Produce buildinf.h on Windows the same way as on Unix
[openssl.git] / Configure
index f34444cab15008328e5ce6b1056a3a59d9f73ea6..5afa63dd2a6578f51642fc1b4db487b71f68fe17 100755 (executable)
--- a/Configure
+++ b/Configure
@@ -10,7 +10,8 @@
 require 5.000;
 use strict;
 use File::Basename;
-use File::Spec::Functions;
+use File::Spec::Functions qw/:DEFAULT abs2rel rel2abs/;
+use File::Path qw/mkpath/;
 
 # see INSTALL for instructions.
 
@@ -97,12 +98,8 @@ my $warn_make_depend = 0;
 # This adds backtrace information to the memory leak info.
 my $memleak_devteam_backtrace = "-rdynamic -DCRYPTO_MDEBUG_BACKTRACE";
 
-
 my $strict_warnings = 0;
 
-my $x86_gcc_des="";
-my $x86_gcc_opts="";
-
 # As for $BSDthreads. Idea is to maintain "collective" set of flags,
 # which would cover all BSD flavors. -pthread applies to them all,
 # but is treated differently. OpenBSD expands is as -D_POSIX_THREAD
@@ -143,6 +140,14 @@ sub resolve_config;
 
 # Information collection #############################################
 
+# Unified build supports separate build dir
+my $srcdir = catdir(absolutedir(dirname($0))); # catdir ensures local syntax
+my $blddir = catdir(absolutedir("."));         # catdir ensures local syntax
+my $dofile = abs2rel(catfile($srcdir, "util/dofile.pl"));
+
+$config{sourcedir} = abs2rel($srcdir);
+$config{builddir} = abs2rel($blddir);
+
 # Collect version numbers
 $config{version} = "unknown";
 $config{version_num} = "unknown";
@@ -150,8 +155,7 @@ $config{shlib_version_number} = "unknown";
 $config{shlib_version_history} = "unknown";
 
 collect_information(
-    '<include/openssl/opensslv.h',
-    undef,
+    collect_from_file(catfile($srcdir,'include/openssl/opensslv.h')),
     qr/OPENSSL.VERSION.TEXT.*OpenSSL (\S+) / => sub { $config{version} = $1; },
     qr/OPENSSL.VERSION.NUMBER.*(0x\S+)/             => sub { $config{version_num}=$1 },
     qr/SHLIB_VERSION_NUMBER *"([^"]+)"/             => sub { $config{shlib_version_number}=$1 },
@@ -170,8 +174,7 @@ die "erroneous version information in opensslv.h: ",
 
 # Collect target configurations
 
-my ($vol, $dir, $dummy) = File::Spec->splitpath($0);
-my $pattern = File::Spec->catpath($vol, $dir, "Configurations/*.conf");
+my $pattern = catfile(dirname($0), "Configurations", "*.conf");
 foreach (sort glob($pattern) ) {
     &read_config($_);
 }
@@ -196,7 +199,6 @@ my $zlib=1;      # but "no-zlib" is default
 my $no_rfc3779=0;
 my $no_asm=0;
 my $no_dso=0;
-my $Makefile="Makefile";
 my $default_ranlib;
 $config{fips}=0;
 
@@ -210,7 +212,7 @@ $config{sdirs} = [
     "bn", "ec", "rsa", "dsa", "dh", "dso", "engine",
     "buffer", "bio", "stack", "lhash", "rand", "err",
     "evp", "asn1", "pem", "x509", "x509v3", "conf", "txt_db", "pkcs7", "pkcs12", "comp", "ocsp", "ui",
-    "cms", "ts", "jpake", "srp", "store", "cmac", "ct", "async", "kdf"
+    "cms", "ts", "jpake", "srp", "cmac", "ct", "async", "kdf"
     ];
 
 # Known TLS and DTLS protocols
@@ -224,6 +226,9 @@ my @dtls = qw(dtls1 dtls1_2);
 my @disablables = (
     "aes",
     "asm",
+    "async",
+    "autoalginit",
+    "autoerrinit",
     "bf",
     "camellia",
     "capieng",
@@ -247,6 +252,7 @@ my @disablables = (
     "ecdh",
     "ecdsa",
     "ec_nistp_64_gcc_128",
+    "egd",
     "engine",
     "err",                     # Really???
     "heartbeats",
@@ -288,7 +294,6 @@ my @disablables = (
     "ssl-trace",
     "static-engine",
     "stdio",
-    "store",
     "threads",
     "tls",
     "unit-test",
@@ -313,10 +318,8 @@ my %disabled = ( # "what"         => "comment" [or special keyword "experimental
                 "sctp"           => "default",
                 "shared"         => "default",
                 "ssl-trace"      => "default",
-                "store"          => "experimental",
                 "unit-test"      => "default",
                 "zlib"           => "default",
-                "zlib-dynamic"   => "default",
                 "crypto-mdebug"  => "default",
               );
 my @experimental = ();
@@ -379,13 +382,13 @@ while ((my $first, my $second) = (shift @list, shift @list)) {
     unshift @list, $second;
 }
 
-# Construct the string of what $config{depflags} should look like with the defaults
-# from %disabled above.  (we need this to see if we should advise the user
-# to run "make depend"):
-my $default_depflags = join(" ",
-    map { my $x = $_; $x =~ tr{[a-z]-}{[A-Z]_}; "-DOPENSSL_NO_$x"; }
-    grep { $disabled{$_} !~ /\(no-depflags\)$/ }
-    sort keys %disabled);
+# Construct the string of what $config{depdefines} should look like with
+# the defaults from %disabled above.  (we need this to see if we should
+# advise the user to run "make depend"):
+my @default_depdefines =
+    map { my $x = $_; $x =~ tr{[a-z]-}{[A-Z]_}; "OPENSSL_NO_$x"; }
+    grep { $disabled{$_} !~ /\(no-depdefines\)$/ }
+    sort keys %disabled;
 
 # Explicit "no-..." options will be collected in %disabled along with the defaults.
 # To remove something from %disabled, use "enable-foo" (unless it's experimental).
@@ -400,8 +403,10 @@ my $no_sse2=0;
 
 &usage if ($#ARGV < 0);
 
