/home/gtc/workspace/S3project/managed_components/espressif__cbor/tinycbor/src/cborjson.h:50:20: note: 'cbor_value_to_json_advance' declared here
   50 | CBOR_API CborError cbor_value_to_json_advance(FILE *out, CborValue *value, int flags);
      |                    ^
/home/gtc/workspace/S3project/managed_components/espressif__cbor/tinycbor/src/cbortojson.c:642:40: error: expected ')'
  642 |                 r = fprintf(out, "%s%" PRIu64, val < 0 ? "-" : "", ival);
      |                                        ^
/home/gtc/workspace/S3project/managed_components/espressif__cbor/tinycbor/src/cbortojson.c:642:28: note: to match this '('
  642 |                 r = fprintf(out, "%s%" PRIu64, val < 0 ? "-" : "", ival);

More Information.

No response

[NewNoob2002]

@igrr hello, is this bug for cbor component?

[NewNoob2002]

when i don't add cbor component, i can use esp-clang build esp-idf-v5.4 project successfully

[igrr]

I think it's an issue with Cbor component, yes. It probably worked with Clang some time in the past, but since we don't run CI builds with Clang for idf-extra-components, this use case got broken.

[igrr]

cc @hmalpani

[NewNoob2002]

ok, thanks, is it possible to fix this? I'd really appreciate it if so, as I'm currently learning to compile projects using llvm and clangd.