--- configure.stock	2022-03-05 09:38:49.050584116 -0500
+++ configure	2022-03-05 09:43:00.813736323 -0500
@@ -42635,21 +42635,25 @@
       *-hp-hpux*)
                   USE_THREADS_POSIX=""
          ;;
-      *-ibm-aix*)
-                  COMPILER_VERSION=`"$CC" -qversion 2>/dev/null`
-         if test x"$COMPILER_VERSION" = "x"; then
-           CFLAGS="$CFLAGS -pthread"
-         else
-           CFLAGS="$CFLAGS -qthreaded"
-         fi
-         ;;
       *)
-         CFLAGS="$CFLAGS -pthread"
          ;;
       esac
 
             if test "$USE_THREADS_POSIX" != "1"
       then
+        case $host in
+        *-ibm-aix*)
+                      COMPILER_VERSION=`"$CC" -qversion 2>/dev/null`
+           if test x"$COMPILER_VERSION" = "x"; then
+             CFLAGS="$CFLAGS -pthread"
+           else
+             CFLAGS="$CFLAGS -qthreaded"
+           fi
+           ;;
+        *)
+           CFLAGS="$CFLAGS -pthread"
+           ;;
+        esac
         # assign PTHREAD for pkg-config use
         PTHREAD=" -pthread"
         { $as_echo "$as_me:${as_lineno-$LINENO}: checking for pthread_create in -lpthread" >&5