diff --git a/README_d/ChangeLog b/README_d/ChangeLog
index 3289dfd9..61b517d2 100644
--- a/README_d/ChangeLog
+++ b/README_d/ChangeLog
@@ -1,3 +1,7 @@
+2022-11-27         Arnold D. Robbins     <arnold@skeeve.com>
+
+	* README.macosx: Updated.
+
 2022-11-17         Arnold D. Robbins     <arnold@skeeve.com>
 
 	* 5.2.1: Release tar ball made.
diff --git a/README_d/README.macosx b/README_d/README.macosx
index 741cf4da..256a7de2 100644
--- a/README_d/README.macosx
+++ b/README_d/README.macosx
@@ -1,3 +1,12 @@
+Sun 27 Nov 2022 14:54:06 EST
+============================
+
+Building an x86_64 binary on M1 systems was a bad idea. Not all systems
+have Rosetta installed, and there are still ppc and ppc64 systems out
+in the world. See https://trac.macports.org/ticket/66329.
+
+So for now, PMA in enabled for macOS only on x86_64.
+
 Sun 23 Oct 2022 14:24:37 IDT
 ============================
 
diff --git a/configure b/configure
index 84024e9d..b7020b38 100755
--- a/configure
+++ b/configure
@@ -12618,15 +12618,18 @@ else $as_nop
 fi
 
 			;;
-		*darwin*)
-			# 23 October 2022: See README_d/README.macosx for
-			# the details on what's happening here. See also
-			# the manual.
-
-			# Compile as Intel binary all the time, even on M1.
-			CFLAGS="${CFLAGS} -arch x86_64"
-			LDFLAGS="${LDFLAGS} -Xlinker -no_pie"
-			export CFLAGS LDFLAGS
+ 		*darwin*)
+			# 27 November 2022: PMA only works on Intel.
+			case $host in
+			x86_64-*)
+				LDFLAGS="${LDFLAGS} -Xlinker -no_pie"
+				export LDFLAGS
+				;;
+			*)
+				# disable on all other macOS systems
+				use_persistent_malloc=no
+				;;
+			esac
 			;;
 		*cygwin* | *CYGWIN* | *solaris2.11* | freebsd13.* | openbsd7.* )
 			true	# nothing do, exes on these systems are not PIE
diff --git a/extension/configure b/extension/configure
index f6c9394b..6e28f0db 100755
--- a/extension/configure
+++ b/extension/configure
@@ -8832,15 +8832,18 @@ else $as_nop
 fi
 
 			;;
-		*darwin*)
-			# 23 October 2022: See README_d/README.macosx for
-			# the details on what's happening here. See also
-			# the manual.
-
-			# Compile as Intel binary all the time, even on M1.
-			CFLAGS="${CFLAGS} -arch x86_64"
-			LDFLAGS="${LDFLAGS} -Xlinker -no_pie"
-			export CFLAGS LDFLAGS
+ 		*darwin*)
+			# 27 November 2022: PMA only works on Intel.
+			case $host in
+			x86_64-*)
+				LDFLAGS="${LDFLAGS} -Xlinker -no_pie"
+				export LDFLAGS
+				;;
+			*)
+				# disable on all other macOS systems
+				use_persistent_malloc=no
+				;;
+			esac
 			;;
 		*cygwin* | *CYGWIN* | *solaris2.11* | freebsd13.* | openbsd7.* )
 			true	# nothing do, exes on these systems are not PIE
diff --git a/m4/ChangeLog b/m4/ChangeLog
index e2b52353..fb13cf09 100644
--- a/m4/ChangeLog
+++ b/m4/ChangeLog
@@ -1,3 +1,9 @@
+2022-11-27         Arnold D. Robbins     <arnold@skeeve.com>
+
+	* pma.m4: Don't build an x86 binary on non-x86 macOS systems.
+	See https://trac.macports.org/ticket/66329. Thanks to
+	Marius Schamschula <lists@schamschula.com> for the report.
+
 2022-11-17         Arnold D. Robbins     <arnold@skeeve.com>
 
 	* 5.2.1: Release tar ball made.
diff --git a/m4/pma.m4 b/m4/pma.m4
index 00f29722..c0535a26 100644
--- a/m4/pma.m4
+++ b/m4/pma.m4
@@ -23,15 +23,18 @@ then
 				[LDFLAGS="${LDFLAGS} -no-pie"
 				export LDFLAGS])
 			;;
-		*darwin*)
-			# 23 October 2022: See README_d/README.macosx for
-			# the details on what's happening here. See also
-			# the manual.
-
-			# Compile as Intel binary all the time, even on M1.
-			CFLAGS="${CFLAGS} -arch x86_64"
-			LDFLAGS="${LDFLAGS} -Xlinker -no_pie"
-			export CFLAGS LDFLAGS
+ 		*darwin*)
+			# 27 November 2022: PMA only works on Intel.
+			case $host in
+			x86_64-*)
+				LDFLAGS="${LDFLAGS} -Xlinker -no_pie"
+				export LDFLAGS
+				;;
+			*)
+				# disable on all other macOS systems
+				use_persistent_malloc=no
+				;;
+			esac
 			;;
 		*cygwin* | *CYGWIN* | *solaris2.11* | freebsd13.* | openbsd7.* )
 			true	# nothing do, exes on these systems are not PIE