From: "alanwu (Alan Wu) via ruby-core" <ruby-core@...>
Date: 2025-08-27T21:52:25+00:00
Subject: [ruby-core:123094] [Ruby Bug#21546] `prefix` in ruby.pc is wrong when `--enable-load-relative`

Issue #21546 has been updated by alanwu (Alan Wu).

Backport changed from 3.2: REQUIRED, 3.3: REQUIRED, 3.4: REQUIRED to 3.2: REQUIRED, 3.3: REQUIRED, 3.4: DONE

3.4 backport done in commit:d49c7d0661faa964099b8c28ac316e33ae641051

----------------------------------------
Bug #21546: `prefix` in ruby.pc is wrong when `--enable-load-relative`
https://bugs.ruby-lang.org/issues/21546#change-114408

* Author: nobu (Nobuyoshi Nakada)
* Status: Closed
* Backport: 3.2: REQUIRED, 3.3: REQUIRED, 3.4: DONE
----------------------------------------
It is relocatable and should reflect the installed location.

```console
$ export PKG_CONFIG_PATH=/opt/local/lib/pkgconfig${PKG_CONFIG_PATH:+:$PKG_CONFIG_PATH}
$ pkg-config --variable=prefix ruby-3.5
/.
```

Currently `pkg-config --define-prefix` works because it overrides the `prefix` value.

```console
$ pkg-config --variable=prefix --define-prefix ruby-3.5
/opt/local
```



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