-my $flags="";
-$config{depflags}="";
+my $user_cflags="";
+my @user_defines=();
+my $unified = 0;
+$config{depdefines}=[];
 $config{openssl_experimental_defines}=[];
 $config{openssl_api_defines}=[];
 $config{openssl_algorithm_defines}=[];
@@ -571,9 +576,15 @@ foreach (@argvcopy)
                }
        elsif (/^[-+]/)
                {
-               if (/^--prefix=(.*)$/)
+               if (/^--unified$/)
+                       {
+                       $unified=1;
+                       }
+               elsif (/^--prefix=(.*)$/)
                        {
                        $config{prefix}=$1;
+                       die "Directory given with --prefix MUST be absolute\n"
+                               unless file_name_is_absolute($config{prefix});
                        }
                elsif (/^--api=(.*)$/)
                        {
@@ -593,11 +604,11 @@ foreach (@argvcopy)
                        }
                elsif (/^--with-zlib-lib=(.*)$/)
                        {
-                       $withargs{"zlib-lib"}=$1;
+                       $withargs{zlib_lib}=$1;
                        }
                elsif (/^--with-zlib-include=(.*)$/)
                        {
-                       $withargs{"zlib-include"}="-I$1";
+                       $withargs{zlib_include}="-I$1";
                        }
                elsif (/^--with-fipslibdir=(.*)$/)
                        {
@@ -619,10 +630,14 @@ foreach (@argvcopy)
                        {
                        $libs.=$_." ";
                        }
+               elsif (/^-D(.*)$/)
+                       {
+                       push @user_defines, $1;
+                       }
                else    # common if (/^[-+]/), just pass down...
                        {
                        $_ =~ s/%([0-9a-f]{1,2})/chr(hex($1))/gei;
-                       $flags.=$_." ";
+                       $user_cflags.=$_." ";
                        }
                }
        elsif ($_ =~ /^([^:]+):(.+)$/)
@@ -737,12 +752,13 @@ foreach (sort (keys %disabled))
                my ($ALGO, $algo);
                ($ALGO = $algo = $_) =~ tr/[\-a-z]/[_A-Z]/;
 
-               if (/^asm$/ || /^err$/ || /^hw$/ || /^hw-/)
+               if (/^asm$/ || /^err$/ || /^hw$/ || /^hw-/ || /^async$/
+                               || /^autoalginit/ || /^autoerrinit/)
                        {
                        push @{$config{openssl_other_defines}}, "OPENSSL_NO_$ALGO";
                        print " OPENSSL_NO_$ALGO";
 
-                       if (/^err$/)    { $flags .= "-DOPENSSL_NO_ERR "; }
+                       if (/^err$/)    { push @user_defines, "OPENSSL_NO_ERR"; }
                        elsif (/^asm$/) { $no_asm = 1; }
                        }
                else
@@ -750,7 +766,7 @@ foreach (sort (keys %disabled))
                        ($ALGO,$algo) = ("RMD160","rmd160") if ($algo eq "ripemd");
 
                        push @{$config{openssl_algorithm_defines}}, "OPENSSL_NO_$ALGO";
-                       $config{depflags} .= " -DOPENSSL_NO_$ALGO";
+                       push @{$config{depdefines}}, "OPENSSL_NO_$ALGO";
                        print " OPENSSL_NO_$ALGO";
 
                        # fix-up crypto/directory name(s)
@@ -765,8 +781,6 @@ foreach (sort (keys %disabled))
        print "\n";
        }
 
-my $exp_cflags = "";
-
 foreach (sort @experimental)
        {
        my $ALGO;
@@ -774,7 +788,6 @@ foreach (sort @experimental)
 
        # opensslconf.h will set OPENSSL_NO_... unless OPENSSL_EXPERIMENTAL_... is defined
        push @{$config{openssl_experimental_defines}}, "OPENSSL_NO_$ALGO";
-       $exp_cflags .= " -DOPENSSL_EXPERIMENTAL_$ALGO";
        }
 
 print "Configuring for $target\n";
@@ -807,22 +820,26 @@ my $make  = $ENV{'MAKE'} || "make";
 $config{cross_compile_prefix} = $ENV{'CROSS_COMPILE'}
     if $config{cross_compile_prefix} eq "";
 
-$config{prefix} = "/usr/local" if !$config{prefix};
-$config{openssldir} = "ssl" if !$config{openssldir};
-$config{openssldir} = catdir($config{prefix}, $config{openssldir})
-    unless file_name_is_absolute($config{openssldir});
-
 # Allow environment CC to override compiler...
 $target{cc} = $ENV{CC} || $target{cc};
 
-# For cflags and lflags, add the debug_ or release_ attributes
+# 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"}));
 
 $target{ranlib} = $ENV{'RANLIB'} || $target{ranlib} || $default_ranlib;
 $target{ar} = $ENV{'AR'} || "ar";
@@ -832,21 +849,21 @@ $target{nm} = "nm";
 $target{build_scheme} = [ $target{build_scheme} ]
     if ref($target{build_scheme}) ne "ARRAY";
 
-# if $config{prefix}/lib$target{multilib} is not an existing directory, then
-# assume that it's not searched by linker automatically, in
-# which case adding $target{multilib} suffix causes more grief than
-# we're ready to tolerate, so don't...
-$target{multilib}="" if !-d "$config{prefix}/lib$target{multilib}";
-
-$config{libdir}="lib$target{multilib}" if $config{libdir} eq "";
-$config{enginesdir}=$config{prefix} . "/" . $config{libdir}  . "/engines";
+###### TO BE REMOVED BEFORE FINAL RELEASE
+######
+###### If the user has chosen --unified, we give it to them.
+if ($target{build_file} eq "Makefile"
+    && $target{build_scheme}->[0] eq "unixmake"
+    && $unified) {
+    $target{build_scheme} = [ "unified", "unix" ];
+}
 
-$config{cflags} .= "$exp_cflags";
+my ($builder, $builder_platform, @builder_opts) =
+    @{$target{build_scheme}};
 
-# '%' in $config{lflags} is used to split flags to "pre-" and post-flags
-my ($pre,$post)=split('%',$config{lflags});
-if (defined($post))    { $config{prelflags}=$pre; $config{lflags}=$post;       }
-else                   { $config{prelflags}="";   $config{lflags}=$pre;        }
+push @{$config{defines}},
+    map { (my $x = $_) =~ s/^OPENSSL_NO_/OPENSSL_EXPERIMENTAL_/; $x }
+        @{$config{openssl_experimental_defines}};
 
 if ($target =~ /^mingw/ && `$target{cc} --target-help 2>&1` !~ m/-mno-cygwin/m)
        {
@@ -854,7 +871,7 @@ if ($target =~ /^mingw/ && `$target{cc} --target-help 2>&1` !~ m/-mno-cygwin/m)
        $target{shared_ldflag} =~ s/-mno-cygwin\s*//;
        }
 
-if ($target =~ /linux.*-mips/ && !$no_asm && $flags !~ /-m(ips|arch=)/) {
+if ($target =~ /linux.*-mips/ && !$no_asm && $user_cflags !~ /-m(ips|arch=)/) {
        # minimally required architecture flags for assembly modules
        $config{cflags}="-mips2 $config{cflags}" if ($target =~ /mips32/);
        $config{cflags}="-mips3 $config{cflags}" if ($target =~ /mips64/);
@@ -862,9 +879,12 @@ if ($target =~ /linux.*-mips/ && !$no_asm && $flags !~ /-m(ips|arch=)/) {
 
 my $no_shared_warn=0;
 my $no_user_cflags=0;
+my $no_user_defines=0;
 
