Impossible d'installer des gemmes "mysql2, mariadb 10.1" dans Ubuntu 16.04 Xenial

Question

J'ai un serveur mariadb 10.1 de travail. J'installe ruby ​​2.3.0 sur Ubuntu 16.04. J'installe libmariadbd-dev et libmariadbclient-dev. Lorsque je tente "gem install mysql2", un message recive:

Building native extensions with: '--with-mysql-dir=/usr/local/mysql' 
This could take a while... 
ERROR: Error installing mysql2: 
     ERROR: Failed to build gem native extension. 

    current directory: /var/lib/gems/2.3.0/gems/mysql2-0.4.4/ext/mysql2 
/usr/bin/ruby2.3 -r ./siteconf20160615-5183-kj9yds.rb extconf.rb --with-mysql-dir=/usr/local/mysql 
checking for ruby/thread.h... *** extconf.rb failed *** 
Could not create Makefile due to some reason, probably lack of necessary 
libraries and/or headers. Check the mkmf.log file for more details. You may 
need configuration options. 

Provided configuration options: 
     --with-opt-dir 
     --without-opt-dir 
     --with-opt-include 
     --without-opt-include=${opt-dir}/include 
     --with-opt-lib 
     --without-opt-lib=${opt-dir}/lib 
     --with-make-prog 
     --without-make-prog 
     --srcdir=. 
     --curdir 
     --ruby=/usr/bin/$(RUBY_BASE_NAME)2.3 
/usr/lib/ruby/2.3.0/mkmf.rb:456:in `try_do': The compiler failed to generate an executable file. (RuntimeError) 
You have to install development tools first. 
     from /usr/lib/ruby/2.3.0/mkmf.rb:587:in `try_cpp' 
     from /usr/lib/ruby/2.3.0/mkmf.rb:1091:in `block in have_header' 
     from /usr/lib/ruby/2.3.0/mkmf.rb:942:in `block in checking_for' 
     from /usr/lib/ruby/2.3.0/mkmf.rb:350:in `block (2 levels) in postpone' 
     from /usr/lib/ruby/2.3.0/mkmf.rb:320:in `open' 
     from /usr/lib/ruby/2.3.0/mkmf.rb:350:in `block in postpone' 
     from /usr/lib/ruby/2.3.0/mkmf.rb:320:in `open' 
     from /usr/lib/ruby/2.3.0/mkmf.rb:346:in `postpone' 
     from /usr/lib/ruby/2.3.0/mkmf.rb:941:in `checking_for' 
     from /usr/lib/ruby/2.3.0/mkmf.rb:1090:in `have_header' 
     from extconf.rb:16:in `<main>' 

To see why this extension failed to compile, please check the mkmf.log which can be found here: 

    /var/lib/gems/2.3.0/extensions/x86_64-linux/2.3.0/mysql2-0.4.4/mkmf.log 

extconf failed, exit code 1 

Gem files will remain installed in /var/lib/gems/2.3.0/gems/mysql2-0.4.4 for inspection. 
Results logged to /var/lib/gems/2.3.0/extensions/x86_64-linux/2.3.0/mysql2-0.4.4/gem_make.out 

Et je ne peux pas trouver comment construire ce petit bijou.

Answer 1

Gem dans cette situation besoin de 3 paquets.

sudo apt-get install libnetcdf-dev libssl-dev libcrypto++-dev 

Answer 2

Ceci est pour mac mais vous devez changer le chemin:

gem uninstall mysql2 

intall MariaDB 10.1 paquets ssl andnecesaary ou peut-être ce ne sont pas nécessaires puis vérifiez le chemin vers les bibliothèques et les dossiers Tinal ont le même nom:

bundle config --local build.mysql2 "--with-mysql-config=/usr/local/Cellar/mariadb@10.1/10.1.29/bin/mysql_config --with-ldflags=-L/usr/local/opt/openssl/lib --with-cppflags=-I/usr/local/opt/openssl/include" 

ou sans le chemin ssl

bundle config --local build.mysql2 "--with-mysql-config=/usr/local/Cellar/mariadb@10.1/10.1.29/bin/mysql_config 

ou directement la pierre précieuse, mais si vous venez FDans MySQL est préférable de le faire avec paquet

gem install mysql2 -v 'x.y.z' -- --with-mysql-config=/usr/local/Cellar/mariadb@10.1/10.1.29/bin/mysql_config 

et enfin

bundle install