Disable LTO (GCC, Clang) globally for riscv64

While the change is not correct for upstream. We temporary disable LTO
to lower build times and thus increase general build throughput.

Signed-off-by: David Abdurachmanov <davidlt@rivosinc.com>

buildflags.md

@@ -131,7 +131,7 @@ a construct like this to avoid *lowering* a future default:
 
 ```
 %if %build_type_safety_c < 2
-%global %build_type_safety_c 2
+%global build_type_safety_c 2
 %endif
 ```
 

macros

@@ -350,10 +350,12 @@ for k,_ in pairs(stripped_flags) do print(k .. " ") end
 # to move the annobin notes into the separate debuginfo file.
 %_find_debuginfo_extra_opts %{?_annotated_build:--remove-section .gnu.build.attributes}
 
-# Include frame pointer information by default, except on RHEL
+# Include frame pointer information by default, except on RHEL 10 and earlier
+# On RHEL 11, we are enabling it for now, with the possibility of revoking it
+# at a later date.
 # https://fedoraproject.org/wiki/Changes/fno-omit-frame-pointer
 # Use "%undefine _include_frame_pointers" to disable.
-%_include_frame_pointers %{undefined rhel}
+%_include_frame_pointers %{undefined rhel} || 0%{?rhel} >= 11
 %_frame_pointers_cflags %{expr:0%{?_include_frame_pointers} ? "-fno-omit-frame-pointer" : ""}
 %_frame_pointers_cflags_x86_64 %{expr:0%{?_include_frame_pointers} ? "-mno-omit-leaf-frame-pointer" : ""}
 %_frame_pointers_cflags_aarch64 %{expr:0%{?_include_frame_pointers} ? "-mno-omit-leaf-frame-pointer" : ""}
@@ -378,10 +380,12 @@ for k,_ in pairs(stripped_flags) do print(k .. " ") end
 # to verify they have real sections/symbols after LTO stripping.  That
 # way we can detect installing an unusable .o/.a file.  This is on the TODO
 # list for F34.
-%_gcc_lto_cflags	-flto=auto -ffat-lto-objects
+# LTO is slow on riscv64, we want to prioritize build speeds right starting
+# Fedora 40.
+%_gcc_lto_cflags	%{nil}
 # riscv64 does not have ld.gold support needed for LTO with Clang.
 %_clang_lto_cflags	%{nil}
-%_lto_cflags		%{expand:%%{_%{toolchain}_lto_cflags}}
+%_lto_cflags		%{nil}
 
 # Default fortification level.
 #   "%define _fortify_level 2" to downgrade and

redhat-rpm-config.spec

@@ -4,12 +4,12 @@
 # 2) When making changes, increment the version (in baserelease) by 1.
 #    rpmdev-bumpspec and other tools update the macro below, which is used
 #    in Version: to get the desired effect.
-%global baserelease 270
+%global baserelease 271
 
 Summary: Red Hat specific rpm configuration files
 Name: redhat-rpm-config
 Version: %{baserelease}
-Release: 1.0.riscv64%{?dist}
+Release: 1.1.riscv64%{?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
@@ -255,11 +255,18 @@ install -p -m 644 -t %{buildroot}%{_rpmluadir}/fedora common.lua
 %doc buildflags.md
 
 %changelog
-* Thu Oct 12 2023 David Abdurachmanov <davidlt@rivosinc.com> - 270-1.0.riscv64
+* Thu Nov 30 2023 David Abdurachmanov <davidlt@rivosinc.com> - 271-1.1.riscv64
+- Set all LTO macros (_lto_cflags, _gcc_lto_cflags, _clang_lto_cflags) to nil
+  as we want to increase build times for packages.
+
+* Thu Nov 30 2023 David Abdurachmanov <davidlt@rivosinc.com> - 271-1.0.riscv64
 - Add riscv64 to %%gap_arches, %%java_arches, and %%nodejs_arches
 - Set %%_clang_lto_cflags to %%nil as ld.gold is not implemented for riscv64 
   and thus LTO with Clang doesn't work.
 
+* Fri Nov 03 2023 Stephen Gallagher <sgallagh@redhat.com> - 271-1
+- ELN: Enable frame pointers for RHEL 11+ (for now)
+
 * Thu Oct  5 2023 Florian Weimer <fweimer@redhat.com> - 270-1
 - Disable -fstack-clash-protection on riscv64 (#2242327)