-if ($flags ne "")      { $config{cflags}="$flags$config{cflags}"; }
+if ($user_cflags ne "")        { $config{cflags}="$user_cflags$config{cflags}"; }
 else                   { $no_user_cflags=1;       }
+if (@user_defines)     { $config{defines}=[ @user_defines, @{$config{defines}} ]; }
+else                   { $no_user_defines=1;       }
 
 # The DSO code currently always implements all functions so that no
 # applications will have to worry about that from a compilation point
@@ -872,26 +892,26 @@ else                      { $no_user_cflags=1;       }
 # has support compiled in for them. Currently each method is enabled
 # by a define "DSO_<name>" ... we translate the "dso_scheme" config
 # string entry into using the following logic;
-my $dso_cflags;
 if (!$no_dso && $target{dso_scheme} ne "")
        {
        $target{dso_scheme} =~ tr/[a-z]/[A-Z]/;
        if ($target{dso_scheme} eq "DLFCN")
                {
-               $dso_cflags = "-DDSO_DLFCN -DHAVE_DLFCN_H";
+               $config{defines} = [ "DSO_DLFCN", "HAVE_DLFCN_H",
+                                    @{$config{defines}} ]
                }
        elsif ($target{dso_scheme} eq "DLFCN_NO_H")
                {
-               $dso_cflags = "-DDSO_DLFCN";
+               $config{defines} = [ "DSO_DLFCN", @{$config{defines}} ]
                }
        else
                {
-               $dso_cflags = "-DDSO_$target{dso_scheme}";
+               $config{defines} = [ "DSO_$target{dso_scheme}",
+                                    @{$config{defines}} ]
                }
-       $config{cflags} = "$dso_cflags $config{cflags}";
        }
 
-my $thread_cflags;
+my $thread_cflags = "";
 my @thread_defines;
 if ($target{thread_cflag} ne "(unknown)" && !$no_threads)
        {
@@ -903,60 +923,52 @@ if ($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)
+       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);
                }
-       $thread_cflags="-DOPENSSL_THREADS $config{cflags}" ;
        push @thread_defines, "OPENSSL_THREADS";
        }
 else
        {
-       $thread_cflags="-DOPENSSL_THREADS $target{thread_cflag} $config{cflags}";
-       push @thread_defines, "OPENSSL_THREADS";
-#      my $def;
-#      foreach $def (split ' ',$target{thread_cflag})
-#              {
-#              if ($def =~ s/^-D// && $def !~ /^_/)
-#                      {
-#                      push @thread_defines, "$def";
-#                      }
-#              }
+       $thread_cflags=" $target{thread_cflag}";
+       push @thread_defines, @{$target{thread_defines}}, "OPENSSL_THREADS";
        }
 
-$config{lflags}="$libs$config{lflags}" if ($libs ne "");
+$config{ex_libs}="$libs$config{ex_libs}" if ($libs ne "");
 
 if ($no_asm)
        {
-       $config{cflags}=~s/-D[BL]_ENDIAN//              if ($config{fips});
-       $thread_cflags=~s/-D[BL]_ENDIAN//       if ($config{fips});
+       @{$config{defines}} = grep !/^[BL]_ENDIAN$/, @{$config{defines}}
+           if ($config{fips});
        }
 
 if ($threads)
        {
-       $config{cflags}=$thread_cflags;
+       $config{cflags} = "$thread_cflags $config{cflags}" if $thread_cflags;
+       push @{$config{defines}}, @thread_defines;
        push @{$config{openssl_thread_defines}}, @thread_defines;
        }
 
 if ($zlib)
        {
-       $config{cflags} = "-DZLIB $config{cflags}";
+       push @{$config{defines}}, "ZLIB";
        if (defined($disabled{"zlib-dynamic"}))
                {
-               if (defined($withargs{"zlib-lib"}))
+               if (defined($withargs{zlib_lib}))
                        {
-                       $config{lflags} .= " -L" . $withargs{"zlib-lib"} . " -lz";
+                       $config{ex_libs} .= " -L" . $withargs{zlib_lib} . " -lz";
                        }
                else
                        {
-                       $config{lflags} .= " -lz";
+                       $config{ex_libs} .= " -lz";
                        }
                }
        else
                {
-               $config{cflags} = "-DZLIB_SHARED $config{cflags}";
+               push @{$config{defines}}, "ZLIB_SHARED";
                }
        }
 
@@ -974,11 +986,12 @@ if (!$config{no_shared})
        {
        if ($target{shared_cflag} ne "")
                {
-               $config{cflags} = "$target{shared_cflag} -DOPENSSL_PIC $config{cflags}";
+               push @{$config{defines}}, "OPENSSL_PIC";
+               $config{cflags} = "$target{shared_cflag} $config{cflags}";
                }
        }
 
-if ($target{build_scheme}->[0] ne "mk1mf")
+if ($builder ne "mk1mf")
        {
        # add {no-}static-engine to options to allow mkdef.pl to work without extra arguments
        if ($config{no_shared})
@@ -996,54 +1009,8 @@ if ($target{build_scheme}->[0] ne "mk1mf")
 #
 # Platform fix-ups
 #
-if ($target =~ /-icc$/)        # Intel C compiler
-       {
-       my $iccver=0;
-       if (open(FD,"$target{cc} -V 2>&1 |"))
-               {
-               while(<FD>) { $iccver=$1 if (/Version ([0-9]+)\./); }
-               close(FD);
-               }
-       if ($iccver>=8)
-               {
-               $config{cflags}=~s/-KPIC/-fPIC/;
-               # Eliminate unnecessary dependency from libirc.a. This is
-               # essential for shared library support, as otherwise
-               # apps/openssl can end up in endless loop upon startup...
-               $config{cflags}.=" -Dmemcpy=__builtin_memcpy -Dmemset=__builtin_memset";
-               }
-       if ($iccver>=9)
-               {
-               $config{lflags}.=" -i-static";
-               $config{lflags}=~s/-no_cpprt/-no-cpprt/;
-               }
-       if ($iccver>=10)
-               {
-               $config{lflags}=~s/-i-static/-static-intel/;
-               }
-       if ($iccver>=11)
-               {
-               $config{cflags}.=" -no-intel-extensions";       # disable Cilk
-               $config{lflags}=~s/-no-cpprt/-no-cxxlib/;
-               }
-       }
-
-# Unlike other OSes (like Solaris, Linux, Tru64, IRIX) BSD run-time
-# linkers (tested OpenBSD, NetBSD and FreeBSD) "demand" RPATH set on
-# .so objects. Apparently application RPATH is not global and does
-# not apply to .so linked with other .so. Problem manifests itself
-# when libssl.so fails to load libcrypto.so. One can argue that we
-# should engrave this into Makefile.shared rules or into BSD-* config
-# lines above. Meanwhile let's try to be cautious and pass -rpath to
-# linker only when --prefix is not /usr.
-if ($target =~ /^BSD-/)
-       {
-       $target{shared_ldflag}.=" -Wl,-rpath,\$\$(LIBRPATH)" if ($config{prefix} !~ m|^/usr[/]*$|);
-       }
-
 if ($target{sys_id} ne "")
        {
-       #$config{cflags}="-DOPENSSL_SYS_$target{sys_id} $config{cflags}";
        push @{$config{openssl_sys_defines}}, "OPENSSL_SYS_$target{sys_id}";
        }
 
