Re: [I] [R] Install from sources on Alpine Linux (error: 'int32_t' does not name a type) [arrow]

["bastistician (via GitHub)" <gi...@apache.org>]

bastistician commented on issue #46769:
URL: https://github.com/apache/arrow/issues/46769#issuecomment-3468484960

   I can confirm that this bug still exists in arrow 22.
   To reproduce the compilation failure interactively, run the following inside `docker run --rm -it alpine`:
   
   ```sh
   apk add R R-doc R-dev g++ cmake bash
   export ARROW_R_DEV=true  # more extensive logging
   R -s -e 'install.packages("arrow", Ncpus = 4, repos = "https://cloud.R-project.org")'
   ```
   (NB: something in arrow seems to depend on a bash command, which should probably also be fixed.)
   
   [arrow.log](https://github.com/user-attachments/files/23238593/arrow.log)
   
   Even if installed, a system `re2-dev` is not used because the build script always chooses the bundled version by default (due to #39514):
   
   <https://github.com/apache/arrow/blob/430ad81c2b563bc2d57e81bef76da0c4bddc95e8/r/inst/build_arrow_static.sh#L104>
   
   Two possible workarounds:
   - `install.packages("arrow", configure.vars = list(arrow = "ARROW_WITH_RE2=OFF"))`
   - install `re2-dev` and use `install.packages("arrow", configure.vars = list(arrow = "re2_SOURCE=SYSTEM"))` (apparently undocumented)
   
   It appears that all other bundled dependencies used by default build fine under musl libc, but re2 doesn't. Can it be fixed?


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