DOC: Mention Configure consistently

[openssl.git] / Configure

diff --git a/Configure b/Configure
index a56e085adbda2d5acb7b5f3312639d238659a3af..3129a23f9de9651264b005f4ddc7fb4bd7699c7e 100755 (executable)
--- a/Configure
+++ b/Configure
@@ -20,6 +20,7 @@ use File::Path qw/mkpath/;
 use OpenSSL::fallback "$FindBin::Bin/external/perl/MODULES.txt";
 use OpenSSL::Glob;
 use OpenSSL::Template;
+use OpenSSL::config;
 
 # see INSTALL.md for instructions.
 
@@ -204,6 +205,11 @@ my $apitable = {
     "0.9.8" =>   908,
 };
 
+# For OpenSSL::config::get_platform
+my %guess_opts = ();
+
+my $dryrun = 0;
+
 our %table = ();
 our %config = ();
 our %withargs = ();
@@ -608,8 +614,6 @@ while ((my $first, my $second) = (shift @list, shift @list)) {
 # To remove something from %disabled, use "enable-foo".
 # For symmetry, "disable-foo" is a synonym for "no-foo".
 
-&usage if ($#ARGV < 0);
-
 # For the "make variables" CPPINCLUDES and CPPDEFINES, we support lists with
 # platform specific list separators.  Users from those platforms should
 # recognise those separators from how you set up the PATH to find executables.
@@ -835,6 +839,22 @@ while (@argvcopy)
                 # No longer an automatic choice
                 $auto_threads = 0 if ($1 eq "threads");
                 }
+        elsif (/^-d$/)          # From older 'config'
+                {
+                $config{build_type} = "debug";
+                }
+        elsif (/^-v$/)          # From older 'config'
+                {
+                $guess_opts{verbose} = 1;
+                }
+        elsif (/^-w$/)          # From older 'config'
+                {
+                $guess_opts{nowait} = 1;
+                }
+        elsif (/^-t$/)          # From older 'config'
+                {
+                $dryrun = 1;
+                }
         elsif (/^--strict-warnings$/)
                 {
                 # Pretend that our strict flags is a C flag, and replace it
@@ -1068,6 +1088,23 @@ if (grep { /-rpath\b/ } ($user{LDFLAGS} ? @{$user{LDFLAGS}} : ())
         "***** any of asan, msan or ubsan\n";
 }
 
+# If no target was given, try guessing.
+unless ($target) {
+    my %system_config = OpenSSL::config::get_platform(%guess_opts, %user);
+
+    # The $system_config{disable} is used to populate %disabled with
+    # entries that aren't already there.
+    foreach ( @{$system_config{disable} // []} ) {
+        $disabled{$_} = 'system' unless defined $disabled{$_};
+    }
+    delete $system_config{disable};
+
+    # Override config entries with stuff from the guesser.
+    # It's assumed that this really is nothing new.
+    %config = ( %config, %system_config );
+    $target = $system_config{target};
+}
+
 sub disable {
     my $disable_type = shift;
 
@@ -1185,6 +1222,8 @@ if ($target) {
 
 &usage unless $target;
 
+exit 0 if $dryrun;              # From older 'config'
+
 $config{target} = $target;
 my %target = resolve_config($target);
 
@@ -3011,7 +3050,6 @@ sub usage
                         }
                 print STDERR $i . " ";
                 }
-        print STDERR "\n\nNOTE: If in doubt, on Unix-ish systems use './config'.\n";
         exit(1);
         }