Thanks--sorry for the very late reply.
I did search but didn't find that specific thread--although I had found several others on the topic which led me to think simply specifying the macosx-version-min would be all that was needed. I was unsure of how to use it so tried several ways to no avail.
Using it as in the example from the link you provided, I still end up with an OSX 10.13 and later only embedded wish app. It makes me wonder if the "embedded" stand-alone build option is hosing things.
Below are my commands. Again, I don't do this often--is there something basic I'm missing here? <Wasn't sure which Makes should get the mmacosx-version-min arg, so used it in all of them>
BTW, I'm using the embedded build instructions from the "new" Mac aqua FAQ (
wiki.tcl-lang.org/page/New+Tcl%2FTkAqua+FAQ#6750c6b3086fb0aa6ce057ec7f101d06bd7ca242075c233f54c38591e1f3502d)
## The below resulted in a working Wish.app limited to OSX 11.13 and higher (I built it on 11.13)
ver="8.6.9"
macosxminver=10.9
make -C tcl${ver}/macosx embedded PREFIX="" CFLAGS_OPTIMIZE="-O2 -mmacosx-version-min=${macosxminver}"
make -C tk${ver}/macosx embedded PREFIX="" CFLAGS_OPTIMIZE="-O2 -mmacosx-version-min=${macosxminver}"
sudo make -C tcl${ver}/macosx install-embedded INSTALL_ROOT=`pwd`/embedded/ PREFIX="" CFLAGS_OPTIMIZE="-O2 -mmacosx-version-min=${macosxminver}"
sudo make -C tk${ver}/macosx install-embedded INSTALL_ROOT=`pwd`/embedded/ PREFIX="" CFLAGS_OPTIMIZE="-O2 -mmacosx-version-min=${macosxminver}"