Single parameter with multiple values - referencing extended-choice parameter values - jenkins

Question

I am stuck with the following situation in Jenkins.
A job needs to build multiple make targets. This will happen through multiple invocations of make per run as it allows only 1 target at a time. I want to allow users to select which targets to build with each run.
I tried with extended-choice parameter plugin (Multi-select), but could not figure out how to parse multiple values from it, and how to structure my call to make
Can someone help me with this

Answer 1

Extended-choice parameter will always list its selected values as TARGET=value1,value2. At best, you can enforce the values to be quoted like this TARGET="value1,value2"
You have to parse this TARGET value to get it into the format you want.
If you could pass targets to make in sequence, like make value1 value2, all you would need is to change that comma , in value of TARGET to a space . You didn't provide your OS, so I will assume *nix. You can use the following to quickly do that ${TARGET//,/ }
Finally, since make does not appear to support multiple targets (according to OP), we need a loop.
So, in your Jenkins Execute Shell build step, type:
for currentTarget in ${TARGET//,/ }; do
make $currentTarget
done
This will be equivalent to:
make value1
make value2
As for the order of thing: the order of these values will always be same as they are defined in job configuration. It doesn't matter in what order the user chooses these.

Answer 2

REQUIREMENT:
The parameter $TARGETS had 26 values (Values might be added/deleted in future). The user is interested in selecting which parameters he wants to build this time.
$TARGETS=make1,make2,make3.......
TRIAL:
Jenkins "extended choice parameter". Could assign multiple values to a parameter and user gets the option to select multiple values.
During build with make $TARGETS, I got error, could not "make make1 make2".
I needed
make make1
make make2
SOLUTION:
In the build step, use "for loop"
for currentTarget in ${TARGET//,/ }; do
make $currentTarget
done
Thanks to #Slav
Hope this helps people who might face similar situation.
Thanks