[LLVMdev] How to compile a simple C program with clang on Windows 8.1?

[Unga]

Hi all

I need a small help to get my first C program to compile on Widows 8.1. I'm an Unix guy but new to Windows.

I installed MS Visual Studio 2013 free version and the LLVM 3.6.0 binary pre-built version.

Here is my sample C program:

#include <stdio.h>
int main() {
  printf("hello world\n");
  return 0;
}

1.

>clang test1.c -o test1.exe
test1.c:2:10: fatal error: 'stdio.h' file not found
#include <stdio.h>

2.

>clang test1.c -I"c:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\include" -o test1.exe
In file included from test1.c:2:
In file included from c:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\include\stdio.h:20:
In file included from c:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\include\crtdefs.h:74:
c:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\include\vadefs.h:50:9: error:
      unknown type name '__w64'
typedef _W64 unsigned int   uintptr_t;

My questions:

a) Am I referring to the correct C header files folder?

b) Do I have to include a Windows specific include file where __w64 is defined?

Many thanks in advance.

Best regards

Unga

[Richard Pennington]

On 04/26/2015 02:50 AM, Unga wrote:
> Hi all
>
> I need a small help to get my first C program to compile on Widows
> 8.1. I'm an Unix guy but new to Windows.

[snip]

Hi Unga,

I can't help you with Visual Studio since I've never used it, but I
would like to suggest that you try out ELLCC. ELLCC is a tool chain
based on clang/LLVM that can target Windows as well as several Linux
based systems. The binary downloads have all the stuff you need to
build: C/C++ compiler, linker, debugger, and pre-built libraries.

Here's an example of "hello world" under Windows 8.1:
http://ellcc.org/blog/?p=23650

Follow the links to the download page to get to the binary downloads.
You can also get the full source and build it yourself if you're so
inclined.

-Rich

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[Kuperstein, Michael M]

Hi Unga,

 

Try clang-cl instead of clang.

It’s a version of the clang driver that should set the environment up correctly (in terms of defines, include paths, etc.).

 

Michael

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[Unga]

This problem was solved after I compile and install LLVM and Clang from source.

Thanks for replies.

Unga

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