@@ -1053,74 +1020,77 @@ if ($target{ranlib} eq "")
        }
 
 if (!$no_asm) {
-    $target{cpuid_obj}=$table{BASE}->{cpuid_obj} if ($config{processor} eq "386");
-    $target{cpuid_obj}.=" uplink.o uplink-x86.o" if ($config{cflags} =~ /-DOPENSSL_USE_APPLINK/);
+    $target{cpuid_asm_src}=$table{BASE}->{cpuid_asm_src} if ($config{processor} eq "386");
+    $target{cpuid_asm_src}.=" uplink.c uplink-x86.s" if (grep { $_ eq "OPENSSL_USE_APPLINK"} @{$config{defines}});
 
-    $target{bn_obj} =~ s/\w+-gf2m.o// if (defined($disabled{ec2m}));
+    $target{bn_asm_src} =~ s/\w+-gf2m.c// if (defined($disabled{ec2m}));
 
     # bn-586 is the only one implementing bn_*_part_words
-    $config{cflags}.=" -DOPENSSL_BN_ASM_PART_WORDS" if ($target{bn_obj} =~ /bn-586/);
-    $config{cflags}.=" -DOPENSSL_IA32_SSE2" if (!$no_sse2 && $target{bn_obj} =~ /86/);
+    push @{$config{defines}}, "OPENSSL_BN_ASM_PART_WORDS" if ($target{bn_asm_src} =~ /bn-586/);
+    push @{$config{defines}}, "OPENSSL_IA32_SSE2" if (!$no_sse2 && $target{bn_asm_src} =~ /86/);
 
-    $config{cflags}.=" -DOPENSSL_BN_ASM_MONT" if ($target{bn_obj} =~ /-mont/);
-    $config{cflags}.=" -DOPENSSL_BN_ASM_MONT5" if ($target{bn_obj} =~ /-mont5/);
-    $config{cflags}.=" -DOPENSSL_BN_ASM_GF2m" if ($target{bn_obj} =~ /-gf2m/);
+    push @{$config{defines}}, "OPENSSL_BN_ASM_MONT" if ($target{bn_asm_src} =~ /-mont/);
+    push @{$config{defines}}, "OPENSSL_BN_ASM_MONT5" if ($target{bn_asm_src} =~ /-mont5/);
+    push @{$config{defines}}, "OPENSSL_BN_ASM_GF2m" if ($target{bn_asm_src} =~ /-gf2m/);
 
     if ($config{fips}) {
        push @{$config{openssl_other_defines}}, "OPENSSL_FIPS";
     }
 
-    if ($target{sha1_obj} =~ /\.o$/) {
-       $config{cflags}.=" -DSHA1_ASM"   if ($target{sha1_obj} =~ /sx86/ || $target{sha1_obj} =~ /sha1/);
-       $config{cflags}.=" -DSHA256_ASM" if ($target{sha1_obj} =~ /sha256/);
-       $config{cflags}.=" -DSHA512_ASM" if ($target{sha1_obj} =~ /sha512/);
-       if ($target{sha1_obj} =~ /sse2/) {
-           if ($no_sse2) {
-               $target{sha1_obj} =~ s/\S*sse2\S+//;
-           } elsif ($config{cflags} !~ /OPENSSL_IA32_SSE2/) {
-               $config{cflags}.=" -DOPENSSL_IA32_SSE2";
-           }
-       }
+    if ($target{sha1_asm_src}) {
+       push @{$config{defines}}, "SHA1_ASM"   if ($target{sha1_asm_src} =~ /sx86/ || $target{sha1_asm_src} =~ /sha1/);
+       push @{$config{defines}}, "SHA256_ASM" if ($target{sha1_asm_src} =~ /sha256/);
+       push @{$config{defines}}, "SHA512_ASM" if ($target{sha1_asm_src} =~ /sha512/);
     }
-    if ($target{md5_obj} =~ /\.o$/) {
-       $config{cflags}.=" -DMD5_ASM";
+    if ($target{md5_asm_src}) {
+       push @{$config{defines}}, "MD5_ASM";
     }
-    $target{cast_obj}=$table{BASE}->{cast_obj} if (!$config{no_shared}); # CAST assembler is not PIC
-    if ($target{rmd160_obj} =~ /\.o$/) {
-       $config{cflags}.=" -DRMD160_ASM";
+    $target{cast_asm_src}=$table{BASE}->{cast_asm_src} if (!$config{no_shared}); # CAST assembler is not PIC
+    if ($target{rmd160_asm_src}) {
+       push @{$config{defines}}, "RMD160_ASM";
     }
-    if ($target{aes_obj} =~ /\.o$/) {
-       $config{cflags}.=" -DAES_ASM" if ($target{aes_obj} =~ m/\baes-/);;
-       # aes-ctr.o is not a real file, only indication that assembler
+    if ($target{aes_asm_src}) {
+       push @{$config{defines}}, "AES_ASM" if ($target{aes_asm_src} =~ m/\baes-/);;
+       # aes-ctr.fake is not a real file, only indication that assembler
        # module implements AES_ctr32_encrypt...
-       $config{cflags}.=" -DAES_CTR_ASM" if ($target{aes_obj} =~ s/\s*aes-ctr\.o//);
-       # aes-xts.o indicates presence of AES_xts_[en|de]crypt...
-       $config{cflags}.=" -DAES_XTS_ASM" if ($target{aes_obj} =~ s/\s*aes-xts\.o//);
-       $target{aes_obj} =~ s/\s*(vpaes|aesni)-x86\.o//g if ($no_sse2);
-       $config{cflags}.=" -DVPAES_ASM" if ($target{aes_obj} =~ m/vpaes/);
-       $config{cflags}.=" -DBSAES_ASM" if ($target{aes_obj} =~ m/bsaes/);
+       push @{$config{defines}}, "AES_CTR_ASM" if ($target{aes_asm_src} =~ s/\s*aes-ctr\.fake//);
+       # aes-xts.fake indicates presence of AES_xts_[en|de]crypt...
+       push @{$config{defines}}, "AES_XTS_ASM" if ($target{aes_asm_src} =~ s/\s*aes-xts\.fake//);
+       $target{aes_asm_src} =~ s/\s*(vpaes|aesni)-x86\.s//g if ($no_sse2);
+       push @{$config{defines}}, "VPAES_ASM" if ($target{aes_asm_src} =~ m/vpaes/);
+       push @{$config{defines}}, "BSAES_ASM" if ($target{aes_asm_src} =~ m/bsaes/);
     }
-    if ($target{wp_obj} =~ /mmx/ && $config{processor} eq "386") {
-       $target{wp_obj}=$table{BASE}->{wp_obj};
-    } elsif (!$disabled{"whirlpool"}) {
-       $config{cflags}.=" -DWHIRLPOOL_ASM";
+    if ($target{wp_asm_src} =~ /mmx/) {
+        if ($config{processor} eq "386") {
+           $target{wp_asm_src}=$table{BASE}->{wp_asm_src};
+       } elsif (!$disabled{"whirlpool"}) {
+           $config{cflags}.=" -DWHIRLPOOL_ASM";
+       }
     }
-    if ($target{modes_obj} =~ /ghash-/) {
-       $config{cflags}.=" -DGHASH_ASM";
+    if ($target{modes_asm_src} =~ /ghash-/) {
+       push @{$config{defines}}, "GHASH_ASM";
     }
-    if ($target{ec_obj} =~ /ecp_nistz256/) {
-       $config{cflags}.=" -DECP_NISTZ256_ASM";
+    if ($target{ec_asm_src} =~ /ecp_nistz256/) {
+       push @{$config{defines}}, "ECP_NISTZ256_ASM";
     }
-    if ($target{poly1305_obj} =~ /\.o$/) {
-       $config{cflags}.=" -DPOLY1305_ASM";
+    if ($target{poly1305_asm_src} ne "") {
+       push @{$config{defines}}, "POLY1305_ASM";
     }
 }
 
