Issue #9658 has been updated by Tomoyuki Chikanaga.

Backport changed from 2.0.0: UNKNOWN, 2.1: REQUIRED to 2.0.0: UNKNOWN, 2.1: DONE

Backported into `ruby_2_1` branch at r46402.

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Bug #9658: configure --with-opt-dir=dir と clang の組合せでビルドに失敗する
https://bugs.ruby-lang.org/issues/9658#change-47146

* Author: Akinori MUSHA
* Status: Closed
* Priority: Normal
* Assignee: Akinori MUSHA
* Category: build
* Target version: current: 2.2.0
* ruby -v: 2.1.0 and later
* Backport: 2.0.0: UNKNOWN, 2.1: DONE
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ruby 2.1以降で configure に --with-opt-dir=/opt/local を指定すると、

* checking for printf prefix for long long... が、 clang の吐く clang: warning: argument unused during compilation: '-I /opt/local/include' のせいで失敗し、 config.h に PRI_LL_PREFIX の定義が入らない

* compiling .../ext/-test-/num2int/num2int.c がこけてビルド失敗

という流れです。

パッチを添付します。

cf.
https://twitter.com/knu/status/421181635455766529
https://gist.github.com/knu/8330662
https://github.com/ruby/ruby/pull/571


---Files--------------------------------
571.patch (2.65 KB)


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