Install libjasper in Ubuntu 18.04

When upgrade to Ubuntu 18.04, some libraries are still needed for OpenCV 3.4 and others, but not provided by the new OS. We can install it like this:

sudo add-apt-repository “deb http://security.ubuntu.com/ubuntu xenial-security main”
sudo apt update
sudo apt install libjasper1 libjasper-dev

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Install MITSUBA on Linux 16.04

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Compilation error due to introuvable file “bind_member_variable.hpp”

SOLUTION: modify « src/bsdfs/irawan.h » :

Line : #if BOOST_VERSION >= 106000

Becomes : #if BOOST_VERSION >= 105800

RE : http://stackoverflow.com/questions/36807135/how-to-install-bind-member-variable-hpp-in-ubuntu-16-04

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Scons –j 8

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Error when compiling « DScalar1 »

SOLUTION: modify « include/mitsuba/core/autodiff.h »

Add the following definition in the  “DScalar1”:

inline DScalar1& operator*=(const DScalar1 &v) {

    grad = v.grad * value + grad * v.value;

    value *= v.value;

    return *this;

}

RE : https://github.com/mitsuba-renderer/mitsuba/issues/3

via Install MITSUBA on Linux 16.04

(Updated for 18.04)To show the same display session in Ubuntu by Chrome Remote Desktop

The default configuration of Chrome Remote Desktop in Ubuntu opens a new session instead the same desktop currently running.

To fix this, please follow these steps:

Stop it:
/opt/google/chrome-remote-desktop/chrome-remote-desktop –stop

Back it up:
cp /opt/google/chrome-remote-desktop/chrome-remote-desktop /opt/google/chrome-remote-desktop/chrome-remote-desktop.orig

Edit: /opt/google/chrome-remote-desktop/chrome-remote-desktop

Change this to the size I wanted.
DEFAULT_SIZES = “1920×1080”

Set the X display number to the current display number (obtain it with echo $DISPLAY from any terminal).

FIRST_X_DISPLAY_NUMBER = 0

Comment out sections that look for additional displays:

#while os.path.exists(X_LOCK_FILE_TEMPLATE % display):
# display += 1
Reuse the existing X session instead of launching a new one. Alter launch_session() by commenting out launch_x_server() and launch_x_session() and instead setting the display environment variable, so that the function definition ultimately looks like the following:

def launch_session(self, x_args):
self._init_child_env()
self._setup_pulseaudio()
self._setup_gnubby()
#self._launch_x_server(x_args)
#self._launch_x_session()
display = self.get_unused_display_number()
self.child_env[“DISPLAY”] = “:%d” % display

Start it:
/opt/google/chrome-remote-desktop/chrome-remote-desktop –start

DONE. Now it attaches to Unity’s existing X Server on display :0.

Credit to the discussion of these post  https://productforums.google.com/forum/#!topic/chrome/LJgIh-IJ9Lk

https://superuser.com/questions/778028/configuring-chrome-remote-desktop-with-ubuntu-gnome-14-04

Compile Bundler in Ubuntu 12.04

1. Download the bundler-v0.4-source and install all  the required dependencies.

2. After make, we can see such error,

BundlerApp.h:620:32: error: cannot call constructor ‘SkeletalApp::BundlerApp’

3. The solution is to change “BundlerApp::BundlerApp();” to “BundlerApp();” in line 620 of the file of BundlerApp.h

Then we can make it successfully.