The rules in make scripts are executed in the default shell - overrideable by an appropriate setting of the SHELL macro in the make script.
BTW, in your example, if you use test -f ... in a make rule and the file doesn't exist, make(1) will abort since it traps all non-success error codes and quits.
The prefixing of any line with a -, avoids this.
Update
Using straight shell i.e. no perl available, I tend to use shell expansion together with a case statement -
which returns no status, thus avoiding upsetting make(1) - so in this case ...
target:
case "filename*" in \
\*) : ;; \
*) rm file ;; \
esac
Of course if you're using
sh, the easiest solution is to use
rm -f file...
HTH ,
At last, a user level that overstates my experience :-))
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