[bug #19108] Pattern rules with multiple target patterns do not honor the dependencies of all targets correctly

[Valery]

Follow-up Comment #6, bug #19108 (project make):

I am lost. In my case 2 targets are generated after a command is completed.

targ1 targ2: some dependencies
      ./my_long_command

And I try to avoid two invocations of the command. When I use "make -j 2" the
double invocation happens. Since my command lasts 2 hours it becomes an issue
:(

How to avoid double invocation? 
Any hints/comments?

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