Bug #14234: Failed to build on CentOS 6.9

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: 2.5.0
• Backport: 2.3: DONTNEED, 2.4: DONTNEED, 2.5: DONE

[miyohide (Hidenori Miyoshi)]

CentOS 6.9（gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-18)） にてrbenv - ruby-buildを使ってRuby 2.5.0のビルドを試みると失敗します。

[~]$ rbenv install 2.5.0
Downloading ruby-2.5.0.tar.bz2...
-> https://cache.ruby-lang.org/pub/ruby/2.5/ruby-2.5.0.tar.bz2
Installing ruby-2.5.0...

BUILD FAILED (CentOS release 6.9 (Final) using ruby-build 20171215-6-g3bd8c9a)

Inspect or clean up the working tree at /tmp/ruby-build.20171226075813.10682
Results logged to /tmp/ruby-build.20171226075813.10682.log

Last 10 log lines:
vm_eval.c: In function ‘eval_string_with_cref’:
vm_eval.c:1352: 警告: ‘_ec’ may be used uninitialized in this function
vm_eval.c: In function ‘rb_eval_cmd’:
vm_eval.c:1518: 警告: ‘safe’ may be used uninitialized in this function
vm_eval.c:1525: 警告: ‘_ec’ may be used uninitialized in this function
トップレベル:
cc1: 警告: unrecognized command line option "-Wno-self-assign"
cc1: 警告: unrecognized command line option "-Wno-constant-logical-operand"
cc1: 警告: unrecognized command line option "-Wno-parentheses-equality"
cc1: 警告: unrecognized command line option "-Wno-tautological-compare"
[~]$

出力されたログファイル（/tmp/ruby-build.20171226075813.10682）からエラー出力箇所の抜粋したものが以下のものです。ログ全体は、添付ファイルにて。

prelude.c: In function ‘prelude_eval’:
prelude.c:204: error: #pragma GCC diagnostic not allowed inside functions
prelude.c:205: error: #pragma GCC diagnostic not allowed inside functions
prelude.c:221: error: #pragma GCC diagnostic not allowed inside functions
トップレベル:
cc1: 警告: unrecognized command line option "-Wno-self-assign"
cc1: 警告: unrecognized command line option "-Wno-constant-logical-operand"
cc1: 警告: unrecognized command line option "-Wno-parentheses-equality"
cc1: 警告: unrecognized command line option "-Wno-tautological-compare"
make: *** [prelude.o] エラー 1
make: *** 未完了のジョブを待っています....

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset trunk|r61478.

---

prelude.c.tmpl: get rid of errors with old gcc

• template/prelude.c.tmpl: moved diagnostic pragmas outside
  prelude_eval() for very old gcc. [ruby-core:84449] [Bug #14234]

[hsbt (Hiroshi SHIBATA)]

• Backport changed from 2.3: UNKNOWN, 2.4: UNKNOWN, 2.5: UNKNOWN to 2.3: DONTNEED, 2.4: DONTNEED, 2.5: REQUIRED

[hsbt (Hiroshi SHIBATA)]

• Has duplicate Bug #14242: Fails to build ruby 2.5.0 on CentOS 6 added

[naruse (Yui NARUSE)]

• Backport changed from 2.3: DONTNEED, 2.4: DONTNEED, 2.5: REQUIRED to 2.3: DONTNEED, 2.4: DONTNEED, 2.5: DONE

ruby_2_5 r61496 merged revision(s) 61478.

[ewaters (Evan Waters)]

Do we know when the next version of ruby is likely to be released, and if it will include this patch? I'm trying to build ruby 2.5.0 for CentOS 6 and running into this same issue.

[shyouhei (Shyouhei Urabe)]

ewaters (Evan Waters) wrote:

Do we know when the next version of ruby is likely to be released, and if it will include this patch? I'm trying to build ruby 2.5.0 for CentOS 6 and running into this same issue.

There are good news and bad news.

The good news is the fix has already merged into 2.5 so next release includes it.
However, there can be security releases at any unpredictable moment. So no, we can't tell you when the next version will come.