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C编程⼯具测试
hello
过程
➜ p2 git:(master) ✗ gcc -E hello.c -o hello.i
➜ p2 git:(master) ✗ gcc -S hello.i -o hello.s
➜ p2 git:(master) ✗ gcc -c hello.s -o hello.o
➜ p2 git:(master) ✗ gcc hello.o -o hello
➜ p2 git:(master) ✗ ls
a.out hello hello.c hello.i hello.o hello.s
➜ p2 git:(master) ✗ ./hello
hello 20221415
大小端代码测试
编译运行
all:
gcc cebitfields.c -o cebitfields
gcc cebitwise.c -o cebitwise
gcc celibrary.c -o celibrary
gcc cepointer.c -o cepointer
gcc ceunion.c -o ceunion
➜ big-little-endian git:(master) ✗ make
gcc cebitfields.c -o cebitfields
gcc cebitwise.c -o cebitwise
gcc celibrary.c -o celibrary
gcc cepointer.c -o cepointer
gcc ceunion.c -o ceunion
➜ big-little-endian git:(master) ✗ ls
cebitfields cebitwise celibrary cepointer ceunion Makefile
cebitfields.c cebitwise.c celibrary.c cepointer.c ceunion.c
➜ big-little-endian git:(master) ✗ ./cebitfields
Little Endian (Bit-field Method)
➜ big-little-endian git:(master) ✗ ./cebitwise
Little Endian (Bitwise Method)
➜ big-little-endian git:(master) ✗ ./celibrary
Little Endian (Standard Library Method)
➜ big-little-endian git:(master) ✗ ./cepointer
Little Endian (Pointer Method)
➜ big-little-endian git:(master) ✗ ./ceunion
Little Endian (Union Method)
命令行
编写main.c ble.h Makefile
main.c
#include “ble.h”
#include<string.h>
#include <stdlib.h>
int main(int argc, char* argv[]){
if(argc == 1){
printf(“use -i to chose method\n”);
printf(“1 -> fields\n2 -> wise\n3 -> library\n4 -> pointer\n5 -> union\n”);
return 0;
}
int choice = 0;
for(int i = 1; i < argc; i++){
if(strcmp(argv[i], “-i”) == 0){
if(i + 1 >= argc){
printf(“Parameters are missing\n”);
return 0;
}
choice = atoi(argv[i + 1]);
break;
}
}
switch (choice) {
case 1:
check_endian_bit_field();
break;
case 2:
check_endian_bitwise();
break;
case 3:
check_endian_standard();
break;
case 4:
check_endian_pointer();
break;
case 5:
check_endian_union();
break;
default:
printf(“Wrong Parameters\n”);
}
return 0;
}
ble.h
#ifndef CC_BLE_H
#define CC_BLE_H
#include<stdio.h>
void check_endian_bit_field();
void check_endian_bitwise();
void check_endian_standard();
void check_endian_pointer();
void check_endian_union();
#endif //CC_BLE_H
Makefile
main: cebitfields.o cebitwise.o celibrary.o cepointer.o ceunion.o main.o
gcc -o main *.o

cebitfields.o: cebitfields.c ble.h
gcc -c cebitfields.c

cebitwise.o: cebitwise.c ble.h
gcc -c cebitwise.c

celibrary.o: celibrary.c ble.h
gcc -c celibrary.c

cepointer.o: cepointer.c ble.h
gcc -c cepointer.c

ceunion.o: ceunion.c ble.h
gcc -c ceunion.c

main.: main.c ble.h
gcc -c main.c

clean:
rm -f *.o
编译运行
➜ p3 git:(master) ✗ make && make clean
gcc -c cebitfields.c
gcc -c cebitwise.c
gcc -c celibrary.c
gcc -c cepointer.c
gcc -c ceunion.c
cc -c -o main.o main.c
gcc -o main *.o
rm -f *.o
➜ p3 git:(master) ✗ ./main
use -i to chose method
1 -> fields
2 -> wise
3 -> library
4 -> pointer
5 -> union
➜ p3 git:(master) ✗ ./main -i 1
Little Endian (Bit-field Method)
➜ p3 git:(master) ✗ ./main -i 2
Little Endian (Bitwise Method)
➜ p3 git:(master) ✗ ./main -i 3
Little Endian (Standard Library Method)
➜ p3 git:(master) ✗ ./main -i 4
Little Endian (Pointer Method)
➜ p3 git:(master) ✗ ./main -i 5
Little Endian (Union Method)
➜ p3 git:(master) ✗ ./main -i
Parameters are missing
➜ p3 git:(master) ✗ ./main -i 10
Wrong Parameters
静态库
制作静态库
Makefile

libble.a: cebitfields.o cebitwise.o celibrary.o cepointer.o ceunion.o
ar rcs libble.a *.o

