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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-10-14 23:26:58 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-10-14 23:26:58 +0200 |
| commit | 84d69848c97faab0c25aa2667b273404d2e2a64a (patch) | |
| tree | 594f3fe1b271b5255a1c5281e36f8bf938acd1c0 /arch/Kconfig | |
| parent | Merge tag 'docs-4.9-2' of git://git.lwn.net/linux (diff) | |
| parent | initramfs: Escape colons in depfile (diff) | |
| download | linux-84d69848c97faab0c25aa2667b273404d2e2a64a.tar.xz linux-84d69848c97faab0c25aa2667b273404d2e2a64a.zip | |
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kbuild updates from Michal Marek:
- EXPORT_SYMBOL for asm source by Al Viro.
This does bring a regression, because genksyms no longer generates
checksums for these symbols (CONFIG_MODVERSIONS). Nick Piggin is
working on a patch to fix this.
Plus, we are talking about functions like strcpy(), which rarely
change prototypes.
- Fixes for PPC fallout of the above by Stephen Rothwell and Nick
Piggin
- fixdep speedup by Alexey Dobriyan.
- preparatory work by Nick Piggin to allow architectures to build with
-ffunction-sections, -fdata-sections and --gc-sections
- CONFIG_THIN_ARCHIVES support by Stephen Rothwell
- fix for filenames with colons in the initramfs source by me.
* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: (22 commits)
initramfs: Escape colons in depfile
ppc: there is no clear_pages to export
powerpc/64: whitelist unresolved modversions CRCs
kbuild: -ffunction-sections fix for archs with conflicting sections
kbuild: add arch specific post-link Makefile
kbuild: allow archs to select link dead code/data elimination
kbuild: allow architectures to use thin archives instead of ld -r
kbuild: Regenerate genksyms lexer
kbuild: genksyms fix for typeof handling
fixdep: faster CONFIG_ search
ia64: move exports to definitions
sparc32: debride memcpy.S a bit
[sparc] unify 32bit and 64bit string.h
sparc: move exports to definitions
ppc: move exports to definitions
arm: move exports to definitions
s390: move exports to definitions
m68k: move exports to definitions
alpha: move exports to actual definitions
x86: move exports to actual definitions
...
Diffstat (limited to 'arch/Kconfig')
| -rw-r--r-- | arch/Kconfig | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/Kconfig b/arch/Kconfig index 180ea33164dc..11d349561ece 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -450,6 +450,27 @@ config CC_STACKPROTECTOR_STRONG endchoice +config THIN_ARCHIVES + bool + help + Select this if the architecture wants to use thin archives + instead of ld -r to create the built-in.o files. + +config LD_DEAD_CODE_DATA_ELIMINATION + bool + help + Select this if the architecture wants to do dead code and + data elimination with the linker by compiling with + -ffunction-sections -fdata-sections and linking with + --gc-sections. + + This requires that the arch annotates or otherwise protects + its external entry points from being discarded. Linker scripts + must also merge .text.*, .data.*, and .bss.* correctly into + output sections. Care must be taken not to pull in unrelated + sections (e.g., '.text.init'). Typically '.' in section names + is used to distinguish them from label names / C identifiers. + config HAVE_ARCH_WITHIN_STACK_FRAMES bool help |