Update glibc version (2.31), Ubuntu version (20.04), C++ version (17)…

… requirements.

README.md

@@ -49,7 +49,7 @@ For more, please visit the [Open3D documentation](https://www.open3d.org/docs).
 
 ## Python quick start
 
-Pre-built pip packages support Ubuntu 18.04+, macOS 10.15+ and Windows 10+
+Pre-built pip packages support Ubuntu 20.04+, macOS 10.15+ and Windows 10+
 (64-bit) with Python 3.8-3.11.
 
 ```bash

docker/README.md

@@ -48,7 +48,7 @@ To verify that the ARM64 environment is working, run:
 # The following warning message is expected: "WARNING: The requested image's
 # platform (linux/arm64/v8) does not match the detected host platform
 # (linux/amd64) and no specific platform was requested aarch64."
-docker run --rm arm64v8/ubuntu:18.04 uname -p
+docker run --rm arm64v8/ubuntu:24.04 uname -p
 ```
 
 ## Build and test Docker

docs/_static/docker/Dockerfile

@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 
 # ENV http_proxy ""
 # ENV HTTP_PROXY ""

docs/compilation.rst

@@ -8,15 +8,15 @@ Build from source
 System requirements
 -------------------
 
-* C++14 compiler:
+* C++17 compiler:
 
- * Ubuntu 18.04+: GCC 5+, Clang 7+
+ * Ubuntu 20.04+: GCC 5+, Clang 7+
  * macOS 10.15+: XCode 8.0+
  * Windows 10 (64-bit): Visual Studio 2019+
 
-* CMake: 3.19+
+* CMake: 3.24+
 
- * Ubuntu (18.04 / 20.04):
+ * Ubuntu (20.04+):
 
  * Install with ``apt-get``: see `official APT repository <https://apt.kitware.com/>`_
  * Install with ``snap``: ``sudo snap install cmake --classic``
@@ -238,12 +238,6 @@ The visualization module depends on the Filament rendering engine and, by defaul
 Open3D uses a prebuilt version of it. You can also build Filament from source
 by setting ``BUILD_FILAMENT_FROM_SOURCE=ON``.
 
