Recognize macOS 11 and later, remove inaccurate comment, and simplify. https://debbugs.gnu.org/cgi/bugreport.cgi?bug=44605 --- configure.orig 2023-07-21 00:49:39.000000000 -0500 +++ configure 2023-07-21 00:49:45.000000000 -0500 @@ -7207,16 +7207,11 @@ _lt_dar_allow_undefined='${wl}-undefined ${wl}suppress' ;; darwin1.*) _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;; - darwin*) # darwin 5.x on - # if running on 10.5 or later, the deployment target defaults - # to the OS version, if on x86, and 10.4, the deployment - # target defaults to 10.4. Don't you love it? - case ${MACOSX_DEPLOYMENT_TARGET-10.0},$host in - 10.0,*86*-darwin8*|10.0,*-darwin[91]*) - _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;; - 10.[012]*) + darwin*) + case ${MACOSX_DEPLOYMENT_TARGET},$host in + 10.[012],*|,*powerpc*-darwin[5-8]*) _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;; - 10.*) + *) _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;; esac ;;