From a99f896cd626d72b39c3d2482d615c0e9a711b51 Mon Sep 17 00:00:00 2001
From: Krzesimir Nowak <knowak@microsoft.com>
Date: Tue, 23 Aug 2022 16:51:27 +0200
Subject: [PATCH] eclass/ninja-utils: Sync with Gentoo

It's from Gentoo commit 5a34097c8957c40d5b09fe6d249449c22f7f1ea5.
---
 .../portage-stable/eclass/ninja-utils.eclass  | 44 +++++++++++++++----
 1 file changed, 35 insertions(+), 9 deletions(-)

diff --git a/sdk_container/src/third_party/portage-stable/eclass/ninja-utils.eclass b/sdk_container/src/third_party/portage-stable/eclass/ninja-utils.eclass
index e69244b39f..0dffd2eb86 100644
--- a/sdk_container/src/third_party/portage-stable/eclass/ninja-utils.eclass
+++ b/sdk_container/src/third_party/portage-stable/eclass/ninja-utils.eclass
@@ -1,8 +1,6 @@
-# Copyright 1999-2021 Gentoo Authors
+# Copyright 1999-2022 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
-# Flatcar: Support EAPI 4.
-
 # @ECLASS: ninja-utils.eclass
 # @MAINTAINER:
 # Michał Górny <mgorny@gentoo.org>
@@ -10,7 +8,7 @@
 # @AUTHOR:
 # Michał Górny <mgorny@gentoo.org>
 # Mike Gilbert <floppym@gentoo.org>
-# @SUPPORTED_EAPIS: 4 5 6 7 8
+# @SUPPORTED_EAPIS: 5 6 7 8
 # @BLURB: common bits to run dev-util/ninja builder
 # @DESCRIPTION:
 # This eclass provides a single function -- eninja -- that can be used
@@ -21,14 +19,29 @@
 # Meson).
 
 case ${EAPI} in
-	4|5|6|7|8) ;;
+	5|6|7|8) ;;
 	*) die "${ECLASS}: EAPI ${EAPI:-0} not supported" ;;
 esac
 
 if [[ -z ${_NINJA_UTILS_ECLASS} ]]; then
 _NINJA_UTILS_ECLASS=1
 
-# @ECLASS-VARIABLE: NINJAOPTS
+# @ECLASS_VARIABLE: NINJA
+# @PRE_INHERIT
+# @DESCRIPTION:
+# Specify a compatible ninja implementation to be used by eninja().
+# At this point only "ninja" and "samu" are explicitly supported,
+# but other values can be set where NINJA_DEPEND will then be set
+# to a blank variable.
+# The default is set to "ninja".
+: ${NINJA:=ninja}
+
+# @ECLASS_VARIABLE: NINJA_DEPEND
+# @OUTPUT_VARIABLE
+# @DESCRIPTION:
+# Contains a set of build-time depenendencies based on the NINJA setting.
+
+# @ECLASS_VARIABLE: NINJAOPTS
 # @DEFAULT_UNSET
 # @DESCRIPTION:
 # The default set of options to pass to Ninja. Similar to MAKEOPTS,
@@ -37,6 +50,18 @@ _NINJA_UTILS_ECLASS=1
 
 inherit multiprocessing
 
+case "${NINJA}" in
+	ninja)
+		NINJA_DEPEND=">=dev-util/ninja-1.8.2"
+	;;
+	samu)
+		NINJA_DEPEND="dev-util/samurai"
+	;;
+	*)
+		NINJA_DEPEND=""
+	;;
+esac
+
 # @FUNCTION: eninja
 # @USAGE: [<args>...]
 # @DESCRIPTION:
@@ -45,12 +70,13 @@ inherit multiprocessing
 # with EAPI 6, it also supports being called via 'nonfatal'.
 eninja() {
 	local nonfatal_args=()
-	[[ ${EAPI} != [45] ]] && nonfatal_args+=( -n )
+	[[ ${EAPI} != 5 ]] && nonfatal_args+=( -n )
 
 	if [[ -z ${NINJAOPTS+set} ]]; then
-		NINJAOPTS="-j$(makeopts_jobs) -l$(makeopts_loadavg "${MAKEOPTS}" 0)"
+		NINJAOPTS="-j$(makeopts_jobs "${MAKEOPTS}" 999) -l$(makeopts_loadavg "${MAKEOPTS}" 0)"
 	fi
-	set -- ninja -v ${NINJAOPTS} "$@"
+	[[ -n "${NINJA_DEPEND}" ]] || ewarn "Unknown value '${NINJA}' for \${NINJA}"
+	set -- "${NINJA}" -v ${NINJAOPTS} "$@"
 	echo "$@" >&2
 	"$@" || die "${nonfatal_args[@]}" "${*} failed"
 }