Here's a list of the current signature libraries we have available:

Linux:

• Ubuntu libc: x86, x86_64, arm32, arm64 (all versions)
• Ubuntu libgcc: x86, x86_64, arm32, arm64 (all versions)

For the sake of size, we can't ship every sig lib by default. Here's what we're currently shipping:

• Ubuntu libc, x86, x86_64 (18.04 and 16.04)
• Ubuntu libgcc, x86, x86_64 (18.04 and 16.04)

In the future, we would like to have these:

Windows:

• msvcrt: x86, x86_64

Unfortunately, we can't generate Windows signature libraries right now as we don't don't support COFF relocations yet (ref #1410 #1376 #1956).