Eventmachine gem install fail

Question

I am not able to install eventmachine

Ok I know this has been asked quite a lot, but no solutions I found has helped me so far.So I posted here as a last resort.

I use windows 8 x64 using ruby 2.0.0p195 (x64) (installed throught Ruby Installer for Windows with the apropriate Devkit)

So the Error is

    Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension
C:/Ruby200-x64/bin/ruby.exe extconf.rb
checking for main() in -lssl... no
checking for rb_trap_immediate in ruby.h,rubysig.h... no
checking for rb_thread_blocking_region()... yes
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... no
checking for rb_wait_for_single_fd()... yes
checking for rb_enable_interrupt()... no
checking for rb_time_new()... yes
checking for windows.h... yes
checking for winsock.h... yes
checking for main() in -lkernel32... yes
checking for main() in -lrpcrt4... yes
checking for main() in -lgdi32... yes
creating Makefile

make
generating rubyeventmachine-x64-mingw32.def
compiling binder.cpp
In file included from c:\users\btdy\downloads\devkit\mingw\bin\../lib/gcc/x86_64
-w64-mingw32/4.7.2/../../../../x86_64-w64-mingw32/include/process.h:12:0,
             from c:/Ruby200-x64/include/ruby-2.0.0/ruby/win32.h:60,
             from c:/Ruby200-x64/include/ruby-2.0.0/ruby/defines.h:153,
             from c:/Ruby200-x64/include/ruby-2.0.0/ruby/ruby.h:70,
             from c:/Ruby200-x64/include/ruby-2.0.0/ruby.h:33,
             from em.h:24,
             from project.h:150,
             from binder.cpp:20:
c:\users\btdy\downloads\devkit\mingw\bin\../lib/gcc/x86_64-w64-mingw32/4.7.2/../
../../../x86_64-w64-mingw32/include/sys/types.h:68:16: error: conflicting declar
ation 'typedef _pid_t pid_t'
In file included from binder.cpp:20:0:
project.h:97:13: error: 'pid_t' has a previous declaration as 'typedef int pid_t
'
In file included from project.h:151:0,
             from binder.cpp:20:
ed.h: In member function 'void EventableDescriptor::SetSocketInvalid()':
ed.h:43:40: warning: overflow in implicit constant conversion [-Woverflow]
make: *** [binder.o] Error 1      

Things I have tried putting gem "eventmachine", "~> 1.0.3" or gem "eventmachine", "~> 1.0.0.beta.4.1" in my gemfile and removed/modify eventmachine from gemfile.lock making a new testapp and instaling Eventmachine there (fail)

Things I suspect I tracked down dependencies for eventmachine(can be found on Rubygems) and I see that I cannot install bluecloth neither (shows even bigger log error) and neither can I install tidy-ext (bluecloth depencency) so I think it might have some relevance , also cannot install thin

For any info just ask

Thank you all in advance!!

Answer 1

I could install it, doing this steps:

1) tried a normal install:

gem install eventmachine

it fetched the version 1.0.3 of the gem, but failed in the make, because of a variable declaration conflit

2) edited the file:

c:\Ruby200-x64\lib\ruby\gems\2.0.0\gems\eventmachine-1.0.3\ext\project.h

and commented the line 97

//typedef int pid_t;

for a more robust correction, checkout the solution here https://github.com/eventmachine/eventmachine/pull/450/files

3) then, i've opened command prompt, and went to the gem folder

c:\Ruby200-x64\lib\ruby\gems\2.0.0\gems\eventmachine-1.0.3

and run:

gem build eventmachine.gemspec

You need git installed with the git.exe location in the PATH for this to work (such as C:\Users\YourUsername\AppData\Local\GitHub\PORTAB~1\bin).

4) it generated a eventmachine.gem file on the folder... So I've copied a file to a c:\tmp folder, and went to that folder and from there, I've typed:

gem install eventmachine-1.0.3.gem --local

And it installed successfully!