find nvToolsExt.h under nvtx3 on CUDA 12+ - #11
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DanielMSussman merged 1 commit intoSep 4, 2026
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std_include.h includes nvToolsExt.h unqualified, and CUDA 12 moved that header into an nvtx3/ subdirectory, so a CUDA-enabled build fails with "fatal error: nvToolsExt.h: No such file or directory" on any toolkit from 12 onwards. This searches the toolkit include directories for it and adds whichever one holds it.