Error building 2.06 x64 on Linux

[yochananmarqos]

Manjaro Linux

gcc 8.1.1+20180531-1

scons 3.0.1-1

m4 1.4.18-1

subversion 1.10.0-2

mesa 18.1.1-1

libxxf86vm 1.1.4-2

openal 1.18.2-2

libxext 1.3.3-2

 

scons BUILD="release" TARGET_ARCH="x64":

idlib/math/Simd_SSE2.cpp: In member function ‘virtual void idSIMD_SSE2::NormalizeTangents(idDrawVert*, int)’:
idlib/math/Simd_SSE2.cpp:897:70: error: non-constant condition for static assertion
   static_assert(OFFSETOF(idDrawVert, normal) + sizeof(vertex.normal) == OFFSETOF(idDrawVert, tangents), "Bad members offsets");
                                                                      ^
idlib/math/Simd_SSE2.cpp:897:70: error: dereferencing a null pointer in ‘*0’
idlib/math/Simd_SSE2.cpp:897:70: error: dereferencing a null pointer in ‘*0’
idlib/math/Simd_SSE2.cpp:897:70: error: ‘((((long unsigned int)((int)((uintptr_t)(&0->idDrawVert::normal)))) + 12) == ((long unsigned int)((int)((uintptr_t)(&0->idDrawVert::tangents)))))’ is not a constant expression
idlib/math/Simd_SSE2.cpp: In member function ‘virtual void idSIMD_SSE2::DeriveTangents(idPlane*, idDrawVert*, int, const int*, int)’:
idlib/math/Simd_SSE2.cpp:1010:69: error: non-constant condition for static assertion
  static_assert(OFFSETOF(idDrawVert, normal) + sizeof(verts->normal) == OFFSETOF(idDrawVert, tangents), "Bad members offsets");
                                                                     ^
idlib/math/Simd_SSE2.cpp:1010:69: error: dereferencing a null pointer in ‘*0’
idlib/math/Simd_SSE2.cpp:1010:69: error: dereferencing a null pointer in ‘*0’
idlib/math/Simd_SSE2.cpp:1010:69: error: ‘((((long unsigned int)((int)((uintptr_t)(&0->idDrawVert::normal)))) + 12) == ((long unsigned int)((int)((uintptr_t)(&0->idDrawVert::tangents)))))’ is not a constant expression
scons: *** [build/scons_x64/release/core/idlib/math/Simd_SSE2.o] Error 1
scons: building terminated because of errors.
==> ERROR: A failure occurred in package().
    Aborting...

 

[stgatilov]

Any suggestion about how to get offset of a member in a struct in bytes, so that it is compile-time constant?

[duzenko]

Any suggestion about how to get offset of a member in a struct in bytes, so that it is compile-time constant?

Why is the asm code being compiled in x64 at all?

Don't we use generic math there?

[stgatilov]

Why is the asm code being compiled in x64 at all?

Don't we use generic math there?

It is not asm, it is my code with SSE instrinsics.

 

It seems that offsetof should solve the problem.

[stgatilov]

Fixed in svn rev 7478.

 

Of course, you can simply comment the problematic static_assert-s as a workaround.