+# Is the compiler gcc or clang?  $ecc is used below to see if error-checking
+# can be turned on.
 my $ecc = $target{cc};
-$ecc = "clang" if `$target{cc} --version 2>&1` =~ /clang/;
+my $ccpcc = "$config{cross_compile_prefix}$target{cc}";
+$config{makedepprog} = 'makedepend';
+open(PIPE, "$ccpcc --version 2>&1 | head -2 |");
+while ( <PIPE> ) {
+    $config{makedepprog} = $ccpcc if /clang|gcc/;
+    $ecc = "clang" if /clang/;
+    $ecc = "gcc" if /gcc/;
+}
+close(PIPE);
 
-$config{makedepprog} =
-    $ecc eq "gcc" || $ecc eq "clang" ? $target{cc} : "makedepend";
 $config{depflags} =~ s/^\s*//;
 
 
@@ -1130,24 +1100,23 @@ $config{bn_ll}                  =0;
 $config{export_var_as_fn}      =0;
 my $def_int="unsigned int";
 $config{rc4_int}               =$def_int;
-$config{rc2_int}               =$def_int;
 ($config{b64l},$config{b64},$config{b32})=(0,0,1);
 
+my $count = 0;
 foreach (sort split(/\s+/,$target{bn_ops})) {
-    $config{bn_ll}=1                           if /BN_LLONG/;
-    $config{rc4_int}="unsigned char"           if /RC4_CHAR/;
-    ($config{b64l},$config{b64},$config{b32},$config{b16},$config{b8})
-       =(0,1,0,0,0)                            if /SIXTY_FOUR_BIT/;
-    ($config{b64l},$config{b64},$config{b32},$config{b16},$config{b8})
-       =(1,0,0,0,0)                            if /SIXTY_FOUR_BIT_LONG/;
-    ($config{b64l},$config{b64},$config{b32},$config{b16},$config{b8})
-       =(0,0,1,0,0)                            if /THIRTY_TWO_BIT/;
-    ($config{b64l},$config{b64},$config{b32},$config{b16},$config{b8})
-       =(0,0,0,1,0)                            if /SIXTEEN_BIT/;
-    ($config{b64l},$config{b64},$config{b32},$config{b16},$config{b8})
-       =(0,0,0,0,1)                            if /EIGHT_BIT/;
-    $config{export_var_as_fn}=1                        if /EXPORT_VAR_AS_FN/;
+    $count++ if /SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT/;
+    $config{export_var_as_fn}=1                 if $_ eq 'EXPORT_VAR_AS_FN';
+    $config{bn_ll}=1                           if $_ eq 'BN_LLONG';
+    $config{rc4_int}="unsigned char"           if $_ eq 'RC4_CHAR';
+    ($config{b64l},$config{b64},$config{b32})
+       =(0,1,0)                                if $_ eq 'SIXTY_FOUR_BIT';
+    ($config{b64l},$config{b64},$config{b32})
+       =(1,0,0)                                if $_ eq 'SIXTY_FOUR_BIT_LONG';
+    ($config{b64l},$config{b64},$config{b32})
+       =(0,0,1)                                if $_ eq 'THIRTY_TWO_BIT';
 }
+die "Exactly one of SIXTY_FOUR_BIT|SIXTY_FOUR_BIT_LONG|THIRTY_TWO_BIT can be set in bn_ops\n"
+    if $count > 1;
 
 
 # Hack cflags for better warnings (dev option) #######################
@@ -1158,15 +1127,16 @@ $config{cflags} =~ s/([\\\"])/\\\1/g;
 
 if (defined($config{api})) {
     $config{openssl_api_defines} = [ "OPENSSL_MIN_API=".$apitable->{$config{api}} ];
-    my $apiflag = sprintf("-DOPENSSL_API_COMPAT=%s", $apitable->{$config{api}});
-    $default_depflags .= " $apiflag";
-    $config{cflags} .= " $apiflag";
+    my $apiflag = sprintf("OPENSSL_API_COMPAT=%s", $apitable->{$config{api}});
+    push @default_depdefines, $apiflag;
+    push @{$config{defines}}, $apiflag;
 }
 
 if ($strict_warnings)
        {
        my $wopt;
-       die "ERROR --strict-warnings requires gcc or clang" unless ($ecc =~ /gcc(-\d(\.\d)*)?$/ or $ecc =~ /clang$/);
+       die "ERROR --strict-warnings requires gcc or clang"
+            unless $ecc eq 'gcc' || $ecc eq 'clang';
        foreach $wopt (split /\s+/, $gcc_devteam_warn)
                {
                $config{cflags} .= " $wopt" unless ($config{cflags} =~ /(^|\s)$wopt(\s|$)/)
@@ -1186,11 +1156,391 @@ if ($strict_warnings)
                        }
                if ($target =~ /^BSD-/)
                        {
-                       $config{lflags} .= " -lexecinfo";
+                       $config{ex_libs} .= " -lexecinfo";
                        }
                }
        }
 
