ci: bundle DLL hell with windows builds

.github/workflows/c-cpp.yml

@@ -33,6 +33,7 @@ jobs:
         run: |
           mkdir -p bin/data
           cp build/ntsc-final-port/pd.exe bin/
+          cp /mingw32/bin/{SDL2.dll,zlib1.dll,libgcc_s_dw2-1.dll,libwinpthread-1.dll} bin/
           touch bin/data/put_your_rom_here.txt
       - name: Upload artifact
         uses: actions/upload-artifact@v3

Makefile.port

@@ -130,7 +130,7 @@ G_DIR := src/generated/$(ROMID)
 
 ifneq (,$(findstring windows,$(TARGET_PLATFORM)))
   TARGET_CFLAGS := $(shell pkg-config sdl2 --cflags-only-I)
-  TARGET_LDFLAGS := $(shell pkg-config sdl2 --libs) -lz -lopengl32
+  TARGET_LDFLAGS := $(shell pkg-config sdl2 --libs) -lz -lopengl32 -static-libstdc++
   # on windows/mingw we need this to be built with a 32-bit compiler so it finds the correct libs
   TOOLCHAIN := i686-w64-mingw32-
 else # TODO