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kbuild: add CONFIG_ASM_MODVERSIONS

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Add CONFIG_ASM_MODVERSIONS. This allows to remove one if-conditional
nesting in scripts/Makefile.build.

scripts/Makefile.build is run every time Kbuild descends into a
sub-directory. So, I want to avoid $(wildcard ...) evaluation
where possible although computing $(wildcard ...) is so cheap that
it may not make measurable performance difference.

Signed-off-by: Masahiro Yamada <[email protected]>
Acked-by: Geert Uytterhoeven <[email protected]>
This commit is contained in:
Masahiro Yamada 2019-08-19 14:54:20 +09:00
commit 2ff2b7ec65
14 changed files with 27 additions and 6 deletions
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7
arch/Kconfig
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@ -289,6 +289,13 @@ config ARCH_32BIT_OFF_T
still support 32-bit off_t. This option is enabled for all such
architectures explicitly.
config HAVE_ASM_MODVERSIONS
bool
help
This symbol should be selected by an architecure if it provides
<asm/asm-prototypes.h> to support the module versioning for symbols
exported from assembly code.
config HAVE_REGS_AND_STACK_ACCESS_API
bool
help