chacha/asm/chacha-ppc.pl: fix typo.
[openssl.git] / Configure
index 57a57bd330ad9b26d1dc5107e10c0348714ec3b8..e57ff602f9a272e1598c8ec275d366e2c47ccdc0 100755 (executable)
--- a/Configure
+++ b/Configure
@@ -57,6 +57,9 @@ my $usage="Usage: Configure [no-<cipher> ...] [enable-<cipher> ...] [-Dxxx] [-lx
 #              library and will be loaded in run-time by the OpenSSL library.
 # sctp          include SCTP support
 # 386           generate 80386 code
+# enable-weak-ssl-ciphers
+#               Enable weak ciphers that are disabled by default. This currently
+#               only includes RC4 based ciphers.
 # no-sse2      disables IA-32 SSE2 code, above option implies no-sse2
 # no-<cipher>   build without specified algorithm (rsa, idea, rc5, ...)
 # -<xxx> +<xxx> compiler options are passed through
@@ -124,7 +127,7 @@ my $strict_warnings = 0;
 # which has to be accompanied by explicit -D_THREAD_SAFE and
 # sometimes -D_REENTRANT. FreeBSD 5.x expands it as -lc_r, which
 # seems to be sufficient?
-my $BSDthreads="-pthread -D_THREAD_SAFE -D_REENTRANT";
+our $BSDthreads="-pthread -D_THREAD_SAFE -D_REENTRANT";
 
 #
 # API compability name to version number mapping.
@@ -208,7 +211,7 @@ $config{cross_compile_prefix}="";
 $config{fipslibdir}="/usr/local/ssl/fips-2.0/lib/";
 my $nofipscanistercheck=0;
 $config{baseaddr}="0xFB00000";
-my $threads=0;
+my $auto_threads=1;    # enable threads automatically? true by default
 my $default_ranlib;
 $config{fips}=0;
 
@@ -313,6 +316,7 @@ my @disablables = (
     "ui",
     "unit-test",
     "whirlpool",
+    "weak-ssl-ciphers",
     "zlib",
     "zlib-dynamic",
     );
@@ -330,17 +334,19 @@ my @deprecated_disablables = (
 
 our %disabled = ( # "what"         => "comment"
                  "ec_nistp_64_gcc_128" => "default",
-                 "egd"            => "default",
-                 "md2"            => "default",
-                 "rc5"            => "default",
-                 "sctp"           => "default",
-                 "shared"         => "default",
-                 "ssl-trace"      => "default",
-                 "static-engine"  => "default",
-                 "unit-test"      => "default",
-                 "zlib"           => "default",
-                 "crypto-mdebug"  => "default",
-                 "heartbeats"     => "default",
+                 "egd"                 => "default",
+                 "md2"                 => "default",
+                 "rc5"                 => "default",
+                 "sctp"                => "default",
+                 "shared"              => "default",
+                 "ssl-trace"           => "default",
+                 "static-engine"       => "default",
+                 "unit-test"           => "default",
+                 "weak-ssl-ciphers"    => "default",
+                 "zlib"                => "default",
+                 "zlib-dynamic"        => "default",
+                 "crypto-mdebug"       => "default",
+                 "heartbeats"          => "default",
                );
 
 # Note: => pair form used for aesthetics, not to truly make a hash table
@@ -438,7 +444,7 @@ $config{openssl_other_defines}=[];
 my $libs="";
 my $target="";
 $config{options}="";
-my $build_prefix = "release_";
+$config{build_type} = "release";
 
 my @argvcopy=@ARGV;
 
@@ -569,6 +575,8 @@ foreach (@argvcopy)
                         {
                         $disabled{$1} = "option";
                         }
+               # No longer an automatic choice
+               $auto_threads = 0 if ($1 eq "threads");
                }
        elsif (/^enable-(.+)$/)
                {
@@ -580,10 +588,15 @@ foreach (@argvcopy)
                         {
                         delete $disabled{"dynamic-engine"};
                         }
+                elsif ($1 eq "zlib-dynamic")
+                        {
+                        delete $disabled{"zlib"};
+                        }
                my $algo = $1;
                delete $disabled{$algo};
 
