Matheus@TETRAHELP03 ~/workspace/tetrawebtrack
$ gem install mongrel
Temporarily enhancing PATH to include DevKit...
Building native extensions.  This could take a while...
ERROR:  Error installing mongrel:
        ERROR: Failed to build gem native extension.

    c:/Ruby200-x64/bin/ruby.exe extconf.rb
checking for main() in -lc... no
creating Makefile

make "DESTDIR="
generating http11-x64-mingw32.def
compiling http11.c
http11.c: In function 'http_field':
http11.c:77:22: error: 'struct RString' has no member named 'ptr'
http11.c:77:50: error: 'struct RString' has no member named 'len'
http11.c:77:27: warning: left-hand operand of comma expression has no effect [-Wunused-value]
http11.c: In function 'header_done':
http11.c:172:33: error: 'struct RString' has no member named 'ptr'
http11.c:174:89: error: 'struct RString' has no member named 'ptr'
http11.c:176:52: error: 'struct RString' has no member named 'ptr'
http11.c:177:26: error: 'struct RString' has no member named 'len'
http11.c: In function 'HttpParser_execute':
http11.c:298:23: error: 'struct RString' has no member named 'ptr'
http11.c:299:23: error: 'struct RString' has no member named 'len'
make: *** [http11.o] Error 1


Gem files will remain installed in c:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/mongrel-1.1.5 for inspection.
Results logged to c:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/mongrel-1.1.5/ext/http11/gem_make.out

Matheus@TETRAHELP03 ~/workspace/tetrawebtrack