From fb633eb0b0c85bf07a80117a147d1ac365596dd1 Mon Sep 17 00:00:00 2001
From: Flatcar Buildbot <buildbot@flatcar-linux.org>
Date: Mon, 16 Oct 2023 07:10:21 +0000
Subject: [PATCH] app-arch/xz-utils: Sync with Gentoo

It's from Gentoo commit 5e95594973108f1836a35efec996cfbd69e209c0.
---
 .../app-arch/xz-utils/metadata.xml            |  1 +
 .../app-arch/xz-utils/xz-utils-5.4.4.ebuild   | 24 +++++++++++++++--
 .../app-arch/xz-utils/xz-utils-9999.ebuild    | 26 +++++++++++++++----
 3 files changed, 44 insertions(+), 7 deletions(-)

diff --git a/sdk_container/src/third_party/portage-stable/app-arch/xz-utils/metadata.xml b/sdk_container/src/third_party/portage-stable/app-arch/xz-utils/metadata.xml
index 89d8ff6798..3b217f332f 100644
--- a/sdk_container/src/third_party/portage-stable/app-arch/xz-utils/metadata.xml
+++ b/sdk_container/src/third_party/portage-stable/app-arch/xz-utils/metadata.xml
@@ -9,6 +9,7 @@
 		<flag name="extra-filters">Build additional filters that are not
 			used in any of the default xz presets. This includes delta
 			and BCJ coders, additional match finders and SHA256 checks.</flag>
+		<flag name="pgo">Optimize the build using Profile Guided Optimization (PGO)</flag>
 	</use>
 	<upstream>
 		<remote-id type="cpe">cpe:/a:tukaani:xz</remote-id>
diff --git a/sdk_container/src/third_party/portage-stable/app-arch/xz-utils/xz-utils-5.4.4.ebuild b/sdk_container/src/third_party/portage-stable/app-arch/xz-utils/xz-utils-5.4.4.ebuild
index 11ddc15f91..f5305d4007 100644
--- a/sdk_container/src/third_party/portage-stable/app-arch/xz-utils/xz-utils-5.4.4.ebuild
+++ b/sdk_container/src/third_party/portage-stable/app-arch/xz-utils/xz-utils-5.4.4.ebuild
@@ -6,7 +6,7 @@
 
 EAPI=8
 
-inherit libtool multilib multilib-minimal preserve-libs usr-ldscript
+inherit flag-o-matic libtool multilib multilib-minimal preserve-libs usr-ldscript
 
 if [[ ${PV} == 9999 ]] ; then
 	# Per tukaani.org, git.tukaani.org is a mirror of github and
@@ -47,7 +47,7 @@ HOMEPAGE="https://tukaani.org/xz/"
 # See top-level COPYING file as it outlines the various pieces and their licenses.
 LICENSE="public-domain LGPL-2.1+ GPL-2+"
 SLOT="0"
-IUSE="doc +extra-filters nls static-libs"
+IUSE="doc +extra-filters pgo nls static-libs"
 
 if [[ ${PV} != 9999 ]] ; then
 	BDEPEND+=" verify-sig? ( sec-keys/openpgp-keys-jiatan )"
@@ -103,6 +103,26 @@ multilib_src_configure() {
 	ECONF_SOURCE="${S}" econf "${myconf[@]}"
 }
 
+multilib_src_compile() {
+	# -fprofile-partial-training because upstream note the test suite isn't super comprehensive
+	# See https://documentation.suse.com/sbp/all/html/SBP-GCC-10/index.html#sec-gcc10-pgo
+	local pgo_generate_flags=$(usev pgo "-fprofile-update=atomic -fprofile-dir=${T}/${ABI}-pgo -fprofile-generate=${T}/${ABI}-pgo $(test-flags-CC -fprofile-partial-training)")
+	local pgo_use_flags=$(usev pgo "-fprofile-use=${T}/${ABI}-pgo -fprofile-dir=${T}/${ABI}-pgo $(test-flags-CC -fprofile-partial-training)")
+
+	emake CFLAGS="${CFLAGS} ${pgo_generate_flags}"
+
+	if use pgo ; then
+		emake CFLAGS="${CFLAGS} ${pgo_generate_flags}" -k check
+
+		if tc-is-clang; then
+			llvm-profdata merge "${T}"/${ABI}-pgo --output="${T}"/${ABI}-pgo/default.profdata || die
+		fi
+
+		emake clean
+		emake CFLAGS="${CFLAGS} ${pgo_use_flags}"
+	fi
+}
+
 multilib_src_install() {
 	default
 
diff --git a/sdk_container/src/third_party/portage-stable/app-arch/xz-utils/xz-utils-9999.ebuild b/sdk_container/src/third_party/portage-stable/app-arch/xz-utils/xz-utils-9999.ebuild
index 1ab617815a..f5305d4007 100644
--- a/sdk_container/src/third_party/portage-stable/app-arch/xz-utils/xz-utils-9999.ebuild
+++ b/sdk_container/src/third_party/portage-stable/app-arch/xz-utils/xz-utils-9999.ebuild
@@ -47,7 +47,7 @@ HOMEPAGE="https://tukaani.org/xz/"
 # See top-level COPYING file as it outlines the various pieces and their licenses.
 LICENSE="public-domain LGPL-2.1+ GPL-2+"
 SLOT="0"
-IUSE="doc +extra-filters nls static-libs"
+IUSE="doc +extra-filters pgo nls static-libs"
 
 if [[ ${PV} != 9999 ]] ; then
 	BDEPEND+=" verify-sig? ( sec-keys/openpgp-keys-jiatan )"
@@ -100,13 +100,29 @@ multilib_src_configure() {
 		myconf+=( --disable-path-for-script )
 	fi
 
-	# ifunc is incompatible w/ asan
-	# https://github.com/tukaani-project/xz/issues/62#issuecomment-1719489932
-	is-flagq -fsanitize=address && myconf+=( --disable-ifunc )
-
 	ECONF_SOURCE="${S}" econf "${myconf[@]}"
 }
 
+multilib_src_compile() {
+	# -fprofile-partial-training because upstream note the test suite isn't super comprehensive
+	# See https://documentation.suse.com/sbp/all/html/SBP-GCC-10/index.html#sec-gcc10-pgo
+	local pgo_generate_flags=$(usev pgo "-fprofile-update=atomic -fprofile-dir=${T}/${ABI}-pgo -fprofile-generate=${T}/${ABI}-pgo $(test-flags-CC -fprofile-partial-training)")
+	local pgo_use_flags=$(usev pgo "-fprofile-use=${T}/${ABI}-pgo -fprofile-dir=${T}/${ABI}-pgo $(test-flags-CC -fprofile-partial-training)")
+
+	emake CFLAGS="${CFLAGS} ${pgo_generate_flags}"
+
+	if use pgo ; then
+		emake CFLAGS="${CFLAGS} ${pgo_generate_flags}" -k check
+
+		if tc-is-clang; then
+			llvm-profdata merge "${T}"/${ABI}-pgo --output="${T}"/${ABI}-pgo/default.profdata || die
+		fi
+
+		emake clean
+		emake CFLAGS="${CFLAGS} ${pgo_use_flags}"
+	fi
+}
+
 multilib_src_install() {
 	default