[cfe-users] LLVM : Clang : 3.8.0 (trunk) : Windows 7 64-bit : libc++ missing?

[Mayuresh Kathe]

Hi,

I have to run Windows 7 Professional 64-bit (due unforeseen 
circumstances) instead of my preferred OS, i.e. FreeBSD.


I just downloaded the Clang toolkit environment installer 
(LLVM-3.8.0-r243265-win64) for Windows (from 
http://www.llvm.org/builds/) and post finishing the install found that 
clang++.exe refuses to compile even a simple C++ program (below);


int main(int argc, char* argv[]) {
return 0;
}

The error messages thrown out were (below);

clang++.exe: error: unable to execute command: program not executable
clang++.exe: error: linker command failed with exit code 1 (use -v to 
see invocation)


Before this, I tried compiling a more fleshed out program with 
includes and namespaces and cout, etc., but then clang++.exe told 
me about absence of iostream.


Isn't iostream a part of libc++?
If yes, is there any pre-built libc++ installable for Windows?
If not, is there any documentation which shows how to get it compiled 
under Windows?


Thanks,

~Mayuresh

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Re: [cfe-users] LLVM : Clang : 3.8.0 (trunk) : Windows 7 64-bit : libc++ missing?

[Mayuresh Kathe]

On 2015-08-03 01:27 PM, Jeffrey Walton wrote:
If not, is there any documentation which shows how to get it 
compiled

under
Windows?

Yeah, you need to download and build libcxx in addition to LLVM, 
Clang

(CFE), and Tools.

You can find libcxx at http://libcxx.llvm.org/.

Also, the Autotools/Make based stuff does not work because it does 
not
detect the presence of libcxx in-tree (or is it out-of-tree?). Use 
the

Cmake gear instead.

Ditto for LLDB if you choose to build it, too.



Thanks for the response.

Is there any documentation anywhere which would show me how to build 
libc++?


Also, what should I have installed on my system other than Clang/LLVM 
to be
able to build libc++ itself? Haven't found any traces of Cmake on my 
Windows

7 install.


Oh, sorry about that... my bad... I did not tune into the Windows part.

I've been working with Cygwin and MinGW recently, and made the leap
that you were doing Linux on Windows. I did not realize it was real
Windows on Windows. (after a few days with Cygwin and MinGW, I really
miss plain old Windows).


No worries, happens to the best of us. :)

If you know of any ways to get me started off in the right direction, 
please do share.

BTW, I checked out Cmake; nice tool, thanks for that tip.

~Mayuresh

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