Mobile and Embedded

@neha9 I had the same problem： Failed to mmap framebuffer (Invalid argument) linuxfb: Failed to initialize screen Segmentation fault Have you solved it yet？

Ok I have solved the problem. I was already using: source /opt/b2qt/2.5.3/environment-setup-aarch64-poky-linux to setup the environment before I launched Clion, but apparently there were some sub scripts that run making an alias of cmake with: alias cmake="cmake -DCMAKE_TOOLCHAIN_FILE=$OECORE_NATIVE_SYSROOT/usr/share/cmake/OEToolchainConfig.cmake" Clion ignores this alias, so I had to add those flags to the cmake options area in Clion under Build, Execution, Deployment -> Cmake -> Cmake options, I also had to fill in the variable $OECORE_NATIVE_SYSROOT, as clion could not resolve that. Here is what I added: -DCMAKE_TOOLCHAIN_FILE=/opt/b2qt/2.5.3/sysroots/x86_64-pokysdk-linux/usr/share/cmake/OEToolchainConfig.cmake After that everything was compiling perfectly fine.

@elpidamachairidou do you use a recent (preferably LTS) version of Qt, because there was one older one, where there were problems similar to what you describe

@ishi Visual Studio is of no interest here as you cannot use it to cross compile to ARM Linux as far as I know. If your app is using OpenCV you will either need to install it on your RPi (including the -dev package) and sync the sysroot, or cross-compile it.

Because you are then subscribing which will trigger network connection which might fail for some reasons that might be explained through that property.

@lukas_kosinski would also be great to have more codes - esp Code39 and EAN-Barcodes are essential for my apps

@KroMignon thank you sir for your information

@ocgltd Well I solved it - for anyone else experiencing this here is the solution. It (appears) that QML will not release audio players, so every one you create is held forever. The solution is to create a single audio player, in a singleton, and then use that to play (non-overlapping) audio files; changing the source each time.

@md2012 Hi! Did you solve it? I have same problem. help me :)

IIRCR there's one "Resources" folder that is one the same level as the folder containing the executable (or maybe one above) where you can put the various bits and pieces that are not Framework and plugins. Then all that would be required for you is to have a "prefix" that you configure using an ifdef and use it when needing to load these files.

Hi, Good question, the easiest would be to try. If still not, you have two options: make them part of your bundle copy the file from the resources to a temporary path and play them from there.

Thanks for the info.

I see on apple site that size is limited to 25MB, so I'm already well within that range (each file is < 1MB). So that's not it. I deleted build folders, couldn't find any qmake.stash, cleaned and rebuilt. Still same error. I include only 2 launch images now (ignore ipad in plist) and error remains.... Perhaps I should give up on this approach. From what I read online Apple has already deprecated launchimage inside plist. Are there any Qt friendly steps for building/using a storyboard with launch images?

SOLVED - there is a known issue regarding permissions when running gradle with files stored on an SMB share. I moved my server files to an NFS share and all works great. (I would give the link but already lost it)

You're welcome ! Do you got it to work ?