QMKhost/Makefile

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Makefile
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TARGET_EXEC := test
BUILD_DIR := ./build
SRC_DIRS := ./src
# False targets
# (these are the only ones you manually run)
all: $(TARGET_EXEC)
run: all
./$(TARGET_EXEC)
clean:
-rm -r $(BUILD_DIR)
@echo ""
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libs: $(BUILD_DIR)/hid.o
.PHONY: clean all run libs
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#################################################
# Flags and autodetection
# -MMD and -MP generate makefiles with extension .d.
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CPPFLAGS := -MMD -MP \
-Wall \
-I src \
-I libs/hidapi/hidapi
# udev: required by hidapi
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LDFLAGS := -l fftw3 -l udev
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# Find all cpp files in source dirs
SRCS := $(shell find $(SRC_DIRS) -name '*.cpp')
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# Turns src/a.cpp into build/src/a.cpp.o
SRC_OBJS := $(SRCS:%=$(BUILD_DIR)/%.o)
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LIB_OBJS := $(BUILD_DIR)/hid.o
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OBJS = $(SRC_OBJS) $(LIB_OBJS)
# Turns build/a.cpp.o into build/a.cpp.d
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DEPS := $(OBJS:.o=.d)
#################################################
# Build targets
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### Libraries
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# Build hidapi
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HIDAPI_PATH := libs/hidapi
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$(BUILD_DIR)/hid.o:
@mkdir -p $(BUILD_DIR)
@echo "Compiling hid.o"
@gcc -Wall -g -fpic -c \
-I $(HIDAPI_PATH)/hidapi \
`pkg-config libusb-1.0 --cflags` \
\
$(HIDAPI_PATH)/linux/hid.c \
-o $(BUILD_DIR)/hid.o
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### Source
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# C++ build step
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$(BUILD_DIR)/%.cpp.o: %.cpp
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mkdir -p $(dir $@)
g++ $(CPPFLAGS) $(CXXFLAGS) -c $< -o $@
# Final build step
$(TARGET_EXEC) : $(OBJS)
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g++ $(OBJS) -o $@ $(LDFLAGS)
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# Include generated makefiles
-include $(DEPS)