我知道这很简单，但我就是想不通。我需要在 Ruby 中运行一个脚本，它需要 Nokogiri。我确实有一些其他语言的经验，但在 Ruby 方面没有。
这是我的系统：
Ruby 2.0.0-p195 (x64) 已安装 @ C:\Programs\RubyLanguage
Ruby Development Kit (mingw64-64-4.7.2-20130224-1432) 安装在@C :\Programs\RubyDevKit
当我运行时，gem install nokogiri我收到此错误：
ERROR: Error installing nokogiri:
The 'nokogiri' native gem requires installed build tools.
Please update your PATH to include build tools or download the DevKit
from 'http://rubyinstaller.org/downloads' and follow the instructions
at 'http://github.com/oneclick/rubyinstaller/wiki/Development-Kit'
很容易。所以我按照上面的链接做了第 3 步。但是第 4 步说生成“config.yml”。所以我做了。现在该文件是一个带有一些注释的空列表。由于上面的错误，我仍然无法安装 Nokogiri，而且我似乎无法使用 DevKit 。我要说的是开发工具包安装中的步骤对我来说不够清楚。
现在更新它说 Nokogiri 的安装失败（DevKit Works 根据步骤 5：安装 json-1.8.0 1 gem 的安装文档）
mkmf.log: package configuration for libxslt is not found
package configuration for libxml-2.0 is not found
package configuration for libiconv is not found
find_header: checking for libxml/parser.h... -------------------- no
"x86_64-w64-mingw32-gcc -o conftest.exe -IC:/Programs/RubyLanguage/include/ruby-2.0.0/x64-mingw32 -IC:/Programs/RubyLanguage/include/ruby-2.0.0/ruby/backward -IC:/Programs/RubyLanguage/include/ruby-2.0.0 -I. -IC:/Programs/RubyLanguage/include/libxml2 -IC:/Programs/RubyLanguage/include -DFD_SETSIZE=2048 -D_WIN32_WINNT=0x0501 -D_FILE_OFFSET_BITS=64 -O3 -fno-omit-frame-pointer -fno-fast-math -g -Wall -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wunused-variable -Wpointer-arith -Wwrite-strings -Wdeclaration-after-statement -Wimplicit-function-declaration -DXP_WIN -DXP_WIN32 -DUSE_INCLUDED_VASPRINTF -O3 -Wall -Wcast-qual -Wwrite-strings -Wconversion -Wmissing-noreturn -Winline conftest.c -L. -LC:/Programs/RubyLanguage/lib -LC:/Programs/RubyLanguage/lib -L. -lx64-msvcrt-ruby200 -lshell32 -lws2_32 -limagehlp -lshlwapi "
In file included from C:/Programs/RubyLanguage/include/ruby-2.0.0/ruby/defines.h:153:0,
from C:/Programs/RubyLanguage/include/ruby-2.0.0/ruby/ruby.h:70,
from C:/Programs/RubyLanguage/include/ruby-2.0.0/ruby.h:33,
from conftest.c:1:
C:/Programs/RubyLanguage/include/ruby-2.0.0/ruby/win32.h: In function 'rb_w32_pow':
C:/Programs/RubyLanguage/include/ruby-2.0.0/ruby/win32.h:776:16: warning: conversion to 'double' from 'long double' may alter its value [-Wconversion]
In file included from C:/Programs/RubyLanguage/include/ruby-2.0.0/ruby.h:33:0,
from conftest.c:1:
C:/Programs/RubyLanguage/include/ruby-2.0.0/ruby/ruby.h: In function 'rb_float_value':
C:/Programs/RubyLanguage/include/ruby-2.0.0/ruby/ruby.h:777:6: warning: negative integer implicitly converted to unsigned type [-Wsign-conversion]
C:/Programs/RubyLanguage/include/ruby-2.0.0/ruby/ruby.h:777:6: warning: negative integer implicitly converted to unsigned type [-Wsign-conversion]
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <winsock2.h>
4: #include <windows.h>
5: int main(int argc, char **argv)
6: {
7: return 0;
8: }
/* end */
"x86_64-w64-mingw32-gcc -E -IC:/Programs/RubyLanguage/include/ruby-2.0.0/x64-mingw32 -IC:/Programs/RubyLanguage/include/ruby-2.0.0/ruby/backward -IC:/Programs/RubyLanguage/include/ruby-2.0.0 -I. -IC:/Programs/RubyLanguage/include/libxml2 -IC:/Programs/RubyLanguage/include -DFD_SETSIZE=2048 -D_WIN32_WINNT=0x0501 -D_FILE_OFFSET_BITS=64 -O3 -fno-omit-frame-pointer -fno-fast-math -g -Wall -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wunused-variable -Wpointer-arith -Wwrite-strings -Wdeclaration-after-statement -Wimplicit-function-declaration -DXP_WIN -DXP_WIN32 -DUSE_INCLUDED_VASPRINTF -O3 -Wall -Wcast-qual -Wwrite-strings -Wconversion -Wmissing-noreturn -Winline conftest.c -o conftest.i"
conftest.c:5:27: fatal error: libxml/parser.h: No such file or directory
compilation terminated.
checked program was:
/* begin */
1: #include "ruby.h"
2:
3: #include <winsock2.h>
4: #include <windows.h>
5: #include <libxml/parser.h>
/* end */
命令日志
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\Users\SEPEHR>gem install nokogiri
Temporarily enhancing PATH to include DevKit...
Building native extensions. This could take a while...
ERROR: Error installing nokogiri:
ERROR: Failed to build gem native extension.
C:/Programs/RubyLanguage/bin/ruby.exe extconf.rb
checking for libxml/parser.h... no
-----
libxml2 is missing. please visit http://nokogiri.org/tutorials/installing_nokog
iri.html for help with installing dependencies.
-----
*** 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=C:/Programs/RubyLanguage/bin/ruby
--with-zlib-dir
--without-zlib-dir
--with-zlib-include
--without-zlib-include=${zlib-dir}/include
--with-zlib-lib
--without-zlib-lib=${zlib-dir}/lib
--with-iconv-dir
--without-iconv-dir
--with-iconv-include
--without-iconv-include=${iconv-dir}/include
--with-iconv-lib
--without-iconv-lib=${iconv-dir}/lib
--with-xml2-dir
--without-xml2-dir
--with-xml2-include
--without-xml2-include=${xml2-dir}/include
--with-xml2-lib
--without-xml2-lib=${xml2-dir}/lib
--with-xslt-dir
--without-xslt-dir
--with-xslt-include
--without-xslt-include=${xslt-dir}/include
--with-xslt-lib
--without-xslt-lib=${xslt-dir}/lib
--with-libxslt-config
--without-libxslt-config
--with-pkg-config
--without-pkg-config
--with-libxml-2.0-config
--without-libxml-2.0-config
--with-pkg-config
--without-pkg-config
--with-libiconv-config
--without-libiconv-config
--with-pkg-config
--without-pkg-config
Gem files will remain installed in C:/Programs/RubyLanguage/lib/ruby/gems/2.0.0/
gems/nokogiri-1.6.0 for inspection.
Results logged to C:/Programs/RubyLanguage/lib/ruby/gems/2.0.0/gems/nokogiri-1.6
.0/ext/nokogiri/gem_make.out