nightlies 20261103

Trunk gcc and clang, built here from upstream source at the commits each asset's provenance.json names. gcc -- the host and every cross target -- is built with C and LTO only and --enable-checking=yes,extra,rtl, using Ubuntu 24.04's own compiler for the host and its cross binutils and libc packages for each target's tools and sysroot. clang is built Release with LLVM_ENABLE_ASSERTIONS=ON and compiler-rt, and ships the lld built alongside it (bin/ld.lld, used by -fuse-ld=lld). manifest.json indexes the release. gcc and binutils are GPLv3 -- the source of a gcc build is the gcc git tree at its gcc_revision (https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=<gcc_revision>), each gcc archive carries build.log.bz2 with its configure/build details and the share/licenses/ tree for the packages it consumed. clang is Apache-2.0 -- LLVM's LICENSE.TXT ships inside each clang archive.