I'm currently compiling the libint library. This release to be specific. During the process, an libint2.a archive is created. I'd like to add the right compile flags such that the llvm-bc will be embeded into the object file and as a consequence into that archive.

For the first part, I've read that instead of using the fembed-bitcode flag, most people prefer using -flto, as lto will already imply the embedding. So the following Flags should be fine, right? lld links to an appropriate llvm-lld. -DCMAKE_CXX_FLAGS="-O3 -flto -fuse-ld=lld"

Now, how do I continue from here, to verify that the bitcode is part of my archive? I've mostly found solutions for apple (otool), not for ubuntu. It seems like either llvm-otool, or llvm-objdump and some grepping for the LLVM section should work, but I fail to put the pieces together. Can someone please help me with with the correct set of commands / flags, startig with my archive?

Edit: Focused my example on the relevant flags.