redmine问题集锦02

1.ERROR:  While executing gem ... (Gem::Exception)    Unable to require openssl, install OpenSSL and rebuild ruby (preferred) or use non-HTTPS sources

方法：

进入ruby源码解压包，进入ruby 源码包下的  ext/openssl ，用ruby自带的openssl编译，而不是yum 的openssl

cd /root/ruby-2.1.5/ext/openssl ruby extconf.rb 成功... make 报错.... make: *** No rule to make target `/thread_native.h', needed by `ossl.o'.  Stop. 解决方法： 打开Makefile vim Makefile 加入第三行路径，也就是【top_srcdir = /root/ruby-2.1.5】 srcdir = . topdir = /usr/local/ruby/include/ruby-2.1.0 top_srcdir = /root/ruby-2.1.5 hdrdir = $(topdir) 保存退出，make clean， 重新make,成功， make install 成功 [root@mysql openssl]# make  linking shared-object openssl.so [root@mysql openssl]# make install /usr/bin/install -c -m 0755 openssl.so /usr/local/ruby/lib/ruby/site_ruby/2.1.0/x86_64-linux installing default openssl libraries

2.

 gem install mysql2

Fetching: mysql2-0.4.3.gem (100%) Building native extensions.  This could take a while... ERROR:  Error installing mysql2:	ERROR: Failed to build gem native extension.     /usr/local/ruby/bin/ruby -r ./siteconf20160321-3049-192s9jh.rb extconf.rb checking for ruby/thread.h... yes checking for rb_thread_call_without_gvl() in ruby/thread.h... yes checking for rb_thread_blocking_region()... yes checking for rb_wait_for_single_fd()... yes checking for rb_hash_dup()... yes checking for rb_intern3()... yes checking for mysql_query() in -lmysqlclient... no ----- mysql client is missing. You may need to 'apt-get install libmysqlclient-dev' or 'yum install mysql-devel', 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/ruby/bin/ruby	--with-mysql-dir	--without-mysql-dir	--with-mysql-include	--without-mysql-include=${mysql-dir}/include	--with-mysql-lib	--without-mysql-lib=${mysql-dir}/lib	--with-mysql-config	--without-mysql-config	--with-mysql-dir	--without-mysql-dir	--with-mysql-include	--without-mysql-include=${mysql-dir}/include	--with-mysql-lib	--without-mysql-lib=${mysql-dir}/lib	--with-mysqlclientlib	--without-mysqlclientlib

已经讲的很清楚了，安装mysql-devel

yum install mysql-devel