CONFIG_TOOLCHAIN_NEEDS_OLD_ISA_SPEC:

General informations

The Linux kernel configuration item CONFIG_TOOLCHAIN_NEEDS_OLD_ISA_SPEC:

• prompt:
• type: bool
• depends on: ( CONFIG_TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI ) && ( CONFIG_CC_IS_CLANG && CONFIG_CLANG_VERSION < CONFIG_170000 )
• defined in arch/riscv/Kconfig
• found in Linux kernels: 6.3, 6.4-rc+HEAD

Help text

Certain versions of clang do not support zicsr and zifencei via -march but newer versions of binutils require it for the reasons noted in the help text of TOOLCHAIN_NEEDS_EXPLICIT_ZICSR_ZIFENCEI. This option causes an older ISA spec compatible with these older versions of clang to be passed to GAS, which has the same result as passing zicsr and zifencei to -march.

Hardware

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Sources

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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