vasilito
cb424d7448
verify-patch-sanity.py validates every active recipe .patch has internally- consistent hunk line counts — catching the 'malformed patch at line N' failure at commit/CI/preflight time instead of hours into a cook. This cycle hit that class three times (qtwaylandscanner, sddm, xwayland), each only discovered when cookbook tried to apply the patch. Running it across the repo found 29 latent malformed patches (validated against GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22'). They were harmless only because they sit in vendored recipes (baked, not re- applied) — but would fail on any version-bump re-derivation. --fix recounts the hunk headers (body untouched) and repaired all 29. Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test (test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats (empty placeholders, bare-@@ git hunks).
75 lines
3.0 KiB
ReStructuredText
75 lines
3.0 KiB
ReStructuredText
====================
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Clang nvlink Wrapper
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====================
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.. contents::
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:local:
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.. _clang-nvlink-wrapper:
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Introduction
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============
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This tools works as a wrapper around the NVIDIA ``nvlink`` linker. The purpose
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of this wrapper is to provide an interface similar to the ``ld.lld`` linker
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while still relying on NVIDIA's proprietary linker to produce the final output.
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``nvlink`` has a number of known quirks that make it difficult to use in a
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unified offloading setting. For example, it does not accept ``.o`` files as they
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must be named ``.cubin``. Static archives do not work, so passing a ``.a`` will
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provide a linker error. ``nvlink`` also does not support link time optimization
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and ignores many standard linker arguments. This tool works around these issues.
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Usage
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=====
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This tool can be used with the following options. Any arguments not intended
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only for the linker wrapper will be forwarded to ``nvlink``.
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.. code-block:: console
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OVERVIEW: A utility that wraps around the NVIDIA 'nvlink' linker.
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This enables static linking and LTO handling for NVPTX targets.
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USAGE: clang-nvlink-wrapper [options] <options to passed to nvlink>
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OPTIONS:
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--arch <value> Specify the 'sm_' name of the target architecture.
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--cuda-path=<dir> Set the system CUDA path
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--dry-run Print generated commands without running.
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--feature <value> Specify the '+ptx' freature to use for LTO.
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-g Specify that this was a debug compile.
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-help-hidden Display all available options
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-help Display available options (--help-hidden for more)
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-L <dir> Add <dir> to the library search path
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-l <libname> Search for library <libname>
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-mllvm <arg> Arguments passed to LLVM, including Clang invocations,
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for which the '-mllvm' prefix is preserved. Use '-mllvm
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--help' for a list of options.
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-o <path> Path to file to write output
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--plugin-opt=jobs=<value>
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Number of LTO codegen partitions
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--plugin-opt=lto-partitions=<value>
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Number of LTO codegen partitions
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--plugin-opt=O<O0, O1, O2, or O3>
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Optimization level for LTO
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--plugin-opt=thinlto<value>
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Enable the thin-lto backend
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--plugin-opt=<value> Arguments passed to LLVM, including Clang invocations,
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for which the '-mllvm' prefix is preserved. Use '-mllvm
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--help' for a list of options.
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--save-temps Save intermediate results
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--version Display the version number and exit
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-v Print verbose information
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Example
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=======
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This tool is intended to be invoked when targeting the NVPTX toolchain directly
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as a cross-compiling target. This can be used to create standalone GPU
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executables with normal linking semantics similar to standard compilation.
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.. code-block:: console
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clang --target=nvptx64-nvidia-cuda -march=native -flto=full input.c
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