Coin4 build failure

While trying to update the spec for the CMake change I ran into this for the first time: cd /builddir/build/BUILD/coin-6enkw/x86_64-redhat-linux-gnu/src/base && /usr/bin/g++ -I/builddir/build/BUILD/coin-6enkw/x86_64-redhat-linux-gnu/data -I/builddir/build/BUILD/coin-6enkw/include/Inventor/annex -I/builddir/build/BUILD/coin-6enkw/src -I/builddir/build/BUILD/coin-6enkw/x86_64-redhat-linux-gnu/src -I/builddir/build/BUILD/coin-6enkw/include -I/builddir/build/BUILD/coin-6enkw/x86_64-redhat-linux-gnu/include -O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -DNDEBUG -fPIC -DHAVE_CONFIG_H -DCOIN_INTERNAL -DCOIN_DEBUG=0 -o CMakeFiles/base.dir/dict.cpp.o -c /builddir/build/BUILD/coin-6enkw/src/base/dict.cpp /builddir/build/BUILD/coin-6enkw/src/xml/expat/xmlparse.c:94:3: error: #error You do not have support for any sources of high quality entropy enabled. For end user security, that is probably not what you want. Your options include: * Linux + glibc >=2.25 (getrandom): HAVE_GETRANDOM, * Linux + glibc <2.25 (syscall SYS_getrandom): HAVE_SYSCALL_GETRANDOM, * BSD / macOS >=10.7 (arc4random_buf): HAVE_ARC4RANDOM_BUF, * BSD / macOS <10.7 (arc4random): HAVE_ARC4RANDOM, * libbsd (arc4random_buf): HAVE_ARC4RANDOM_BUF + HAVE_LIBBSD, * libbsd (arc4random): HAVE_ARC4RANDOM + HAVE_LIBBSD, * Linux / BSD / macOS (/dev/urandom): XML_DEV_URANDOM * Windows (RtlGenRandom): _WIN32. If insist on not using any of these, bypass this error by defining XML_POOR_ENTROPY; you have been warned. If you have reasons to patch this detection code away or need changes to the build system, please open a bug. Thank you! 94 | # error \ | ^~~~~ Thoughts? Thanks, Richard