Yeah, I think what's going on is that - due to the above change - gcc-11
no longer enables an FPU independently of the selected arch. The FPU is
only enabled because the default -march is armv7-a+fp. The kernel build
is overriding GCC's (new) built-in default march to one that does not
have "+fp", so no flags remain to enable the FPU. edk2 does something
similar, and changing it's forced -march from armv7-a to armv7-a+fp
works for me.
** Also affects: gcc-11 (Ubuntu)
Importance: Undecided
Status: New
** Changed in: gcc-defaults (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1939379
Title:
ARM kernel builds fail with GCC 11
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