Linux support

Makefile_linux

+CC = clang++
+LD = clang++
+CPPFLAGS = -std=c++17  -I./include -I/usr/include/ -I/usr/include/SDL2 -D_THREAD_SAFE
+CFLAGS =  -I./include -I/usr/include/ -D_THREAD_SAFE -I/usr/include/SDL2
+LDFLAGS = -L/usr/lib -lSDL2 -lSDL2_ttf -lSDL2_image -lfreetype -lpng -lwebp -ltiff -ljpeg -lbz2 -lz -framework OpenGL
+
+ROOTDIR = ./
+
+CP = cp
+ECHO = echo
+
+BUILD_DIR = build
+
+C_SOURCES = src/SDL_FontCache.c
+CPP_SOURCES = src/app.cpp src/context.cpp
+
+OBJECTS = $(addprefix $(BUILD_DIR)/,$(notdir $(CPP_SOURCES:.cpp=.o)))
+vpath %.cpp $(sort $(dir $(CPP_SOURCES)))
+vpath %.cpp examples
+vpath %.cpp assignment
+
+OBJECTS += $(addprefix $(BUILD_DIR)/,$(notdir $(C_SOURCES:.c=.o)))
+vpath %.c $(sort $(dir $(C_SOURCES)))
+
+$(BUILD_DIR)/%.o: %.cpp Makefile | $(BUILD_DIR)
+	$(ECHO) compiling $<
+	$(CC) -c $(CPPFLAGS) $< -o $@
+
+$(BUILD_DIR)/%.o: %.c Makefile | $(BUILD_DIR)
+	$(ECHO) compiling $<
+	clang -c $(CFLAGS) $< -o $@
+
+all: $(BUILD_DIR)/splat $(BUILD_DIR)/shapes $(BUILD_DIR)/sprite $(BUILD_DIR)/assignment
+
+$(BUILD_DIR)/splat: $(OBJECTS) $(BUILD_DIR)/splat.o Makefile
+	$(ECHO) linking $<
+	$(CC) -L/usr/lib -lSDL2 -lSDL2_ttf -lSDL2_image -lfreetype -lpng -ltiff -ljpeg -lbz2 -lz -o $@ $(OBJECTS) build/splat.o
+	$(ECHO) success
+
+$(BUILD_DIR)/shapes: $(OBJECTS) $(BUILD_DIR)/shapes.o Makefile
+	$(ECHO) linking $<
+	$(CC) -L/usr/lib -lSDL2 -lSDL2_ttf -lSDL2_image -lfreetype -lpng  -ltiff -ljpeg -lbz2 -lz -o $@ $(OBJECTS) build/shapes.o
+	$(ECHO) success
+
+$(BUILD_DIR)/sprite: $(OBJECTS) $(BUILD_DIR)/sprite.o Makefile
+	$(ECHO) linking $<
+	$(CC) -L/usr/lib -lSDL2 -lSDL2_ttf -lSDL2_image -lfreetype -lpng -ltiff -ljpeg -lbz2 -lz -o $@ $(OBJECTS) build/sprite.o
+	$(ECHO) success
+
+$(BUILD_DIR)/assignment: $(OBJECTS) $(BUILD_DIR)/assignment.o Makefile
+	$(ECHO) linking $<
+	$(CC) -L/usr/lib -lSDL2 -lSDL2_ttf -lSDL2_image -lfreetype -lpng -ltiff -ljpeg -lbz2 -lz -o $@ $(OBJECTS) build/assignment.o
+	$(ECHO) success
+
+#######################################
+# clean up
+#######################################
+clean:
+	-rm -fR $(BUILD_DIR)/assignment $(BUILD_DIR)/sprite $(BUILD_DIR)/shapes $(BUILD_DIR)/splat $(BUILD_DIR)/*.o
+
+#######################################
+# dependencies
+#######################################
+-include $(shell mkdir .dep 2>/dev/null) $(wildcard .dep/*)
+
+.PHONY: clean all

README.md

@@ -127,6 +127,45 @@ To run an example or the assigment, simply run the command, e.g. **./shapes.exe*
 in the same directory. (Note: it is important that you run the executables in the
 **window_build** directory.)
 
+## Linux
+
+For Linux you need to first install the packages
+
+> sudo apt install libsdl2-dev
+> sudo apt install libsdl2-image-dev
+> sudo apt install libsdl2-ttf-dev
+> sudo apt install libfreetype6-dev
+> sudo apt install libtiff-dev
+> sudo apt install libbz2-dev
+
+To make it slightly easier to build both the examples and the assigment itself a Makefile is provided:
+
+- **Makefile_linux**
+
+To build run the command:
+
+```bash
+make -f Makefile_linux
+```
+
+in the root directory. This will build the resulting 
+executables in the directory **build**. **build** will
+contain the example executables:
+
+```bash
+./build/shapes
+./build/splat
+./build/sprite
+```
+
+and for the assigment:
+
+```bash
+./build/assignment
+```
+
+To run an example or the assigment, simply run the executable from the root directory, e.g. **./build/shapes**. 
+
 ## OS X 
 
 > Note: ARM based Macs (M1 or M2)