Fix for broken script compilervars.sh with zsh on MacOS after latest compiler upgrade

[FDuncanH]

The most recent version of the shell script compilervars.sh added a section  to

remove duplicate paths.     Its fine for bash, but breaks zsh (whis no default in MacOS.

"echo $(!arg) "  is incorrect  syntax in  the zshell scripting.

 I found the fix below ,   It might be useful for anyone using zhell on macos.

I not sure how to report this to the product team.

(the uncorrected script destroys $PATH  for command line users))

Broken script

------------------function remove_duplicate_paths----------------------------

remove_duplicate_paths() {
local arg=$1

if [ "${INTEL_HOST_PLATFORM}" = "Darwin" ]; then
local arr=(`echo ${!arg} | sed 's/:/\'$'\n/g'`)
else
local arr=(`echo ${!arg} | sed 's/:/\n/g'`)
fi

fixed script below

# ------------------function remove_duplicate_paths----------------------------
remove_duplicate_paths() {
local arg=$1
eval "value=\"\${$arg}\""
if [ "${INTEL_HOST_PLATFORM}" = "Darwin" ]; then
local arr=(`echo ${value} | sed 's/:/\'$'\n/g'`)
else
local arr=(`echo ${!arg} | sed 's/:/\n/g'`)
fi

[Ron_Green]

we know about this one.  We have, to date, not supported zsh.  Given that Apple is forcing us to zsh we're adding full POSIX support for zsh and ksh in a future update.

Simplest workaround is:

% bash -c 'source /opt/intel/bin/compilervars.sh intel64 ; exec zsh'

Which will end up with a new zsh instance, so if you exit from the new instance you will lose the env vars.