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Enable GNU2 TLS descriptors on x86-64 (GCC only) (RHEL-25031)

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Based on Fedora commit b7d1bfae1fb673c4d8a21a8866ba4e37b2cd6eaf.

Resolves: RHEL-25031
This commit is contained in:
Florian Weimer 2024-05-10 20:28:45 +02:00
parent 0181246574
commit d6d795286a
3 changed files with 8 additions and 2 deletions
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2
buildflags.md
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@ -620,6 +620,8 @@ tuning in the `gcc` package. These settings are:
applied. The default can be overriden (for any distribution)
by specifying `--target x86_64_v2`, `--target x86_64_v3`,
`--target x86_64_v4` in the `rpmbuild` invocation.
With the GCC toolchain, TLS descriptors are enabled using
`-mtls-dialect=gnu2`.
* **aarch64** does not have any architecture-specific tuning.
### Vala-specific compiler flags

3
macros
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@ -148,7 +148,8 @@ for k,_ in pairs(stripped_flags) do print(k .. " ") end
%__cflags_arch_x86_64_level %[0%{?rhel} == 9 ? "-v2" : ""]%[0%{?rhel} > 9 ? "-v3" : ""]
%__cflags_arch_x86_64 -march=x86-64%{?__cflags_arch_x86_64_level:%{__cflags_arch_x86_64_level}}
%__cflags_arch_x86_64_common -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection %{_frame_pointers_cflags} %{_frame_pointers_cflags_x86_64}
# -mtls-dialect=gnu2 is currently specific to GCC (#2263181).
%__cflags_arch_x86_64_common -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection %[ "%{toolchain}" == "gcc" ? "-mtls-dialect=gnu2 " : "" ]%{_frame_pointers_cflags} %{_frame_pointers_cflags_x86_64}
# Also used for s390.
%__cflags_arch_s390x %[0%{?rhel} >= 9 ? "-march=z14 -mtune=z15" : "-march=z13 -mtune=z14"]

5
redhat-rpm-config.spec
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@ -8,7 +8,7 @@
Summary: Red Hat specific rpm configuration files
Name: redhat-rpm-config
Version: 282
Release: 1%{?dist}
Release: 2%{?dist}
# config.guess, config.sub are GPL-3.0-or-later WITH Autoconf-exception-generic
License: GPL-1.0-or-later AND GPL-2.0-or-later AND GPL-3.0-or-later WITH Autoconf-exception-generic AND Boehm-GC
URL: https://src.fedoraproject.org/rpms/redhat-rpm-config
@ -260,6 +260,9 @@ install -p -m 644 -t %{buildroot}%{_rpmluadir}/fedora common.lua
%doc buildflags.md
%changelog
* Fri May 10 2024 Florian Weimer <fweimer@redhat.com> - 282-2
- Enable GNU2 TLS descriptors on x86-64 (GCC only) (RHEL-25031)
* Tue Feb 06 2024 Yaakov Selkowitz <yselkowi@redhat.com> - 282-1
- Loosen rust-srpm-macros requirement