在Windows上安装libbzip2

我试图在Windows 7上安装libbzip2。（其实我想安装wp2txt包，但似乎需要libbzip2）。 我按照Alex的建议安装了“Bzip2 for Windows”。 但我得到以下错误。

 C:\Users\John>gem install bzip2-ruby -- --with-bz2-include="C:\Program Files (x86)\GnuWin32\include" -- --with-bz2-lib="C:\Program Files (x86)\GnuWin32\lib" Temporarily enhancing PATH to include DevKit... Building native extensions. This could take a while... ERROR: Error installing bzip2-ruby: ERROR: Failed to build gem native extension. C:/RailsInstaller/Ruby1.9.3/bin/ruby.exe extconf.rb --with-bz2-include=C:\Program Files (x86)\GnuWin32\include -- --with-bz2-lib=C:\Program Files (x86)\GnuWin32\lib checking for bzlib.h... no checking for BZ2_bzWriteOpen() in -lbz2... no *** 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:/RailsInstaller/Ruby1.9.3/bin/ruby --with-bz2-dir --without-bz2-dir --with-bz2-include=${bz2-dir}/include --with-bz2-lib=${bz2-dir}/lib --with-bz2lib --without-bz2lib libbz2 not found, maybe try manually specifying --with-bz2-dir to find it? Gem files will remain installed in C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bzip2-ruby-0.2.7 for inspection. Results logged to C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bzip2-ruby-0.2.7/ext/gem_make.out 

Answer 1

有几个问题。

1）您需要安装bzip2库。 从Bzip2 for Windows ，Binaries下载压缩库。 将它们解压缩到某个目录，例如C：\ GnuWin32 \ bzip2-1.0.5-bin。 lib subdir应该包含libbz2.a，libbz2.def，libbz2.dll.a。 应将此路径（C：\ GnuWin32 \ bzip2-1.0.5-bin \ lib）提供给–with-bz2-lib。

2）根据作者github.com/brianmario （版本h缺席），包bzip2-ruby似乎还有一个未修复的错误。 所以你可以按照他的建议安装bzip2-ruby-rb20。

3）现在安装bzip2-ruby-rb20，为bzip2提供include和library dirs（安装在1中）：

 gem install bzip2-ruby-rb20 -- --with-bz2-include="C:\GnuWin32\bzip2-1.0.5-bin\include" -- --with-bz2-lib="C:\GnuWin32\bzip2-1.0.5-bin\lib" 

应该做的：“安装1个gem”