在OSX Yosemite上安装EventMachine gem时出错

Question

以下是错误消息的完整输出:

    Fetching: eventmachine-1.0.3.gem (100%)
Building native extensions.  This could take a while...
ERROR:  Error installing eventmachine:
    ERROR: Failed to build gem native extension.

    /Users/Tyler/.rvm/rubies/ruby-2.2.0/bin/ruby -r ./siteconf20141229-47086-wfdm3m.rb extconf.rb
checking for rb_trap_immediate in ruby.h,rubysig.h... no
checking for rb_thread_blocking_region()... no
checking for inotify_init() in sys/inotify.h... no
checking for __NR_inotify_init in sys/syscall.h... no
checking for writev() in sys/uio.h... yes
checking for rb_wait_for_single_fd()... yes
checking for rb_enable_interrupt()... no
checking for rb_time_new()... yes
checking for sys/event.h... yes
checking for sys/queue.h... yes
creating Makefile

make "DESTDIR=" clean

make "DESTDIR="
compiling binder.cpp
compiling cmain.cpp
compiling ed.cpp
compiling em.cpp
em.cpp:827:9: error: use of undeclared identifier 'rb_thread_select'; did you mean 'rb_thread_fd_select'?
        return EmSelect (maxsocket+1, &fdreads, &fdwrites, &fderrors, &tv);
               ^~~~~~~~
               rb_thread_fd_select
./em.h:25:20: note: expanded from macro 'EmSelect'
  #define EmSelect rb_thread_select
                   ^
/Users/Tyler/.rvm/rubies/ruby-2.2.0/include/ruby-2.2.0/ruby/intern.h:454:5: note: 'rb_thread_fd_select' declared here
int rb_thread_fd_select(int, rb_fdset_t *, rb_fdset_t *, rb_fdset_t *, struct timeval *);
    ^
em.cpp:827:32: error: cannot initialize a parameter of type 'rb_fdset_t *' with an rvalue of type 'fd_set *'
        return EmSelect (maxsocket+1, &fdreads, &fdwrites, &fderrors, &tv);
                                      ^~~~~~~~
/Users/Tyler/.rvm/rubies/ruby-2.2.0/include/ruby-2.2.0/ruby/intern.h:454:42: note: passing argument to parameter here
int rb_thread_fd_select(int, rb_fdset_t *, rb_fdset_t *, rb_fdset_t *, struct timeval *);
                                         ^
em.cpp:946:6: error: use of undeclared identifier 'rb_thread_select'; did you mean 'rb_thread_fd_select'?
                                        EmSelect (0, NULL, NULL, NULL, &tv);
                                        ^~~~~~~~
                                        rb_thread_fd_select
./em.h:25:20: note: expanded from macro 'EmSelect'
  #define EmSelect rb_thread_select
                   ^
/Users/Tyler/.rvm/rubies/ruby-2.2.0/include/ruby-2.2.0/ruby/intern.h:454:5: note: 'rb_thread_fd_select' declared here
int rb_thread_fd_select(int, rb_fdset_t *, rb_fdset_t *, rb_fdset_t *, struct timeval *);
    ^
3 errors generated.
make: *** [em.o] Error 1

make failed, exit code 2

以前有没有人看到这样的错误？我有命令行工具 - 从来没有遇到错误编译我的旧笔记本电脑也运行优胜美地的这个宝石.

Answer 1

EventMachine 1.0.3不适用于Ruby 2.2.这已在EventMachine 1.0.4中修复.您最有可能通过升级EventMachine来修复您的情况

bundle update eventmachine

Answer 2

对于El Captain来说,这对我有用:

$ bundle update eventmachine # updated to v1.0.8
$ bundle config build.eventmachine --with-cppflags=-I/usr/local/opt/openssl/include
$ bundle install

Answer 3

如果你有brew安装,试试吧

brew install openssl

如果它仍然说,

Warning: openssl-1.0.2e already installed

然后运行此命令,

brew link openssl --force

它会做的伎俩.:)

Answer 4

尝试这个

gem install eventmachine -- --with-cppflags=-I/usr/local/opt/openssl/include

Answer 5

我记得安装了另一个需要 eventmachine 的 gem，它在 Windows 中给我带来了问题。我必须安装DevKit工具，这解决了我的问题。抱歉，我无法提供更多详细信息，但希望它有助于解决您的问题。你也可以尝试上面Prakash分享的内容。安装 Devkit 后我最终不得不更新自己。