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I am running a Odroid with Ubuntu Mate. I need to download qt and so I need to know if I should get the 32 or 64 bit version of qt. 

odroid@odroid:~/software/qt5$ uname -i
armv7l

uname -i returns armv7l. Does that mean I should download the 32 or 64 bit of qt?

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2 Answers 2

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armv7l is 32 bit processor.

If you need a little bit more information regarding ARMv8, please read @Rinzwind's answer :-)

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  • Just FYI, Stack Exchange is a wiki. You can edit other peoples posts. You should have just edited that other post to add the one sentence in your answer.
    – falsePockets
    Nov 1, 2022 at 23:21
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ARMv8 is 64-bit. With 32-bit compatibility.

The ARMv8 architecture introduces 64-bit support to the ARM architecture with a focus on power-efficient implementation while maintaining compatibility with existing 32-bit software. By adopting a clean approach ARMv8-A processors extend the performance range available while maintaining the low power consumption characteristics of the ARM processors that will power tomorrow's most innovative and efficient devices. ARM has 3 different product tiers supporting the ARMv8-A architecture: High Performance, High Efficiency, and Ultra-High Efficiency.

ARMv8-A introduces 64-bit architecture support to the ARM architecture and includes:

  • 64-bit general purpose registers, SP (stack pointer) and PC (program counter)
  • 64-bit data processing and extended virtual addressing

Two main execution states:

  • AArch64 - The 64-bit execution state including exception model, memory -model, programmers' model and instruction set support for that state
  • AArch32 - The 32-bit execution state including exception model, memory model, programmers' model and instruction set support for that state

Anything lower (like ARMv7) is 32-bit.

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    OP asks specifically about ARMv7 and you fill half a page about v8 just to mention in your last sentence that v7 is always 32 bit? I mean, it's correct of course, but... you know
    – Byte Commander ♦
    Jun 22, 2017 at 21:41
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    I keep reading and reading to see what v8 had to do with v7 or if there was some connection. Nope.
    – Lo-Tan
    Apr 29, 2018 at 13:44
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    Like the other commenters above, I'm confused as to why both you and Dipesh KC have made references to ARMv8, when the question is about armv7l. Are they actually different, or are they one and the same? It kinda seems like the latter is true, since uname -m gives me armv7l on my Raspberry Pi 4, but its product page mentions ARMv8 and 64-bit in the 'Tech Specs' table. A thourough explanation of these two contrasting terms for the seemingly-same thing would be very much appreciated! MTIA :-)
    – Kenny83
    Nov 1, 2021 at 17:26
  • Never mind - this other SE answer explains the disparity quite well. Guess I need a better distro than the "official and recommended" Raspbian!
    – Kenny83
    Nov 1, 2021 at 17:33

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