CONFIG_LTO_CLANG_FULL: Clang Full LTO (EXPERIMENTAL)

General informations

The Linux kernel configuration item CONFIG_LTO_CLANG_FULL:

• prompt: Clang Full LTO (EXPERIMENTAL)
• type: bool
• depends on: ( CONFIG_HAS_LTO_CLANG ) && (! CONFIG_COMPILE_TEST )
• defined in arch/Kconfig
• found in Linux kernels: 5.12–5.19, 6.0–6.8, 6.9-rc+HEAD

Help text

This option enables Clang's full Link Time Optimization (LTO), which allows the compiler to optimize the kernel globally. If you enable this option, the compiler generates LLVM bitcode instead of ELF object files, and the actual compilation from bitcode happens at the LTO link step, which may take several minutes depending on the kernel configuration. More information can be found from LLVM's documentation:

https://llvm.org/docs/LinkTimeOptimization.html

During link time, this option can use a large amount of RAM, and may take much longer than the ThinLTO option.

Hardware

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This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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