ToastconcernandClaude Opus 5.5 9b28f864d3 ci: fix the Windows and Linux x86 builds ...

Every Windows job and Linux x86 were failing; reproduced each locally (MSVC 18
x64/x86, gcc -m32) and fixed:

- studio.cpp: thumbnail buffers were named `small`, which Windows' rpcndr.h
  #defines to `char`, so MSVC saw `std::vector<u8> char(...)`. Renamed to
  `scaled`. (All three Windows builds.)
- 32-bit x86: astcenc's SSE4.1 code calls __builtin_popcountll on 32-bit
  MSVC, which doesn't exist; 32-bit builds now use astcenc's plain backend.
- opus defaulted to the DLL C runtime while the app links the static one;
  x86 MSVC can't link that mix (__except_handler4_common). OPUS_STATIC_RUNTIME.
- 32-bit gcc/clang: turn on SSE2 (-msse2 -mfpmath=sse) as MSVC does; rtm
  (under ACL) uses SSE intrinsics on any x86.
- CI Linux x86: install the i386 X11 dev packages; GLFW couldn't find a
  32-bit libX11 to link.

The x86 and x64 Windows builds pass the same --selftest checks (97/104; the
7 failures are pre-existing and identical on both).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-22 10:56:57 -05:00

..

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ci: fix the Windows and Linux x86 builds

2026-10-22 10:56:57 -05:00