[cleanup] remove unnecessary makefile

# GNU Makefile

# Options

AFL                      = 0

CLANG                    = 0

GCOV                     = 0

NO_POST_REL_CHANGES_TEST = 0

OPTIM                    = 0

# Paths

VPATH  = .

BUILD  = build

CC     = gcc

LINK   = $(CC)

# Binary Name

NAME_LC3   = LC3plus

# Shared Library Name

LIB_LC3    = libLC3plus.so

# Default tool settings

CC        = gcc

RM        = rm -f

# Preprocessor(-I/-D) / Compiler / Linker flags

CFLAGS   += -std=c99 -fPIC                                            \

             -pedantic -Wcast-qual -Wall -W -Wextra -Wno-long-long     \

             -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes  \

             -Werror-implicit-function-declaration

LDFLAGS += -lm -g

# Include dependency flags

DEPFLAGS = -MT $@ -MMD -MP -MF $(BUILD)/$*.Td

ifneq "$(DEBUG)" "0"

    CFLAGS   += -g3

    LDFLAGS  += -g3

endif

ifeq "$(GCOV)" "1"

    CFLAGS  += -fprofile-arcs -ftest-coverage

    LDFLAGS += -fprofile-arcs -ftest-coverage

endif

OPTIM    ?= 0

CFLAGS   += -O$(OPTIM)

CFLAGS   += $(foreach DIR,$(SRC_DIRS),-I$(DIR))

ifeq "$(NO_POST_REL_CHANGES_TEST)" "1"

CFLAGS   += -DNO_POST_REL_CHANGES

endif

# memory sanitizer, find use of uninitialized memory

ifeq "$(CLANG)" "1"

    CC        = clang

    CFLAGS   += -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer

    LDFLAGS  += -fsanitize=memory -fsanitize-memory-track-origins -fno-omit-frame-pointer

    OPTIM     = 2

endif

# address sanitizer, find buffer overflows

ifeq "$(CLANG)" "2"

    CC        = clang

    CFLAGS   += -fsanitize=address -fno-omit-frame-pointer

    LDFLAGS  += -fsanitize=address -fno-omit-frame-pointer

    OPTIM     = 2

endif

# undefined behavior sanitizer, find bugs like integer overflows

ifeq "$(CLANG)" "3"

    CC       = clang

    CFLAGS  += -fsanitize=undefined

    LDFLAGS += -fsanitize=undefined

    OPTIM    = 2

endif

# for code coverate test

ifeq "$(GCOV)" "1"

    CFLAGS  += -fprofile-arcs -ftest-coverage

    LDFLAGS += -fprofile-arcs -ftest-coverage

endif

# verbose output

ifneq "$(VERBOSE)" "1"

    QUIET = @

endif

# dependency magic

CC_FLAGS    = '$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS)'

POSTCOMPILE = mv -f $(BUILD)/$*.Td $(BUILD)/$*.d && touch $@

######## Generate source / object lists ########

SRCS := $(notdir $(foreach DIR, $(VPATH), $(wildcard $(DIR)/*.c)))

SRCS_LIB := $(notdir $(foreach DIR, $(VPATH), $(wildcard $(DIR)/*.c)))

OBJS := $(addprefix $(BUILD)/, $(SRCS:.c=.o))

LIBSRCS := $(filter-out $(DIR)/ccConvert.c $(DIR)/codec_exe.c, $(SRCS))

LIBOBJS := $(addprefix $(BUILD)/, $(LIBSRCS:.c=.o))

.PHONY: all clean help force

.PRECIOUS: $(BUILD)/%.d

all: $(NAME_LC3)

help:

	@echo 'Targets:'

	@echo '    $(NAME_LC3) (default)'

	@echo '    $(LIB_LC3)'

	@echo 'Syntax: make [OPTION=VALUE ...]'

	@echo 'Build options:'

	@echo '    NO_POST_REL_CHANGES_TEST $(NO_POST_REL_CHANGES_TEST) [0,1]'

	@echo '    OPTIM                    $(OPTIM) [0-3]'

	@echo 'Debug options:'

	@echo '    AFL                      $(AFL) [0,1]'

	@echo '    CLANG                    $(CLANG) [0-3]'

	@echo '    GCOV                     $(GCOV) [0,1]'

$(NAME_LC3): $(OBJS)

	@echo 'Linking' $@

	$(QUIET) $(LINK)  $(OBJS) -o $@ $(LDFLAGS)

$(LIB_LC3): $(LIBOBJS)

	@echo 'Linking' $@

	$(QUIET) $(LINK) --shared $(OBJS) -o $@ $(LDFLAGS)

clean:

	$(QUIET) rm -rf $(NAME_LC3) $(LIB_LC3) $(BUILD) ccConvert

$(BUILD)/%.o : %.c $(BUILD)/cc_flags

	@echo 'Compiling' $<

	$(QUIET) $(CC) $(DEPFLAGS) $(CFLAGS) $(CPPFLAGS) -c -o $@ $<

	$(QUIET) $(POSTCOMPILE)

# force rebuild if compilation flags changed

$(BUILD)/cc_flags: force

	$(QUIET) mkdir -p $(BUILD)

	$(QUIET) echo $(CC_FLAGS) | cmp -s - $@ || echo $(CC_FLAGS) > $@

# force rebuild if include dependency changed

$(BUILD)/%.d: ;

include $(wildcard $(patsubst %, $(BUILD)/%.d, $(basename $(SRCS))))