linux编译多个文件夹

project/
├── src/
│   ├── main.c
│   └── utils.c
├── include/
│   └── utils.h
├── lib/
│   └── libfoo/
│       ├── foo.c
│       └── foo.h
└── Makefile

CC = gcc
CFLAGS = -Iinclude -Llib/libfoo
LIBS = -lfoo

SRC_DIR = src
LIB_DIR = lib/libfoo
OBJ_DIR = obj

SRC = $(wildcard $(SRC_DIR)/*.c)
LIB_SRC = $(wildcard $(LIB_DIR)/*.c)
OBJ = $(patsubst $(SRC_DIR)/%.c, $(OBJ_DIR)/%.o, $(SRC)) $(patsubst $(LIB_DIR)/%.c, $(OBJ_DIR)/%.o, $(LIB_SRC))

all: $(OBJ)
    $(CC) $(CFLAGS) -o project $(OBJ) $(LIBS)

$(OBJ_DIR)/%.o: $(SRC_DIR)/%.c | $(OBJ_DIR)
    $(CC) $(CFLAGS) -c $< -o $@

$(OBJ_DIR)/%.o: $(LIB_DIR)/%.c | $(OBJ_DIR)
    $(CC) $(CFLAGS) -c $< -o $@

$(OBJ_DIR):
    mkdir -p $(OBJ_DIR)

clean:
    rm -rf $(OBJ_DIR) project

cmake_minimum_required(VERSION 3.10)
project(Project)

set(CMAKE_C_STANDARD 11)

include_directories(include)
add_library(foo STATIC lib/libfoo/foo.c)

add_executable(project src/main.c src/utils.c)
target_link_libraries(project foo)

mkdir build
cd build
cmake ..
make