Compilation errors with x86intrin.h
Opened this issue · 0 comments
nimble0 commented
System Information
- Ogre Version: v2.2 / v2.3
- Operating System / Platform: Manjaro Linux
- Compiler: g++ (GCC) 14.2.1 20240805
Detailled description
Including x86intrin.h after Math/Array/OgreArrayConfig.h causes compilation errors.
The problem is that fma4intrin.h (included by x86intrin.h) defines _mm_nmsub_ps which gets mangled by:
This commit 359b9a3 seems to reference a similar issue.
Replacing _mm_nmsub_ps with a different identifier fixes the errors. Making sure x86intrin.h is included first also fixes the errors.
Build log
/usr/lib/gcc/x86_64-pc-linux-gnu/14.2.1/include/fma4intrin.h: At global scope:
/home/nimble/projects/ogre-next/OgreMain/include/Math/Array/OgreArrayConfig.h:86:60: error: ‘_mm_mul_ps’ is not a type
86 | #define _mm_nmsub_ps( a, b, c ) _mm_sub_ps( c, _mm_mul_ps( a, b ) )
| ^~~~~~~~~~
In file included from /usr/lib/gcc/x86_64-pc-linux-gnu/14.2.1/include/x86intrin.h:36,
from /home/nimble/projects/ogre-next/Samples/2.0/Tutorials/Tutorial00_Basic/Tutorial00_Basic.cpp:26:
/usr/lib/gcc/x86_64-pc-linux-gnu/14.2.1/include/fma4intrin.h: In function ‘__m128 _mm_sub_ps(__m128, int (*)(__m128, __m128))’:
/usr/lib/gcc/x86_64-pc-linux-gnu/14.2.1/include/fma4intrin.h:117:53: error: ‘__A’ was not declared in this scope; did you mean ‘__C’?
117 | return (__m128) __builtin_ia32_vfmaddps (-(__v4sf)__A, (__v4sf)__B, -(__v4sf)__C);
| ^~~
| __C
/usr/lib/gcc/x86_64-pc-linux-gnu/14.2.1/include/fma4intrin.h:117:66: error: ‘__B’ was not declared in this scope; did you mean ‘__C’?
117 | return (__m128) __builtin_ia32_vfmaddps (-(__v4sf)__A, (__v4sf)__B, -(__v4sf)__C);
| ^~~
| __C