Can we use the COMMON symbol __gnu_lto_slim to detect -fno-fat-lto-objects on contemporary GNU/Linux (with the LTO linker plugin)?
We currently build the distribution with -ffat-lto-objects, and I want to switch away from that. Packages will need to opt in to -ffat-lto-objects if static objects they build escape the buildroot. And to make sure that this opt-in happens, I want to fail the build if there would be any -fno-fat-lto-objects objects leaking. Thanks, Florian