Suppression of "no symbols" warnings emitted by ranlib #214
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This was referenced May 24, 2023
lhstrh
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This addresses warnings reported on Mac such as:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: libcore.a(scheduler_adaptive.c.o) has no symbolsThese warnings are expected because we use the preprocessor to exclude the contents of files that relate to features that are not used.
I have checked that this change suppresses the warnings on the 2013 Mac that we have been using.