iamdoubz
d89b99db6c
cmake-rs hardcodes opt_level(0) and replaces CMake's Release C flags, so ggml/whisper.cpp compiled at /Od — root cause of the W1 CPU-pathology (RTF ~20) in docs/benchmarks/2026-07-parakeet-vs-whisper.md. cc-rs appends env CFLAGS/CXXFLAGS last, restoring optimization for all native deps.
11 lines
587 B
TOML
11 lines
587 B
TOML
# Fix: whisper.cpp (whisper-rs-sys) is configured by the cmake crate, which
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# hardcodes opt_level(0) and overwrites CMake's default MSVC Release flags
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# (/O2 /Ob2 /DNDEBUG) with unoptimized ones — ggml's CPU kernels were compiled
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# at /Od with asserts on, making CPU-only transcription ~40x slower than real
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# time (bench finding W1, docs/benchmarks/2026-07-parakeet-vs-whisper.md).
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# cc-rs appends these env flags after its own, so they win for every native
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# dep. MSVC-only flags are fine: WhispAssist is a Windows-native app.
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[env]
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CFLAGS = "/O2 /DNDEBUG"
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CXXFLAGS = "/O2 /DNDEBUG"
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