Checkpoint before runtime optimization

build-windows-cuda-clang.ps1

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+$ErrorActionPreference = 'Stop'
+
+$llvm = 'C:\Program Files\LLVM\bin'
+$mingw = 'C:\msys64\mingw64'
+$gccBin = Join-Path $mingw 'bin'
+
+if (!(Test-Path (Join-Path $llvm 'clang.exe'))) { throw "clang.exe not found at $llvm" }
+if (!(Test-Path (Join-Path $gccBin 'gcc.exe'))) { throw "gcc.exe not found at $gccBin" }
+
+$cudaInc = 'C:\PROGRA~1\NVIDIA~2\CUDA\v13.2\include'
+$sdrplayInc = 'C:\PROGRA~1\SDRplay\API\inc'
+$sdrplayLib = 'C:\PROGRA~1\SDRplay\API\x64'
+
+$env:PATH = "$llvm;$gccBin;" + $env:PATH
+$env:CGO_ENABLED = '1'
+$env:CC = 'clang --target=x86_64-w64-windows-gnu --sysroot=C:/msys64/mingw64'
+$env:CXX = 'clang++ --target=x86_64-w64-windows-gnu --sysroot=C:/msys64/mingw64'
+$env:CPATH = "$cudaInc;$sdrplayInc"
+$env:C_INCLUDE_PATH = "$cudaInc;$sdrplayInc"
+$env:CPLUS_INCLUDE_PATH = "$cudaInc;$sdrplayInc"
+$env:CGO_CFLAGS = "--sysroot=C:/msys64/mingw64 -I$cudaInc -I$sdrplayInc"
+$env:CGO_CPPFLAGS = "--sysroot=C:/msys64/mingw64 -I$cudaInc -I$sdrplayInc"
+$env:CGO_CXXFLAGS = "--sysroot=C:/msys64/mingw64 -I$cudaInc -I$sdrplayInc"
+$env:CGO_LDFLAGS = "--sysroot=C:/msys64/mingw64 -L$sdrplayLib -lsdrplay_api"
+
+Write-Host "Testing runtime/cgo with clang GNU target..." -ForegroundColor Cyan
+go build runtime/cgo
+if ($LASTEXITCODE -ne 0) { throw "runtime/cgo build failed" }
+
+Write-Host "Preparing CUDA kernel artifacts..." -ForegroundColor Cyan
+powershell -ExecutionPolicy Bypass -File tools\build-gpudemod-kernel.ps1
+if ($LASTEXITCODE -ne 0) { throw "kernel build failed" }
+
+Write-Host "Building Windows CUDA + SDRplay app with clang GNU target..." -ForegroundColor Cyan
+go build -tags "sdrplay,cufft" ./cmd/sdrd
+if ($LASTEXITCODE -ne 0) { throw "windows cuda clang build failed" }
+
+Write-Host "Done." -ForegroundColor Green

run-hw.log

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+gpudemod: loaded DLL C:\Users\jan\Downloads\sdr-visual-suite\gpudemod_kernels.dll
+2026/03/19 11:19:40 web listening on :8080
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