Can't compile on Windows

[Ipecac242]

Ruby devkit is installed, but I get this error:

C:\temp>gem install debase
Temporarily enhancing PATH to include DevKit...
Building native extensions.  This could take a while...
ERROR:  Error installing debase:
        ERROR: Failed to build gem native extension.

    c:/Dev/Ruby200-p451/bin/ruby.exe extconf.rb
checking for vm_core.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:/Dev/Ruby200-p451/bin/ruby
        --with-ruby-dir
        --without-ruby-dir
        --with-ruby-include
        --without-ruby-include=${ruby-dir}/include
        --with-ruby-lib
        --without-ruby-lib=${ruby-dir}/
c:/Dev/Ruby200-p451/lib/ruby/2.0.0/mkmf.rb:434:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
        from c:/Dev/Ruby200-p451/lib/ruby/2.0.0/mkmf.rb:565:in `try_cpp'
        from c:/Dev/Ruby200-p451/lib/ruby/2.0.0/mkmf.rb:1044:in `block in have_header'
        from c:/Dev/Ruby200-p451/lib/ruby/2.0.0/mkmf.rb:895:in `block in checking_for'
        from c:/Dev/Ruby200-p451/lib/ruby/2.0.0/mkmf.rb:340:in `block (2 levels) in postpone'
        from c:/Dev/Ruby200-p451/lib/ruby/2.0.0/mkmf.rb:310:in `open'
        from c:/Dev/Ruby200-p451/lib/ruby/2.0.0/mkmf.rb:340:in `block in postpone'
        from c:/Dev/Ruby200-p451/lib/ruby/2.0.0/mkmf.rb:310:in `open'
        from c:/Dev/Ruby200-p451/lib/ruby/2.0.0/mkmf.rb:336:in `postpone'
        from c:/Dev/Ruby200-p451/lib/ruby/2.0.0/mkmf.rb:894:in `checking_for'
        from c:/Dev/Ruby200-p451/lib/ruby/2.0.0/mkmf.rb:1043:in `have_header'
        from extconf.rb:27:in `block in <main>'
        from c:/Dev/Ruby200-p451/lib/ruby/gems/2.0.0/gems/debugger-ruby_core_source-1.3.2/lib/debugger/ruby_core_source.rb:21:in `call'
        from c:/Dev/Ruby200-p451/lib/ruby/gems/2.0.0/gems/debugger-ruby_core_source-1.3.2/lib/debugger/ruby_core_source.rb:21:in `create_makefile_with_core'
        from extconf.rb:43:in `<main>'

Gem files will remain installed in c:/Dev/Ruby200-p451/lib/ruby/gems/2.0.0/gems/debase-0.0.9 for inspection.

mkmf.log has this:

"gcc -o conftest.exe -Ic:/Dev/Ruby200-p451/include/ruby-2.0.0/i386-mingw32 -Ic:/Dev/Ruby200-p451/include/ruby-2.0.0/ruby/backward -Ic:/Dev/Ruby200-p451/include/ruby-2.0.0 -I. -DFD_SETSIZE=2048 -D_WIN32_WINNT=0x0501 -D_FILE_OFFSET_BITS=64   -O3 -fno-omit-frame-pointer -fno-fast-math -g -Wall -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wunused-variable -Wpointer-arith -Wwrite-strings -Wdeclaration-after-statement -Wimplicit-function-declaration conftest.c  -L. -Lc:/Dev/Ruby200-p451/lib -L.      -lmsvcrt-ruby200  -lshell32 -lws2_32 -limagehlp -lshlwapi  "
In file included from c:/Dev/Ruby200-p451/include/ruby-2.0.0/ruby.h:33:0,
                 from conftest.c:1:
c:/Dev/Ruby200-p451/include/ruby-2.0.0/ruby/ruby.h:125:14: error: size of array 'ruby_check_sizeof_voidp' is negative
In file included from c:/Dev/Ruby200-p451/include/ruby-2.0.0/ruby.h:33:0,
                 from conftest.c:1:
c:/Dev/Ruby200-p451/include/ruby-2.0.0/ruby/ruby.h: In function 'rb_float_value':
c:/Dev/Ruby200-p451/include/ruby-2.0.0/ruby/ruby.h:826:13: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
c:/Dev/Ruby200-p451/include/ruby-2.0.0/ruby/ruby.h: In function 'rb_num2char_inline':
c:/Dev/Ruby200-p451/include/ruby-2.0.0/ruby/ruby.h:1214:35: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
c:/Dev/Ruby200-p451/include/ruby-2.0.0/ruby/ruby.h:1214:35: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
c:/Dev/Ruby200-p451/include/ruby-2.0.0/ruby/ruby.h:1214:35: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
c:/Dev/Ruby200-p451/include/ruby-2.0.0/ruby/ruby.h:1215:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
c:/Dev/Ruby200-p451/include/ruby-2.0.0/ruby/ruby.h:1215:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
c:/Dev/Ruby200-p451/include/ruby-2.0.0/ruby/ruby.h:1215:9: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
c:/Dev/Ruby200-p451/include/ruby-2.0.0/ruby/ruby.h: In function 'rb_class_of':
c:/Dev/Ruby200-p451/include/ruby-2.0.0/ruby/ruby.h:1515:12: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
c:/Dev/Ruby200-p451/include/ruby-2.0.0/ruby/ruby.h: In function 'rb_type':
c:/Dev/Ruby200-p451/include/ruby-2.0.0/ruby/ruby.h:1532:12: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: #include <winsock2.h>
4: #include <windows.h>
5: int main(int argc, char **argv)
6: {
7:   return 0;
8: }
/* end */

It appears that gcc doesn't like this line in ruby.h:

typedef char ruby_check_sizeof_voidp[SIZEOF_VOIDP == sizeof(void*) ? 1 : -1];

[os97673]

I have Windows 7 64bits I've installed ruby 2.0.0-p451 (32bits) from rubyinstaller.org, applied mingw64-32.4.7.2 devkit and everything works :( What exact ruby and devkit version are you using?

[Ipecac242]

Per your suggestion, I just tried installing rubyinstaller-2.0.0-p451.exe and DevKit-mingw64-32-4.7.2-20130224-1151-sfx.exe to fresh install folders. Now, it works fine. Not sure what was the problem, maybe some temporary files getting in the way.

Thanks for the help os97673.

[os97673]

@Ipecac242 you are welcome :)