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# based on https://makefiletutorial.com/#makefile-cookbook
TARGET_EXEC := game
BUILD_DIR := ./build
EXTERNAL_DIR := ./external
SRC_DIRS := ./src
EXTERNAL_INC_DIRS := $(addprefix $(EXTERNAL_DIR)/, raygui/src raygui/styles raylib/src STC/include)
WFLAGS := -m64 -std=c99 -Wall -Wextra -Wshadow -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wfloat-equal -Wformat=2 -Werror \
-Wno-error=unused-variable -Wno-error=missing-prototypes -Wno-error=float-equal -Wno-error=unused-parameter -Wno-error=cast-qual -Wno-error=shadow
# Find all the C and C++ files we want to compile
# Note the single quotes around the * expressions. The shell will incorrectly expand these otherwise, but we want to send the * directly to the find command.
SRCS := $(shell find $(SRC_DIRS) -name '*.cpp' -or -name '*.c' -or -name '*.s')
# Prepends BUILD_DIR and appends .o to every src file
# As an example, ./your_dir/hello.cpp turns into ./build/./your_dir/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)
# Add a prefix to INC_DIRS. So moduleA would become -ImoduleA. GCC understands this -I flag
INC_FLAGS := $(addprefix -I,$(INC_DIRS) $(EXTERNAL_INC_DIRS))
# 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
# -Xlinker -rpath tells executable where to look for shared libraries at runtime
LDFLAGS := $(addprefix -L,$(EXTERNAL_INC_DIRS)) $(addprefix -Xlinker -rpath=,$(EXTERNAL_INC_DIRS)) -lraylib -lm -lpthread -ldl -lrt -lX11
# Note: might need to change CC to CXX once we have a C++ lib
# The final build step.
$(BUILD_DIR)/$(TARGET_EXEC): $(OBJS) raylib
$(CC) $(OBJS) -o $@ $(LDFLAGS)
# Build step for C source
$(BUILD_DIR)/%.c.o: %.c
mkdir -p $(dir $@)
$(CC) $(CPPFLAGS) $(CFLAGS) $(WFLAGS) -g -c $< -o $@
.PHONY: play
play: $(BUILD_DIR)/$(TARGET_EXEC)
./$(BUILD_DIR)/$(TARGET_EXEC)
.PHONY: raylib
raylib: $(EXTERNAL_DIR)/raylib/src/libraylib.so
$(EXTERNAL_DIR)/raylib/src/libraylib.so:
$(MAKE) -C $(EXTERNAL_DIR)/raylib/src RAYLIB_LIBTYPE=SHARED
.PHONY: bear
bear: clean
bear -- make
.PHONY: clean
clean:
rm -r $(BUILD_DIR) || true # always succeed even if no such file
.PHONY: deepclean
deepclean: clean
$(MAKE) -C external/dev/raylib/src clean
# 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)
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