[Slackbuilds-users] ARCH determination

[Marco Moock]

Hello!

Various SlackBuilds include something like this:

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i486 ;;
    arm*) ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) ARCH=$( uname -m ) ;;
  esac
fi

Which purpose does it have?

I understand that defining an architecture is sometimes used to produce 
builds specific for a CPU (e.g. to use x86_64-v3 instructions etc.).

Although, which purpose do the other values have?
$ARCH is not set by default.
If it gets the value of uname -m, that should be fine, or is that guess 
wrong?

-- 
kind regards
Marco

Junk-Mail bitte an trashcan at stinkedores.dorfdsl.de

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