+# If we use the unified build, collect information from build.info files
+my %unified_info = ();
+
+if ($builder eq "unified") {
+    # Store the name of the template file we will build the build file from
+    # in %config.  This may be useful for the build file itself.
+    my $build_file_template =
+        catfile($srcdir, "Configurations",
+                $builder_platform."-".$target{build_file}.".tmpl");
+    $build_file_template =
+        catfile($srcdir, "Configurations", $target{build_file}.".tmpl")
+        if (! -f $build_file_template);
+    $config{build_file_template} = $build_file_template;
+
+    use lib catdir(dirname(__FILE__),"util");
+    use with_fallback qw(Text::Template);
+
+    sub cleandir {
+        my $base = shift;
+        my $dir = shift;
+        my $relativeto = shift || ".";
+
+        $dir = catdir($base,$dir) unless isabsolute($dir);
+
+        # Make sure the directories we're building in exists
+        mkpath($dir);
+
+        my $res = abs2rel(absolutedir($dir), rel2abs($relativeto));
+        #print STDERR "DEBUG[cleandir]: $dir , $base => $res\n";
+        return $res;
+    }
+
+    sub cleanfile {
+        my $base = shift;
+        my $file = shift;
+        my $relativeto = shift || ".";
+
+        $file = catfile($base,$file) unless isabsolute($file);
+
+        my $d = dirname($file);
+        my $f = basename($file);
+
+        # Make sure the directories we're building in exists
+        mkpath($d);
+
+        my $res = abs2rel(catfile(absolutedir($d), $f), rel2abs($relativeto));
+        #print STDERR "DEBUG[cleanfile]: $d , $f => $res\n";
+        return $res;
+    }
+
+    my @build_infos = ( [ ".", "build.info" ] );
+    foreach (@{$config{dirs}}) {
+        push @build_infos, [ $_, "build.info" ]
+            if (-f catfile($srcdir, $_, "build.info"));
+    }
+    foreach (@{$config{sdirs}}) {
+        push @build_infos, [ catdir("crypto", $_), "build.info" ]
+            if (-f catfile($srcdir, "crypto", $_, "build.info"));
+    }
+    foreach (@{$config{engdirs}}) {
+        push @build_infos, [ catdir("engines", $_), "build.info" ]
+            if (-f catfile($srcdir, "engines", $_, "build.info"));
+    }
+
+    foreach (@build_infos) {
+        my $sourced = catdir($srcdir, $_->[0]);
+        my $buildd = catdir($blddir, $_->[0]);
+
+        mkpath($buildd);
+
+        my $f = $_->[1];
+        # The basic things we're trying to build
+        my @programs = ();
+        my @libraries = ();
+        my @engines = ();
+        my @scripts = ();
+        my @extra = ();
+        my @intermediates = ();
+        my @rawlines = ();
+
+        my %ordinals = ();
+        my %sources = ();
+        my %includes = ();
+        my %depends = ();
+        my %renames = ();
+        my %sharednames = ();
+
+        my $template = Text::Template->new(TYPE => 'FILE',
+                                           SOURCE => catfile($sourced, $f));
+        die "Something went wrong with $sourced/$f: $!\n" unless $template;
+        my @text =
+            split /^/m,
+            $template->fill_in(HASH => { config => \%config,
+                                         target => \%target,
+                                         builddir => abs2rel($buildd, $blddir),
+                                         sourcedir => abs2rel($sourced, $blddir),
+                                         buildtop => abs2rel($blddir, $blddir),
+                                         sourcetop => abs2rel($srcdir, $blddir) },
+                               DELIMITERS => [ "{-", "-}" ]);
+
+        # The top item of this stack has the following values
+        # -2 positive already run and we found ELSE (following ELSIF should fail)
+        # -1 positive already run (skip until ENDIF)
+        # 0 negatives so far (if we're at a condition, check it)
+        # 1 last was positive (don't skip lines until next ELSE, ELSIF or ENDIF)
+        # 2 positive ELSE (following ELSIF should fail)
+        my @skip = ();
+        collect_information(
+            collect_from_array([ @text ],
+                               qr/\\$/ => sub { my $l1 = shift; my $l2 = shift;
+                                                $l1 =~ s/\\$//; $l1.$l2 }),
+            # Info we're looking for
+            qr/^\s*IF\[((?:\\.|[^\\\]])*)\]\s*$/
+            => sub { push @skip, !! $1; },
+            qr/^\s*ELSIF\[((?:\\.|[^\\\]])*)\]\s*$/
+            => sub { die "ELSIF out of scope" if ! @skip;
+                     die "ELSIF following ELSE" if abs($skip[$#skip]) == 2;
+                     $skip[$#skip] = -1 if $skip[$#skip] != 0;
+                     $skip[$#skip] = !! $1
+                         if $skip[$#skip] == 0; },
+            qr/^\s*ELSE\s*$/
+            => sub { die "ELSE out of scope" if ! @skip;
+                     $skip[$#skip] = -2 if $skip[$#skip] != 0;
+                     $skip[$#skip] = 2 if $skip[$#skip] == 0; },
+            qr/^\s*ENDIF\s*$/
+            => sub { die "ENDIF out of scope" if ! @skip;
+                     pop @skip; },
+            qr/^\s*PROGRAMS\s*=\s*(.*)\s*$/
+            => sub { push @programs, split(/\s+/, $1)
+                         if !@skip || $skip[$#skip] > 0 },
+            qr/^\s*LIBS\s*=\s*(.*)\s*$/
+            => sub { push @libraries, split(/\s+/, $1)
+                         if !@skip || $skip[$#skip] > 0 },
+            qr/^\s*ENGINES\s*=\s*(.*)\s*$/
+            => sub { push @engines, split(/\s+/, $1)
+                         if !@skip || $skip[$#skip] > 0 },
+            qr/^\s*SCRIPTS\s*=\s*(.*)\s*$/
+            => sub { push @scripts, split(/\s+/, $1)
+                         if !@skip || $skip[$#skip] > 0 },
+            qr/^\s*EXTRA\s*=\s*(.*)\s*$/
+            => sub { push @extra, split(/\s+/, $1)
+                         if !@skip || $skip[$#skip] > 0 },
+
+            qr/^\s*ORDINALS\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/,
+            => sub { push @{$ordinals{$1}}, split(/\s+/, $2)
+                         if !@skip || $skip[$#skip] > 0 },
+            qr/^\s*SOURCE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
+            => sub { push @{$sources{$1}}, split(/\s+/, $2)
+                         if !@skip || $skip[$#skip] > 0 },
+            qr/^\s*INCLUDE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
+            => sub { push @{$includes{$1}}, split(/\s+/, $2)
+                         if !@skip || $skip[$#skip] > 0 },
+            qr/^\s*DEPEND\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
+            => sub { push @{$depends{$1}}, split(/\s+/, $2)
+                         if !@skip || $skip[$#skip] > 0 },
+            qr/^\s*RENAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
+            => sub { push @{$renames{$1}}, split(/\s+/, $2)
+                         if !@skip || $skip[$#skip] > 0 },
+            qr/^\s*SHARED_NAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
+            => sub { push @{$sharednames{$1}}, split(/\s+/, $2)
+                         if !@skip || $skip[$#skip] > 0 },
+            qr/^\s*BEGINRAW\[((?:\\.|[^\\\]])+)\]\s*$/
+            => sub {
+                my $lineiterator = shift;
+                my $target_kind = $1;
+                while (defined $lineiterator->()) {
+                    chomp;
+                    if (/^\s*ENDRAW\[((?:\\.|[^\\\]])+)\]\s*$/) {
+                        die "ENDRAW doesn't match BEGINRAW"
+                            if $1 ne $target_kind;
+                        last;
+                    }
+                    next if @skip && $skip[$#skip] <= 0;
+                    push @rawlines,  $_
+                        if ($target_kind eq $target{build_file}
+                            || $target_kind eq $target{build_file}."(".$builder_platform.")");
+                }
+            },
+            qr/^(?:#.*|\s*)$/ => sub { },
+            "OTHERWISE" => sub { die "Something wrong with this line:\n$_\nat $sourced/$f" }
+            );
+        die "runaway IF?" if (@skip);
+
+        foreach (keys %renames) {