-.. note::
- Whereas Open3D only requires a C++14 compiler, Filament needs a C++17 compiler
- and only supports Clang 7+, the most recent version of Xcode, and Visual Studio 2019,
- see `their building instructions <https://github.com/google/filament/blob/main/BUILDING.md>`_.
- Make sure to use one of these compiler if you build Open3D with ``BUILD_FILAMENT_FROM_SOURCE=ON``.
-
 ML Module
 `````````
 
@@ -390,8 +384,8 @@ After installing ``ccache``, simply reconfigure and recompile the Open3D
 library. Open3D's CMake script can detect and use it automatically. You don't
 need to setup additional paths except for the ``ccache`` program itself.
 
-Ubuntu 18.04, 20.04
-```````````````````
+Ubuntu 20.04+
+`````````````
 
 If you install ``ccache`` via ``sudo apt install ccache``, the 3.x version will
 be installed. To cache CUDA compilations, you'll need the 4.0+ version. Here, we

docs/contribute/contribution_recipes.rst

@@ -29,7 +29,7 @@ Dos
 +-------------------------------------------------------------------------------------------------------------+
 | [DO] Follow the :ref:`style_guide` and install the required tools |
 +-------------------------------------------------------------------------------------------------------------+
-| [DO] Use C++14 features when contributing C++ code |
+| [DO] Use C++17 features when contributing C++ code |
 +-------------------------------------------------------------------------------------------------------------+
 | [DO] Remember to provide Python bindings when adding new C++ core functionalities |
 +-------------------------------------------------------------------------------------------------------------+

docs/contribute/styleguide.rst

@@ -58,7 +58,7 @@ We generally follow the `Google C++ Style Guide <https://google.github.io/styleg
 * Use ``#pragma once`` for header guard.
 * All Open3D classes and functions are nested in namespace ``open3d``.
 * Avoid using naked pointers. Use ``std::shared_ptr`` and ``std::unique_ptr`` instead.
-* C++11 features are recommended, but C++14 and C++17 are also accepted.
+* C++17 features are acceptable. Do not use C++20 or later features.
 
 We also recommend reading the `C++ Core Guidelines <https://github.com/isocpp/CppCoreGuidelines/blob/master/CppCoreGuidelines.md>`_.
 

docs/docker.in.rst

@@ -57,7 +57,7 @@ To run GUI applications from the docker container, add these options to the
 
  - NVIDIA: ``--gpus 'all,"capabilities=compute,utility,graphics"'``
 
- - No GPU (CPU rendering): ``--env OPEN3D_CPU_RENDERING=true`` on Ubuntu 18.04. Later versions automaticaly select CPU rendering if a GPU is not available.
+ - No GPU (CPU rendering): CPU rendering is automaticaly selected if a GPU is not available.
 
 2. X server: ``-v /tmp/.X11-unix:/tmp/.X11-unix -e DISPLAY``
 

docs/getting_started.in.rst

@@ -13,7 +13,7 @@ interact with it. You can download the latest stable release app from `Github
 releases <https://github.com/isl-org/Open3D/releases>`__. The latest development
 version (``HEAD`` of ``main`` branch) viewer app is provided here [#]_:
 
-* `Linux (Ubuntu 18.04+ or glibc 2.27+) <https://github.com/isl-org/Open3D/releases/download/main-devel/open3d-viewer-@OPEN3D_VERSION_FULL@-Linux.deb>`__ [#]_
+* `Linux (Ubuntu 20.04+ or glibc 2.31+) <https://github.com/isl-org/Open3D/releases/download/main-devel/open3d-viewer-@OPEN3D_VERSION_FULL@-Linux.deb>`__ [#]_
 * `MacOSX v10.15+ (Intel or Apple Silicon) <https://github.com/isl-org/Open3D/releases/download/main-devel/open3d-@OPEN3D_VERSION_FULL@-app-macosx-10_15-universal2.zip>`__
 * `Windows 10+ (64-bit) <https://github.com/isl-org/Open3D/releases/download/main-devel/open3d-@OPEN3D_VERSION_FULL@-app-windows-amd64.zip>`__
 
@@ -95,16 +95,16 @@ version (``HEAD`` of ``main`` branch):
  :widths: auto
 
  * - Linux
- - `Python 3.8 <https://github.com/isl-org/Open3D/releases/download/main-devel/open3d-@OPEN3D_VERSION_FULL@-cp38-cp38-manylinux_2_27_x86_64.whl>`__
- - `Python 3.9 <https://github.com/isl-org/Open3D/releases/download/main-devel/open3d-@OPEN3D_VERSION_FULL@-cp39-cp39-manylinux_2_27_x86_64.whl>`__
- - `Python 3.10 <https://github.com/isl-org/Open3D/releases/download/main-devel/open3d-@OPEN3D_VERSION_FULL@-cp310-cp310-manylinux_2_27_x86_64.whl>`__
- - `Python 3.11 <https://github.com/isl-org/Open3D/releases/download/main-devel/open3d-@OPEN3D_VERSION_FULL@-cp311-cp311-manylinux_2_27_x86_64.whl>`__
