gem install mysql2 で下記のエラー。
gem install mysql2 -v '0.3.11'
Building native extensions. This could take a while...
ERROR: Error installing mysql2:
ERROR: Failed to build gem native extension.
/usr/local/ruby193/bin/ruby extconf.rb
checking for rb_thread_blocking_region()... yes
checking for rb_wait_for_single_fd()... yes
checking for mysql.h... no
checking for mysql/mysql.h... no
-----
mysql.h is missing. please check your installation of mysql and try again.
-----
*** 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/local/ruby193/bin/ruby
--with-mysql-config
--without-mysql-config
Gem files will remain installed in /usr/local/ruby193/lib/ruby/gems/1.9.1/gems/mysql2-0.3.11 for inspection.
Results logged to /usr/local/ruby193/lib/ruby/gems/1.9.1/gems/mysql2-0.3.11/ext/mysql2/gem_make.out
どうやら、mysql.h is missing とのこと。
でも、yumでインストールしたmysqlには、どうしても mysql.h が見つからない。
どうやら、下記のライブラリも必要なようであった。
mysql55-devel
yum --enablerepo=ius,epel install mysql55-devel Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: ftp.oss.eznetsols.org * epel: ftp.iij.ad.jp * extras: ftp.oss.eznetsols.org * ius: archive.linux.duke.edu * updates: ftp.oss.eznetsols.org Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package mysql55-devel.x86_64 0:5.5.28-2.ius.el5 set to be updated --> Finished Dependency Resolution Dependencies Resolved ===================================================================================================== Package Arch Version Repository Size ===================================================================================================== Installing: mysql55-devel x86_64 5.5.28-2.ius.el5 ius 190 k Transaction Summary ===================================================================================================== Install 1 Package(s) Upgrade 0 Package(s) Total download size: 190 k Is this ok [y/N]: y Downloading Packages: mysql55-devel-5.5.28-2.ius.el5.x86_64.rpm | 190 kB 00:00 Running rpm_check_debug Running Transaction Test Finished Transaction Test Transaction Test Succeeded Running Transaction Installing : mysql55-devel 1/1 Installed: mysql55-devel.x86_64 0:5.5.28-2.ius.el5 Complete!
再び、gem install mysql2。
gem install mysql2 -v '0.3.11' Building native extensions. This could take a while... Successfully installed mysql2-0.3.11 1 gem installed Installing ri documentation for mysql2-0.3.11... Installing RDoc documentation for mysql2-0.3.11...
上手くいったようです。