Fix gem installation problems on 64-bit Windows

[jlnr]

Trying to fix #670... @cyberarm Do you have tooling set up to verify this? Since GitHub Actions didn't catch the original issue, I can't use it to verify this fix, and I will be away from my Windows machine for another few days.

[cyberarm]

I'll give it a go tomorrow (~12 hours from now)

[cyberarm]

From: d2822c0
Error

linking shared-object gosu-ffi.so
[...]/x86_64-w64-mingw32/bin/ld.exe: cannot export Init_gosu: symbol not defined

Log

PS C:\Users\cyber\Code\gosu> rake GOSU_RELEASE_VERSION=9.9.9 gem
[...]

PS C:\Users\cyber\Code\gosu> gem install .\pkg\gosu-9.9.9.gem
Temporarily enhancing PATH for MSYS/MINGW...
Building native extensions. This could take a while...
ERROR:  Error installing .\pkg\gosu-9.9.9.gem:
        ERROR: Failed to build gem native extension.

    current directory: C:/Users/cyber/Rubies/Ruby32-x64/lib/ruby/gems/3.2.0/gems/gosu-9.9.9/ext/gosu-ffi
C:/Users/cyber/Rubies/Ruby32-x64/bin/ruby.exe extconf.rb
creating Makefile

current directory: C:/Users/cyber/Rubies/Ruby32-x64/lib/ruby/gems/3.2.0/gems/gosu-9.9.9/ext/gosu-ffi
make DESTDIR\= sitearchdir\=./.gem.20230817-37100-hyizaq sitelibdir\=./.gem.20230817-37100-hyizaq clean

