49 lines
1.6 KiB
Makefile
49 lines
1.6 KiB
Makefile
|
TARGET_EXEC := rts_game
|
||
|
|
|
||
|
|
BUILD_DIR := ./build
|
||
|
|
SRC_DIRS := ./src
|
||
|
|
|
||
|
|
# 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))
|
||
|
|
|
||
|
|
# 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)
|
||
|
|
$(CXX) $(OBJS) -o $@ $(LDFLAGS)
|
||
|
|
|
||
|
|
# Build step for C source
|
||
|
|
$(BUILD_DIR)/%.c.o: %.c
|
||
|
|
mkdir -p $(dir $@)
|
||
|
|
$(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@
|
||
|
|
|
||
|
|
# Build step for C++ source
|
||
|
|
$(BUILD_DIR)/%.cpp.o: %.cpp
|
||
|
|
mkdir -p $(dir $@)
|
||
|
|
$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c $< -o $@
|
||
|
|
|
||
|
|
|
||
|
|
.PHONY: clean
|
||
|
|
clean:
|
||
|
|
rm -r $(BUILD_DIR)
|
||
|
|
|
||
|
|
# 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)
|