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Kconfig: move LTO options to Build Setup menu

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LTO is optimization option so it's more appropriate to place it
in the same place as other optimization options
This commit is contained in:
raiden00pl 2024-06-01 12:26:42 +02:00 committed by Alan Carvalho de Assis
parent e6973c764c
commit 37b3dc11a5
2 changed files with 38 additions and 38 deletions
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38
Kconfig
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@ -2432,6 +2432,44 @@ config DEBUG_OPTLEVEL
This string represents the custom optimization level that will be This string represents the custom optimization level that will be
used if DEBUG_CUSTOMOPT. used if DEBUG_CUSTOMOPT.
choice
prompt "Link Time Optimization (LTO)"
default LTO_NONE
---help---
This option enables Link Time Optimization (LTO), which allows the
compiler to optimize binaries globally.
If unsure, select LTO_NONE. Note that LTO is very resource-intensive
so it's disabled by default.
config LTO_NONE
bool "None"
---help---
Build the kernel normally, without Link Time Optimization (LTO).
config LTO_FULL
bool "GNU Full LTO (EXPERIMENTAL)"
depends on ARCH_TOOLCHAIN_GNU
---help---
Link time optimization is implemented as a GCC front end for a bytecode
bytecode representation of GIMPLE that is emitted in special sections
of .o files. Currently, LTO support is enabled in most ELF-based systems,
as well as darwin, cygwin and mingw systems.
config LTO_THIN
bool "Clang ThinLTO (EXPERIMENTAL)"
depends on ARCH_TOOLCHAIN_CLANG
---help---
This option enables Clang's ThinLTO, which allows for parallel
optimization and faster incremental compiles compared to the
CONFIG_LTO_FULL option. More information can be found
from Clang's documentation:
https://clang.llvm.org/docs/ThinLTO.html
If unsure, say Y.
endchoice
config DEBUG_OPT_UNUSED_SECTIONS config DEBUG_OPT_UNUSED_SECTIONS
bool "Optimization to eliminate the unused input sections" bool "Optimization to eliminate the unused input sections"
default y default y

38
arch/Kconfig
View File

@ -283,44 +283,6 @@ config ARCH_TOOLCHAIN_TASKING
bool bool
default n default n
choice
prompt "Link Time Optimization (LTO)"
default LTO_NONE
---help---
This option enables Link Time Optimization (LTO), which allows the
compiler to optimize binaries globally.
If unsure, select LTO_NONE. Note that LTO is very resource-intensive
so it's disabled by default.
config LTO_NONE
bool "None"
---help---
Build the kernel normally, without Link Time Optimization (LTO).
config LTO_FULL
bool "GNU Full LTO (EXPERIMENTAL)"
depends on ARCH_TOOLCHAIN_GNU
---help---
Link time optimization is implemented as a GCC front end for a bytecode
bytecode representation of GIMPLE that is emitted in special sections
of .o files. Currently, LTO support is enabled in most ELF-based systems,
as well as darwin, cygwin and mingw systems.
config LTO_THIN
bool "Clang ThinLTO (EXPERIMENTAL)"
depends on ARCH_TOOLCHAIN_CLANG
---help---
This option enables Clang's ThinLTO, which allows for parallel
optimization and faster incremental compiles compared to the
CONFIG_LTO_FULL option. More information can be found
from Clang's documentation:
https://clang.llvm.org/docs/ThinLTO.html
If unsure, say Y.
endchoice
config ARCH_GNU_NO_WEAKFUNCTIONS config ARCH_GNU_NO_WEAKFUNCTIONS
bool bool
depends on ARCH_TOOLCHAIN_GNU depends on ARCH_TOOLCHAIN_GNU