current directory: C:/Users/cyber/Rubies/Ruby32-x64/lib/ruby/gems/3.2.0/gems/gosu-9.9.9/ext/gosu-ffi
make DESTDIR\= sitearchdir\=./.gem.20230817-37100-hyizaq sitelibdir\=./.gem.20230817-37100-hyizaq
generating gosu-ffi-x64-mingw-ucrt.def
compiling ./../../dependencies/SDL_sound/SDL_sound.c
compiling ./../../dependencies/SDL_sound/SDL_sound_aiff.c
compiling ./../../dependencies/SDL_sound/SDL_sound_au.c
compiling ./../../dependencies/SDL_sound/SDL_sound_coreaudio.c
compiling ./../../dependencies/SDL_sound/SDL_sound_flac.c
compiling ./../../dependencies/SDL_sound/SDL_sound_modplug.c
compiling ./../../dependencies/SDL_sound/SDL_sound_mp3.c
compiling ./../../dependencies/SDL_sound/SDL_sound_raw.c
compiling ./../../dependencies/SDL_sound/SDL_sound_shn.c
compiling ./../../dependencies/SDL_sound/SDL_sound_voc.c
compiling ./../../dependencies/SDL_sound/SDL_sound_vorbis.c
compiling ./../../dependencies/SDL_sound/SDL_sound_wav.c
compiling ./../../dependencies/SDL_sound/libmodplug/fastmix.c
compiling ./../../dependencies/SDL_sound/libmodplug/load_669.c
compiling ./../../dependencies/SDL_sound/libmodplug/load_amf.c
compiling ./../../dependencies/SDL_sound/libmodplug/load_ams.c
compiling ./../../dependencies/SDL_sound/libmodplug/load_dbm.c
compiling ./../../dependencies/SDL_sound/libmodplug/load_dmf.c
compiling ./../../dependencies/SDL_sound/libmodplug/load_dsm.c
compiling ./../../dependencies/SDL_sound/libmodplug/load_far.c
compiling ./../../dependencies/SDL_sound/libmodplug/load_gdm.c
compiling ./../../dependencies/SDL_sound/libmodplug/load_it.c
compiling ./../../dependencies/SDL_sound/libmodplug/load_mdl.c
compiling ./../../dependencies/SDL_sound/libmodplug/load_med.c
compiling ./../../dependencies/SDL_sound/libmodplug/load_mod.c
compiling ./../../dependencies/SDL_sound/libmodplug/load_mt2.c
compiling ./../../dependencies/SDL_sound/libmodplug/load_mtm.c
compiling ./../../dependencies/SDL_sound/libmodplug/load_okt.c
compiling ./../../dependencies/SDL_sound/libmodplug/load_psm.c
compiling ./../../dependencies/SDL_sound/libmodplug/load_ptm.c
compiling ./../../dependencies/SDL_sound/libmodplug/load_s3m.c
compiling ./../../dependencies/SDL_sound/libmodplug/load_stm.c
compiling ./../../dependencies/SDL_sound/libmodplug/load_ult.c
compiling ./../../dependencies/SDL_sound/libmodplug/load_umx.c
compiling ./../../dependencies/SDL_sound/libmodplug/load_xm.c
compiling ./../../dependencies/SDL_sound/libmodplug/mmcmp.c
compiling ./../../dependencies/SDL_sound/libmodplug/modplug.c
compiling ./../../dependencies/SDL_sound/libmodplug/snd_dsp.c
compiling ./../../dependencies/SDL_sound/libmodplug/snd_flt.c
compiling ./../../dependencies/SDL_sound/libmodplug/sndfile.c
compiling ./../../dependencies/SDL_sound/libmodplug/sndmix.c
compiling ./../../dependencies/mojoAL/mojoal.c
compiling ./../../dependencies/utf8proc/utf8proc.c
compiling ./../../src/Audio.cpp
compiling ./../../src/AudioFileAudioToolbox.cpp
compiling ./../../src/AudioFileSDLSound.cpp
compiling ./../../src/AudioImpl.cpp
compiling ./../../src/BinPacker.cpp
compiling ./../../src/Bitmap.cpp
compiling ./../../src/BitmapIO.cpp
compiling ./../../src/Buffer.cpp
compiling ./../../src/Channel.cpp
compiling ./../../src/Color.cpp
compiling ./../../src/Directories.cpp
compiling ./../../src/DirectoriesUIKit.cpp
compiling ./../../src/Drawable.cpp
compiling ./../../src/FPS.cpp
compiling ./../../src/Font.cpp
compiling ./../../src/GosuGLView.cpp
compiling ./../../src/GosuViewController.cpp
compiling ./../../src/Graphics.cpp
compiling ./../../src/Image.cpp
compiling ./../../src/Input.cpp
compiling ./../../src/InputUIKit.cpp
compiling ./../../src/Macro.cpp
compiling ./../../src/MarkupParser.cpp
compiling ./../../src/Math.cpp
compiling ./../../src/OffScreenTarget.cpp
compiling ./../../src/OpenGLContext.cpp
compiling ./../../src/Resolution.cpp
compiling ./../../src/TexChunk.cpp
compiling ./../../src/Text.cpp
compiling ./../../src/TextBuilder.cpp
compiling ./../../src/TextInput.cpp
compiling ./../../src/Texture.cpp
compiling ./../../src/TiledDrawable.cpp
compiling ./../../src/TimingApple.cpp
compiling ./../../src/TimingUnix.cpp
compiling ./../../src/TimingWin.cpp
compiling ./../../src/Transform.cpp
compiling ./../../src/TrueTypeFont.cpp
compiling ./../../src/TrueTypeFontApple.cpp
compiling ./../../src/TrueTypeFontUnix.cpp
compiling ./../../src/TrueTypeFontWin.cpp
compiling ./../../src/Utility.cpp
compiling ./../../src/UtilityWin.cpp
compiling ./../../src/Version.cpp
compiling ./../../src/Window.cpp
compiling ./../../src/WindowUIKit.cpp
compiling ./../../ffi/Gosu.cpp
compiling ./../../ffi/Gosu_Channel.cpp
compiling ./../../ffi/Gosu_Color.cpp
compiling ./../../ffi/Gosu_Constants.cpp
compiling ./../../ffi/Gosu_Font.cpp
compiling ./../../ffi/Gosu_Image.cpp
compiling ./../../ffi/Gosu_Sample.cpp
compiling ./../../ffi/Gosu_Song.cpp
compiling ./../../ffi/Gosu_TextInput.cpp
compiling ./../../ffi/Gosu_Window.cpp
linking shared-object gosu-ffi.so
C:/Users/cyber/Rubies/Ruby32-x64/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/12.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot export Init_gosu: symbol not defined
collect2.exe: error: ld returned 1 exit status
make: *** [Makefile:265: gosu-ffi.so] Error 1

make failed, exit code 2

Gem files will remain installed in C:/Users/cyber/Rubies/Ruby32-x64/lib/ruby/gems/3.2.0/gems/gosu-9.9.9 for inspection.
Results logged to C:/Users/cyber/Rubies/Ruby32-x64/lib/ruby/gems/3.2.0/extensions/x64-mingw-ucrt/3.2.0/gosu-9.9.9/gem_make.out

[jlnr]

Thanks for testing! Aha, it turns out the odd command line for running Ruby tests on Windows was broken. (It used to work on Appveyor...) Now I can reproduce the error using GitHub Actions too.