目前在看《agile web development with Rails,3rd》。
书上用的是sqlite3，想一板一眼的跟着书过一遍，可是安装sqlite-ruby时出错。如下：
[code="java"]
gem install -l sqlite3-ruby-1.2.1.gem
Building native extensions. This could take a while...
ERROR: Error installing sqlite3-ruby-1.2.1.gem:
ERROR: Failed to build gem native extension.
/usr/bin/ruby1.8 extconf.rb install -l sqlite3-ruby-1.2.1.gem
checking for sqlite3.h... no
make
make: *** 没有规则可以创建“sqlite3_api_wrap.o”需要的目标“ruby.h”。 停止。
Gem files will remain installed in /usr/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.2.1 for inspection.
Results logged to /usr/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.2.1/ext/sqlite3_api/gem_make.out
[/code]
google过了，没找到靠谱的解答，希望大家帮忙，谢谢。
