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doc/contributing.rdoc: Now ruby >= 2.2 or 2.3 is required to build ruby

This commit is contained in:
Yusuke Endoh 2020-06-10 09:52:54 +09:00
parent 41b8866e75
commit 8bee9e5cd5

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@ -260,8 +260,8 @@ run tests.
* autoconf - 2.67 or later, preferably 2.69.
* bison - 2.0 or later, preferably 3.4.
* gperf - 3.0.3 or later, preferably 3.1.
* ruby - Ruby itself is prerequisite in order to build Ruby from source. It
can be 1.8.
* ruby - Ruby itself is prerequisite in order to build Ruby from source.
You should use [a maintained version of Ruby](https://www.ruby-lang.org/en/downloads/).
You should also have access to development headers for the following
libraries, but these are not required: