CI: Windows: An error occurred while installing cool.io (1.8.0), and Bundler cannot continue.

[daipom]

Describe the bug

Currently, the CI for Windows fails.
It seems that cool.io(libev) could be the cause.
(Does it have something to do with native extensions for oj?)

Example: https://github.com/fluent/fluentd/actions/runs/9058744234/job/24884949835?pr=4492

...
Fetching oj 3.16.3
Installing oj 3.16.3 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

current directory:
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/gems/3.2.0/gems/cool.io-1.8.0/ext/cool.io
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/bin/ruby.exe extconf.rb
checking for rb_io_descriptor()... yes
checking for rb_thread_blocking_region()... no
checking for rb_thread_call_without_gvl()... yes
checking for rb_thread_alone()... yes
checking for rb_str_set_len()... yes
checking for clock_gettime() in -lrt... no
checking for ruby/io.h... yes
checking for ruby/thread.h... yes
checking for sys/select.h... no
checking for poll.h... no
checking for sys/epoll.h... no
checking for sys/event.h... no
checking for port.h... no
checking for sys/resource.h... no
checking for sysctlbyname() in sys/param.h,sys/sysctl.h... no
creating Makefile

current directory:
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/gems/3.2.0/gems/cool.io-1.8.0/ext/cool.io
make.exe DESTDIR\= sitearchdir\=./.gem.20240513-2580-ckbpai
sitelibdir\=./.gem.20240513-2580-ckbpai clean

current directory:
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/gems/3.2.0/gems/cool.io-1.8.0/ext/cool.io
make.exe DESTDIR\= sitearchdir\=./.gem.20240513-2580-ckbpai
sitelibdir\=./.gem.20240513-2580-ckbpai
generating cool.io_ext-x64-mingw-ucrt.def
compiling cool.io_ext.c
compiling iowatcher.c
compiling libev.c
In file included from libev.c:8:
../libev/ev.c:213:10: warning: "FD_SETSIZE" redefined
  213 | # define FD_SETSIZE 1024
      |          ^~~~~~~~~~
<command-line>: note: this is the location of the previous definition
../libev/ev.c:1839:31: warning: 'ev_default_loop_ptr' initialized and declared
'extern'
1839 |   EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be
initialised to make it a definition despite extern */
      |                               ^~~~~~~~~~~~~~~~~~~
../libev/ev.c: In function 'evpipe_write':
../libev/ev.c:2484:19: error: assignment to 'char *' from incompatible pointer
type 'WSABUF *' [-Wincompatible-pointer-types]
 2484 |           buf.buf = &buf;
      |                   ^
make: *** [Makefile:248: libev.o] Error 1

make failed, exit code 2

Gem files will remain installed in
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/gems/3.2.0/gems/cool.io-1.8.0
for inspection.
Results logged to
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/gems/3.2.0/extensions/x64-mingw-ucrt/3.2.0/cool.io-1.8.0/gem_make.out

C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/3.2.0/rubygems/ext/builder.rb:119:in
`run'
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/3.2.0/rubygems/ext/builder.rb:53:in
`block in make'
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/3.2.0/rubygems/ext/builder.rb:45:in
`each'
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/3.2.0/rubygems/ext/builder.rb:45:in
`make'
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/3.2.0/rubygems/ext/ext_conf_builder.rb:42:in
`build'
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/3.2.0/rubygems/ext/builder.rb:187:in
`build_extension'
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/3.2.0/rubygems/ext/builder.rb:221:in
`block in build_extensions'
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/3.2.0/rubygems/ext/builder.rb:218:in
`each'
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/3.2.0/rubygems/ext/builder.rb:218:in
`build_extensions'
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/3.2.0/rubygems/installer.rb:846:in
`build_extensions'
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/gems/3.2.0/gems/bundler-2.5.10/lib/bundler/rubygems_gem_installer.rb:76:in
`build_extensions'
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/gems/3.2.0/gems/bundler-2.5.10/lib/bundler/rubygems_gem_installer.rb:28:in
`install'
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/gems/3.2.0/gems/bundler-2.5.10/lib/bundler/source/rubygems.rb:205:in
`install'
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/gems/3.2.0/gems/bundler-2.5.10/lib/bundler/installer/gem_installer.rb:54:in
`install'
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/gems/3.2.0/gems/bundler-2.5.10/lib/bundler/installer/gem_installer.rb:16:in
`install_from_spec'
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/gems/3.2.0/gems/bundler-2.5.10/lib/bundler/installer/parallel_installer.rb:132:in
`do_install'
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/gems/3.2.0/gems/bundler-2.5.10/lib/bundler/installer/parallel_installer.rb:123:in
`block in worker_pool'
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/gems/3.2.0/gems/bundler-2.5.10/lib/bundler/worker.rb:62:in
`apply_func'
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/gems/3.2.0/gems/bundler-2.5.10/lib/bundler/worker.rb:57:in
`block in process_queue'
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/gems/3.2.0/gems/bundler-2.5.10/lib/bundler/worker.rb:54:in
`loop'
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/gems/3.2.0/gems/bundler-2.5.10/lib/bundler/worker.rb:54:in
`process_queue'
C:/hostedtoolcache/windows/Ruby/3.2.4/x64/lib/ruby/gems/3.2.0/gems/bundler-2.5.10/lib/bundler/worker.rb:90:in
`block (2 levels) in create_threads'

An error occurred while installing cool.io (1.8.0), and Bundler cannot continue.

In Gemfile:
  fluentd was resolved to 1.17.0, which depends on
    cool.io
Error: Process completed with exit code 1.

To Reproduce

Currently, Windows CI always fails.

However, I can't reproduce it on my local. (Windows Home 10, Ruby 3.2.2)

Expected behavior

CI works, and the tests are executed.

Your Environment

- Fluentd version: 1.17
- TD Agent version:
- Operating system:
- Kernel version:

Your Configuration

None

Your Error Log

None

Additional context

No response

[daipom]

Hmm, I can't find the cause.

This worked before.
The version of cool.io has not changed since then.
It doesn't appear to be related to a specific Ruby version.
Not reproducible locally.

Has there been a change in the GitHub workflow environment?

[daipom]

The type issue has existed on libev before 4.25.
It was fixed on 4.25 (libev upstream):

http://cvs.schmorp.de/libev/ev.c?r1=1.484&r2=1.485&pathrev=rel-4_25

but it is not yet applied to cool.io.

Perhaps something changed in the CI environment, and it caused this problem to become an error.

[daipom]

I have made a PR for cool.io:

• Windows: Fix build error incompatible pointer types socketry/cool.io#81

[daipom]

I have tried -Wno-incompatible-pointer-types by using bundle config as follows, but it does not work.

bundle config --local build.cool.io --with-cflags=\"-Wno-incompatible-pointer-types\"

Installing cool.io 1.8.0 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

current directory:
C:/Ruby32-x64/lib/ruby/gems/3.2.0/gems/cool.io-1.8.0/ext/cool.io
C:/Ruby32-x64/bin/ruby.exe extconf.rb
--with-cflags\=\\-Wno-incompatible-pointer-types\\
checking for rb_io_descriptor()... *** 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:/Ruby32-x64/bin/$(RUBY_BASE_NAME)
C:/Ruby32-x64/lib/ruby/3.2.0/mkmf.rb:490:in `try_do': The compiler failed to
generate an executable file. (RuntimeError)
You have to install development tools first.

        from C:/Ruby32-x64/lib/ruby/3.2.0/mkmf.rb:583:in `try_link0'
        from C:/Ruby32-x64/lib/ruby/3.2.0/mkmf.rb:601:in `try_link'
        from C:/Ruby32-x64/lib/ruby/3.2.0/mkmf.rb:812:in `try_func'
        from C:/Ruby32-x64/lib/ruby/3.2.0/mkmf.rb:1116:in `block in have_func'
        from C:/Ruby32-x64/lib/ruby/3.2.0/mkmf.rb:989:in `block in checking_for'
        from C:/Ruby32-x64/lib/ruby/3.2.0/mkmf.rb:354:in `block (2 levels) in postpone'
        from C:/Ruby32-x64/lib/ruby/3.2.0/mkmf.rb:324:in `open'
        from C:/Ruby32-x64/lib/ruby/3.2.0/mkmf.rb:354:in `block in postpone'
        from C:/Ruby32-x64/lib/ruby/3.2.0/mkmf.rb:324:in `open'
        from C:/Ruby32-x64/lib/ruby/3.2.0/mkmf.rb:350:in `postpone'
        from C:/Ruby32-x64/lib/ruby/3.2.0/mkmf.rb:988:in `checking_for'
        from C:/Ruby32-x64/lib/ruby/3.2.0/mkmf.rb:1115:in `have_func'
        from extconf.rb:7:in `<main>'

To see why this extension failed to compile, please check the mkmf.log which can
be found here:

C:/Ruby32-x64/lib/ruby/gems/3.2.0/extensions/x64-mingw-ucrt/3.2.0/cool.io-1.8.0/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in
C:/Ruby32-x64/lib/ruby/gems/3.2.0/gems/cool.io-1.8.0 for inspection.
Results logged to
C:/Ruby32-x64/lib/ruby/gems/3.2.0/extensions/x64-mingw-ucrt/3.2.0/cool.io-1.8.0/gem_make.out

  C:/Ruby32-x64/lib/ruby/site_ruby/3.2.0/rubygems/ext/builder.rb:119:in `run'
C:/Ruby32-x64/lib/ruby/site_ruby/3.2.0/rubygems/ext/ext_conf_builder.rb:27:in
`build'
C:/Ruby32-x64/lib/ruby/site_ruby/3.2.0/rubygems/ext/builder.rb:187:in
`build_extension'
C:/Ruby32-x64/lib/ruby/site_ruby/3.2.0/rubygems/ext/builder.rb:221:in `block
in build_extensions'
  C:/Ruby32-x64/lib/ruby/site_ruby/3.2.0/rubygems/ext/builder.rb:218:in `each'
C:/Ruby32-x64/lib/ruby/site_ruby/3.2.0/rubygems/ext/builder.rb:218:in
`build_extensions'
C:/Ruby32-x64/lib/ruby/site_ruby/3.2.0/rubygems/installer.rb:843:in
`build_extensions'
C:/Ruby32-x64/lib/ruby/gems/3.2.0/gems/bundler-2.4.13/lib/bundler/rubygems_gem_installer.rb:72:in
`build_extensions'
C:/Ruby32-x64/lib/ruby/gems/3.2.0/gems/bundler-2.4.13/lib/bundler/rubygems_gem_installer.rb:28:in
`install'
C:/Ruby32-x64/lib/ruby/gems/3.2.0/gems/bundler-2.4.13/lib/bundler/source/rubygems.rb:198:in
`install'
C:/Ruby32-x64/lib/ruby/gems/3.2.0/gems/bundler-2.4.13/lib/bundler/installer/gem_installer.rb:54:in
`install'
C:/Ruby32-x64/lib/ruby/gems/3.2.0/gems/bundler-2.4.13/lib/bundler/installer/gem_installer.rb:16:in
`install_from_spec'
C:/Ruby32-x64/lib/ruby/gems/3.2.0/gems/bundler-2.4.13/lib/bundler/installer/parallel_installer.rb:156:in
`do_install'
C:/Ruby32-x64/lib/ruby/gems/3.2.0/gems/bundler-2.4.13/lib/bundler/installer/parallel_installer.rb:147:in
`block in worker_pool'
C:/Ruby32-x64/lib/ruby/gems/3.2.0/gems/bundler-2.4.13/lib/bundler/worker.rb:62:in
`apply_func'
C:/Ruby32-x64/lib/ruby/gems/3.2.0/gems/bundler-2.4.13/lib/bundler/worker.rb:57:in
`block in process_queue'
C:/Ruby32-x64/lib/ruby/gems/3.2.0/gems/bundler-2.4.13/lib/bundler/worker.rb:54:in
`loop'
C:/Ruby32-x64/lib/ruby/gems/3.2.0/gems/bundler-2.4.13/lib/bundler/worker.rb:54:in
`process_queue'
C:/Ruby32-x64/lib/ruby/gems/3.2.0/gems/bundler-2.4.13/lib/bundler/worker.rb:90:in
`block (2 levels) in create_threads'

An error occurred while installing cool.io (1.8.0), and Bundler cannot
continue.

mkmf.log

have_func: checking for rb_io_descriptor()... -------------------- yes

PATH=".;C:/Ruby32-x64/lib;C:\Ruby32-x64\bin;C:\Ruby32-x64\msys64\ucrt64\bin;C:\Ruby32-x64\msys64\usr\bin;C:\cmder\bin;C:\cmder\vendor\bin;C:\cmder\vendor\conemu-maximus5\ConEmu\Scripts;C:\cmder\vendor\conemu-maximus5;C:\cmder\vendor\conemu-maximus5\ConEmu;C:\Program Files\Microsoft\jdk-11.0.12.7-hotspot\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Windows\System32\OpenSSH\;C:\Program Files\Intel\WiFi\bin\;C:\Program Files\Common Files\Intel\WirelessCommon\;C:\Program Files\dotnet\;C:\Program Files\Microsoft SQL Server\130\Tools\Binn\;C:\Program Files\Microsoft SQL Server\Client SDK\ODBC\170\Tools\Binn\;C:\Program Files\CMake\bin;C:\Program Files\Docker\Docker\resources\bin;C:\HashiCorp\Vagrant\bin;C:\Users\reang\AppData\Local\Programs\Python\Python38\Scripts\;C:\Users\reang\AppData\Local\Programs\Python\Python38\;C:\Users\reang\AppData\Local\Microsoft\WindowsApps;C:\Users\reang\AppData\Local\Programs\Microsoft VS Code\bin;C:\Users\reang\.dotnet\tools;C:\Program Files\Sublime Text 3;C:\mingw64\bin;C:\Program Files (x86)\Dr. Memory\bin\;C:\Ruby32-x64\bin;C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2023.3.4\bin;C:\cmder\vendor\git-for-windows\cmd;C:\cmder\vendor\git-for-windows\usr\bin;C:\cmder\vendor\git-for-windows\mingw64\bin;C:\cmder;C:\Users\reang\Documents\WindowsPowerShell\Func;C:\mingw64\bin" "gcc -o conftest.exe -IC:/Ruby32-x64/include/ruby-3.2.0/x64-mingw-ucrt -IC:/Ruby32-x64/include/ruby-3.2.0/ruby/backward -IC:/Ruby32-x64/include/ruby-3.2.0 -I. -D__USE_MINGW_ANSI_STDIO=1 -DFD_SETSIZE=2048 -D_WIN32_WINNT=0x0600 -D__MINGW_USE_VC2005_COMPAT -D_FILE_OFFSET_BITS=64  -O3 -fno-fast-math -fstack-protector-strong conftest.c  -L. -LC:/Ruby32-x64/lib -L. -pipe -s -fstack-protector-strong -Wl,--no-as-needed  -m64   -lx64-ucrt-ruby320  -lshell32 -lws2_32 -liphlpapi -limagehlp -lshlwapi -lbcrypt  "
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 !!argv[argc];
8: }
/* end */

PATH=".;C:/Ruby32-x64/lib;C:\Ruby32-x64\bin;C:\Ruby32-x64\msys64\ucrt64\bin;C:\Ruby32-x64\msys64\usr\bin;C:\cmder\bin;C:\cmder\vendor\bin;C:\cmder\vendor\conemu-maximus5\ConEmu\Scripts;C:\cmder\vendor\conemu-maximus5;C:\cmder\vendor\conemu-maximus5\ConEmu;C:\Program Files\Microsoft\jdk-11.0.12.7-hotspot\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Windows\System32\OpenSSH\;C:\Program Files\Intel\WiFi\bin\;C:\Program Files\Common Files\Intel\WirelessCommon\;C:\Program Files\dotnet\;C:\Program Files\Microsoft SQL Server\130\Tools\Binn\;C:\Program Files\Microsoft SQL Server\Client SDK\ODBC\170\Tools\Binn\;C:\Program Files\CMake\bin;C:\Program Files\Docker\Docker\resources\bin;C:\HashiCorp\Vagrant\bin;C:\Users\reang\AppData\Local\Programs\Python\Python38\Scripts\;C:\Users\reang\AppData\Local\Programs\Python\Python38\;C:\Users\reang\AppData\Local\Microsoft\WindowsApps;C:\Users\reang\AppData\Local\Programs\Microsoft VS Code\bin;C:\Users\reang\.dotnet\tools;C:\Program Files\Sublime Text 3;C:\mingw64\bin;C:\Program Files (x86)\Dr. Memory\bin\;C:\Ruby32-x64\bin;C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2023.3.4\bin;C:\cmder\vendor\git-for-windows\cmd;C:\cmder\vendor\git-for-windows\usr\bin;C:\cmder\vendor\git-for-windows\mingw64\bin;C:\cmder;C:\Users\reang\Documents\WindowsPowerShell\Func;C:\mingw64\bin" "gcc -o conftest.exe -IC:/Ruby32-x64/include/ruby-3.2.0/x64-mingw-ucrt -IC:/Ruby32-x64/include/ruby-3.2.0/ruby/backward -IC:/Ruby32-x64/include/ruby-3.2.0 -I. -D__USE_MINGW_ANSI_STDIO=1 -DFD_SETSIZE=2048 -D_WIN32_WINNT=0x0600 -D__MINGW_USE_VC2005_COMPAT -D_FILE_OFFSET_BITS=64  -O3 -fno-fast-math -fstack-protector-strong conftest.c  -L. -LC:/Ruby32-x64/lib -L. -pipe -s -fstack-protector-strong -Wl,--no-as-needed  -m64   -lx64-ucrt-ruby320  -lshell32 -lws2_32 -liphlpapi -limagehlp -lshlwapi -lbcrypt  "
conftest.c: In function 't':
conftest.c:17:57: error: 'rb_io_descriptor' undeclared (first use in this function)
   17 | int t(void) { void ((*volatile p)()); p = (void ((*)()))rb_io_descriptor; return !p; }
      |                                                         ^~~~~~~~~~~~~~~~
conftest.c:17:57: note: each undeclared identifier is reported only once for each function it appears in
checked program was:
/* begin */
 1: #include "ruby.h"
 2: 
 3: #include <winsock2.h>
 4: #include <windows.h>
 5: 
 6: /*top*/
 7: extern int t(void);
 8: int main(int argc, char **argv)
 9: {
10:   if (argc > 1000000) {
11:     int (* volatile tp)(void)=(int (*)(void))&t;
12:     printf("%d", (*tp)());
13:   }
14: 
15:   return !!argv[argc];
16: }
17: int t(void) { void ((*volatile p)()); p = (void ((*)()))rb_io_descriptor; return !p; }
/* end */

PATH=".;C:/Ruby32-x64/lib;C:\Ruby32-x64\bin;C:\Ruby32-x64\msys64\ucrt64\bin;C:\Ruby32-x64\msys64\usr\bin;C:\cmder\bin;C:\cmder\vendor\bin;C:\cmder\vendor\conemu-maximus5\ConEmu\Scripts;C:\cmder\vendor\conemu-maximus5;C:\cmder\vendor\conemu-maximus5\ConEmu;C:\Program Files\Microsoft\jdk-11.0.12.7-hotspot\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Windows\System32\OpenSSH\;C:\Program Files\Intel\WiFi\bin\;C:\Program Files\Common Files\Intel\WirelessCommon\;C:\Program Files\dotnet\;C:\Program Files\Microsoft SQL Server\130\Tools\Binn\;C:\Program Files\Microsoft SQL Server\Client SDK\ODBC\170\Tools\Binn\;C:\Program Files\CMake\bin;C:\Program Files\Docker\Docker\resources\bin;C:\HashiCorp\Vagrant\bin;C:\Users\reang\AppData\Local\Programs\Python\Python38\Scripts\;C:\Users\reang\AppData\Local\Programs\Python\Python38\;C:\Users\reang\AppData\Local\Microsoft\WindowsApps;C:\Users\reang\AppData\Local\Programs\Microsoft VS Code\bin;C:\Users\reang\.dotnet\tools;C:\Program Files\Sublime Text 3;C:\mingw64\bin;C:\Program Files (x86)\Dr. Memory\bin\;C:\Ruby32-x64\bin;C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2023.3.4\bin;C:\cmder\vendor\git-for-windows\cmd;C:\cmder\vendor\git-for-windows\usr\bin;C:\cmder\vendor\git-for-windows\mingw64\bin;C:\cmder;C:\Users\reang\Documents\WindowsPowerShell\Func;C:\mingw64\bin" "gcc -o conftest.exe -IC:/Ruby32-x64/include/ruby-3.2.0/x64-mingw-ucrt -IC:/Ruby32-x64/include/ruby-3.2.0/ruby/backward -IC:/Ruby32-x64/include/ruby-3.2.0 -I. -D__USE_MINGW_ANSI_STDIO=1 -DFD_SETSIZE=2048 -D_WIN32_WINNT=0x0600 -D__MINGW_USE_VC2005_COMPAT -D_FILE_OFFSET_BITS=64  -O3 -fno-fast-math -fstack-protector-strong conftest.c  -L. -LC:/Ruby32-x64/lib -L. -pipe -s -fstack-protector-strong -Wl,--no-as-needed  -m64   -lx64-ucrt-ruby320  -lshell32 -lws2_32 -liphlpapi -limagehlp -lshlwapi -lbcrypt  "
checked program was:
/* begin */
 1: #include "ruby.h"
 2: 
 3: #include <winsock2.h>
 4: #include <windows.h>
 5: 
 6: /*top*/
 7: extern int t(void);
 8: int main(int argc, char **argv)
 9: {
10:   if (argc > 1000000) {
11:     int (* volatile tp)(void)=(int (*)(void))&t;
12:     printf("%d", (*tp)());
13:   }
14: 
15:   return !!argv[argc];
16: }
17: extern void rb_io_descriptor();
18: int t(void) { rb_io_descriptor(); return 0; }
/* end */

--------------------

have_library: checking for main() in -lc... -------------------- no

PATH=".;C:/Ruby32-x64/lib;C:\Ruby32-x64\bin;C:\Ruby32-x64\msys64\ucrt64\bin;C:\Ruby32-x64\msys64\usr\bin;C:\cmder\bin;C:\cmder\vendor\bin;C:\cmder\vendor\conemu-maximus5\ConEmu\Scripts;C:\cmder\vendor\conemu-maximus5;C:\cmder\vendor\conemu-maximus5\ConEmu;C:\Program Files\Microsoft\jdk-11.0.12.7-hotspot\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Windows\System32\OpenSSH\;C:\Program Files\Intel\WiFi\bin\;C:\Program Files\Common Files\Intel\WirelessCommon\;C:\Program Files\dotnet\;C:\Program Files\Microsoft SQL Server\130\Tools\Binn\;C:\Program Files\Microsoft SQL Server\Client SDK\ODBC\170\Tools\Binn\;C:\Program Files\CMake\bin;C:\Program Files\Docker\Docker\resources\bin;C:\HashiCorp\Vagrant\bin;C:\Users\reang\AppData\Local\Programs\Python\Python38\Scripts\;C:\Users\reang\AppData\Local\Programs\Python\Python38\;C:\Users\reang\AppData\Local\Microsoft\WindowsApps;C:\Users\reang\AppData\Local\Programs\Microsoft VS Code\bin;C:\Users\reang\.dotnet\tools;C:\Program Files\Sublime Text 3;C:\mingw64\bin;C:\Program Files (x86)\Dr. Memory\bin\;C:\Ruby32-x64\bin;C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2023.3.4\bin;C:\cmder\vendor\git-for-windows\cmd;C:\cmder\vendor\git-for-windows\usr\bin;C:\cmder\vendor\git-for-windows\mingw64\bin;C:\cmder;C:\Users\reang\Documents\WindowsPowerShell\Func;C:\mingw64\bin" "gcc -o conftest.exe -IC:/Ruby32-x64/include/ruby-3.2.0/x64-mingw-ucrt -IC:/Ruby32-x64/include/ruby-3.2.0/ruby/backward -IC:/Ruby32-x64/include/ruby-3.2.0 -I. -D__USE_MINGW_ANSI_STDIO=1 -DFD_SETSIZE=2048 -D_WIN32_WINNT=0x0600 -D__MINGW_USE_VC2005_COMPAT -D_FILE_OFFSET_BITS=64  -O3 -fno-fast-math -fstack-protector-strong conftest.c  -L. -LC:/Ruby32-x64/lib -L. -pipe -s -fstack-protector-strong -Wl,--no-as-needed  -m64   -lx64-ucrt-ruby320 -lc  -lshell32 -lws2_32 -liphlpapi -limagehlp -lshlwapi -lbcrypt  "
C:/Ruby32-x64/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/12.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lc: No such file or directory
collect2.exe: error: ld returned 1 exit status
checked program was:
/* begin */
 1: #include "ruby.h"
 2: 
 3: #include <winsock2.h>
 4: #include <windows.h>
 5: 
 6: /*top*/
 7: extern int t(void);
 8: int main(int argc, char **argv)
 9: {
10:   if (argc > 1000000) {
11:     int (* volatile tp)(void)=(int (*)(void))&t;
12:     printf("%d", (*tp)());
13:   }
14: 
15:   return !!argv[argc];
16: }
17: int t(void) { void ((*volatile p)()); p = (void ((*)()))main; return !p; }
/* end */

PATH=".;C:/Ruby32-x64/lib;C:\Ruby32-x64\bin;C:\Ruby32-x64\msys64\ucrt64\bin;C:\Ruby32-x64\msys64\usr\bin;C:\cmder\bin;C:\cmder\vendor\bin;C:\cmder\vendor\conemu-maximus5\ConEmu\Scripts;C:\cmder\vendor\conemu-maximus5;C:\cmder\vendor\conemu-maximus5\ConEmu;C:\Program Files\Microsoft\jdk-11.0.12.7-hotspot\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Windows\System32\OpenSSH\;C:\Program Files\Intel\WiFi\bin\;C:\Program Files\Common Files\Intel\WirelessCommon\;C:\Program Files\dotnet\;C:\Program Files\Microsoft SQL Server\130\Tools\Binn\;C:\Program Files\Microsoft SQL Server\Client SDK\ODBC\170\Tools\Binn\;C:\Program Files\CMake\bin;C:\Program Files\Docker\Docker\resources\bin;C:\HashiCorp\Vagrant\bin;C:\Users\reang\AppData\Local\Programs\Python\Python38\Scripts\;C:\Users\reang\AppData\Local\Programs\Python\Python38\;C:\Users\reang\AppData\Local\Microsoft\WindowsApps;C:\Users\reang\AppData\Local\Programs\Microsoft VS Code\bin;C:\Users\reang\.dotnet\tools;C:\Program Files\Sublime Text 3;C:\mingw64\bin;C:\Program Files (x86)\Dr. Memory\bin\;C:\Ruby32-x64\bin;C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2023.3.4\bin;C:\cmder\vendor\git-for-windows\cmd;C:\cmder\vendor\git-for-windows\usr\bin;C:\cmder\vendor\git-for-windows\mingw64\bin;C:\cmder;C:\Users\reang\Documents\WindowsPowerShell\Func;C:\mingw64\bin" "gcc -o conftest.exe -IC:/Ruby32-x64/include/ruby-3.2.0/x64-mingw-ucrt -IC:/Ruby32-x64/include/ruby-3.2.0/ruby/backward -IC:/Ruby32-x64/include/ruby-3.2.0 -I. -D__USE_MINGW_ANSI_STDIO=1 -DFD_SETSIZE=2048 -D_WIN32_WINNT=0x0600 -D__MINGW_USE_VC2005_COMPAT -D_FILE_OFFSET_BITS=64  -O3 -fno-fast-math -fstack-protector-strong conftest.c  -L. -LC:/Ruby32-x64/lib -L. -pipe -s -fstack-protector-strong -Wl,--no-as-needed  -m64   -lx64-ucrt-ruby320 -lc  -lshell32 -lws2_32 -liphlpapi -limagehlp -lshlwapi -lbcrypt  "
conftest.c:17:13: error: conflicting types for 'main'; have 'void()'
   17 | extern void main();
      |             ^~~~
conftest.c:8:5: note: previous definition of 'main' with type 'int(int,  char **)'
    8 | int main(int argc, char **argv)
      |     ^~~~
checked program was:
/* begin */
 1: #include "ruby.h"
 2: 
 3: #include <winsock2.h>
 4: #include <windows.h>
 5: 
 6: /*top*/
 7: extern int t(void);
 8: int main(int argc, char **argv)
 9: {
10:   if (argc > 1000000) {
11:     int (* volatile tp)(void)=(int (*)(void))&t;
12:     printf("%d", (*tp)());
13:   }
14: 
15:   return !!argv[argc];
16: }
17: extern void main();
18: int t(void) { main(); return 0; }
/* end */

--------------------

have_macro: checking for HAVE_RB_IO_T in ruby/io.h... -------------------- yes

PATH=".;C:/Ruby32-x64/lib;C:\Ruby32-x64\bin;C:\Ruby32-x64\msys64\ucrt64\bin;C:\Ruby32-x64\msys64\usr\bin;C:\cmder\bin;C:\cmder\vendor\bin;C:\cmder\vendor\conemu-maximus5\ConEmu\Scripts;C:\cmder\vendor\conemu-maximus5;C:\cmder\vendor\conemu-maximus5\ConEmu;C:\Program Files\Microsoft\jdk-11.0.12.7-hotspot\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Windows\System32\OpenSSH\;C:\Program Files\Intel\WiFi\bin\;C:\Program Files\Common Files\Intel\WirelessCommon\;C:\Program Files\dotnet\;C:\Program Files\Microsoft SQL Server\130\Tools\Binn\;C:\Program Files\Microsoft SQL Server\Client SDK\ODBC\170\Tools\Binn\;C:\Program Files\CMake\bin;C:\Program Files\Docker\Docker\resources\bin;C:\HashiCorp\Vagrant\bin;C:\Users\reang\AppData\Local\Programs\Python\Python38\Scripts\;C:\Users\reang\AppData\Local\Programs\Python\Python38\;C:\Users\reang\AppData\Local\Microsoft\WindowsApps;C:\Users\reang\AppData\Local\Programs\Microsoft VS Code\bin;C:\Users\reang\.dotnet\tools;C:\Program Files\Sublime Text 3;C:\mingw64\bin;C:\Program Files (x86)\Dr. Memory\bin\;C:\Ruby32-x64\bin;C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2023.3.4\bin;C:\cmder\vendor\git-for-windows\cmd;C:\cmder\vendor\git-for-windows\usr\bin;C:\cmder\vendor\git-for-windows\mingw64\bin;C:\cmder;C:\Users\reang\Documents\WindowsPowerShell\Func;C:\mingw64\bin" "gcc -IC:/Ruby32-x64/include/ruby-3.2.0/x64-mingw-ucrt -IC:/Ruby32-x64/include/ruby-3.2.0/ruby/backward -IC:/Ruby32-x64/include/ruby-3.2.0 -I. -D__USE_MINGW_ANSI_STDIO=1 -DFD_SETSIZE=2048 -D_WIN32_WINNT=0x0600 -D__MINGW_USE_VC2005_COMPAT -D_FILE_OFFSET_BITS=64  -O3 -fno-fast-math -fstack-protector-strong -m64  -c conftest.c"
checked program was:
/* begin */
 1: #include "ruby.h"
 2: 
 3: #include <winsock2.h>
 4: #include <windows.h>
 5: #include <ruby/io.h>
 6: /*top*/
 7: #ifndef HAVE_RB_IO_T
 8: # error
 9: |:/ === HAVE_RB_IO_T undefined === /:|
10: #endif
/* end */

--------------------

have_struct_member: checking for rb_io_t.fd in ruby/io.h... -------------------- yes

PATH=".;C:/Ruby32-x64/lib;C:\Ruby32-x64\bin;C:\Ruby32-x64\msys64\ucrt64\bin;C:\Ruby32-x64\msys64\usr\bin;C:\cmder\bin;C:\cmder\vendor\bin;C:\cmder\vendor\conemu-maximus5\ConEmu\Scripts;C:\cmder\vendor\conemu-maximus5;C:\cmder\vendor\conemu-maximus5\ConEmu;C:\Program Files\Microsoft\jdk-11.0.12.7-hotspot\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Windows\System32\OpenSSH\;C:\Program Files\Intel\WiFi\bin\;C:\Program Files\Common Files\Intel\WirelessCommon\;C:\Program Files\dotnet\;C:\Program Files\Microsoft SQL Server\130\Tools\Binn\;C:\Program Files\Microsoft SQL Server\Client SDK\ODBC\170\Tools\Binn\;C:\Program Files\CMake\bin;C:\Program Files\Docker\Docker\resources\bin;C:\HashiCorp\Vagrant\bin;C:\Users\reang\AppData\Local\Programs\Python\Python38\Scripts\;C:\Users\reang\AppData\Local\Programs\Python\Python38\;C:\Users\reang\AppData\Local\Microsoft\WindowsApps;C:\Users\reang\AppData\Local\Programs\Microsoft VS Code\bin;C:\Users\reang\.dotnet\tools;C:\Program Files\Sublime Text 3;C:\mingw64\bin;C:\Program Files (x86)\Dr. Memory\bin\;C:\Ruby32-x64\bin;C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2023.3.4\bin;C:\cmder\vendor\git-for-windows\cmd;C:\cmder\vendor\git-for-windows\usr\bin;C:\cmder\vendor\git-for-windows\mingw64\bin;C:\cmder;C:\Users\reang\Documents\WindowsPowerShell\Func;C:\mingw64\bin" "gcc -IC:/Ruby32-x64/include/ruby-3.2.0/x64-mingw-ucrt -IC:/Ruby32-x64/include/ruby-3.2.0/ruby/backward -IC:/Ruby32-x64/include/ruby-3.2.0 -I. -D__USE_MINGW_ANSI_STDIO=1 -DFD_SETSIZE=2048 -D_WIN32_WINNT=0x0600 -D__MINGW_USE_VC2005_COMPAT -D_FILE_OFFSET_BITS=64  -O3 -fno-fast-math -fstack-protector-strong -m64  -c conftest.c"
checked program was:
/* begin */
 1: #include "ruby.h"
 2: 
 3: #include <winsock2.h>
 4: #include <windows.h>
 5: #include <ruby/io.h>
 6: 
 7: /*top*/
 8: int s = (char *)&((rb_io_t*)0)->fd - (char *)0;
 9: int main(int argc, char **argv)
10: {
11:   return !!argv[argc];
12: }
/* end */

--------------------

[daipom]

I have made a PR for cool.io:

• Windows: Fix build error incompatible pointer types socketry/cool.io#81

This has been merged!

[daipom]

It will be released as cool.io v1.8.1.
After that, this issue would be resolved automatically.

[daipom]

cool.io v1.8.1 has been released.
I'm checking the CI in

• log/console_adapter: support 'console' gem v1.25 #4492

[daipom]

I have confirmed this issue is resolved in cool.io v1.8.1.