cppharfbuzz/harfbuzz #5683Not a task: already works

[subset] multiple definition compilation errors on linking to another library

envgap__harfbuzz__harfbuzz-5683

Original GitHub issue ↗Dated source checkout ↗Opened 2025-12-15

01 / FAILURE SIGNATURE

As reported upstream

No identifying execution failure has been captured.

Not a benchmark task.

The project already builds and runs before the fix, so there is nothing to repair.

02 / ENVIRONMENT RECIPE

Base commit: cdbe72ca8bf2c077e91ae10c4e428e1183d7d5ec
Manifest: CMakeLists.txt
Reproduce: Awaiting issue-specific recipe
Run under trace: Awaiting a meaningful runtime command

03 / ORIGINAL ISSUE TEXT

harfbuzz/harfbuzz #5683 · read the original issue

I am receiving multiple definition errors on linking static build of harfbuzz-subset into my own library.

It would appear that while harfbuzz-subset links harfbuzz, both target also share a small number of source files (for harfbuzz-subset defined directly in CMakeLists, for harfbuzz listed in amalgamated harfbuzz.cc).
Snippet from CMakeLists.txt:
```
set (subset_project_sources
     ${PROJECT_SOURCE_DIR}/src/hb-number.cc
     ...
     ${PROJECT_SOURCE_DIR}/src/hb-ot-cff1-table.cc
     ${PROJECT_SOURCE_DIR}/src/hb-ot-cff2-table.cc
     ...
     ${PROJECT_SOURCE_DIR}/src/hb-static.cc
     ...
```


There must be something I am missing here as to the reasons why it is setup this way, right? Or?

I made my own fork which simply doesn't include these 4 files in harfbuzz-subset and it seems to both compile and work fine then ...

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