When installing Ruby on Rails (via gem install rails
) you may get the following error message:
c:/Ruby193/include/ruby-1.9.1/ruby/ruby.h:109:14: error: size of array 'ruby_check_sizeof_voidp' is negative
There will also be many warnings like this:
c:/Ruby193/include/ruby-1.9.1/ruby/ruby.h:1333:12: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
and an additional error
c:/Ruby193/include/ruby-1.9.1/ruby/missing.h:41:8: error: redefinition of 'struct timespec'
Why does this happen and how can I install Rails successfully?
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