puma gem - Failed to build gem native extension - puma

Question

I was getting the following error while installing puma gem
$ gem install puma
Fetching: puma-2.11.2.gem (100%)
Building native extensions. This could take a while...
ERROR: Error installing puma:
ERROR: Failed to build gem native extension.
ruby extconf.rb
checking for BIO_read() in -lcrypto... no
checking for BIO_read() in -llibeay32... no
*** extconf.rb failed ***

Answer 1

Try the following
gem install puma -- --with-cppflags=-I/usr/local/opt/openssl/include
bundle install
You can also specify the gem version, like the following:
gem install puma -v '2.11.3' -- --with-cppflags=-I/usr/local/opt/openssl/include

Answer 2

I'm on OS X 10.12.4 and the comment #mahi added worked for me:
gem install puma -v '3.6.0' -- --with-opt-dir=/usr/local/opt/openssl

Answer 3

Not my answer but this helped me install puma on macos (big sur) since there were warnings when building puma.
The command that I used is this:
gem install puma -- --with-cflags="-Wno-error=implicit-function-declaration"

Answer 4

libssl1.0-dev installing helped to me. Try
apt-get install libssl1.0-dev
and then
gem install puma

Answer 5

Have you tried
DISABLE_SSL=true gem install puma
Specify the version if you have version specific requirement like:
DISABLE_SSL=true gem install puma -v version_number

Answer 6

I had similar issue on OSx El Capitan. In order to fix the issue I had to do:
brew install openssl
brew link --force openssl

Answer 7

It could be an open ssl error
gem install puma -v 2.11.2 -- --with-opt-dir=/usr/local/opt/openssl

Answer 8

I've run into a similar error under Mac OS X 10.10.
Details in the mkmf.log showed that this was due to:
Agreeing to the Xcode/iOS license requires admin privileges, please
re-run as root via sudo.
Which was caused by the installation of a new version of Xcode.
This was easily solved by accepting the Xcode license from Apple:
sudo xcodebuild -license
Hope this might help someone in the future ;-)

Answer 9

When using bundler and homebrew:
$ bundle config build.puma --with-cppflags=-I$(brew --prefix openssl)/include
$ bundle install
I copied and adapted this answer from Lloeki here: https://stackoverflow.com/a/31516586/704499

Answer 10

The gem is looking for ssl libraries. So we have to provide the path to the lib containing the ssl lib
e.g. /usr/share/openssl
In my case the the ssl lib "libcrypto" was in /usr/local/lib. So let's pass /usr/local to it (excluding lib word).
For gem install
gem install puma -- --with-opt-dir=/usr/local
For bundle install
bundle config build.puma --with-opt-dir=/usr/local
bundle install
notice the name build.puma. where puma is the name of the gem.
The build config command adds the following to ~/.bundle/config
---
BUNDLE_BUILD__PUMA: "--with-opt-dir=/usr/local"

Answer 11

I had to do this beforehand: sudo apt-get install libgmp3-dev

Answer 12

Run brew info openssl and follow the instructions there. Do not try to --force link the latest openssl with the one that comes installed with OSX by default. (0.9.8)
Specifically it'll ask you to add the Homebrew version of openssl (should be 1.0.2 as of this date) into your $PATH.
echo 'export PATH="/usr/local/opt/openssl/bin:$PATH"' >> ~/.bash_profile
Note: Make sure to remove any export PATH lines from the bash_profile, since this line above exports it for you appending the rest of the $PATH variable to the end. To view the bash profile use vi ~/.bash_profile
This fixed the problems for installing ruby gems that require compilation. (Puma in this case)

Answer 13

Install these packages.
apt-get install openssl ruby-openssl libssl-dev