Should be able to build for Windows using mingw64.exe shell

[c0d3h4x0r]

I've been trying to get mame2016-libretro building under mingw64.exe (rather than the MSYS2-based win32env shell), which has required me to pull in the latest stable version (version 1115 (commit cd9b1a624810b166d11788d01c2aa4daf2ea42e6)) of GENie to resolve some build errors.

With that in place, I still get the following remaining build errors:

:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: ../../../../gmake/libretro/debug/mame_mame/libsega.a(model1.o): in function `model1_state::model1_interrupt(timer_device&, void*, int)':
C:\msys64\src\mame2016-libretro\build\projects\retro\mame\gmake-mingw64-gcc/../../../../../src/mame/drivers/model1.cpp:745: undefined reference to `segam1audio_device::check_fifo_irq()'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: ../../../../gmake/libretro/debug/mame_mame/libsega.a(model1.o): in function `model1_state::snd_68k_ready_r(address_space&, unsigned int, unsigned short)':
C:\msys64\src\mame2016-libretro\build\projects\retro\mame\gmake-mingw64-gcc/../../../../../src/mame/drivers/model1.cpp:848: undefined reference to `segam1audio_device::ready_r(address_space&, unsigned int, unsigned short)'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: ../../../../gmake/libretro/debug/mame_mame/libsega.a(model1.o): in function `model1_state::snd_latch_to_68k_w(address_space&, unsigned int, unsigned short, unsigned short)':
C:\msys64\src\mame2016-libretro\build\projects\retro\mame\gmake-mingw64-gcc/../../../../../src/mame/drivers/model1.cpp:859: undefined reference to `segam1audio_device::write_fifo(unsigned char)'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: ../../../../gmake/libretro/debug/mame_mame/libsega.a(model1.o):model1.cpp:(.rdata$.refptr.SEGAM1AUDIO[.refptr.SEGAM1AUDIO]+0x0): undefined reference to `SEGAM1AUDIO'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: ../../../../gmake/libretro/debug/mame_mame/libsega.a(model2.o): in function `model2_state::model2o_serial_w(address_space&, unsigned int, unsigned int, unsigned int)':
C:\msys64\src\mame2016-libretro\build\projects\retro\mame\gmake-mingw64-gcc/../../../../../src/mame/drivers/model2.cpp:1186: undefined reference to `segam1audio_device::ready_r(address_space&, unsigned int, unsigned short)'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\msys64\src\mame2016-libretro\build\projects\retro\mame\gmake-mingw64-gcc/../../../../../src/mame/drivers/model2.cpp:1191: undefined reference to `segam1audio_device::write_fifo(unsigned char)'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: ../../../../gmake/libretro/debug/mame_mame/libsega.a(model2.o): in function `model2_state::model2_serial_w(address_space&, unsigned int, unsigned int, unsigned int)':
C:\msys64\src\mame2016-libretro\build\projects\retro\mame\gmake-mingw64-gcc/../../../../../src/mame/drivers/model2.cpp:1210: undefined reference to `segam1audio_device::ready_r(address_space&, unsigned int, unsigned short)'
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/9.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\msys64\src\mame2016-libretro\build\projects\retro\mame\gmake-mingw64-gcc/../../../../../src/mame/drivers/model2.cpp:1215: undefined reference to `segam1audio_device::write_fifo(unsigned char)'
collect2.exe: error: ld returned 1 exit status
make[3]: *** [mame2016.make:556: ../../../../../mame2016_libretro.dll] Error 1
make[2]: *** [Makefile:940: mame2016] Error 2
make[2]: Leaving directory '/src/mame2016-libretro/build/projects/retro/mame/gmake-mingw64-gcc'
make[1]: *** [makefile:931: windows_x64] Error 2
make[1]: Leaving directory '/src/mame2016-libretro'
make: *** [Makefile.libretro:198: build] Error 2

This is caused by incorrect library ordering in the generated mame2016.make. libshared.a needs to come before libsega.a in order for that function to be recognized by the linker when it reasons over libsega.a.

The LUA code responsible for this appears to reside in make_cpp.lua, inside the function cpp.linker(). It needs to somehow be adjusted to guarantee the correct relative static library ordering as needed by mame2016-libretro in order to successfully link.

[c0d3h4x0r]

I am working on a fix for this.

[c0d3h4x0r]

I've think I've finally got this working. I had to add a table-ordering hack to make_cpp.lua in GENie, then run genie embed to force scripts.c to get regenerated correctly, then rebuild mame2016-libretro with REGENIE=1.

[y0ush4]

can you please guide me whats wrong

Generating ../build/projects/windows/mame/gmake-mingw64-gcc/zenith.make...
Generating ../build/projects/windows/mame/gmake-mingw64-gcc/zpa.make...
Generating ../build/projects/windows/mame/gmake-mingw64-gcc/zvt.make...
Generating ../build/projects/windows/mame/gmake-mingw64-gcc/skeleton.make...
Generating ../build/projects/windows/mame/gmake-mingw64-gcc/mame2016.make...
Done.
Precompiling src/emu/emu.h...
In file included from ../../../../../src/emu/emu.h:60:
../../../../../src/emu/input.h: In copy constructor 'input_seq::input_seq(const input_seq&)':
../../../../../src/emu/input.h:451:49: error: 'void* memcpy(void*, const void*, size_t)' writing to an object of non-trivially copyable type 'class input_code'; use copy-assignment or copy-initialization instead [-Werror=class-memaccess]
451 | input_seq(const input_seq &rhs) { memcpy(m_code, rhs.m_code, sizeof(m_code)); }
| ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../../../../../src/emu/emu.h:60:
../../../../../src/emu/input.h:400:7: note: 'class input_code' declared here
400 | class input_code
| ^~~~~~~~~~
cc1plus.exe: all warnings being treated as errors
precompile.make:455: recipe for target '../../../../mingw-gcc/obj/x64/Release/emu.h.gch' failed
make[2]: *** [../../../../mingw-gcc/obj/x64/Release/emu.h.gch] Error 1
makefile:70: recipe for target 'precompile' failed
make[1]: *** [precompile] Error 2
makefile:930: recipe for target 'windows_x64' failed
make: *** [windows_x64] Error 2

[MINGW64] C:\msys64\src\mame2016-libretro>cc1plus.exe: all warnings being treated as errors
'cc1plus.exe:' is not recognized as an internal or external command,
operable program or batch file.