2.2: fails to build with make 4.4

[tgurr]

2.2: fails to build with make 4.4

[rathann]

I'm seeing the same on Fedora development branches (F38 and rawhide), which indeed have make-4.4. This seems to be related to the way make processes parallel jobs, because using make -j1 or plain make makes it build fine (though slower). make -j4 fails.

[tgurr]

I'm seeing the same on Fedora development branches (F38 and rawhide), which indeed have make-4.4. This seems to be related to the way make processes parallel jobs, because using make -j1 or plain make makes it build fine (though slower). make -j4 fails.

Thanks for the hint for this workaround for the time being! Working here as well when restricting it to build with -j1.

[barsnick]

I noticed that flite_lang_list.c and flite_voice_list.c are repeatedly being clobbered and built, instead of being built only once as dependencies. (flite_lang_list is a sort-of-dependency.)

In parallel builds, they are not only built multiple times, but are also erased after another thread has built them, resulting in this build failure.

A proper dependency and rule for each should fix this. I'm posting a PR for this.