cebitfields.o: cebitfields.c ble.h
gcc -c cebitfields.c

cebitwise.o: cebitwise.c ble.h
gcc -c cebitwise.c

celibrary.o: celibrary.c ble.h
gcc -c celibrary.c

cepointer.o: cepointer.c ble.h
gcc -c cepointer.c

ceunion.o: ceunion.c ble.h
gcc -c ceunion.c

clean:
rm -f *.o
➜ p3-1 git:(master) ✗ make && make clean
gcc -c cebitfields.c
gcc -c cebitwise.c
gcc -c celibrary.c
gcc -c cepointer.c
gcc -c ceunion.c
ar rcs libble.a *.o
rm -f *.o
➜ p3-1 git:(master) ✗ ls
ble.h cebitfields.c cebitwise.c celibrary.c cepointer.c ceunion.c libble.a main main.c Makefile
链接静态库
➜ p3-1 git:(master) ✗ rm main
➜ p3-1 git:(master) ✗ sudo cp libble.a /usr/lib/
➜ p3-1 git:(master) ✗ gcc -o main main.c -lble
测试运行
➜ p3-1 git:(master) ✗ ls
ble.h cebitfields.c cebitwise.c celibrary.c cepointer.c ceunion.c libble.a main main.c Makefile
➜ p3-1 git:(master) ✗ ./main -i 1
Little Endian (Bit-field Method)
➜ p3-1 git:(master) ✗ ./main -i 2
Little Endian (Bitwise Method)
➜ p3-1 git:(master) ✗ ./main -i 3
Little Endian (Standard Library Method)
➜ p3-1 git:(master) ✗ ./main -i 4
Little Endian (Pointer Method)
➜ p3-1 git:(master) ✗ ./main -i 5
Little Endian (Union Method)
➜ p3-1 git:(master) ✗ ./main -i
Parameters are missing
➜ p3-1 git:(master) ✗ ./main -i 10
Wrong Parameters
➜ p3-1 git:(master) ✗ ./main
use -i to chose method
1 -> fields
2 -> wise
3 -> library
4 -> pointer
5 -> union
动态库
制作动态库
Makefile

libble.so: cebitfields.o cebitwise.o celibrary.o cepointer.o ceunion.o
gcc -shared *.o -o libble.so

cebitfields.o: cebitfields.c ble.h
gcc -c cebitfields.c -fpic

cebitwise.o: cebitwise.c ble.h
gcc -c cebitwise.c -fpic

celibrary.o: celibrary.c ble.h
gcc -c celibrary.c -fpic

cepointer.o: cepointer.c ble.h
gcc -c cepointer.c -fpic

ceunion.o: ceunion.c ble.h
gcc -c ceunion.c -fpic

clean:
rm -f *.o
➜ p3-2 git:(master) ✗ make && make clean
gcc -c cebitfields.c -fpic
gcc -c cebitwise.c -fpic
gcc -c celibrary.c -fpic
gcc -c cepointer.c -fpic
gcc -c ceunion.c -fpic
gcc -shared *.o -o libble.so
rm -f *.o
链接动态库
➜ p3-2 git:(master) ✗ gcc -o main main.c -L ./home/zhanhe/cc/2024-10-08/p3-2 -lble
编译运行
➜ p3-2 git:(master) ✗ ./main
use -i to chose method
1 -> fields
2 -> wise
3 -> library
4 -> pointer
5 -> union
➜ p3-2 git:(master) ✗ ./main -i 10
Wrong Parameters
➜ p3-2 git:(master) ✗ ./main -i
Parameters are missing
➜ p3-2 git:(master) ✗ ./main -i 1
Little Endian (Bit-field Method)
➜ p3-2 git:(master) ✗ ./main -i 2
Little Endian (Bitwise Method)
➜ p3-2 git:(master) ✗ ./main -i 3
Little Endian (Standard Library Method)
➜ p3-2 git:(master) ✗ ./main -i 4
Little Endian (Pointer Method)
➜ p3-2 git:(master) ✗ ./main -i 5
Little Endian (Union Method)
项目结构
组织项目结构
➜ p3-3 git:(master) ✗ tree
.
├── bin
├── docs
├── include
│ └── ble.h
├── lib
├── Makefile
└── src
├── cebitfields.c
├── cebitwise.c
├── celibrary.c
├── cepointer.c
├── ceunion.c
└── main.c

6 directories, 8 files
编写Makefile
target = ./bin/main
src = $(wildcard ./src/*.c)
obj = $(patsubst %.c,%.o, $(src))
include = ./include

$(target): $(obj)
gcc $^ -o $@

%.o:%.c
gcc $< -c -I $(include) -o $@

clean:
rm -f $(obj)
编译运行
➜ p3-3 git:(master) ✗ make && make clean
gcc src/cebitfields.c -c -I ./include -o src/cebitfields.o
gcc src/cebitwise.c -c -I ./include -o src/cebitwise.o
gcc src/celibrary.c -c -I ./include -o src/celibrary.o
gcc src/cepointer.c -c -I ./include -o src/cepointer.o
gcc src/ceunion.c -c -I ./include -o src/ceunion.o
gcc src/main.c -c -I ./include -o src/main.o
gcc src/cebitfields.o src/cebitwise.o src/celibrary.o src/cepointer.o src/ceunion.o src/main.o -o bin/main
rm -f ./src/cebitfields.o ./src/cebitwise.o ./src/celibrary.o ./src/cepointer.o ./src/ceunion.o ./src/main.o
➜ p3-3 git:(master) ✗ tree
.
├── bin
│ └── main
├── docs
├── include
│ └── ble.h
├── lib
├── Makefile
└── src
├── cebitfields.c
├── cebitwise.c
├── celibrary.c
├── cepointer.c
├── ceunion.c
└── main.c

6 directories, 9 files
➜ p3-3 git:(master) ✗ ./bin/main
use -i to chose method
1 -> fields
2 -> wise
3 -> library
4 -> pointer
5 -> union
➜ p3-3 git:(master) ✗ ./bin/main -i 1
Little Endian (Bit-field Method)
➜ p3-3 git:(master) ✗ ./bin/main -i 2
Little Endian (Bitwise Method)
➜ p3-3 git:(master) ✗ ./bin/main -i 3
Little Endian (Standard Library Method)
➜ p3-3 git:(master) ✗ ./bin/main -i 4
Little Endian (Pointer Method)
➜ p3-3 git:(master) ✗ ./bin/main -i 5
Little Endian (Union Method)
➜ p3-3 git:(master) ✗ ./bin/main -i
Parameters are missing
➜ p3-3 git:(master) ✗ ./bin/main -i 10
Wrong Parameters