Headless build following instructions in docs doesn't work

[thegnarwhals]

I followed the instructions in the docs using v0.14.1: http://www.open3d.org/docs/release/tutorial/visualization/headless_rendering.html

Below is the dockerfile I have written. You will need to download the zipped repository for tag 0.14.1 and save it alongside the dockerfile. It errors on docker build . with the following error:

In file included from /Open3D-0.14.1/3rdparty/glew/src/glew.c:34:0:
/Open3D-0.14.1/3rdparty/glew/include/GL/glew.h:1205:14: fatal error: GL/glu.h: No such file or directory
 #    include <GL/glu.h>
              ^~~~~~~~~~
compilation terminated.
CMakeFiles/3rdparty_glew.dir/build.make:75: recipe for target 'CMakeFiles/3rdparty_glew.dir/3rdparty/glew/src/glew.c.o' failed
make[2]: *** [CMakeFiles/3rdparty_glew.dir/3rdparty/glew/src/glew.c.o] Error 1
make[1]: *** [CMakeFiles/3rdparty_glew.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....

Note that it is unable to find the glew headers. Note cmake is configured to not use system glew as instructed by the docs: -DUSE_SYSTEM_GLEW=OFF \

from ubuntu:18.04

RUN apt-get update && apt-get install -y software-properties-common
RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -qy --no-install-recommends \
    ca-certificates \
    curl \
    g++ \
    gcc \
    git \
    libcurl4 \
    libcurl4-openssl-dev \
    libfreetype6-dev \
    libfribidi-dev \
    libgl1-mesa-glx \
    libharfbuzz-dev \
    libjpeg8-dev \
    liblcms2-dev \
    libopenjp2-7-dev \
    libosmesa6-dev \
    libsnappy-dev \
    libssl-dev \
    libtiff5-dev \
    libunwind-dev \
    libwebp-dev \
    libxcb1-dev \
    nasm \
    openssl \
    python3-pip \
    python3-setuptools \
    python3-tk \
    python3-wheel \
    python3.8 \
    python3.8-dev \
    tcl8.6-dev \
    tk8.6-dev \
    unzip \
    wget \
    zlib1g-dev \
    && rm -rf /var/lib/apt/lists/*

RUN python3.8 -m pip install cython  # Needed before installing numpy
RUN python3.8 -m pip install numpy matplotlib
RUN python3.8 -m pip install cmake
RUN cmake --version

ADD Open3D-0.14.1.zip .
RUN unzip Open3D-0.14.1.zip
WORKDIR Open3D-0.14.1

RUN pwd
RUN ls

RUN mkdir build
WORKDIR build

# configure build
RUN cmake -DENABLE_HEADLESS_RENDERING=ON \
          -DBUILD_GUI=OFF \
          -DBUILD_WEBRTC=OFF \
          -DUSE_SYSTEM_GLEW=OFF \
          -DUSE_SYSTEM_GLFW=OFF \
          -DCMAKE_BUILD_TYPE=Release \
          -DPYTHON_EXECUTABLE:FILEPATH=/usr/bin/python3.8 \
          -DPYPI_PACKAGE_NAME=my_open3d_headless \
          ..

RUN make -j$(nproc)
RUN make pip-package

[thegnarwhals]

I can confirm this problem still exists when trying to build the current head of master, and when using 20.04 as a base. I have even tried adding

    libglew2.1 \
    libglfw3-dev \

To the list of apt installs, and it still doesn't find the headers, with or without the flags

          -DUSE_SYSTEM_GLEW=OFF \
          -DUSE_SYSTEM_GLFW=OFF \

[thegnarwhals]

Might spend a couple of hours looking into a fix for this myself now will update later

[thegnarwhals]

Interestingly I don't get this error in my local 20.04 environment when building master, so it must be either

1. something missing from the dockerfile
2. a very recent fix on master

[thegnarwhals]

Ah okay I think adding libglu1-mesa-dev to the apt installs may be the fix, will test

[thegnarwhals]

Can confirm this works fine!