[cfe-dev] How to compile using Clang?

[Csaba Raduly]

Hi Michael,

On Thu, May 3, 2012 at 10:04 AM, Michal Stefanow wrote:
> I'm having a problem with compiling. I've never used clang and I'm not sure
> how set up environment etc...
(snip)
> Trying to make:
> make
> Making all in backend
(snip libtool invoking clang)
> In file included from deps/http-parser/http_parser.c:21:
> deps/http-parser/http_parser.h:28:10: fatal error: 'sys/types.h' file not
> found
> #include <sys/types.h>
>          ^
> 1 error generated.
> make[1]: *** [libfiresheep_la-http_parser.lo] Error 1
> make: *** [all-recursive] Error 1
>
> ***
>
> cat /usr/include/sys/types.h - http://pastebin.com/ke59jmfq
>
> ***
>
> clang --version
> Apple clang version 3.1 (tags/Apple/clang-318.0.58) (based on LLVM 3.1svn)
> Target: x86_64-apple-darwin11.3.0
> Thread model: posix
>
> ***
>
> I have never been proficient in solving includes and compiling dependecies,
> simple Google search search in this case neither... Probably this a matter
> of setting one flag or another. Any hints?

First, run

make CXXFLAGS=-v

This will pass the -v flag to clang, causing it to print the
directories where headers are searched, among other things. Perhaps
this will help understand why the compiler doesn't find sys/types.h (I
suspect this option:  -isysroot /Developer/SDKs/MacOSX10.6.sdk).

Csaba
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