4 ms·

I cross-compile to ARM all day long. The idea of editing and building on the target completely eludes me. I guess I shouldn't worry - it's job security.

Fronzie 7y ago
Recently I tried to cross-compile a Qt application. With differences in the moc executable between host (x86 debian) and target (rpi3), I couldn't quite get things to work (with cmake as build system). Do you have any tips?
- joezydeco 7y ago
  moc is run at compile, and it runs on the host. You shouldn't need to run it on the target. I'd get a complete toolchain from ARM's developer website, then build the entire Qt project for cross compilation on the host. Then you should be able to build the complete Qt app on x86 and deploy on ARM.
bitwize 7y ago
Not everybody uses the Pi for IoT. It was originally intended to be a child's primary computer and an educational tool. Being able to do useful programming work on the Pi itself is an important use case.
- joezydeco 7y ago
  Then why wasn't that ready with version 1? You're correct that it was originally an edu tool. It isn't anymore.
  - bitwize 7y ago
    It still is, albeit that's not its only use. Your assumption that no one should ever need to write or compile code on the Pi is wrong on its face.
- giobox 7y ago
  Ive always thought getting kids to write code on the prior generations of Pi was the fastest way to turn them off programming. Kids aren’t stupid, they can tell the computer is horrifically slow and not much fun to use as a desktop computer. It’s a truly terrible development desktop machine. It’s great fun for deploying the projects you built on a even vaguely modern other computer that doesn’t lag just dragging an IDE window around, but I sure as heck wouldn’t want to actually develop the code on it. I’m curious to see if the extra power offered by the 4 meaningfully changes this, but I don’t think it’s going to change my own habits.

Fronzie 7y ago

Recently I tried to cross-compile a Qt application. With differences in the moc executable between host (x86 debian) and target (rpi3), I couldn't quite get things to work (with cmake as build system). Do you have any tips?

joezydeco 7y ago
moc is run at compile, and it runs on the host. You shouldn't need to run it on the target. I'd get a complete toolchain from ARM's developer website, then build the entire Qt project for cross compilation on the host. Then you should be able to build the complete Qt app on x86 and deploy on ARM.

bitwize 7y ago

Not everybody uses the Pi for IoT. It was originally intended to be a child's primary computer and an educational tool. Being able to do useful programming work on the Pi itself is an important use case.

joezydeco 7y ago
Then why wasn't that ready with version 1? You're correct that it was originally an edu tool. It isn't anymore.
- bitwize 7y ago
  It still is, albeit that's not its only use. Your assumption that no one should ever need to write or compile code on the Pi is wrong on its face.
giobox 7y ago
Ive always thought getting kids to write code on the prior generations of Pi was the fastest way to turn them off programming. Kids aren’t stupid, they can tell the computer is horrifically slow and not much fun to use as a desktop computer. It’s a truly terrible development desktop machine. It’s great fun for deploying the projects you built on a even vaguely modern other computer that doesn’t lag just dragging an IDE window around, but I sure as heck wouldn’t want to actually develop the code on it. I’m curious to see if the extra power offered by the 4 meaningfully changes this, but I don’t think it’s going to change my own habits.