Installing Ruby 2.3.6 fails (related to OpenSSL 1.0.2o)

[europ]

Installing Ruby 2.3.6 always results in a fail.

Environment:
OS = Ubuntu 16.04.4 x86_64 Linux
rbenv = 2.5.1
ruby-build = 20180601-6-ge73041e

The previous installations failed on an invalid OpenSSL version (more specifically on 1.1).

OpenSSL "/usr/include/openssl/asn1_mac.h:10:2: error: #error This file is obsolete; please update your software."

I had the exactly same error message as it is described in #1207.

The openssl extension of Ruby version before 2.4 is not compatible with OpenSSL 1.1.x.

Quoted from the Wiki.

So, I installed OpenSSL_1_0_2o (OpenSSL 1.0.x is recommended) and specified the OpenSSL location manually by:

export RUBY_CONFIGURE_OPTS=--with-openssl-dir=/usr/local/ssl

Executing the following command:

rbenv install 2.3.6

Will result in a fail:

Installing ruby-2.3.6...

BUILD FAILED (Ubuntu 16.04 using ruby-build 20180601-6-ge73041e)

Inspect or clean up the working tree at /tmp/ruby-build.20180617211459.12406
Results logged to /tmp/ruby-build.20180617211459.12406.log

Last 10 log lines:
installing default bigdecimal libraries
make[2]: Leaving directory '/tmp/ruby-build.20180617211459.12406/ruby-2.3.6/ext/dbm'
make[2]: Leaving directory '/tmp/ruby-build.20180617211459.12406/ruby-2.3.6/ext/-test-/string'
linking shared-object bigdecimal.so
make[2]: Leaving directory '/tmp/ruby-build.20180617211459.12406/ruby-2.3.6/ext/bigdecimal'
linking shared-object date_core.so
make[2]: Leaving directory '/tmp/ruby-build.20180617211459.12406/ruby-2.3.6/ext/date'
make[1]: Leaving directory '/tmp/ruby-build.20180617211459.12406/ruby-2.3.6'
uncommon.mk:203: recipe for target 'build-ext' failed
make: *** [build-ext] Error 2

The log file:
/tmp/ruby-build.20180617211459.12406.log

The issue may be related to the #1146 which was solved by specifying the OpenSSL directory via --with-openssl-dir=/usr/local/ssl in CONFIGURE_OPTS environment variable.

Installing any other ruby versions 2.4. and above such as 2.5.1 were successfully installed.

[p-mongo]

What does this yield?

find /usr/local/ssl |grep libcrypto

[europ]

@p-mongo the result of find /usr/local/ssl | grep libcrypto is:

/usr/local/ssl/lib/pkgconfig/libcrypto.pc
/usr/local/ssl/lib/libcrypto.a

[p-mongo]

You built openssl without shared libraries. My reading of their readme suggests this isn't the default behavior. How was openssl built?

[europ]

I followed the instructions in INSTALL file - section Quick Start.

  $ ./config
  $ make
  $ make test
  $ make install

Every step was successful.

[p-mongo]

My ubuntu 16.04 comes with openssl 1.0.2, not 1.1. Regardless, try this:

./config shared
make clean

And then redo everything else.