165 lines
4.5 KiB
Makefile
165 lines
4.5 KiB
Makefile
# --- minimal linux makefile ------------------------------------------------- #
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# This makefile works on linux with options to crosscompile by changing the #
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# TARGET option. By default, compile the defined application for the native #
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# platform. #
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# #
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# Before use, make sure to adapt the parameters in the following sections #
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# - project architecture : general folder layout #
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# - toolchain configuration : compiler to use and other little things #
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# - defines settings : list of defines to pass to the compiler #
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# - general settings : include control and release options #
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# ---------------------------------------------------------------------------- #
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# --- project architecture
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# program name
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EXE_PREFIX=main
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# project folder architecture
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SRC=src
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BIN=bin
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INC=
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OBJ=$(BIN)/obj
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# --- toolchain configuration
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TARGET=
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CC=$(TARGET)gcc
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AS=$(TARGET)gcc -x assembler-with-cpp -c
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# --- defines settings
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#list all C defines here with -D before the name
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C_DEFS=
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#list all ASM defines here with -D before the name
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A_DEFS=
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#list all linker flags here with -l before the name
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LDFLAGS=
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# --- general settings
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# RELEASE=0 -> disable optimisation, then enable debug
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# RELEASE=1 -> enable optimisation, then disable debug
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RELEASE=0
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#-------------------------------------------------------------------------------
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# files discovery and paths solving
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# down here is black magic, you probably don't want to modify anything
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#list all directories, sort them and remove duplicates
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DIRS:=$(sort $(shell find . -type d))
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#find paths to src files from directory list
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SRC_PATHS=$(foreach DIR, $(SRC), $(filter ./$(DIR)%, $(DIRS)))
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#list c files
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C_FILES=$(foreach PATH, . $(SRC_PATHS), $(wildcard $(PATH)/*.c))
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#filter useless STmcube files
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ifeq ($(strip $(FILTER)), 1)
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C_FILES:=$(filter-out %template.c, $(C_FILES))
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endif
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#list h files
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#H_FILES=$(foreach PATH, $(INC_PATHS), $(wildcard $(PATH)/*.h))
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#list asm files
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ASM_FILES=$(foreach PATH, . $(SRC_PATHS), $(wildcard $(PATH)/*.s))
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#separate main c file from other c files
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MAIN_C_FILES:=$(filter %$(EXE_PREFIX).c, $(C_FILES))
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C_FILES:=$(filter-out %$(EXE_PREFIX).c, $(C_FILES))
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#create new paths to store o files
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MAIN_OBJ_FILES=$(patsubst ./%.c, ./$(OBJ)/%.o, $(MAIN_C_FILES))
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OBJ_FILES=$(patsubst ./%.c, ./$(OBJ)/%.o, $(C_FILES)) \
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$(patsubst ./%.s, ./$(OBJ)/%.o, $(ASM_FILES))
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DEPEND_FILES=$(MAIN_OBJ_FILES:%.o,%.d)$(OBJ_FILES:%.o,%.d)
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#-------------------------------------------------------------------------------
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# makefile incantation
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# --- include path flag management
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ifneq ($(strip $(INC)),)
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INCLUDE=-I$(INC)
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else
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INCLUDE=
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endif
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# --- release flag management
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ifeq ($(strip $(RELEASE)), 0)
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CFLAGS=-g3 -Os
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LDFLAGS=-g3 -Os
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else
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CFLAGS=-O2
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endif
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# --- flags definition
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#merge all c compiler options
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CFLAGS+=$(CPUFLAGS) -std=c23 -Wall -Wextra -Warray-bounds \
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-Wno-unused-parameter -fomit-frame-pointer $(C_DEFS)
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#merge all asm compiler options
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ASFLAG=-Wa,--gdwarf2 -D__ASSEMBLY__ $(C_DEFS) $(A_DEFS)
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#merge all linker options
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LDFLAGS+=-lc -lgcc -lgcov -lm -Wl,-Map=$@.map,--gc-sections
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# --- folder creation
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DIR_GUARD=@mkdir -p $(@D)
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#-------------------------------------------------------------------------------
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# makefile rules
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# --- main rule
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all: $(BIN)/$(EXE_PREFIX)
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# --- rules configuration
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rebuild : clean all
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.SUFFIXES:
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.SECONDARY:
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#define rules name
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.PHONY: all clean rebuild
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# --- secondary rules
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#exec file compilation
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$(BIN)/$(EXE_PREFIX) : $(MAIN_OBJ_FILES) $(OBJ_FILES)
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@echo
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@printf '\e[1;32m==== linking $@ ====\e[0m'
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@echo
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$(DIR_GUARD)
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$(CC) $(LIBRARIES) $(LDFLAGS) $(CFLAGS) -o $@ $^
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@$(SKIP_LINE)
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#c files compilation
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$(OBJ)/%.o : %.c
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@echo
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@printf '\e[1;34m==== compiling [opt=$(opt)] $< ====\e[0m'
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@echo
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$(DIR_GUARD)
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$(CC) $(INCLUDE) -c $(CFLAGS) $< -o $@ $(LIBRARIES)
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@$(SKIP_LINE)
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$(BIN)/%.o : %.c
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@echo
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@printf '\e[1;34m==== compiling [opt=$(opt)] $< ====\e[0m'
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@echo
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$(DIR_GUARD)
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$(CC) $(INCLUDE) -c $(CFLAGS) $< -o $@ $(LIBRARIES)
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@$(SKIP_LINE)
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#asm files compilation
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$(OBJ)/%.o : %.s
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@echo
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@printf '\e[1;35m==== compiling [opt=$(opt)] $^ $@ $(LIBRARIES)====\e[0m'
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@echo
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$(DIR_GUARD)
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$(AS) $(ASFLAGS) $< -o $@ $(LIBRARIES)
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@$(SKIP_LINE)
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$(BIN)/%.o : %.s
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@echo
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@printf '\e[1;35m==== compiling [opt=$(opt)] $^ $@ $(LIBRARIES)====\e[0m'
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@echo
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$(DIR_GUARD)
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$(AS) $(ASFLAGS) $< -o $@ $(LIBRARIES)
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@$(SKIP_LINE)
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# --- remove generated files
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clean:
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-rm -rf $(BIN)/*
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-include $(DEPEND_FILES)
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