Is assert.h missing from the standard headers? [solved]

Hello,

I the process or trying to build a WebAssembly binary toolkit (WABT) I discovered that assert.h was missing. GCC8 threw warnings but compiled without it. Clang is a bit more picky. Looking at the OS sources I could find cpp/cassert but it only loads assert.h which couldn’t be found.

edit:

Found it in the posix directory.