在Windows系统上安装'wdm'gem时出错

Question

我在Windows 7系统上全新安装了Ruby 2.2.1（32位）。我还安装了devkit而没有任何报告错误。当然，我以为我可以安装“wdm”＆＃39;宝石：

gem install wdm

然而，它出错了。整个输出有点过分发布整个事情所以截断了以下几点。

C:/Ruby22/bin/ruby.exe -r ./siteconf20150318-1712-oq5nlb.rb extconf.rb
checking for main() in -lkernel32... yes
checking for windows.h... yes
checking for ruby.h... yes
checking for HAVE_RUBY_ENCODING_H... yes
creating Makefile

make "DESTDIR=" clean

make "DESTDIR="
generating wdm_ext-i386-mingw32.def
compiling entry.c
In file included from entry.c:1:0:
wdm.h:3:0: warning: "WINVER" redefined [enabled by default]
...
wdm.h:4:0: warning: "_WIN32_WINNT" redefined [enabled by default]
...
warning: #warning Please include winsock2.h before windows.h [-Wcpp]
compiling monitor.c  (this is repeated for multiple *.c files)
...
rb_monitor.o: In function `rb_monitor_run_bang':
C:\Ruby22\lib\ruby\gems\2.2.0\gems\wdm-0.1.0\ext\wdm/rb_monitor.c:508: undefined reference to `rb_thread_blocking_region'
collect2.exe: error: ld returned 1 exit status
make: *** [wdm_ext.so] Error 1

make failed, exit code 2

我错过了什么吗？

Answer 1

wdm宝石与2.2兼容。它调用在2.0中弃用的函数rb_thread_blocking_region()，最后调用removed in 2.2。宝石也不再维护（见repository and issue tracker）。

您可以分叉回购，合并the existing PR that apparently fixes the issue，并自己构建gem。使用较旧的Ruby版本也是一种解决方案。

<强>更新 wdm gem之前已更新为0.1.1。此版本修复了该错误。