+ - `Python 3.8 <https://github.com/isl-org/Open3D/releases/download/main-devel/open3d-@OPEN3D_VERSION_FULL@-cp38-cp38-manylinux_2_31_x86_64.whl>`__
+ - `Python 3.9 <https://github.com/isl-org/Open3D/releases/download/main-devel/open3d-@OPEN3D_VERSION_FULL@-cp39-cp39-manylinux_2_31_x86_64.whl>`__
+ - `Python 3.10 <https://github.com/isl-org/Open3D/releases/download/main-devel/open3d-@OPEN3D_VERSION_FULL@-cp310-cp310-manylinux_2_31_x86_64.whl>`__
+ - `Python 3.11 <https://github.com/isl-org/Open3D/releases/download/main-devel/open3d-@OPEN3D_VERSION_FULL@-cp311-cp311-manylinux_2_31_x86_64.whl>`__
 
  * - Linux (CPU)
- - `Python 3.8 <https://github.com/isl-org/Open3D/releases/download/main-devel/open3d_cpu-@OPEN3D_VERSION_FULL@-cp38-cp38-manylinux_2_27_x86_64.whl>`__
- - `Python 3.9 <https://github.com/isl-org/Open3D/releases/download/main-devel/open3d_cpu-@OPEN3D_VERSION_FULL@-cp39-cp39-manylinux_2_27_x86_64.whl>`__
- - `Python 3.10 <https://github.com/isl-org/Open3D/releases/download/main-devel/open3d_cpu-@OPEN3D_VERSION_FULL@-cp310-cp310-manylinux_2_27_x86_64.whl>`__
- - `Python 3.11 <https://github.com/isl-org/Open3D/releases/download/main-devel/open3d_cpu-@OPEN3D_VERSION_FULL@-cp311-cp311-manylinux_2_27_x86_64.whl>`__
+ - `Python 3.8 <https://github.com/isl-org/Open3D/releases/download/main-devel/open3d_cpu-@OPEN3D_VERSION_FULL@-cp38-cp38-manylinux_2_31_x86_64.whl>`__
+ - `Python 3.9 <https://github.com/isl-org/Open3D/releases/download/main-devel/open3d_cpu-@OPEN3D_VERSION_FULL@-cp39-cp39-manylinux_2_31_x86_64.whl>`__
+ - `Python 3.10 <https://github.com/isl-org/Open3D/releases/download/main-devel/open3d_cpu-@OPEN3D_VERSION_FULL@-cp310-cp310-manylinux_2_31_x86_64.whl>`__
+ - `Python 3.11 <https://github.com/isl-org/Open3D/releases/download/main-devel/open3d_cpu-@OPEN3D_VERSION_FULL@-cp311-cp311-manylinux_2_31_x86_64.whl>`__
 
  * - MacOS
  - `Python 3.8 (x86_64) <https://github.com/isl-org/Open3D/releases/download/main-devel/open3d-@OPEN3D_VERSION_FULL@-cp38-cp38-macosx_11_0_x86_64.whl>`__
@@ -183,7 +183,7 @@ rendering resources. These are built with all supported features and are
 available for the main supported platforms. Also, the latest development version
 (``HEAD`` of ``main`` branch) binary package archives are provided here [#]_:
 
-:Linux (Ubuntu 18.04+ or glibc 2.27+ [#]_):
+:Linux (Ubuntu 20.04+ or glibc 2.31+ [#]_):
  .. hlist::
  :columns: 2
 

docs/release.md

@@ -17,12 +17,12 @@ Collect all release artifacts in the [Github draft release page](https://github.
  Configure: `cmake -DCMAKE_BUILD_TYPE=Release -DDEVELOPER_BUILD=OFF -DCMAKE_EXPORT_COMPILE_COMMANDS=ON 
  -DBUILD_TENSORFLOW_OPS=ON -DBUILD_PYTORCH_OPS=ON -DBUNDLE_OPEN3D_ML=ON ..`
 
- - [ ] Ubuntu 18.04 Python (all versions) (follow docs/arm.rst) (desktop)
+ - [ ] Ubuntu 20.04 Python (all versions) (follow docs/arm.rst) (desktop)
 
  Build command: `cd docker; ./docker_build.sh openblas-arm64-py311; ...`
 
 - [ ] Build Open3D app
- - [ ] Ubuntu 18.04, Windows 10, macOS 10.15 x86_64: (CI)
+ - [ ] Ubuntu 20.04, Windows 10, macOS 10.15 x86_64: (CI)
  - [ ] macOS 12 arm64 (desktop)
  - [ ] macOS (x86_64, arm64) sign (desktop):
 

examples/cmake/open3d-cmake-external-project/CMakeLists.txt

@@ -1,5 +1,5 @@
-# On Ubuntu 18.04, get the latest CMake from https://apt.kitware.com/.
-cmake_minimum_required(VERSION 3.18)
+# On Ubuntu 20.04, get the latest CMake from https://apt.kitware.com/.
+cmake_minimum_required(VERSION 3.24)
 
 project(Open3DCMakeExternalProject LANGUAGES C CXX)
 

examples/cmake/open3d-cmake-find-package/CMakeLists.txt

@@ -1,5 +1,5 @@
-# On Ubuntu 18.04, get the latest CMake from https://apt.kitware.com/.
-cmake_minimum_required(VERSION 3.18)
+# On Ubuntu 20.04, get the latest CMake from https://apt.kitware.com/.
+cmake_minimum_required(VERSION 3.24)
 
 project(Open3DCMakeFindPackage LANGUAGES C CXX)
 

examples/python/visualization/non_english.py

@@ -39,7 +39,7 @@
  hanzi = "c:/windows/fonts/msyh.ttc" # YaHei UI
  chess = "c:/windows/fonts/seguisym.ttf" # Segoe UI Symbol
 else:
- # Assumes Ubuntu 18.04
+ # Assumes Ubuntu 20.04
  serif = "DejaVuSerif"
  hanzi = "NotoSansCJK"
  chess = "/usr/share/fonts/truetype/freefont/FreeSerif.ttf"

python/README.rst

@@ -38,7 +38,7 @@ Supported platforms
 
 The package has been tested on:
 
-* Ubuntu 18.04 and 20.04
+* Ubuntu 20.04 and 22.04
 * Windows 10 64-bit
 * macOS High Sierra and above