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Bug 2903 - SDL2 include fails with Clang (llvm) 3.6
Summary: SDL2 include fails with Clang (llvm) 3.6
Status: ASSIGNED
Alias: None
Product: SDL
Classification: Unclassified
Component: *don't know* (show other bugs)
Version: 2.0.5
Hardware: x86 Windows (XP)
: P2 major
Assignee: Sam Lantinga
QA Contact: Sam Lantinga
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-03-11 08:24 UTC by mattreecebentley
Modified: 2017-08-13 03:33 UTC (History)
1 user (show)

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Description mattreecebentley 2015-03-11 08:24:40 UTC 
Set up clang with codelite according to instructions here:
http://codelite.org/LiteEditor/ClangCompiler
(copy clang.exe and clang.exe to mingw bin folder).

Compilation works fine without SDL2 header included, with it included get 19 errors and 180 warnings, all based around SDL_cpuinfo.h.

Warnings are of the form:

e:/programming/mingw/lib/gcc/mingw32/4.8.1/include\mmintrin.h:45:72: warning: unknown attribute '__artificial__' ignored [-Wunknown-attributes]
extern __inline void __attribute__((__gnu_inline__, __always_inline__, __artificial__))


Errors are of the form:

e:/programming/mingw/lib/gcc/mingw32/4.8.1/include\xmmintrin.h:113:19: error: use of undeclared identifier '__builtin_ia32_mulss'
return (__m128) __builtin_ia32_mulss ((__v4sf)__A, (__v4sf)__B);
Comment 1 mattreecebentley 2015-03-12 03:51:36 UTC 
Have now tested with a local build of latest mercurial, no change.
Comment 2 dmikos 2017-02-20 10:53:20 UTC 
HI

i am use clang in visual studio 2015 and trying to compile SDL.

Some errors:
"
1>C:\Dev\waytrel2\src\3rdparty\sdl\src\video\SDL_fillrect.c(103,5): error : member reference base type '__m128' (vector of 4 'float' values) is not a structure or union
1>      SSE_BEGIN;
1>      ^~~~~~~~~
1>  C:\Dev\waytrel2\src\3rdparty\sdl\src\video\SDL_fillrect.c(33,9):  note: expanded from macro 'SSE_BEGIN'
"

this can be fixed by 
"#if defined(_MSC_VER) && !defined(__clang__)" in "src\video\SDL_fillrect.c".


Some warnings:
warning : '__SSE__' macro redefined [-Wmacro-redefined]
and warnings related to _ReadWriteBarrier.