自动化控制

    你不可能空手建起一座城堡。

                                                        --mark

1、注释自动生成文档

./scripts/kernel-doc -v -html *.c > outfile.html

2、linux coding-style

./scripts/Lindent -kr -i8 -ts8 -sob -l80 -ss -bs -psl <file>

3、创建补丁和打补丁

diff -urN ../pre-branch/ . > my-patch

patch -p1 < ../next-brach/my-patch

4、Latex 用于比较正规的文档（框架参考Ones里面）

5、git必须提下！

单机开发模式：

git init
git add .
git branch mark
#切换到mark分支
git checkout mark
git commit -v -a
#合并分支，将mark分支与当前分支合并
git merge mark
# 查看commit详情
git log
git checkout <hash-value>
# 查看所有commit、checkout记录
git reflog
# 回滚某次commit
git reset --hard <hash-value>
#查看当前状态
git status
#保存和恢复进度
git stash
#为某个hash-value(commit)建立一个版本
git tag <label-name> <hash-value>

6、Makefile涉及的东西太多了，不过正则表达式和shell是必须要了解的

范例一：

.PHONY : clean		# use '.PHONY' forbit a file named clean
			# use variable to Increase code maintainability
			# all : first second third
			# $@ = all
			# $^ = first second third
			# $< = first(maybe is %.c, then is all *.c file)
CC = gcc
RM = rm

BIN = simple
SRCS = $(wildcard *.c)
OBJS = $(patsubst %.c, %.o, $(SRCS))

$(BIN) : $(OBJS)
	$(CC) -o $@ $^
%.o : %.c
	$(CC) -o $@ $^ -c
clean :
	$(RM) -rf $(BIN) $(OBJS)

范例二：

.PHONY: all clean touch

ROOT = $(realpath .)

DIRS = $(ROOT)/code/*/src

RM = rm
RMFLAGS = -fr
RMS = $(ROOT)/build/exes $(ROOT)/build/libs

#make有4种赋值方式
#    = : 赋值
#    ?= : 若已赋值则不赋值,否则赋值
#    := : 只展开一次,若要对其重新赋值请用 =
#    += : 追加
#不使用隐式规则将大大提高编译速度,故加入 make -r 选项
all clean:
    @set -e ; \
    for dir in $(DIRS) ; \
    do \
        cd $$dir && $(MAKE) -r ROOT=$(ROOT) $@ ; \
    done

    @set -e ; \
    if [ "$(MAKECMDGOALS)" = "clean" ] ; \
        then $(RM) $(RMFLAGS) $(RMS) ; \
    fi

    @echo
    @echo "^_^ Completed"
    @echo

#如果从另外一台机器拷贝工程过来可能出现这个问题
#找到工程的文件并touch之
touch:
    @find $(ROOT) -exec touch {} \;
    @echo
    @echo "change the time..."

    @echo

范例三：

.PHONY : all clean

MKDIR = mkdir
RM = rm
RMFLAGS = -rf

CC = gcc

DIR_OBJS = objs
DIR_EXES = exes
DIR_DEPS = deps

DIRS = $(DIR_OBJS) $(DIR_DEPS) $(DIR_EXES)
EXE = hello.exe
EXE := $(addprefix $(DIR_EXES)/, $(EXE))

SRCS = $(wildcard *.c)
OBJS = $(patsubst %.c, %.o, $(SRCS))
OBJS := $(addprefix $(DIR_OBJS)/, $(OBJS))
DEPS = $(patsubst %.c, %.dep, $(SRCS))
DEPS := $(addprefix $(DIR_DEPS)/, $(DEPS))

ifeq ("$(wildcard $(DIR_OBJS))", "")
DEP_DIR_OBJS := $(DIR_OBJS)
endif
ifeq ("$(wildcard $(DIR_EXES))", "")
DEP_DIR_EXES:= $(DIR_EXES)
endif
ifeq ("$(wildcard $(DIR_DEPS))", "")
DEP_DIR_DEPS:= $(DIR_DEPS)
endif

all : $(EXE)

ifneq ($(MAKECMDGOALS), clean)
include $(DEPS)
endif

$(DIRS) :
	$(MKDIR) $@
$(EXE) : $(DEP_DIR_EXES) $(OBJS)
	$(CC) -o $@ $(filter %.o, $^)
$(DIR_OBJS)/%.o : $(DEP_DIR_OBJS) %.c
	$(CC) -o $@ -c $(filter %.c, $^)
$(DIR_DEPS)/%.dep : $(DEP_DIR_DEPS) %.c

#set	告诉shell,执行出错退出,加上 ';'表示在一个shell中执行

#sed	语句表示在所有行中替换.o为后缀并且后面跟着' '或':'的单词
#	加入前缀'obj/'
#\(\)	保存匹配的字符，如s/\(love\)able/\1rs，loveable被替换成lovers
	@echo "Creating $@ ..."
	@set -e; \
	$(RM) $(RMFLAGS) $@.tmp; \
	$(CC) -E -MM $(filter %.c, $^) > $@.tmp; \
	sed 's,\(.*\)\.o[ :]*,objs/\1.o $@: ,g' < $@.tmp > $@; \
	$(RM) $(RMFLAGS) $@.tmp

clean :
	$(RM) $(RMFLAGS) $(DIRS)

find . -type f -name "*.mk" -printf "\n# ===========================================\n" -print -printf "# ===========================================\n\n" -exec cat {} \; > all_android_mk_file.txt