made build system

1 files changed, 83 insertions, 0 deletions

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..b17054b
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,83 @@
+# Thanks to Job Vranish (https://spin.atomicobject.com/2016/08/26/makefile-c-projects/)
+TARGET_EXEC := final_program
+
+# web platform build doesnt work
+TARGET_PLATFORM ?= DESKTOP
+
+ifeq ($(TARGET_PLATFORM),DESKTOP)
+	BUILD_DIR := build/desktop
+	RAYLIB_FLAGS := -lGL -lm -lpthread -ldl -lrt -lX11
+endif
+# web doesnt work
+ifeq ($(TARGET_PLATFORM),WEB)
+	BUILD_DIR := build/web
+	RAYLIB_FLAGS := -Os -Wall -s USE_GLFW=3 -s ASYNCIFY -DPLATFORM_WEB
+	CXX := em++
+	CC := emcc
+endif
+SRC_DIRS := src
+
+RAYLIB_SRC := vendor/raylib/src
+RAYLIB_LIB := $(BUILD_DIR)/raylib/libraylib.a
+
+# Find all the C and C++ files we want to compile
+# Note the single quotes around the * expressions. Make will incorrectly expand these otherwise.
+SRCS := $(shell find $(SRC_DIRS) -name '*.cpp' -or -name '*.c' -or -name '*.s')
+
+# String substitution for every C/C++ file.
+# As an example, hello.cpp turns into ./build/hello.cpp.o
+OBJS := $(SRCS:%=$(BUILD_DIR)/%.o)
+
+# String substitution (suffix version without %).
+# As an example, ./build/hello.cpp.o turns into ./build/hello.cpp.d
+DEPS := $(OBJS:.o=.d)
+
+# Every folder in ./src will need to be passed to GCC so that it can find header files
+INC_DIRS := $(shell find $(SRC_DIRS) -type d) $(RAYLIB_SRC)
+
+# Add a prefix to INC_DIRS. So moduleA would become -ImoduleA. GCC understands this -I flag
+INC_FLAGS := $(addprefix -I,$(INC_DIRS)) $(RAYLIB_LIB) $(RAYLIB_FLAGS)
+
+# The -MMD and -MP flags together generate Makefiles for us!
+# These files will have .d instead of .o as the output.
+CPPFLAGS := $(INC_FLAGS) -MMD -MP
+
+# The final build step.
+$(BUILD_DIR)/$(TARGET_EXEC): $(OBJS) raylib
+	$(CXX) $(OBJS) -o $@ $(LDFLAGS) $(RAYLIB_LIB) $(RAYLIB_FLAGS)
+
+run: $(BUILD_DIR)/$(TARGET_EXEC)
+	./$(BUILD_DIR)/$(TARGET_EXEC)
+
+
+# Build step for C source
+$(BUILD_DIR)/%.c.o: %.c raylib
+	mkdir -p $(dir $@)
+	$(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@
+
+# Build step for C++ source
+$(BUILD_DIR)/%.cpp.o: %.cpp raylib
+	mkdir -p $(dir $@)
+	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c $< -o $@
+
+#vendor/raylib/src/libraylib.a
+raylib: 
+ifeq ($(TARGET_PLATFORM),DESKTOP)
+	$(MAKE) -C vendor/raylib/src
+	mkdir -p $(BUILD_DIR)/raylib
+	cp vendor/raylib/src/libraylib.a $(RAYLIB_LIB)
+endif
+ifeq ($(TARGET_PLATFORM),WEB)
+	$(MAKE) PLATFORM=PLATFORM_WEB -B -e -C vendor/raylib/src
+	mkdir -p $(BUILD_DIR)/raylib
+	cp vendor/raylib/src/libraylib.a $(RAYLIB_LIB)
+endif
+
+.PHONY: clean
+clean:
+	rm -r build
+
+# Include the .d makefiles. The - at the front suppresses the errors of missing
+# Makefiles. Initially, all the .d files will be missing, and we don't want those
+# errors to show up.
+-include $(DEPS)