-               $threads = 1 if ($algo eq "threads");
+               # No longer an automatic choice
+               $auto_threads = 0 if ($1 eq "threads");
                }
        elsif (/^--strict-warnings$/)
                {
@@ -591,11 +604,11 @@ foreach (@argvcopy)
                }
        elsif (/^--debug$/)
                {
-               $build_prefix = "debug_";
+               $config{build_type} = "debug";
                }
        elsif (/^--release$/)
                {
-               $build_prefix = "release_";
+               $config{build_type} = "release";
                }
        elsif (/^386$/)
                { $config{processor}=386; }
@@ -826,7 +839,7 @@ print "Configuring for $target\n";
 # Support for legacy targets having a name starting with 'debug-'
 my ($d, $t) = $target =~ m/^(debug-)?(.*)$/;
 if ($d) {
-    $build_prefix = "debug_";
+    $config{build_type} = "debug";
 
     # If we do not find debug-foo in the table, the target is set to foo.
     if (!$table{$target}) {
@@ -866,20 +879,10 @@ $target{nm} =      $ENV{'NM'}      || $target{nm}      || "nm";
 # For cflags, lflags, plib_lflags, ex_libs and defines, add the debug_
 # or release_ attributes.
 # Do it in such a way that no spurious space is appended (hence the grep).
-$config{defines} = [ @{$target{defines}},
-                     @{$target{$build_prefix."defines"}} ];
-$config{cflags} = join(" ",
-                      grep { $_ ne "" } ($target{cflags},
-                                         $target{$build_prefix."cflags"}));
-$config{lflags} = join(" ",
-                      grep { $_ ne "" } ($target{lflags},
-                                         $target{$build_prefix."lflags"}));
-$config{plib_lflags} = join(" ",
-                           grep { $_  ne "" } ($target{plib_lflags},
-                                               $target{$build_prefix."plib_lflags"}));
-$config{ex_libs} = join(" ",
-                       grep { $_  ne "" } ($target{ex_libs},
-                                           $target{$build_prefix."ex_libs"}));
+$config{defines} = [];
+$config{cflags} = "";
+$config{ex_libs} = "";
+$config{shared_ldflag} = "";
 
 # Make sure build_scheme is consistent.
 $target{build_scheme} = [ $target{build_scheme} ]
@@ -901,7 +904,7 @@ my ($builder, $builder_platform, @builder_opts) =
 if ($target =~ /^mingw/ && `$target{cc} --target-help 2>&1` =~ m/-mno-cygwin/m)
        {
        $config{cflags} .= " -mno-cygwin";
-       $target{shared_ldflag} .= " -mno-cygwin";
+       $config{shared_ldflag} .= " -mno-cygwin";
        }
 
 if ($target =~ /linux.*-mips/ && !$disabled{asm} && $user_cflags !~ /-m(ips|arch=)/) {
@@ -925,60 +928,60 @@ if (!$disabled{dso} && $target{dso_scheme} ne "")
        $target{dso_scheme} =~ tr/[a-z]/[A-Z]/;
        if ($target{dso_scheme} eq "DLFCN")
                {
-               $config{defines} = [ "DSO_DLFCN", "HAVE_DLFCN_H",
-                                    @{$config{defines}} ]
+               unshift @{$config{defines}}, "DSO_DLFCN", "HAVE_DLFCN_H";
                }
        elsif ($target{dso_scheme} eq "DLFCN_NO_H")
                {
-               $config{defines} = [ "DSO_DLFCN", @{$config{defines}} ]
+               unshift @{$config{defines}}, "DSO_DLFCN";
                }
        else
                {
-               $config{defines} = [ "DSO_$target{dso_scheme}",
-                                    @{$config{defines}} ]
+               unshift @{$config{defines}}, "DSO_$target{dso_scheme}";
                }
        }
 
