119 lines
3.0 KiB
Makefile
119 lines
3.0 KiB
Makefile
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.DEFAULT_GOAL := all
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# --- Input variables ---
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BUILD ?= release
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ifeq ($(findstring $(BUILD),debug release),)
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$(error BUILD must be set to debug or release)
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endif
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# Build all executables by default.
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APPS ?= well512a
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# If the VERBOSE flag isn't set, then mute superfluous output.
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ifeq ($(VERBOSE),)
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HUSH_COMPILE = @echo "Compiling $<";
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HUSH_LINK = @echo "Linking $@";
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HUSH_GENERATE = @echo "Generating $@";
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HUSH_CLEAN = @
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endif
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# --- Internal variables ---
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ARCH := $(shell uname -p)
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SRC_ROOT := $(abspath ..)
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OUTPUT_DIR := $(SRC_ROOT)/gcc
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INTERMEDIATE_DIR := $(SRC_ROOT)/gcc/obj
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BUILD_DIR := $(INTERMEDIATE_DIR)/$(BUILD)
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ARFLAGS = r
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LDFLAGS =
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# Always enable debug information.
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CFLAGS += -g
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# Flags to generate dependency information.
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CFLAGS += -MD -MP -MT $@
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# Predefined flags.
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ifeq ($(BUILD), debug)
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CFLAGS += -D_DEBUG
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endif
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# Enable compiler optimizations for everything except debug.
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# Note that a very aggresssive optimization level is used and it may not be
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# valid for all standard compliant programs. Reduce this level on individual
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# files or modules as needed.
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ifneq ($(BUILD), debug)
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CFLAGS += -Ofast
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endif
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# Flag to turn on extended instruction sets for the compiler.
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CFLAGS += -msse2
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# Let C++ inherit all C flags.
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CXXFLAGS = $(CFLAGS)
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# --- Internal functions ---
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app_exe = $(OUTPUT_DIR)/$(1)_$(ARCH)_$(BUILD)
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objs_from_src = $(patsubst $(SRC_ROOT)/%, $(BUILD_DIR)/%.o, $(basename $(1)))
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objs_from_src_in = $(call objs_from_src, $(shell find $(1) -name "*.cpp" -o -name "*.c"))
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objs_from_src_in_no_recurse = $(call objs_from_src, $(shell find $(1) -maxdepth 1 -name "*.cpp" -o -name "*.c"))
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# --- well512a application ---
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ifneq ($(filter well512a,$(APPS)),)
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WELL512A_EXE := $(call app_exe,well512a)
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WELL512A_OBJS := $(call objs_from_src_in,$(SRC_ROOT))
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EXES += $(WELL512A_EXE)
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OBJS += $(WELL512A_OBJS)
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$(WELL512A_EXE): $(WELL512A_OBJS) $(LIBS)
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endif
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# --- Build rules ---
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# Dependencies.
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DEPS = $(OBJS:.o=.d)
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-include $(DEPS)
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.PHONY: all clean cleanall help
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all: $(EXES)
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clean:
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@echo "Cleaning..."
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$(HUSH_CLEAN) $(RM) -r $(BUILD_DIR)
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cleanall:
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@echo "Cleaning all..."
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$(HUSH_CLEAN) $(RM) -r $(INTERMEDIATE_DIR)
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help:
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@echo "BUILD = Build mode. One of:"
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@echo " debug (default)"
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@echo " release (optimizations)"
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@echo "APPS = Applications to build. Defaults to all."
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@echo "VERBOSE = Full output from commands if set."
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# It's important that libraries are specified last as Ubuntu uses "ld --as-needed" by default.
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# Only the static libraries referenced by the object files will be linked into the executable.
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# Beware that circular dependencies doesn't work with this flag.
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$(EXES):
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@mkdir -p $(@D)
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$(HUSH_LINK) $(CXX) -o $@ $^ $(LDFLAGS)
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$(BUILD_DIR)/%.a:
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@mkdir -p $(@D)
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$(HUSH_GENERATE) $(AR) $(ARFLAGS) $@ $^
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# $(HUSH_GENERATE) $(AR) $(ARFLAGS) $@ $^ 2> /dev/null
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$(BUILD_DIR)/%.o: $(SRC_ROOT)/%.c
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@mkdir -p $(@D)
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$(HUSH_COMPILE) $(CC) -c $(CFLAGS) -o $@ $<
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$(BUILD_DIR)/%.o: $(SRC_ROOT)/%.cpp
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@mkdir -p $(@D)
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$(HUSH_COMPILE) $(CXX) -c $(CXXFLAGS) -o $@ $<
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