io.h在Ubuntu 20.04中找不到CLion

Question

我正在尝试运行c ++代码，但是未找到io.h。

'io.h' file not found

它显示为

#include <io.h>

此外，我遇到了一堆奇怪的问题（对于一个已有16年历史的代码）：

 Use of undeclared identifier '_read'

或

Unknown type name '__int64'; did you mean '__int64_t'?

或

Use of undeclared identifier '_O_RDONLY'

或

Use of undeclared identifier '_lseeki64'; did you mean 'fseeko64'?

或

Cannot initialize a parameter of type 'FILE *' (aka '_IO_FILE *') with an lvalue of type 'int'

或

Use of undeclared identifier '_lseek'; did you mean 'fseek'?

或

Use of undeclared identifier '_close'

我想知道是否与io.h相关。

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 20.04.1 LTS
Release:    20.04
Codename:   focal

我有CLion 2020.2.3 和

$ gcc --version
gcc (Ubuntu 9.3.0-10ubuntu2) 9.3.0
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Answer 1

添加编译器指令以管理多操作系统编译。

//old line: #include<io.h>
#ifdef _WIN32
    #include <io.h>
#elif __linux__
    #include <inttypes.h>
    #include <unistd.h>
    #define __int64 int64_t
    #define _close close
    #define _read read
    #define _lseek64 lseek64
    #define _O_RDONLY O_RDONLY
    #define _open open
    #define _lseeki64 lseek64
    #define _lseek lseek
    #define stricmp strcasecmp
#endif
//SAF_Handle.cpp line:458 old line:INFILE = _open(infilename, _O_RDONLY | _O_BINARY);
#ifdef __linux__
  INFILE = _open(infilename, _O_RDONLY);
#elif
  INFILE = _open(infilename, _O_RDONLY | _O_BINARY);
#endif

修复了一些未声明迭代器变量“ i”的循环。