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update makefile

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makefile is now more compiler-agnostic and consistent with how one
expects a makefile to be built.
This commit is contained in:
Quinn
2025-08-11 15:43:36 +02:00
parent 782e78760b
commit 2731f908b3
1 changed files with 20 additions and 60 deletions
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80
makefile
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@@ -1,72 +1,32 @@
# project name = the workspace directory name SHELL = bash -e -o pipefail -O globstar
NAME := $(shell basename $(PWD))
# compiler settings NAME = cpusetcores
CC := clang VERSION = 0.0.2
STD := c17
LANG = c
CFLAGS := -target x86_64-pc-linux-gnu -Wall -Wextra -Wpedantic -Wno-pointer-arith
LDFLAGS := -lc
DEBUG ?= 0 DEBUG ?= 0
CC ?= cc
ifeq ($(DEBUG),1) CFLAGS = -c -std=gnu99 -Wall -Wextra -Wpedantic -MMD -MP
CFLAGS += -DDEBUG -fsanitize=address,undefined -g -Og LFLAGS = -flto
PROF := dbg
else
REL_FLAGS += -O2
PROF := rel
endif
# dirs SRC := $(wildcard src/*.c) $(wildcard src/**/*.c)
DIR_BIN := bin OBJ := $(SRC:%.c=obj/%.o)
DIR_OBJ := obj BIN := bin/$(NAME)
DIR_BUILD := $(DIR_BIN)/$(PROF)
DIR := $(DIR_BIN)/$(PROF) $(DIR_OBJ)/$(PROF)
# source files .PHONY:
SRC := $(wildcard src/*.c) $(wildcard src/**/*.c) $(wildcard src/**/**/*.c) $(wildcard src/**/**/**/*.c) $(wildcard src/**/**/**/**/*.c) compile: $(BIN)
# output locations $(BIN): $(OBJ)
OBJ := $(patsubst src/%,$(DIR_OBJ)/$(PROF)/%,$(SRC:.c=.o)) $(info [CC/LD] $@)
DEP := $(OBJ:.o=.d) @mkdir -p $(@D)
TARGET := $(DIR_BUILD)/$(NAME) @$(CC) -o $@ $^ $(LDFLAGS)
define wr_colour obj/%.o: %.c
@echo -e "\033[$(2)m$(1)\033[0m" $(info [CC] $@)
endef @mkdir -p $(@D)
@$(CC) $(CFLAGS) -o $@ $<
compile: compile_commands.json $(DIR) $(TARGET)
clean: clean:
rm -rf $(DIR_BIN) $(DIR_OBJ) compile_commands.json rm -rv obj/ bin/
# create the binary (linking step)
$(TARGET): $(OBJ)
@$(call wr_colour,"CC: '$(CC)'",94)
@$(call wr_colour,"CFLAGS: '$(CFLAGS)'",94)
@$(call wr_colour,"LDFLAGS: '$(LDFLAGS)'",94)
@$(call wr_colour,"linking to: '$@'",92)
@$(CC) -o $(TARGET) $^ $(CFLAGS) $(LDFLAGS)
@$(call wr_colour,"current profile: '$(PROF)'",93)
# create .o and .d files
$(DIR_OBJ)/$(PROF)/%.o: src/%.c
@$(call wr_colour,"compiling $(notdir $@) from $(notdir $<)",92)
@mkdir -p $(dir $@)
@$(CC) -o $@ -MD -MP -c $< $(CFLAGS) -std=$(STD) -x $(LANG) -Wno-unused-command-line-argument
# create directories
$(DIR):
mkdir -p $@
# update compile commands if the makefile has been updated (for linting)
ifeq ($(DEBUG),1)
compile_commands.json: makefile
$(MAKE) clean
@touch compile_commands.json
bear -- make compile
else
compile_commands.json:
endif
# include the dependencies # include the dependencies
-include $(DEP) -include $(DEP)