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guix: build GCC with --enable-standard-branch-protection

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To enable Branch Target Identification Mechanism and Return
Address Signing by default at configure time use the
`--enable-standard-branch-protection` option.

This is equivalent to having `-mbranch-protection=standard` during
compilation. This can be explicitly disabled during compilation
by passing the `-mbranch-protection=none` option which turns off
all types of branch protections.

See:
https://gcc.gnu.org/install/specific.html#aarch64-x-x
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fanquake 2023-08-14 13:23:25 +01:00
parent 71b63195b3
commit 7850c5fe20
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contrib/guix/manifest.scm
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@ -423,6 +423,7 @@ inspecting signatures in Mach-O binaries.")
(list "--enable-initfini-array=yes",
"--enable-default-ssp=yes",
"--enable-default-pie=yes",
"--enable-standard-branch-protection=yes",
building-on)))
((#:phases phases)
`(modify-phases ,phases