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amd64 crt1: Explicitly use a PLT entry for main in the PIC case.
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Authored by jhb on Jul 19 2023, 6:31 PM.
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Details

Summary

This ensures GNU as generates a R_X86_64_PLT32 relocation instead of
R_X86_64_32.

Fixes: c969310c992a csu: Implement _start using as to satisfy unwinders on x86_64

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rG FreeBSD src repository
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jhb requested review of this revision.Jul 19 2023, 6:31 PM

This fixes linking dynamic binaries again with GCC 12.

This revision is now accepted and ready to land.Jul 19 2023, 6:40 PM

Thank you!
I also had to add:

LDFLAGS+=       -Wl,-znoexecstack

to secure/lib/libcrypto/**/**/Makefile.

EDIT: https://github.com/freebsd/freebsd-src/pull/800

In D41101#935894, @jlduran_gmail.com wrote:

Thank you!
I also had to add:

LDFLAGS+=       -Wl,-znoexecstack

to secure/lib/libcrypto/**/**/Makefile.

EDIT: https://github.com/freebsd/freebsd-src/pull/800

I have a separate review for this: D41102