I am looking at bundling both 4.1.1 and 3.4.6 with OSX-AVR has any one looked at gcc_select or integrating it into the chain?
I am fleshing out one but dont want to walk on work which is probably better done.
Don.
avr-gcc_select?
Author
Message
oh heck.
Not even a nibble.
Hmm. Never even heard of gcc_select.
Do you have a link?
Smacks forhead!
Its a mac thing.
Sorry,
Sometimes I forget that the osx folk actually occasionally add stuff instead of just making it a pain to use.
:twisted:
What the heck is it supposed to do, anyway?
It allows you to select which version of gcc you want to compile with and links in the appropriate libraries and utilities.
It was so handy I assumed it was from the gcc side and not the darwin side. If you google it there is a man page in the first couple of links.
Ah, well, but that's only the system (i.e. native target's) compiler.
I guess it's not very magic, probably even only a shell script. I'm
assuming all they are doing is to move the frontend symlinks for the
individual compiler version around to the default name "cc". For
example, if I look into my tools directory, I see the following
versions of avr-gcc around there:
/tools/i386/bin/avr-gcc* /tools/i386/bin/avr-gcc-3.4.4* /tools/i386/bin/avr-gcc-3.4.6* /tools/i386/bin/avr-gcc-4.1.0* /tools/i386/bin/avr-gcc-4.1.1*
As it is now (by default), that avr-gcc is simply a hard link to the
latest (avr-gcc-4.1.1 in this case) version of the compiler. So in
order to switch compilers, something like the following might work:
#! /bin/sh
PREFIX=/tools/i386
usage()
{
echo "usage: gcc_select [-l] [version_to_use]"
exit 64
}
func=set
while getopts "l" o
do
case "$o" in
l)
func=list
;;
*)
usage
;;
esac
shift
done
case $func in
list)
set -- $(echo ${PREFIX}/bin/avr-gcc-*)
echo "The following AVR-GCC versions are available:"
while [ $# -ne 0 ]
do
echo ${1#${PREFIX}/bin/avr-gcc-}
shift
done
exit 0
;;
set)
if [ $# -ne 1 ]
then
usage
fi
version="$1"
if [ ! -x ${PREFIX}/bin/avr-gcc-$version ]
then
echo "AVR-GCC version $version is not available"
exit 65
fi
ln -sf avr-gcc-$version ${PREFIX}/bin/avr-gcc || \
{ echo "Link failed"; exit 71; }
echo "Selected AVR-GCC version $version"
;;
esac
Of course, if you'd also like to switch your *library* environment,
that would be more complicated.