Clang feature fix for v5.13-rc7
- The "-warn-stack-size" option under LTO has moved in Clang 13 (Tor Vic) -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmDJNGgACgkQiXL039xt wCbB5BAAgaM3xPIT+BlEnbdOGaBXKIfO9RybXifX/8B8m3d1FwB7WG7rXWLtHau7 ks/NIM3952cGovCTyOwQZF4YnEUxUY/M1OnY8Mrxd+wvtiMWumgJHo/w53a43ltU twK4sXfPCheCmVT+PaT5x12mNuqXDaT+1IFLiTp++gijxUYdMIp9Wcd3GQ5XY3oh 9UQhbukYvWxWefbuMZnphvGRouiFAY2HbhP9tPDrhFz8PFlDNYSBedUwDx5uBIET 5HwJwaBhHvdW9YHs2byGkbpROTwDwUwXq8RfoRW+9enj49G8tcpE7fxNDjfyw3SQ YXibn1e21H3HQu8uXjyoUECV1LReEcAq7aN2sacX2RRTe1FLo+9VTLmE52Ro3KQU iCcB84nEam7noCZf/oPAdBzE6+zi6PJ31r1a9Sa9S/A349arE8BfKzmtU3G+vfz+ BhnGFd3hUxBd0jbbeB+J+CYRVB2/AKlex9DpyW6tlmejDk8D+i6scpn5C66PO8HQ 9k76VnZ8H2yynLfIzENdYglKIKrnVeTlJitpfVes2mBGeqWtPJ9dCYwH8C5wP1lc Eu9e7zC7YmUanZyfFSEU2cG5o54BTUMapW8tXAburZQTDWMZhA1DXNABG6MDBNti ddHVZ3nQdmpFQlhREV7CXK+t3+0RXsDiP0FDBfCbQAkDLZkeZqg= =ULcM -----END PGP SIGNATURE----- Merge tag 'clang-features-v5.13-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull clang LTO fix from Kees Cook: "It seems Clang has been scrubbing through the missing LTO IR flags for Clang 13, and the last of these 'only with LTO' flags is fixed now. I've asked that they please consider making these changes in a less 'break all the Clang kernel builds' kind of way in the future. :P Summary: - The '-warn-stack-size' option under LTO has moved in Clang 13 (Tor Vic)" * tag 'clang-features-v5.13-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: Makefile: lto: Pass -warn-stack-size only on LLD < 13.0.0
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@ -929,11 +929,14 @@ CC_FLAGS_LTO += -fvisibility=hidden
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# Limit inlining across translation units to reduce binary size
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KBUILD_LDFLAGS += -mllvm -import-instr-limit=5
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# Check for frame size exceeding threshold during prolog/epilog insertion.
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# Check for frame size exceeding threshold during prolog/epilog insertion
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# when using lld < 13.0.0.
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ifneq ($(CONFIG_FRAME_WARN),0)
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ifeq ($(shell test $(CONFIG_LLD_VERSION) -lt 130000; echo $$?),0)
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KBUILD_LDFLAGS += -plugin-opt=-warn-stack-size=$(CONFIG_FRAME_WARN)
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endif
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endif
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endif
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ifdef CONFIG_LTO
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KBUILD_CFLAGS += -fno-lto $(CC_FLAGS_LTO)
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