https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79403
--- Comment #3 from Dominik Vogt <vogt at linux dot vnet.ibm.com> --- The files are symlinks in the build tree, mode 640 in the source tree (like everything else) and are installed with "cp -p" which explains the broken permissions. Most other things are installed "install -m 644". > I'm a little skeptical, nothing has changed for years and this apparently > works for everyone else. Perhaps because few people install a system Ada compiler from sources.