Configure: handle undefined shared_target.

Some very basic config targets don't defined the 'shared_target'
attribute at all.  This wasn't handled well enough in Configure.
This also cleans away an explicit reference to the ossltest engine in
Configurations/unix-Makefile.tmpl, which isn't necessary since the
build.info attributes were added.

Fixes openssl/web#197

Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/13031)

1 files changed, 2 insertions, 2 deletions

diff --git a/Configure b/Configure
index 6219e2e37e..dfad3fe7a5 100755
--- a/Configure
+++ b/Configure
@@ -579,7 +579,7 @@ my @disable_cascades = (
     # or modules.
     "pic"               => [ "shared", "module" ],
 
-    "module"            => [ "fips" ],
+    "module"            => [ "fips", "dso" ],
 
     "engine"            => [ grep /eng$/, @disablables ],
     "hw"                => [ "padlockeng" ],
@@ -1444,7 +1444,7 @@ unless($disabled{threads}) {
 }
 
 my $no_shared_warn=0;
-if ($target{shared_target} eq "")
+if (($target{shared_target} // '') eq "")
         {
         $no_shared_warn = 1
             if (!$disabled{shared} || !$disabled{"dynamic-engine"});