Add dockerimage for building windows version

.gitignore

@@ -5,3 +5,4 @@ cmake/
 *.elf
 *.rpx
 *.exe
+build-pc-win/

Dockerfile.pc-win

@@ -0,0 +1,22 @@
+FROM dockcross/windows-shared-x64:latest
+
+RUN apt-get update && apt-get install -y gnupg
+#Use http://mirror.mxe.cc/
+#First add the repository and install the static gcc compiler. This ensures that everything basic is setup.
+RUN echo "deb http://pkg.mxe.cc/repos/apt xenial main" > \
+   /etc/apt/sources.list.d/mxeapt.list && \
+   apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 86B72ED9 && \
+   apt-get update && \
+   apt-get install -y mxe-i686-w64-mingw32.static-gcc \
+   nsis \
+   zip \
+   libtool
+
+RUN apt-get update && wget -O - http://mirror.mxe.cc/repos/apt/dists/stretch/main/binary-amd64/Packages | grep Package | grep shared | grep sdl2 | awk '{print $2}' | xargs apt-get install -y
+
+ENV MINGW64_PREFIX=/usr/src/mxe/usr/bin/x86_64-w64-mingw32.shared-
+ENV CONFIG_PREFIX=/usr/lib/mxe/usr/bin/x86_64-w64-mingw32.shared-
+ENV EXTRA_CFLAGS=-I/usr/lib/mxe/usr/x86_64-w64-mingw32.shared/include
+ENV EXTRA_LDFLAGS=-L/usr/lib/mxe/usr/x86_64-w64-mingw32.shared/lib
+
+WORKDIR /project

Makefile.pc-win

@@ -2,13 +2,21 @@
 .SUFFIXES:
 #-------------------------------------------------------------------------------
 
-ifeq ($(strip $(DEVKITPRO)),)
+ifeq ($(strip $(MINGW64_PREFIX)),)
-$(error "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to>/devkitpro")
+    $(error "Please set MINGW64_PREFIX in your environment. export MINGW64_PREFIX=<path to>/mingw64/bin/")
+endif
+
+
+CXX	:= $(MINGW64_PREFIX)g++
+C	:= $(MINGW64_PREFIX)gcc
+PREFIX	:= $(MINGW64_PREFIX)
+
+ifeq ($(strip $(CONFIG_PREFIX)),)
+ PKG-CONFIG := $(PREFIX)pkg-config
+else 
+ PKG-CONFIG := $(CONFIG_PREFIX)pkg-config
 endif
 
-CXX	:= $(DEVKITPRO)/msys2/mingw64/bin/g++
-C	:= $(DEVKITPRO)/msys2/mingw64/bin/gcc
-PREFIX	:= $(DEVKITPRO)/msys2/mingw64/bin/
 
 #-------------------------------------------------------------------------------
 # TARGET is the name of the output
@@ -18,34 +26,42 @@ PREFIX	:= $(DEVKITPRO)/msys2/mingw64/bin/
 # INCLUDES is a list of directories containing header files
 #-------------------------------------------------------------------------------
 TARGET		:=	SDL2_Playground
-BUILD		:=	build
+BUILD		:=	build-pc-win
 SOURCES		:=	src \
                 src/gui
 DATA		:=	data
 INCLUDES	:=	source
 
-
 #-------------------------------------------------------------------------------
 # options for code generation
 #-------------------------------------------------------------------------------
-+CFLAGS :=  -g -Wall -O2 -ffunction-sections `$(PREFIX)pkg-config --cflags SDL2_mixer SDL2_ttf SDL2_image` \
+CFLAGS :=  -g -Wall -O2 -ffunction-sections `$(PKG-CONFIG) --cflags SDL2_mixer SDL2_ttf SDL2_image` \
 			$(MACHDEP)
 
 CFLAGS	+=	$(INCLUDE)
 
-CXXFLAGS	:= $(CFLAGS) -std=c++20
+
+ifeq ($(strip $(EXTRA_CFLAGS)),)
+else 
+ CFLAGS	+= $(EXTRA_CFLAGS)
+endif
+
+CXXFLAGS	:= $(CFLAGS) -std=c++17
 
 ASFLAGS	:=	-g $(ARCH)
 LDFLAGS	=	-g $(ARCH)
 
-LIBS   :=   `$(PREFIX)pkg-config --libs SDL2_mixer SDL2_ttf SDL2_image`
+LIBS   :=   `$(PKG-CONFIG) --libs SDL2_mixer SDL2_ttf SDL2_image`
-
+    ifeq ($(strip $(EXTRA_LDFLAGS)),)
+else 
+    LDFLAGS	+= $(EXTRA_LDFLAGS)
+endif
 
 #-------------------------------------------------------------------------------
 # list of directories containing libraries, this must be the top level
 # containing include and lib
 #-------------------------------------------------------------------------------
-LIBDIRS	:= $(PORTLIBS)
+LIBDIRS	:= 
 
 #-------------------------------------------------------------------------------
 # no real need to edit anything past this point unless you need to add additional
@@ -104,7 +120,7 @@ $(BUILD):
 #-------------------------------------------------------------------------------
 clean:
 	@echo clean ...
-	@rm -fr $(BUILD) $(TARGET).rpx $(TARGET).elf
+	@rm -fr $(BUILD) $(TARGET).exe
 
 #-------------------------------------------------------------------------------
 else
@@ -129,10 +145,6 @@ $(OUTPUT).exe:
 	@echo "$(notdir $<)"	
 	@$(CXX) -MMD -MP -MF $(DEPSDIR)/$*.d $(CXXFLAGS)  -c $< -o $@ $(ERROR_FILTER)
 
-clean:
-	rm -f $(OBJS) $(OBJ_NAME) $(MINIZIP_O)
-
-
 -include $(DEPENDS)
 
 #-------------------------------------------------------------------------------

README.md

@@ -17,6 +17,13 @@ pacman -S git mingw-w64-x86_64-toolchain mingw64/mingw-w64-x86_64-SDL2 mingw64/m
 make -f .\Makefile.pc-win
 ```
 
+## Windows with docker
+
+```
+docker build . -f .\Dockerfile.pc-win  -t sdl2_playground-builder-pc-win
+docker run -it --rm -v ${PWD}:/project sdl2_playground-builder-pc-win make -f .\Makefile.pc-win -j16
+```
+
 ## Wii U
 
 And these from [dkp-libs](https://devkitpro.org/wiki/devkitPro_pacman):