由于gcc -m64标志错误，导致Windows 8 64位ruby-debug-ide安装的linecache19失败：抱歉，未实现：未在64位模式下编译

Question

I am going through the install for windows per Is ruby-debug-ide available to be installed on windows with ruby1.9.3? downloaded the gems and begin to install them. But get this 64 bit error. Is there a 32 bit version of linecache19. Do I need a different gcc compiler?

C:\JRuby\lib\ruby\gems\shared>gem install linecache19-0.5.13.gem
Building native extensions.  This could take a while...
ERROR:  Error installing linecache19-0.5.13.gem:
        ERROR: Failed to build gem native extension.

        C:/JRuby/bin/jruby.exe extconf.rb
C:/JRuby/lib/ruby/shared/mkmf.rb:14: Use RbConfig instead of obsolete and deprecated Config.
checking for vm_core.h... no
checking for vm_core.h... yes
checking for version.h... yes
creating Makefile

make
gcc -I. -IC:/JRuby/lib/native/include -IC:/JRuby/lib/native/include/ruby -I. -DHAVE_VM_CORE_H -DHAVE_VERSION_H -IC:/JRuby/lib/native/include
/ruby-1.9.3-p392 -fno-omit-frame-pointer -fno-strict-aliasing  -fexceptions    -m64 -march=native -mtune=native -c trace_nums.c
trace_nums.c:1:0: sorry, unimplemented: 64-bit mode not compiled in

Answer 1

Seems you've tried to install a gem (linecache19) on top of JRuby.

JRuby is powered by JVM, and installation of gems that pack C extensions is discourages (due performance issues)

If you plan to continue using JRuby and you're interested in things like debugging and such, I recommend you read JRuby documentation about how to debug with JRuby

If you're still interested in install linecache19 (and debugger gem), I recommend you install a version of Ruby that is compatible with C extension compilation, like RubyInstaller:

http://rubyinstaller.org/downloads

As mentioned in the download page, if you're new to Ruby/Rails world, I suggest you use Ruby 1.9.3 instead of Ruby 2.0 since not all the gems have been updated to be compatible with 2.0 on Windows.

Hope that helps.