Sober7135 commented on PR #857:
URL:
https://github.com/apache/incubator-graphar/pull/857#issuecomment-3907885119
Actually, I’m not very familiar with dependency handling, so this is a bit
of an immature/personal suggestion.
Maybe we should rely fully on pkg-config, rather than `ARROW_HOME` and
`ARROW_LIB_DIR`, since:
- Arrow always provides a *.pc file.
- We can get `CMAKE_PREFIX_PATH` via `pkg-config --variable=prefix arrow`
(in Rust: `pkg_config::get_variable("arrow", "prefix")`).
- We can link Arrow via:
`pkg_config::Config::new().statik(true).cargo_metadata(true)`
If the `*.pc` file isn’t in a standard location (e.g.
`/usr/share/pkgconfig`), we can set `PKG_CONFIG_PATH`.
For example:
For example, if Arrow is installed at `/opt/arrow` and the `pkgconfig` files
are under `/opt/arrow/lib64/pkgconfig`:
```bash
export PKG_CONFIG_PATH="/opt/arrow/lib64/pkgconfig:${PKG_CONFIG_PATH}" # set
`PKG_CONFIG_PATH`
pkg-config --variable=prefix arrow
# output: /opt/arrow
```
Any thoughts?
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