Problems compiling r2corba with ruby 2.5 and newer on Windows

[jwillemsen]

On Windows using ruby 2.5 or newer the compilation of the C extensions fail with the error below. This comes by the fact that r2corba defines RUBY_WIN32_H at

r2corba/ext/libr2tao/required.h

Line 18 in 3aa7d2b

#define RUBY_WIN32_H

which causes rb_w32_select not to be defined, this is done through ruby.h

g++ -Wnon-virtual-dtor -O3 -mthreads -mtune=generic -fno-strict-aliasing -Wall -Wextra -Wpointer-arith -pipe -DNDEBUG -DACE_HAS_CUSTOM_EXPORT_MACROS=0 -Wno-unknown-pragmas -DNDEBUG -ID:/a/r2corba/r2corba/ACE/ACE -DACE_NDEBUG -DACE_NO_INLINE -ID:/a/r2corba/r2corba/ACE/ACE -ID:/a/r2corba/r2corba/ACE/TAO -IC:/hostedtoolcache/windows/Ruby/2.6.6/x64/include/ruby-2.6.0 -IC:/hostedtoolcache/windows/Ruby/2.6.6/x64/include/ruby-2.6.0/x64-mingw32 -I. -DRUBY_VER_MAJOR=2 -DRUBY_VER_MINOR=6 -DRUBY_VER_RELEASE=6 -DR2TAO_BUILD_DLL  -c  -o .shobj/any.o /d/a/r2corba/r2corba/ext/libr2tao/any.cpp
In file included from C:/hostedtoolcache/windows/Ruby/2.6.6/x64/include/ruby-2.6.0/ruby/ruby.h:2111,
                 from C:/hostedtoolcache/windows/Ruby/2.6.6/x64/include/ruby-2.6.0/ruby.h:33,
                 from D:/a/r2corba/r2corba/ext/libr2tao/required.h:30,
                 from D:/a/r2corba/r2corba/ext/libr2tao/any.cpp:13:
C:/hostedtoolcache/windows/Ruby/2.6.6/x64/include/ruby-2.6.0/ruby/intern.h: In function 'int rb_fd_select(int, rb_fdset_t*, rb_fdset_t*, rb_fdset_t*, timeval*)':
C:/hostedtoolcache/windows/Ruby/2.6.6/x64/include/ruby-2.6.0/ruby/intern.h:373:12: error: 'rb_w32_select' was not declared in this scope; did you mean 'rb_fd_select'?
  373 |     return rb_w32_select(n,
      |            ^~~~~~~~~~~~~
      |            rb_fd_select

[jwillemsen]

Been able to fix these compile errors with some changes in r2corba and ACE, see https://github.com/jwillemsen/r2corba/tree/jwi-ruby26, that compiles, but has the runtime issue as reported in #65 using Ruby 2.4 and newer

[jwillemsen]

Fixed