Fix crash and latest update.

Configurations/unix-Makefile.tmpl

@@ -142,6 +142,7 @@ LIBDIR={- our $libdir = $config{libdir};
 libdir={- file_name_is_absolute($libdir)
           ? $libdir : '$(INSTALLTOP)/$(LIBDIR)' -}
 ENGINESDIR=$(libdir)/engines-{- $sover_dirname -}
+MODULESDIR=$(libdir)/ossl-modules
 
 # Convenience variable for those who want to set the rpath in shared
 # libraries and applications
@@ -238,7 +239,8 @@ LIB_CPPFLAGS={- our $lib_cppflags =
                 join(' ', $lib_cppflags,
                           (map { '-D'.$_ }
                                'OPENSSLDIR="\"$(OPENSSLDIR)\""',
-                               'ENGINESDIR="\"$(ENGINESDIR)\""'),
+                               'ENGINESDIR="\"$(ENGINESDIR)\""',
+                               'MODULESDIR="\"$(MODULESDIR)\""'),
                           '$(CNF_CPPFLAGS)', '$(CPPFLAGS)') -}
 LIB_CFLAGS={- join(' ', $target{lib_cflags} || (),
                         $target{shared_cflag} || (),