diff --git a/3rdparty/Makefile b/3rdparty/Makefile
index 9a9f5503..54ff37f8 100644
--- a/3rdparty/Makefile
+++ b/3rdparty/Makefile
@@ -390,12 +390,23 @@ $(PREFIX)/lib/libSDL_image.a:	$(PREFIX)/lib/libSDLmain.a
 
 $(PREFIX)/lib/libSDL_image.a:	$(SDLIMAGE)/.ok
 	$(MKDIR) $(SDLIMAGE)/build
+ifneq ($(LDFLAGS),)
 	cd $(SDLIMAGE)/build && CC="$(CC) $(LDFLAGS)" CPPFLAGS=-I$(PREFIX)/include \
 	  LDFLAGS="-L$(PREFIX)/lib $(ADDLDFLAGS)" \
 	  ../configure --prefix=$(PREFIX) --with-sdl-prefix=$(PREFIX) \
 	  --host=$(HOST) --build=$(BUILD) \
 	  --disable-webp --disable-imageio --disable-sdltest \
-	  --disable-jpg-shared --disable-png-shared --disable-tif-shared
+	  --disable-jpg-shared --disable-png-shared --disable-tif-shared \
+	  --disable-dependency-tracking
+else
+	cd $(SDLIMAGE)/build && CPPFLAGS=-I$(PREFIX)/include \
+	  LDFLAGS="-L$(PREFIX)/lib $(ADDLDFLAGS)" \
+	  ../configure --prefix=$(PREFIX) --with-sdl-prefix=$(PREFIX) \
+	  --host=$(HOST) --build=$(BUILD) \
+	  --disable-webp --disable-imageio --disable-sdltest \
+	  --disable-jpg-shared --disable-png-shared --disable-tif-shared \
+	  --disable-dependency-tracking
+endif
 	cd $(SDLIMAGE)/build && $(MAKE)
 	cd $(SDLIMAGE)/build && $(MAKE) install
 ifdef WIN32
diff --git a/appveyor.yml b/appveyor.yml
new file mode 100644
index 00000000..3a2020f3
--- /dev/null
+++ b/appveyor.yml
@@ -0,0 +1,18 @@
+install:
+  - set PATH=C:\msys64\mingw32\bin;C:\msys64\usr\bin;%PATH%
+  - mingw32-make -v
+  - make -v
+
+build_script:
+  - mingw32-make 3rdparty API=win32
+  - mingw32-make API=win32
+  - mingw32-make ziprelease API=win32
+  - mingw32-make 3rdparty
+  - mingw32-make
+  - mingw32-make ziprelease
+
+artifacts:
+  - path: '*.zip'
+    name: GrafX2 portable installation
+  - path: 'install\*.exe'
+    name: GrafX2 installer