-my $thread_cflags = "";
-my @thread_defines;
-if ($target{thread_cflag} ne "(unknown)" && !$disabled{threads})
-       {
-       # If we know how to do it, support threads by default.
-       $threads = 1;
-       }
-if ($target{thread_cflag} eq "(unknown)" && $threads)
-       {
-       # If the user asked for "threads", [s]he is also expected to
-       # provide any system-dependent compiler options that are
-       # necessary.
-       if ($no_user_cflags && $no_user_defines)
-               {
-               print "You asked for multi-threading support, but didn't\n";
-               print "provide any system-specific compiler options\n";
-               exit(1);
-               }
-       push @thread_defines, "OPENSSL_THREADS";
-       }
-else
-       {
-       $thread_cflags=" $target{thread_cflag}";
-       push @thread_defines, @{$target{thread_defines}}, "OPENSSL_THREADS";
-       }
-
 $config{ex_libs}="$libs$config{ex_libs}" if ($libs ne "");
 
 if ($disabled{asm})
        {
-       @{$config{defines}} = grep !/^[BL]_ENDIAN$/, @{$config{defines}}
-           if ($config{fips});
+       if ($config{fips})
+               {
+               @{$config{defines}} = grep !/^[BL]_ENDIAN$/, @{$config{defines}};
+               @{$target{defines}} = grep !/^[BL]_ENDIAN$/, @{$target{defines}};
+               }
        }
 
-if ($threads)
-       {
-       $config{cflags} = "$thread_cflags $config{cflags}" if $thread_cflags;
-       push @{$config{defines}}, @thread_defines;
-       push @{$config{openssl_thread_defines}}, @thread_defines;
-       }
+# If threads aren't disabled, check how possible they are
+unless ($disabled{threads}) {
+    if ($auto_threads) {
+        # Enabled by default, disable it forcibly if unavailable
+        if ($target{thread_scheme} eq "(unknown)") {
+            $disabled{threads} = "unavailable";
+        }
+    } else {
+        # The user chose to enable threads explicitely, let's see
+        # if there's a chance that's possible
+        if ($target{thread_scheme} eq "(unknown)") {
+            # If the user asked for "threads" and we don't have internal
+            # knowledge how to do it, [s]he is expected to provide any
+            # system-dependent compiler options that are necessary.  We
+            # can't truly check that the given options are correct, but
+            # we expect the user to know what [s]He is doing.
+            if ($no_user_cflags && $no_user_defines) {
+                die "You asked for multi-threading support, but didn't\n"
+                    ,"provide any system-specific compiler options\n";
+            }
+        }
+    }
+}
+
+# If threads still aren't disabled, add a C macro to ensure the source
+# code knows about it.  Any other flag is taken care of by the configs.
+unless($disabled{threads}) {
+    foreach (("defines", "openssl_thread_defines")) {
+        push @{$config{$_}}, "OPENSSL_THREADS";
+    }
+}
 
 # With "deprecated" disable all deprecated features.
 if (defined($disabled{"deprecated"})) {
@@ -1066,7 +1069,7 @@ unless ($disabled{asm}) {
         if ($config{processor} eq "386") {
            $target{wp_asm_src}=$table{DEFAULTS}->{wp_asm_src};
        } elsif (!$disabled{"whirlpool"}) {
-           $config{cflags}.=" -DWHIRLPOOL_ASM";
+           push @{$config{defines}}, "WHIRLPOOL_ASM";
        }
     }
     if ($target{modes_asm_src} =~ /ghash-/) {
@@ -1680,11 +1683,11 @@ close(OUT);
 
