annobin requires annobin to compile

annobin requires the annobin plugin to be present to compile. This makes it difficult to add the annobin plugin to a custom build of a compiler. I tried building annobin from the source RPM, for my own build of gcc 11.2.0. After many go-around with installing necessary packages, I got to:

cc1: fatal error: inaccessible plugin file /usr/sup/gcc-11.2.0/lib/gcc/x86_64-pc-linux-gnu/11.2.0/plugin/annobin.so expanded from short plugin name annobin: No such file or directory

...which is the exact thing I wanted to fix.

Is there any way to get a source release of annobin, that doesn't require annobin to already be present to build it? (I'd also like a source release that doesn't require me to have automake installed, but that at least I can work around.)