使用Visual Studio中的System（）从Windows中的源c ++文件编译c ++代码

Question

When I use Developer Command Prompt for VS2012 and type

cl myProgram.cpp

It compiles successfully , However, now I want to compile that same file from within my source code in mySourceCode.cpp

using

system("cl myProgram.c");

When I try I get the following error

fatal error c1034: proccess.h: no include path set

I was wondering if there was a way to fix this from within the source code without having to change any environment variables?

My Source code would look something like this: mySourceCode.cpp

#include <iostream>
#include ... 
int main()
{
  //set up code 
  ...

  system("cl myProgram.c");
}

The code I want to compile: myProgram.cpp

#include <proccess.h>
#include <windows.h> 
#include <stdio.h>
int main()
{
  //set up code 
  ...

  Sleep(10000);
}

Answer 1

When I use Developer Command Prompt for VS2012...It compiles successfully

This should be a hint for you. Look what "Command Prompt for VS2012" link is - %comspec% /k ""C:\\Program Files (x86)\\Microsoft Visual Studio 11.0\\VC\\vcvarsall.bat"" amd64 ie it launches vcvarsall.bat file. Now look what that .bat is doing - it uses parameter(s) and other .bat files to set bunch of environment variables needed to successfully perform compilation, such as include path, library path and others.

When you call system most of those environment variables are not set in the process created by system() call. If you want to perform compilation from your program you have many different ways to it. For example, create a .bat file that you will launch, or use CreateProcess function to create a process with appropriate environment