json gem won't install on Windows

Question

Here is the error I keep getting. I installed DevKit and followed all the instructions.

gem install json -v '1.6.3'
Temporarily enhancing PATH to include DevKit...
Building native extensions.  This could take a while...
ERROR:  Error installing json:
        ERROR: Failed to build gem native extension.

        "C:/Program Files/Ruby/Ruby192/bin/ruby.exe" extconf.rb
creating Makefile

make
Makefile:160: warning: overriding commands for target `C:/Program'
Makefile:153: warning: ignoring old commands for target `C:/Program'
C:/Program Files/Ruby/Ruby192/bin/ruby -e "puts 'EXPORTS', 'Init_parser'"  > par
ser-i386-mingw32.def
/bin/sh: C:/Program: No such file or directory
make: *** [parser-i386-mingw32.def] Error 127


Gem files will remain installed in C:/Program Files/Ruby/Ruby192/lib/ruby/gems/1.9.1/gems/json-1.6.3 for inspection.
Results logged to C:/Program Files/Ruby/Ruby192/lib/ruby/gems/1.9.1/gems/json-1.6.3/ext/json/ext/parser/gem_make.out

Does anyone have a solution to this?

Answer 1

Just ran into this as well. Via Installing dm-types on Windows. (Win7 x64): this fixed it:

---

It looks the the spaces in the path for ruby are screwing up the makefile. Maybe try creating a symlink on Windows temporarily, like:

mklink /d c:\ruby "C:\Program Files (x86)\Ruby\Ruby193"

and then try installing with c:\ruby\bin\ruby.exe. You can delete the symlink after installing.