Build problem on Ubuntu

[TheHammer]

For some JavaFX work I have Java 8 installed. I understand that JCEF isn't yet working with Java 8 so I also installed java 7. Both installs are sitting in /usr/lib/jvm as
java-8-oracle and java-7-oracle and I'm able to swtich between them using

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sudo update-alternatives --config java

switching to Java 7 and calling java -version I do get

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java version "1.7.0_80"
Java(TM) SE Runtime Environment (build 1.7.0_80-b15)
Java HotSpot(TM) 64-Bit Server VM (build 24.80-b11, mixed mode)

However that did not seem to change the JAVA_HOME variable and so when executing

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cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Debug

I get

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-- Could NOT find JNI (missing:  JAVA_AWT_LIBRARY JAVA_JVM_LIBRARY JAVA_INCLUDE_PATH JAVA_INCLUDE_PATH2 JAVA_AWT_INCLUDE_PATH) (Required is at least version "1.7")
CMake Error at CMakeLists.txt:208 (message):
  A Java installation is required.  Set the JAVA_HOME environment variable to
  explicitly specify the Java installation directory.

So I set JAVA_HOME in /etc/environment so the line looks like this

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JAVA_HOME="/usr/lib/java-*"

I also tried

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JAVA_HOME="/usr/lib/java-7-oracle"

if I source it and then echo $JAVA_HOME it gives me that path but I still get the same error. What is it going to take to get this setup so I can start actually working with it? I've done more troubleshooting just rrying to get JCEF to build than I have developing.

[magreenblatt]

Try removing the jcef_build directory, re-creating it and re-running CMake after setting the JAVA_HOME variable. You might also need to set the variable using export for CMake to pick it up:

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export JAVA_HOME=/usr/lib/java-7-oracle

[TheHammer]

I noticed that the instructions say to create that directory and then enter it, but the list file can't be found if you do that. I assume it's to be run out of that dir?

[magreenblatt]

I noticed that the instructions say to create that directory and then enter it, but the list file can't be found if you do that. I assume it's to be run out of that dir?

You need the '..' at the end of the cmake command. See the BranchesAndBuilding Wiki page.

[TheHammer]

I noticed that the instructions say to create that directory and then enter it, but the list file can't be found if you do that. I assume it's to be run out of that dir?

You need the '..' at the end of the cmake command. See the BranchesAndBuilding Wiki page.

Ah I see. Did that. Got the same error that it can't find Java. Even tried it on a fresh install of 15.04 VM with openJDK instead. exported the path as you described.

[TheHammer]

This didn't work either BTW

http://ubuntuforums.org/showthread.php?t=2252373

[TheHammer]

The following however DOES work

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cmake -G "Unix Makefiles" -DJAVA_HOME=/usr/lib/jvm/java-7-oracle -DCMAKE_BUILD_TYPE=Debug ..

cmake is picking it up from the arguments not the variables.

[TheHammer]

I'm about ready to give this up. I've spent an entire very valuable day doing this. Even from a clean Ubuntu 15.04 install from scratch, following all of the directions to the letter on the JCEF site and now I have a compile error.

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/home/chris/projects/JCEF/src/native/CefApp.cpp:23:22: fatal error: gdk/gdkx.h: No such file or directory
compilation terminated.



I have libgtk2.0-dev installed and I tried numerous other libraries and quite a bit of Google searching to try to resolve this. I'm afraid

Currently supported distributions include Debian Wheezy, Ubuntu Precise, and related. Newer versions will likely also work but may not have been tested. Required packages include: build-essential, libgtk2.0-dev.

doesn't come close to what is needed.

Disappointing because this was supposed to be a demonstrator app for my employer for embedding CEF but I may have to go with JavaFX which doesn't have the same message passing between HTML and host and not as good a version of webkit. Or I learn C++ well enough real damn quick.

[magreenblatt]

Unfortunately it's not possible for me to test JCEF on every distro and version of Linux. I use Ubuntu 14.04 LTS 64-bit and it works for me. Maybe you should start with Windows or OS X where the development environment is more homogenious.

[everflux]

For me, using Ubuntu 15.10, the following packages were required: cmake, libgtk2.0-dev and build essential.

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sudo apt-get install cmake libgtk2.0-dev build-essential


The main problem was that and old version of libgcrypt, libgcrypt11 was needed as well... I installed it manually:

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wget https://launchpad.net/ubuntu/+archive/primary/+files/libgcrypt11_1.5.3-2ubuntu4.2_amd64.deb
sudo dpkg -i libgcrypt*