The dependency on gcc-10 appears to come from the file /usr/lib/R/bin/libtool: sys_lib_search_path_spec="/usr/lib/gcc/hppa-linux-gnu/10 /usr/lib/hppa-linux-gnu /usr/lib /lib/hppa-linux-gnu /lib " Rebuilding r-base with gcc-11. Dave -- John David Anglin dave.anglin at bell.net