Cannot compile on Ubuntu 14.04

[nico87]

Running cmake -G'Unix Makefiles' . inside the flatui main folder in Ubuntu 14.04 causes the following error:

The source directory

    /home/yourname/flatui/dependencies/mathfu

  does not contain a CMakeLists.txt file.

All the needed libraries are installed. I've also tried to checkout the entire project again bu I had the very same issue.

[lilianmoraru]

I can confirm the same issue on Ubuntu 15.10. I installed the suggested dependencies listed below the error.
After this message, you see this error:

~/Git/flatui/dependencies/harfbuzz ~/Git/flatui
$HOME/Git/flatui/cmake/harfbuzz/autogen_if_changed.sh: line 32: $HOME/Git/flatui/dependencies/harfbuzz/autogen.sh: No such file or directory
CMake Error at cmake/harfbuzz/CMakeLists.txt:46 (message):
  CMake encountered an error while configuring harfbuzz.

Note: I replaced my actual home folder with $HOME
Note 2: Installing libharfbuzz-dev didn't help

[lilianmoraru]

@nico87 There is no setup script so seems like you have to go into the dependencies folder and do git clone for every project you have there.
Example:

git clone https://github.com/google/flatui.git
cd flatui/dependencies

git clone https://github.com/behdad/harfbuzz.git
git clone https://github.com/google/mathfu.git
git clone https://github.com/google/fplbase.git
...

[hak]

Hello,
It's using git submodules.
Could you try
git clone --recursive https://github.com/google/flatui
?

hak
On Nov 22, 2015 1:41 PM, "Lilian Anatolie Moraru" notifications@github.com
wrote:

@nico87 https://github.com/nico87 There is no setup script so seems
like you have to go into the dependencies folder and do git clone for
every project you have there.
Example:

git clone https://github.com/google/flatui.git
cd flatui/dependencies

git clone https://github.com/behdad/harfbuzz.git
git clone https://github.com/google/mathfu.git
git clone https://github.com/google/fplbase.git
...

—
Reply to this email directly or view it on GitHub
#2 (comment).

[lilianmoraru]

@hak Yes, it worked.
Edit: It compiled but both flatuisample and flatuitest say ERROR: The specified window has not been made current a lot of times and then segfault.

[nico87]

@hak and @lilianmoraru It worked. Thanks! Maybe it would be good to add the checkout instructions in the readme file.

On my system both flatuisample and flatuitest work correctly.

[ghost]

That's an SDL error, and I'm not quite sure what could cause it. Anything non-standard about your system? Are you in a VM? Do other applications that use OpenGL work?

[nico87]

@lilianmoraru I've tested the sample and test builds on a pc with an old ATI X1900 graphics adapter and I get the same error "The specified window has not been made current". I think it's about OpenGL. With this adapter I've never been able to run an OpenGL application under Linux.
Maybe you are in the same situation?

[lilianmoraru]

@gwvo @nico87 Yes, I ran the application in a VM. VMWare 12 with the tools installed.
Yes, other applications that use OpenGL work.
For example, we have Qt Quick 2 applications running in the VM. Qt Quick 2 has a hard requirement on OpenGL 2.1 or higher.

[ghost]

FlatUI (and FPLBase which it uses for rendering) currently asks for OpenGL 3.1 on Linux. This is because of instancing support, which FlatUI doesn't yet use, so it could be downgraded to 2.1.

To test if this is the case, change 3 to 2 in dependencies/fplbase/src/renderer.cpp:114

[lilianmoraru]

@gwvo It looks fuzzy and weird but it works.

[ghost]

Yes, our current test isn't pretty, if that's what you're referring to :)

I'll see what I can do to lower the minimum requirements to 2.1