Ruby 如何解决Cygwin中找不到-lcrypt的问题？

我正在尝试使用Cygwin安装Jekyll。我导航到我的项目目录并运行：

gem install jekyll

有几个错误，但没有什么是我无法通过安装适当的软件包解决的，但有一个错误，我目前遇到了：

Building native extensions.  This could take a while...
  ERROR:  Error installing jekyll:
      ERROR: Failed to build gem native extension.

    /usr/bin/ruby.exe -r ./siteconf20150401-7872-17w9ed4.rb extconf.rb
creating Makefile

make "DESTDIR=" clean
rm -f
rm -f stemmer.so  *.o  *.bak mkmf.log .*.time

make "DESTDIR="
gcc -I. -I/usr/include/ruby-2.0.0 -I/usr/include/ruby-2.0.0/ruby/backward -I/usr/include/ruby-2.0.0 -I.    -ggdb -O2 -pipe -Wimplicit-function-declaration    -o porter.o -c porter.c
gcc -I. -I/usr/include/ruby-2.0.0 -I/usr/include/ruby-2.0.0/ruby/backward -I/usr/include/ruby-2.0.0 -I.    -ggdb -O2 -pipe -Wimplicit-function-declaration    -o porter_wrap.o -c porter_wrap.c
rm -f stemmer.so
gcc -shared -o stemmer.so porter.o porter_wrap.o -L. -L/usr/lib -L. -fstack-protector -Wl,--export-all-symbols -Wl,--enable-auto-image-base,--enable-auto-import    -lruby200  -lpthread -lrt -ldl -lcrypt
/usr/lib/gcc/x86_64-pc-cygwin/4.9.2/../../../../x86_64-pc-cygwin/bin/ld: cannot find -lcrypt
collect2: error: ld returned 1 exit status
Makefile:232: recipe for target 'stemmer.so' failed
make: *** [stemmer.so] Error 1

make failed, exit code 2

Gem files will remain installed in /home/<user>/.gem/ruby/gems/fast-stemmer-1.0.2 for inspection.
Results logged to /home/<user>/.gem/ruby/extensions/x86_64-cygwin/fast-stemmer-1.0.2/gem_make.out

我错过什么了吗

我在学习这些教程：

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安装程序包libcrypt-devel

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安装程序包libcrypt-devel