+            die "$_ renamed to more than one thing: "
+                ,join(" ", @{$renames{$_}}),"\n"
+                if scalar @{$renames{$_}} > 1;
+            my $dest = cleanfile($buildd, $_, $blddir);
+            my $to = cleanfile($buildd, $renames{$_}->[0], $blddir);
+            die "$dest renamed to more than one thing: "
+                ,$unified_info{rename}->{$dest}, $to
+                unless !defined($unified_info{rename}->{$dest})
+                or $unified_info{rename}->{$dest} eq $to;
+            $unified_info{rename}->{$dest} = $to;
+        }
+
+        foreach (@programs) {
+            my $program = cleanfile($buildd, $_, $blddir);
+            if ($unified_info{rename}->{$program}) {
+                $program = $unified_info{rename}->{$program};
+            }
+            $unified_info{programs}->{$program} = 1;
+        }
+
+        foreach (@libraries) {
+            my $library = cleanfile($buildd, $_, $blddir);
+            if ($unified_info{rename}->{$library}) {
+                $library = $unified_info{rename}->{$library};
+            }
+            $unified_info{libraries}->{$library} = 1;
+        }
+
+        die <<"EOF" if $config{no_shared} && scalar @engines;
+ENGINES can only be used if configured with 'shared'.
+This is usually a fault in a build.info file.
+EOF
+        foreach (@engines) {
+            my $library = cleanfile($buildd, $_, $blddir);
+            if ($unified_info{rename}->{$library}) {
+                $library = $unified_info{rename}->{$library};
+            }
+            $unified_info{engines}->{$library} = 1;
+        }
+
+        foreach (@scripts) {
+            my $script = cleanfile($buildd, $_, $blddir);
+            if ($unified_info{rename}->{$script}) {
+                $script = $unified_info{rename}->{$script};
+            }
+            $unified_info{scripts}->{$script} = 1;
+        }
+
+        foreach (@extra) {
+            my $extra = cleanfile($buildd, $_, $blddir);
+            $unified_info{extra}->{$extra} = 1;
+        }
+
+        push @{$unified_info{rawlines}}, @rawlines;
+
+        if (!$config{no_shared}) {
+            # Check sharednames.
+            foreach (keys %sharednames) {
+                my $dest = cleanfile($buildd, $_, $blddir);
+                if ($unified_info{rename}->{$dest}) {
+                    $dest = $unified_info{rename}->{$dest};
+                }
+                die "shared_name for $dest with multiple values: "
+                    ,join(" ", @{$sharednames{$_}}),"\n"
+                    if scalar @{$sharednames{$_}} > 1;
+                my $to = cleanfile($buildd, $sharednames{$_}->[0], $blddir);
+                die "shared_name found for a library $dest that isn't defined\n"
+                    unless $unified_info{libraries}->{$dest};
+                die "shared_name for $dest with multiple values: "
+                    ,$unified_info{sharednames}->{$dest}, ", ", $to
+                    unless !defined($unified_info{sharednames}->{$dest})
+                    or $unified_info{sharednames}->{$dest} eq $to;
+                $unified_info{sharednames}->{$dest} = $to;
+            }
+
+            # Additionally, we set up sharednames for libraries that don't
+            # have any, as themselves.
+            foreach (keys %{$unified_info{libraries}}) {
+                if (!defined $unified_info{sharednames}->{$_}) {
+                    $unified_info{sharednames}->{$_} = $_
+                }
+            }
+        }
+
+        foreach (keys %ordinals) {
+            my $dest = $_;
+            my $ddest = cleanfile($buildd, $_, $blddir);
+            if ($unified_info{rename}->{$ddest}) {
+                $ddest = $unified_info{rename}->{$ddest};
+            }
+            foreach (@{$ordinals{$dest}}) {
+                my %known_ordinals =
+                    (
+                     crypto =>
+                     cleanfile($sourced, catfile("util", "libeay.num"), $blddir),
+                     ssl =>
+                     cleanfile($sourced, catfile("util", "ssleay.num"), $blddir)
+                    );
+                my $o = $known_ordinals{$_};
+                die "Ordinals for $ddest defined more than once\n"
+                    if $unified_info{ordinals}->{$ddest};
+                $unified_info{ordinals}->{$ddest} = [ $_, $o ];
+            }
+        }
+
+        foreach (keys %sources) {
+            my $dest = $_;
+            my $ddest = cleanfile($buildd, $_, $blddir);
+            if ($unified_info{rename}->{$ddest}) {
+                $ddest = $unified_info{rename}->{$ddest};
+            }
+            foreach (@{$sources{$dest}}) {
+                my $s = cleanfile($sourced, $_, $blddir);
+
+                # If it isn't in the source tree, we assume it's generated
+                # in the build tree
+                if (! -f $s) {
+                    $s = cleanfile($buildd, $_, $blddir);
+                }
+                # We recognise C and asm files
+                if ($s =~ /\.[csS]\b$/) {
+                    (my $o = $_) =~ s/\.[csS]\b$/.o/;
+                    $o = cleanfile($buildd, $o, $blddir);
+                    $unified_info{sources}->{$ddest}->{$o} = 1;
+                    $unified_info{sources}->{$o}->{$s} = 1;
+                } else {
+                    $unified_info{sources}->{$ddest}->{$s} = 1;
+                }
+            }
+        }
+
+        foreach (keys %depends) {
+            my $dest = $_;
+            my $ddest = cleanfile($buildd, $_, $blddir);
+            if ($unified_info{rename}->{$ddest}) {
+                $ddest = $unified_info{rename}->{$ddest};
+            }
+            foreach (@{$depends{$dest}}) {
+                my $d = cleanfile($sourced, $_, $blddir);
+
+                # If it isn't found in the source, let's assume it's generated
+                # and that the Makefile template has the lines
+                if (! -f $d) {
+                    $d = cleanfile($buildd, $_, $blddir);
+                }
+                # Take note if the file to depend on is being renamed
+                if ($unified_info{rename}->{$d}) {
+                    $d = $unified_info{rename}->{$d};
+                }
+                $unified_info{depends}->{$ddest}->{$d} = 1;
+                # If we depend on a header file, let's make sure it
+                # can get included
+                if ($d =~ /\.h$/) {
+                    my $i = dirname($d);
+                    push @{$unified_info{includes}->{$ddest}}, $i
+                        unless grep { $_ eq $i } @{$unified_info{includes}->{$ddest}};
+                }
+            }
+        }
+
+        foreach (keys %includes) {
+            my $dest = $_;
+            my $ddest = cleanfile($buildd, $_, $blddir);
+            if ($unified_info{rename}->{$ddest}) {
+                $ddest = $unified_info{rename}->{$ddest};
+            }
+            foreach (@{$includes{$dest}}) {
+                my $i = cleandir($sourced, $_, $blddir);
+                push @{$unified_info{includes}->{$ddest}}, $i
+                    unless grep { $_ eq $i } @{$unified_info{includes}->{$ddest}};
+            }
+        }
+    }
+
+    ### Make unified_info a bit more efficient
+    # One level structures
+    foreach (("programs", "libraries", "engines", "scripts", "extra")) {
+        $unified_info{$_} = [ sort keys %{$unified_info{$_}} ];
+    }
+    # Two level structures
+    foreach my $l1 (("sources", "ldadd", "depends")) {
+        foreach my $l2 (sort keys %{$unified_info{$l1}}) {
+            $unified_info{$l1}->{$l2} =
+                [ sort keys %{$unified_info{$l1}->{$l2}} ];
+        }
+    }
+}
+
+# For the schemes that need it, we provide the old *_obj configs
+# from the *_asm_obj ones
+foreach (grep /_asm_src$/, keys %target) {
+    my $src = $_;
+    (my $obj = $_) =~ s/_asm_src$/_obj/;
+    ($target{$obj} = $target{$src}) =~ s/\.[csS]\b/.o/g;
+}
+
 # Write down our configuration where it fits #########################
 
