support --with-arch=x86_64h

Recent apple machines describe themselves being x86_64h.  That
architecture is somehow supported by their C compiler and at least
by recent clang.  However config.sub does not know that fact so
making universal binary targeting it is rejected by the program.

Why not skip the check by config.sub.  [fix GH-1971]



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64905 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

configure.ac

@@ -3687,7 +3687,7 @@ AS_IF([test "${universal_binary-no}" = yes ], [
 	for archs in ${universal_archnames}; do
 	    cpu=`echo $archs | sed 's/.*=//'`
 	    archs=`echo $archs | sed 's/=.*//'`
-	    RUBY_DEFINE_IF([defined __${archs}__], RUBY_PLATFORM_CPU, ["${cpu}"])
+	    RUBY_DEFINE_IF([defined __${archs}__ &&! defined RUBY_PLATFORM_CPU], RUBY_PLATFORM_CPU, ["${cpu}"])
 	done
     ])
     ints='long int short'

tool/m4/ruby_universal_arch.m4

@@ -14,10 +14,7 @@ AS_IF([test ${target_archs+set}], [
     for archs in $target_archs
     do
 	AS_CASE([",$universal_binary,"],[*",$archs,"*], [],[
-	    cpu=`$SHELL "$ac_aux_dir/config.sub" "${archs}-${target_os}" 2>&1` || {
-	        AC_MSG_RESULT([failed])
-		AC_MSG_ERROR([$cpu])
-	    }
+	    cpu=$archs
 	    cpu=`echo $cpu | sed 's/-.*-.*//'`
 	    universal_binary="${universal_binary+$universal_binary,}$cpu"
 	    universal_archnames="${universal_archnames} ${archs}=${cpu}"