Managing library size about rtools-packages HOT 2 CLOSED

You're asking many things here, I'll try to give some answers:

As far as I can see, all the rtools packages create libXXX.a files, without any shared libraries outside the R package.

Yes that is correct, these are called static libraries. See the readme.

However I then get stuck with missing symbols while building the problem libraries, and no combination of -Wl,--unresolved-symbols=ignore that I can find will fix the problem. A

This probably means you are missing a linker flag to some dependency. When you do static linking, you need to explicitly link all of the static libraries: -lfoo -lbar -lbaz.

One option that makes things considerably faster on linux is to build ITK and SimpleITK as shared libraries, which leads to the final .so file in R being about 7M instead of 700M.

I'm not sure how you end up with a 700M file, perhaps it has debugging symbols. You can either try to build with -O2 or use strip to remove debug symbols from the static libraries.

from rtools-packages.

I think this is solved via #120

from rtools-packages.