Ruby 2.2.1 is failing on install on mac-CodePudding

I have an older app that I constructed with ruby 2.2.1 I know it is past EOL but I need to get the app running so I can upgrade it. I am installing with rbenv but when I install I get this error.

Downloading openssl-1.0.2u.tar.gz...
-> https://dqw8nmjcqpjn7.cloudfront.net/ecd0c6ffb493dd06707d38b14bb4d8c2288bb7033735606569d8f90f89669d16
Installing openssl-1.0.2u...
Installed openssl-1.0.2u to /Users/arthurveal/.rbenv/versions/2.2.10

Downloading ruby-2.2.10.tar.bz2...
-> https://cache.ruby-lang.org/pub/ruby/2.2/ruby-2.2.10.tar.bz2
Installing ruby-2.2.10...

WARNING: ruby-2.2.10 is past its end of life and is now unsupported.
It no longer receives bug fixes or critical security updates.

ruby-build: using readline from homebrew

BUILD FAILED (macOS 12.5 using ruby-build 20220726)

Inspect or clean up the working tree at /var/folders/c_/vydvf3y11v10dzyyp87nqrw40000gn/T/ruby-build.20220813181950.74610.xtMp6B
Results logged to /var/folders/c_/vydvf3y11v10dzyyp87nqrw40000gn/T/ruby-build.20220813181950.74610.log

Last 10 log lines:
    rb_ivar_set(enumerator, rb_intern("slicewhen_pred"), pred);
                            ^~~~~~~~~~~~~~~~~~~~~~~~~~~
./include/ruby/ruby.h:1475:51: note: expanded from macro 'rb_intern'
        __extension__ (CONST_ID_CACHE((ID), (str))) : \
                                                  ^
28 warnings generated.
6 warnings generated.
6 warnings generated.
52 warnings generated.
20 warnings generated.

Here is the full error log. I am looking for an option to allow this ruby version to run.

Here is the full error log.

CodePudding user response：

The offending error in the full log seems to be

encoding.c:825:2: error: implicit declaration of function 'rb_str_change_terminator_length' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
        rb_str_change_terminator_length(obj, oldtermlen, termlen);

which seems similar to what was discussed in https://github.com/rbenv/ruby-build/discussions/1854 and https://github.com/rbenv/ruby-build/issues/1489 .

In that case, this might help:

CFLAGS="-Wno-error=implicit-function-declaration" rbenv install 2.2.1