x11-libs/pixman: Sync with Gentoo

It's from Gentoo commit 8442ca1e8de788caea61b0dee0d198f0ec6f013b.

sdk_container/src/third_party/portage-stable/x11-libs/pixman/Manifest

@@ -1,2 +1,3 @@
 DIST pixman-0.42.2.tar.xz 652984 BLAKE2B 6286a9d064a5a24017fccbb0a6e9f6ef932077c2e33ec043826d4a7a6c707c9111d3de4b806cbcdb47fc2794f1f930d24d078de1ff2912061967db0890540957 SHA512 3476e2676e66756b1af61b1e532cd80c985c191fb7956eb01702b419726cce99e79163b7f287f74f66414680e7396d13c3fee525cd663f12b6ac4877070ff4e8
 DIST pixman-0.43.0.tar.xz 638236 BLAKE2B 1a807d4d5598a5fe6077d6bbc7786cba41a698a1f03801cc5367ade8707500ee215a0faf65afe85f9e040b0380f1074c2fdfd31c0805dc41a4e5e34e36416764 SHA512 a90399b8c6aec218abb2f419fb5d6894acf9f4c7acb4fd3893b0b7c805ba47c82ee7efb363be59bb1a15b6997b2dddb7dba062a165503b035e1124fff1b271c9
+DIST pixman-0.43.2.tar.xz 637976 BLAKE2B 82734efb7cede5b1aeff3a865bfa2a81ff3176be50edc10deb1b5541f160b2dfd21303c1eccba53c0df83f471f3489084479a423dc2f818019af97d4b41dad68 SHA512 1a1d21b86b3c6784c4c2606b7069723b4dbb747eac9fce95bca86516787840379ffd49abc42d11e7143e85c32c85496f33c2562c7a910ca6f963599affdc3224

sdk_container/src/third_party/portage-stable/x11-libs/pixman/pixman-0.43.2.ebuild

@@ -0,0 +1,68 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+EGIT_REPO_URI="https://gitlab.freedesktop.org/pixman/pixman.git"
+
+if [[ ${PV} = 9999* ]]; then
+	GIT_ECLASS="git-r3"
+fi
+
+inherit ${GIT_ECLASS} flag-o-matic meson-multilib multiprocessing toolchain-funcs
+
+DESCRIPTION="Low-level pixel manipulation routines"
+HOMEPAGE="http://www.pixman.org/ https://gitlab.freedesktop.org/pixman/pixman/"
+if [[ ${PV} != 9999* ]]; then
+	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
+	SRC_URI="https://www.x.org/releases/individual/lib/${P}.tar.xz"
+fi
+
+LICENSE="MIT"
+SLOT="0"
+IUSE="cpu_flags_ppc_altivec cpu_flags_arm_iwmmxt cpu_flags_arm_iwmmxt2 cpu_flags_arm_neon loongson2f cpu_flags_x86_mmxext cpu_flags_x86_sse2 cpu_flags_x86_ssse3 static-libs test"
+RESTRICT="!test? ( test )"
+
+pkg_pretend() {
+	[[ ${MERGE_TYPE} != binary ]] && use test && tc-check-openmp
+}
+
+pkg_setup() {
+	[[ ${MERGE_TYPE} != binary ]] && use test && tc-check-openmp
+}
+
+multilib_src_configure() {
+	if ( use arm || use arm64 ) && tc-is-clang ; then
+		# See bug #768138 and https://gitlab.freedesktop.org/pixman/pixman/-/issues/46
+		append-cflags $(test-flags-CC -fno-integrated-as)
+	fi
+
+	local emesonargs=(
+		$(meson_feature cpu_flags_arm_iwmmxt iwmmxt)
+		$(meson_use     cpu_flags_arm_iwmmxt2 iwmmxt2)
+		$(meson_feature cpu_flags_x86_mmxext mmx)
+		$(meson_feature cpu_flags_x86_sse2 sse2)
+		$(meson_feature cpu_flags_x86_ssse3 ssse3)
+		$(meson_feature cpu_flags_ppc_altivec vmx)
+		$(meson_feature loongson2f loongson-mmi)
+		$(meson_feature test openmp) # only used in unit tests
+		$(meson_feature test tests)
+		-Ddefault_library=$(usex static-libs both shared)
+		-Ddemos=disabled
+		-Dgtk=disabled
+		-Dlibpng=disabled
+	)
+
+	if [[ ${ABI} == arm64 ]]; then
+		emesonargs+=($(meson_feature cpu_flags_arm_neon a64-neon))
+	elif [[ ${ABI} == arm ]]; then
+		emesonargs+=($(meson_feature cpu_flags_arm_neon neon))
+	fi
+
+	meson_src_configure
+}
+
+multilib_src_test() {
+	export OMP_NUM_THREADS=$(makeopts_jobs)
+	meson_src_test -t 100
+}