Mirrors rocky9's curl-based fetching and consistent-libdir goals but
adapted to Debian's own conventions: replaces git clone with curl
tarball downloads (matching rocky9's URLs), drops sha256sum checks, and
installs every vendored library under /usr/local/lib/x86_64-linux-gnu
instead of rocky9's lib64.
lib64 was tried first but abandoned: on Debian, CMake's find_package()
Config-mode search, find_library(), and pkg-config's default search
path all detect /etc/debian_version and never look in lib64 (that's an
RHEL-only default), so cross-package lookups like spdlog finding fmt
or folly's FindLibEvent.cmake kept failing. lib/x86_64-linux-gnu is
Debian's native multiarch path and is found by all three mechanisms
with no extra CMAKE_PREFIX_PATH/PKG_CONFIG_PATH workarounds, verified
by building the full image end to end.
libevent-lib64-install.patch is renamed and retargeted at
lib/x86_64-linux-gnu since libevent hardcodes "lib" in its CMake
install rules with no override flag. CacheLib keeps building its
default interface/cachebench targets (no patch needed here, unlike
rocky9).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01UV2yJRkL6CnChX3D2zhoXH
