C++基础之C++编译调试

                     1 #include<iostream>
 2usingnamespace std;
 3int main()
 4{
 5  cout<<"hello world!"<<endl;
 6return0;
 7}

                    [zsj@localhost aa]$ ldd test
        linux-vdso.so.1 =>  (0x00007ffff64ac000)
        libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x0000003a67000000)
        libm.so.6 => /lib64/libm.so.6 (0x0000003a5b000000)
        libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x0000003a66000000)
        libc.so.6 => /lib64/libc.so.6 (0x0000003a5a400000)
        /lib64/ld-linux-x86-64.so.2 (0x0000003a59c00000)

 gcc/g++ 在执行编译时，需要4步

1 预处理,生成.i的文件[使用-E参数]

2 将预处理后的文件不转换成汇编语言,生成文件.s[使用-S参数]

[zsj@localhost aa]$ g++ -E test.cpp >> test.i
[zsj@localhost aa]$ g++ -S test.i >> test.s
[zsj@localhost aa]$ g++ -c test.s >>test.o
[zsj@localhost aa]$ g++ test.o -o test
[zsj@localhost aa]$ ls
test  test.cpp  test.i  test.o  test.s
[zsj@localhost aa]$ ./test
hello world!

[zsj@localhost aa]$ gcc test.cpp -o test
/tmp/cceNJsOV.o: In function `main‘:
test.cpp:(.text+0xa): undefined reference to `std::cout‘
test.cpp:(.text+0xf): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, charconst*)‘
test.cpp:(.text+0x14): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)‘
test.cpp:(.text+0x1c): undefined reference to `std::basic_ostream<char, std::char_traits<char> >::operator<<(std::basic_ostream<char, std::char_traits<char> >& (*)(std::basic_ostream<char, std::char_traits<char> >&))‘
/tmp/cceNJsOV.o: In function `__static_initialization_and_destruction_0(int, int)‘:
test.cpp:(.text+0x4a): undefined reference to `std::ios_base::Init::Init()‘
test.cpp:(.text+0x4f): undefined reference to `std::ios_base::Init::~Init()‘
/tmp/cceNJsOV.o:(.eh_frame+0x12): undefined reference to `__gxx_personality_v0‘
collect2: ld 返回 1
 
[zsj@localhost aa]$ gcc -lstdc++ test.cpp -o test
[zsj@localhost aa]$ ./test
hello world!