我正在尝试使用以下命令安装RmMagic:
gem install rmagick -v=2.12.2
运行此命令后,我收到一些错误:
Temporarily enhancing PATH to include DevKit... Building native extensions. This could take a while... ERROR: Error installing rmagick: ERROR: Failed to build gem native extension. D:/ruby/bin/ruby.exe extconf.rb checking for Ruby version >= 1.8.5... yes Invalid drive specification. Unable to get ImageMagick version *** 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=D:/ruby/bin/ruby Gem files will remain installed in D:/ruby/lib/ruby/gems/1.8/gems/rmagick-2 .12.2 for inspection. Results logged to D:/ruby/lib/ruby/gems/1.8/gems/rmagick-2.12.2/ext/RMagick /gem_make.out
请在这方面帮助我。提前谢谢。
答案 0 :(得分:3)
我遇到了与rmagick相同的问题来解决这个添加系统环境变量
CLASSPATH .;C:\ImageMagick-6.5.6-Q8\include
lib C:\ImageMagick-6.5.6-Q8\lib
然后做
gem install rmagick --platform=ruby -- --with-opt-lib=C:\ImageMagick-6.5.6-Q8\lib --with-opt-include=C:\ImageMagick-6.5.6-Q8\include
答案 1 :(得分:0)
这是多么痛苦......我绝对需要按照Mukesh的建议同时执行系统环境变量和命令的特定语法
澄清两个步骤:(对于像我这样的其他新手)
点击“计算机”的上下文菜单中的属性,点击“高级系统设置”, 单击“环境变量”,单击“系统变量”下的“新建”,
使用CLASSPATH作为变量名称和值使用:
.;C:\ImageMagick-6.9.0-Q16\include;lib C:\ImageMagick-6.9.0-Q16\lib
然后使用Ruby终端以管理员身份运行命令提示符并执行:
gem install rmagick -v '2.13.4' -- --with-opt-lib=C:\ImageMagick-6.9.0-Q16\lib --with-opt-include=C:\ImageMagick-6.9.0-Q16\include
(***确保在必要时更新Variable和gem命令中的版本号)