date, and I should run autoupdate, which I did, and all was fine.
I checked then that updated configure.ac on Mint 19.2 (oldest distro I
have active) and it is fine there too.

to be honest I am not sure if updated configure.ac will work on  system with older autotools? it seems mostly cosmetic issue user can fix manually, and it even works as-is (at least on termux, and it tend to be rolling distro...) 

I took the opportunity to fix another error: The m4 directory was not
used. This is used when "missing" scripts are installed.

So I suggest to update the Cinelerra-gg with this.

MatN

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