The Sourceforge bug tracker is disabled, so we don't have a public reference point for submitting issues, and I'm filing this bug for tracking purposes. Apart from historic autoconf issues, there is a broken configure.in line that creates a test that always fails, but happens to be interpreted by GCC as an implicit function declaration. AC_CHECK_LIB(util, [LIBUTIL=-lutil])
Created attachment 1927115 [details] rootsh-configure-c99.patch