Compilation for Windows on Linux fails with "undefined reference to `WinMain'"

[vanous]

Hello,

new to nim and nimx. setting up my environment (debian amd64). Compilation of your hello world on linux for linux works OK, but when trying to cross compile for WIN target:

nim --os:windows --cpu:amd64 --gcc.exe:x86_64-w64-mingw32-gcc --gcc.linkerexe:x86_64-w64-mingw32-gcc --app:gui -r --noMain --threads:on c main.nim

it fails (probably during linking) with this message:

/usr/lib/gcc/x86_64-w64-mingw32/6.3-win32/../../../../x86_64-w64-mingw32/lib/libmingw32.a(lib64_libmingw32_a-crt0_c.o): In function main': ./mingw-w64-crt/crt/crt0_c.c:18: undefined reference toWinMain' collect2: error: ld returned 1 exit status

Full log here: https://pastebin.com/UwfB8D4J

Or do i need to cross-compile libsdl2 first?

thank you

[Tormund]

You can try compile with -d:nimxAvoidSDL to use experimental winapi instead of sdl.

[vanous]

thank you, bu no luck, same error:

nim --os:windows --cpu:amd64 --gcc.exe:x86_64-w64-mingw32-gcc --gcc.linkerexe:x86_64-w64-mingw32-gcc --app:gui -r --noMain --threads:on -d:nimxAvoidSDL c main.nim

/usr/lib/gcc/x86_64-w64-mingw32/6.3-win32/../../../../x86_64-w64-mingw32/lib/libmingw32.a(lib64_libmingw32_a-crt0_c.o): In function main': ./mingw-w64-crt/crt/crt0_c.c:18: undefined reference toWinMain'

[yglukhov]

Don't use --noMain. For windows we need WinMain.

nim --os:windows --cpu:amd64 --gcc.exe:x86_64-w64-mingw32-gcc --gcc.linkerexe:x86_64-w64-mingw32-gcc --app:gui -r --threads:on c main.nim

[vanous]

thank you, this worked!