--- configure.orig	2020-11-28 11:54:35 UTC
+++ configure
@@ -5696,10 +5696,10 @@ host_os3=`echo $host_os2 | sed 's/^\([^0-9]*\)[0-9]*$/
 host_cpu1=`echo $host_cpu | sed 's/\./_/g'`
 host_vendor1=`echo $host_vendor | sed 's/\./_/g'`
 HOST_ID="-DCPU_$host_cpu1 -DVENDOR_$host_vendor1 -DOS_$host_os1"
-if [ $host_os1 != $host_os2 ] ; then
+if [ "$host_os1" != "$host_os2" ] ; then
 	HOST_ID="$HOST_ID -DOS_$host_os2"
 fi
-if [ $host_os1 != $host_os3 ] && [ $host_os2 != $host_os3 ] ; then
+if [ "$host_os1" != "$host_os3" ] && [ "$host_os2" != "$host_os3" ] ; then
 	HOST_ID="$HOST_ID -DOS_$host_os3"
 fi
 
@@ -5725,39 +5725,39 @@ if [ "X$GCC" = "Xyes" ] ; then
     esac
     CFLAGS="$CFLAGS $Wall"
 else
-    if [ $host_os3 = hpux ] ; then
+    if [ "$host_os3" = hpux ] ; then
 	    CPPFLAGS="$CPPFLAGS -Ae"
     fi
 
-    if [ $host_os3 = xenix ] ; then
+    if [ "$host_os3" = xenix ] ; then
 	    CFLAGS="$CFLAGS -M2e"
     fi
 fi
 
-if [ $host_os3 = hpux ] ; then
+if [ "$host_os3" = hpux ] ; then
 	    LDFLAGS="$LDFLAGS -z"
 fi
 
-if [ $host_os3 = xenix ] ; then
+if [ "$host_os3" = xenix ] ; then
     LDFLAGS="$LDFLAGS -M2e -i -f 5000"
 fi
 
-if [ $host_os2 = sysv4 ] ; then
+if [ "$host_os2" = sysv4 ] ; then
     SHLIB="-lc -L/usr/ucblib -lucb"
 else
     SHLIB=""
 fi
 
-if [ $host_os3 = isc ] ; then
+if [ "$host_os3" = isc ] ; then
     CFLAGS="$CFLAGS -D_SYSV3"
     SHLIB="-lc_s"
 fi
 
-if [ $host_os3 = solaris -a x$newVold = xxyes ] ; then
+if [ "$host_os3" = solaris -a x$newVold = xxyes ] ; then
     SHLIB="$SHLIB -s -lvolmgt"
 fi
 
-if [ $host_os3 = nextstep ] ; then
+if [ "$host_os3" = nextstep ] ; then
     CFLAGS="$CFLAGS -DBSD"
     SHLIB=""
 fi