From: Paul Robinson <probinson@...>
Date: 2011-01-08T06:10:41+09:00
Subject: gem install ruby-serialport in windows

I am having trouble doing gem installs, and I am getting the following
message.  Any ideas on what I should try to do.


C:\Ruby19>gem install ruby-serialport
Building native extensions.  This could take a while...
ERROR:  Error installing ruby-serialport:
        ERROR: Failed to build gem native extension.

C:/Ruby19/bin/ruby.exe extconf.rb
checking for OS... mingw
checking for termios.h... *** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers.  Check the mkmf.log file for more
details.  You may need configuration options.

Provided configuration options:
        --with-opt-dir
        --without-opt-dir
        --with-opt-include
        --without-opt-include=${opt-dir}/include
        --with-opt-lib
        --without-opt-lib=${opt-dir}/lib
        --with-make-prog
        --without-make-prog
        --srcdir=.
        --curdir
        --ruby=C:/Ruby19/bin/ruby
C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:364:in `try_do': The complier failed to
generat
e an executable file. (RuntimeError)
You have to install development tools first.
        from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:433:in `try_cpp'
        from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:811:in `block in
have_header'
        from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:670:in `block in
checking_for'
        from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:276:in `block (2 levels)
in postpone'
        from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:250:in `open'
        from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:276:in `block in postpone'
        from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:250:in `open'
        from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:272:in `postpone'
        from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:669:in `checking_for'
        from C:/Ruby19/lib/ruby/1.9.1/mkmf.rb:810:in `have_header'
        from extconf.rb:10:in `<main>'


Gem files will remain installed in
C:/Ruby19/lib/ruby/gems/1.9.1/gems/ruby-seria
lport-0.7.0 for inspection.
Results logged to
C:/Ruby19/lib/ruby/gems/1.9.1/gems/ruby-serialport-0.7.0/ext/g
em_make.out

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