diff -urNp -x '*.orig' httpd-2.4.46.org/support/apxs.in httpd-2.4.46/support/apxs.in
--- httpd-2.4.46.org/support/apxs.in	2020-03-20 14:00:44.000000000 +0100
+++ httpd-2.4.46/support/apxs.in	2021-06-16 09:20:17.513003551 +0200
@@ -45,6 +45,7 @@ my $CFG_PREFIX     = $prefix;
 my $exec_prefix    = get_vars("exec_prefix");
 my $datadir        = get_vars("datadir");
 my $localstatedir  = get_vars("localstatedir");
+my $libdir	   = get_vars("libdir");
 my $CFG_TARGET     = get_vars("progname");
 my $CFG_SYSCONFDIR = get_vars("sysconfdir");
 my $CFG_CFLAGS     = join ' ', map { get_vars($_) }
@@ -56,6 +57,7 @@ my $CFG_INCLUDEDIR = eval qq("$includedi
 my $CFG_CC         = get_vars("CC");
 my $libexecdir     = $destdir . get_vars("libexecdir");
 my $CFG_LIBEXECDIR = eval qq("$libexecdir");
+my $CFG_DESTDIR    = '';
 my $sbindir        = get_vars("sbindir");
 my $CFG_SBINDIR    = eval qq("$sbindir");
 my $ltflags        = $ENV{'LTFLAGS'};
@@ -183,7 +185,7 @@ if (@opt_S) {
 	    my ($val) = $2;
 	    my $oldval = eval "\$CFG_$var";
 
-	    unless ($var and $oldval) {
+	    unless ($var and defined $oldval) {
 		print STDERR "apxs:Error: no config variable $var\n";
 		&usage;
 	    }
@@ -512,8 +514,8 @@ if ($opt_i or $opt_e) {
         $t =~ s|\.[^./\\]+$|\.so|;
         if ($opt_i) {
 	    push(@cmds, $destdir . "$installbuilddir/instdso.sh SH_LIBTOOL='" .
-                 "$libtool' $f $CFG_LIBEXECDIR");
-	    push(@cmds, "chmod 755 $CFG_LIBEXECDIR/$t");
+                 "$libtool' $f $CFG_DESTDIR$CFG_LIBEXECDIR");
+	    push(@cmds, "chmod 755 $CFG_DESTDIR$CFG_LIBEXECDIR/$t");
         }
 
         #   determine module symbolname and filename