5 files changed, 96 insertions, 1 deletions
diff --git a/sci-ml/onnx/Manifest b/sci-ml/onnx/Manifest
index 63363dcfb2f4..34bfa9cc9073 100644
--- a/sci-ml/onnx/Manifest
+++ b/sci-ml/onnx/Manifest
@@ -1,2 +1,3 @@
 DIST onnx-1.17.0.tar.gz 12475304 BLAKE2B 17e3cdd4bf101749ba841599d1b4e89ad80cfa3de6adabc10491f84ec928c385b1fe517e32657b24ca57d14780d51cc9a641860c06194cec082d9a9950004c8c SHA512 5a18e2b19ec9c18c8b115fb7e12ed98eddaa581c95f15c4dd420cd6c86e7caa04f9a393da589e76b89cf9b3544abd3749a8c77c2446782f37502eb74e9b1f661
 DIST onnx-1.18.0.tar.gz 12826788 BLAKE2B 7b48cf4017816c4ba926cc4bfcaf3b95d4630421e71e70f3f5ce47f2a9e152e1fa26ca1b407a198216fe777daf014546e35ce7ab06f47ddcebb5d71ee79e834c SHA512 2f38664947c8d1efc40620a7c1b1953d2aa4b0a37b67c4886b86e77c1d697363c26413413ddda8eabc545892fb1bcb43afc7e93e62f0901527524a2727e1ea8d
+DIST onnx-1.20.0.tar.gz 13187591 BLAKE2B b7ecbb2c52fe7227b665fa2933c252aa662d9394ab75fc741f1f8097177d53f6763f075c0855c19f8e57eeffae4020808c4d8b8ff2cc241bc76993ee4434037d SHA512 7b59ca1a42d3ca177a75e78d913c9fc4f6b80f167496b9416932289750f46c6999b02f4270fe7701917a494306bd84148f6d9d6cdaa0ca4f068d994ddd3076ab
diff --git a/sci-ml/onnx/files/onnx-1.18.0-don-t-hide-symbols-in-object-files.patch b/sci-ml/onnx/files/onnx-1.18.0-don-t-hide-symbols-in-object-files.patch
new file mode 100644
index 000000000000..8c9abb872a89
--- /dev/null
+++ b/sci-ml/onnx/files/onnx-1.18.0-don-t-hide-symbols-in-object-files.patch
@@ -0,0 +1,10 @@
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -520,7 +520,6 @@
+ else()
+   add_library(onnx ${ONNX_SRCS})
+ endif()
+-set_target_properties(onnx PROPERTIES CXX_VISIBILITY_PRESET hidden)
+ set_target_properties(onnx PROPERTIES VISIBILITY_INLINES_HIDDEN ON)
+ 
+ target_include_directories(onnx PUBLIC
diff --git a/sci-ml/onnx/files/onnx-1.20.0-don-t-hide-symbols-in-object-files.patch b/sci-ml/onnx/files/onnx-1.20.0-don-t-hide-symbols-in-object-files.patch
new file mode 100644
index 000000000000..d51360484b48
--- /dev/null
+++ b/sci-ml/onnx/files/onnx-1.20.0-don-t-hide-symbols-in-object-files.patch
@@ -0,0 +1,16 @@
+From: Pavel Sobolev <contact@paveloom.dev>
+Subject: [PATCH] Don't hide symbols in object files.
+
+Signed-off-by: Pavel Sobolev <contact@paveloom.dev>
+
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -443,7 +443,6 @@ add_library(onnx_object OBJECT ${ONNX_SRCS})
+ add_dependencies(onnx_object onnx_proto_object)
+ target_include_directories(onnx_object PUBLIC
+   $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>)
+-set_target_properties(onnx_object PROPERTIES CXX_VISIBILITY_PRESET hidden)
+ set_target_properties(onnx_object PROPERTIES VISIBILITY_INLINES_HIDDEN ON)
+ target_include_directories(onnx_object PUBLIC $<BUILD_INTERFACE:${ONNX_ROOT}>)
+ add_onnx_global_defines(onnx_object)
+
diff --git a/sci-ml/onnx/onnx-1.18.0.ebuild b/sci-ml/onnx/onnx-1.18.0-r1.ebuild
index 4b42678fbd58..90867f9579b5 100644
--- a/sci-ml/onnx/onnx-1.18.0.ebuild
+++ b/sci-ml/onnx/onnx-1.18.0-r1.ebuild
@@ -29,7 +29,8 @@ DEPEND="${RDEPEND}"
 
 src_prepare() {
 	eapply "${FILESDIR}"/${PN}-1.15.0-hidden.patch \
-		"${FILESDIR}"/${PN}-1.18.0-cmake.patch
+		"${FILESDIR}"/${PN}-1.18.0-cmake.patch \
+		"${FILESDIR}"/${P}-don-t-hide-symbols-in-object-files.patch
 	cmake_src_prepare
 	distutils-r1_src_prepare
 }
diff --git a/sci-ml/onnx/onnx-1.20.0.ebuild b/sci-ml/onnx/onnx-1.20.0.ebuild
new file mode 100644
index 000000000000..3f2d90b2229e
--- /dev/null
+++ b/sci-ml/onnx/onnx-1.20.0.ebuild
@@ -0,0 +1,67 @@
+# Copyright 2022-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+DISTUTILS_UPSTREAM_PEP517=standalone
+DISTUTILS_USE_PEP517=setuptools
+DISTUTILS_EXT=1
+PYTHON_COMPAT=( python3_{11..14} )
+inherit distutils-r1 cmake
+
+DESCRIPTION="Open Neural Network Exchange (ONNX)"
+HOMEPAGE="https://github.com/onnx/onnx"
+SRC_URI="https://github.com/onnx/${PN}/archive/refs/tags/v${PV}.tar.gz
+	-> ${P}.tar.gz"
+
+LICENSE="Apache-2.0"
+SLOT="0"
+KEYWORDS="~amd64 ~arm64"
+IUSE="disableStaticReg"
+RESTRICT="test"
+
+RDEPEND="
+	dev-cpp/abseil-cpp:=
+	dev-libs/protobuf:=[protoc(+)]
+	dev-python/ml-dtypes[$PYTHON_USEDEP]
+	dev-python/numpy[${PYTHON_USEDEP}]
+	dev-python/protobuf[${PYTHON_USEDEP}]
+	dev-python/typing-extensions[$PYTHON_USEDEP]
+"
+DEPEND="${RDEPEND}"
+BDEPEND="
+	dev-python/nanobind[${PYTHON_USEDEP}]
+"
+
+src_prepare() {
+	eapply "${FILESDIR}/${PN}-1.20.0-don-t-hide-symbols-in-object-files.patch"
+	cmake_src_prepare
+	distutils-r1_src_prepare
+}
+
+src_configure() {
+	mycmakeargs=(
+		-DONNX_USE_PROTOBUF_SHARED_LIBS=ON
+		-DONNX_USE_LITE_PROTO=ON
+		-DBUILD_SHARED_LIBS=ON
+		-DONNX_DISABLE_STATIC_REGISTRATION=$(usex disableStaticReg ON OFF)
+	)
+	cmake_src_configure
+}
+
+python_compile() {
+	local mycmakeargs=(
+		"${mycmakeargs[@]}"
+		-Dnanobind_DIR="$(python_get_sitedir)/nanobind/cmake"
+	)
+	CMAKE_ARGS="${mycmakeargs[@]}" distutils-r1_python_compile
+}
+
+src_compile() {
+	cmake_src_compile
+	distutils-r1_src_compile
+}
+
+src_install() {
+	cmake_src_install
+	distutils-r1_src_install
+}