 print "IsMK1MF       =", ($builder eq "mk1mf" ? "yes" : "no"), "\n";
 print "CC            =$target{cc}\n";
-print "CFLAG         =$config{cflags}\n";
-print "DEFINES       =",join(" ", @{$config{defines}}),"\n";
-print "LFLAG         =$config{lflags}\n";
-print "PLIB_LFLAG    =$config{plib_lflags}\n";
-print "EX_LIBS       =$config{ex_libs}\n";
+print "CFLAG         =$target{cflags} $config{cflags}\n";
+print "DEFINES       =",join(" ", @{$target{defines}}, @{$config{defines}}),"\n";
+print "LFLAG         =$target{lflags}\n";
+print "PLIB_LFLAG    =$target{plib_lflags}\n";
+print "EX_LIBS       =$target{ex_libs} $config{ex_libs}\n";
 print "APPS_OBJ      =$target{apps_obj}\n";
 print "CPUID_OBJ     =$target{cpuid_obj}\n";
 print "UPLINK_OBJ    =$target{uplink_obj}\n";
@@ -1844,7 +1847,7 @@ print <<"EOF";
 Configured for $target.
 EOF
 
-print <<"EOF" if (!$disabled{threads} && !$threads);
+print <<"EOF" if ($disabled{threads} eq "unavailable");
 
 The library could not be configured for supporting multi-threaded
 applications as the compiler options required on this system are not known.
@@ -1914,6 +1917,7 @@ sub asm {
     }
 }
 
+our $add_called = 0;
 # Helper function to implement adding values to already existing configuration
 # values.  It handles elements that are ARRAYs, CODEs and scalars
 sub _add {
@@ -1942,6 +1946,8 @@ sub _add {
            }
     } (@_);
 
+    $add_called = 1;
+
     if ($found_array) {
        [ @values ];
     } else {
@@ -2010,6 +2016,8 @@ sub resolve_config {
     my $target = shift;
     my @breadcrumbs = @_;
 
+    my $extra_checks = defined($ENV{CONFIGURE_EXTRA_CHECKS});
+
     if (grep { $_ eq $target } @breadcrumbs) {
        die "inherit_from loop!  target backtrace:\n  "
            ,$target,"\n  ",join("\n  ", @breadcrumbs),"\n";
@@ -2072,6 +2080,8 @@ sub resolve_config {
        my $target    = shift;
        my $entry     = shift;
 
+        $add_called = 0;
+
         while(ref($object) eq "CODE") {
             $object = $object->(@$inherited);
         }
@@ -2079,6 +2089,7 @@ sub resolve_config {
             return ();
         }
         elsif (ref($object) eq "ARRAY") {
+            local $add_called;  # To make sure recursive calls don't affect it
             return [ map { process_values($_, $inherited, $target, $entry) }
                      @$object ];
         } elsif (ref($object) eq "") {
@@ -2090,6 +2101,7 @@ sub resolve_config {
     }
 
     foreach (sort keys %all_keys) {
+        my $previous = $combined_inheritance{$_};
 
        # Current target doesn't have a value for the current key?
        # Assign it the default combiner, the rest of this loop body
@@ -2104,6 +2116,10 @@ sub resolve_config {
         unless(defined($table{$target}->{$_})) {
             delete $table{$target}->{$_};
         }
+        if ($extra_checks &&
+            $previous && !($add_called ||  $previous ~~ $table{$target}->{$_})) {
+            warn "$_ got replaced in $target\n";
+        }
     }
 
     # Finally done, return the result.
@@ -2178,22 +2194,11 @@ sub print_table_entry
        "cc",
        "cflags",
        "defines",
-       "debug_cflags",
-       "debug_defines",
-       "release_cflags",
-       "release_defines",
-       "thread_cflag",
        "unistd",
        "ld",
        "lflags",
        "plib_lflags",
        "ex_libs",
-       "debug_lflags",
-       "debug_plib_lflags",
-       "debug_ex_libs",
-       "release_lflags",
-       "release_plib_lflags",
-       "release_ex_libs",
        "bn_ops",
        "cpuid_obj",
        "bn_obj",
@@ -2211,6 +2216,7 @@ sub print_table_entry
        "cmll_obj",
        "modes_obj",
        "padlock_obj",
+       "thread_scheme",
        "perlasm_scheme",
        "dso_scheme",
        "shared_target",