 open(OUT,">configdata.pm") || die "unable to create configdata.pm: $!\n";
@@ -1203,7 +1553,7 @@ use warnings;
 use Exporter;
 #use vars qw(\@ISA \@EXPORT);
 our \@ISA = qw(Exporter);
-our \@EXPORT = qw(\%config \%target %withargs);
+our \@EXPORT = qw(\%config \%target %withargs %unified_info);
 
 EOF
 print OUT "our %config = (\n";
@@ -1262,14 +1612,67 @@ foreach (sort keys %withargs) {
 print OUT <<"EOF";
 );
 
-1;
 EOF
+if ($builder eq "unified") {
+    my $recurse;
+    $recurse = sub {
+        my $indent = shift;
+        foreach (@_) {
+            if (ref $_ eq "ARRAY") {
+                print OUT " "x$indent, "[\n";
+                foreach (@$_) {
+                    $recurse->($indent + 4, $_);
+                }
+                print OUT " "x$indent, "],\n";
+            } elsif (ref $_ eq "HASH") {
+                my %h = %$_;
+                print OUT " "x$indent, "{\n";
+                foreach (sort keys %h) {
+                    if (ref $h{$_} eq "") {
+                        print OUT " "x($indent + 4), quotify("perl", $_), " => ", quotify("perl", $h{$_}), ",\n";
+                    } else {
+                        print OUT " "x($indent + 4), quotify("perl", $_), " =>\n";
+                        $recurse->($indent + 8, $h{$_});
+                    }
+                }
+                print OUT " "x$indent, "},\n";
+            } else {
+                print OUT " "x$indent, quotify("perl", $_), ",\n";
+            }
+        }
+    };
+    print OUT "our %unified_info = (\n";
+    foreach (sort keys %unified_info) {
+        if (ref $unified_info{$_} eq "") {
+            print OUT " "x4, quotify("perl", $_), " => ", quotify("perl", $unified_info{$_}), ",\n";
+        } else {
+            print OUT " "x4, quotify("perl", $_), " =>\n";
+            $recurse->(8, $unified_info{$_});
+        }
+    }
+    print OUT <<"EOF";
+);
+
+EOF
+}
+print OUT "1;\n";
 close(OUT);
 
-print "IsMK1MF       =", ($target{build_scheme}->[0] eq "mk1mf" ? "yes" : "no"), "\n";
+die <<"EOF" if $builder ne "unified" && $srcdir ne $blddir;
+
+***** Trying building anywhere else than in the source tree will not
+***** work for target $config{target}.  To make it possible, it needs
+***** to use the "unified" build scheme.
+
+EOF
+
+print "IsMK1MF       =", ($builder eq "mk1mf" ? "yes" : "no"), "\n";
 print "CC            =$target{cc}\n";
 print "CFLAG         =$config{cflags}\n";
-print "EX_LIBS       =$config{lflags}\n";
+print "DEFINES       =",join(" ", @{$config{defines}}),"\n";
+print "LFLAG         =$config{lflags}\n";
+print "PLIB_LFLAG    =$config{plib_lflags}\n";
+print "EX_LIBS       =$config{ex_libs}\n";
 print "CPUID_OBJ     =$target{cpuid_obj}\n";
 print "BN_ASM        =$target{bn_obj}\n";
 print "EC_ASM        =$target{ec_obj}\n";
@@ -1297,64 +1700,101 @@ print "SIXTY_FOUR_BIT mode\n" if $config{b64};
 print "THIRTY_TWO_BIT mode\n" if $config{b32};
 print "BN_LLONG mode\n" if $config{bn_ll};
 print "RC4 uses $config{rc4_int}\n" if $config{rc4_int} != $def_int;
-print "RC2 uses $config{rc2_int}\n" if $config{rc2_int} != $def_int;
 
-run_dofile("$Makefile.in","$Makefile");
-
-run_dofile("include/openssl/opensslconf.h.in", "include/openssl/opensslconf.h");
+mkpath(catdir($blddir, "include/openssl"));
+run_dofile(catfile($blddir, "include/openssl/opensslconf.h"),
+           catfile($srcdir, "include/openssl/opensslconf.h.in"));
 
+mkpath(catdir($blddir, "crypto/include/internal"));
 foreach my $alg ( 'bn' ) {
-    run_dofile("crypto/include/internal/${alg}_conf.h.in",
-              "crypto/include/internal/${alg}_conf.h");
+    run_dofile(catfile($blddir, "crypto/include/internal/${alg}_conf.h"),
+               catfile($srcdir, "crypto/include/internal/${alg}_conf.h.in"));
 }
 
-# Copy all Makefile.in to Makefile (except top-level)
-use File::Find;
-use IO::File;
-find(sub {
-        return if ($_ ne "Makefile.in" || $File::Find::dir eq ".");
-        my $in = IO::File->new($_, "r") or
-            die sprintf "Error reading Makefile.in in %s: !$\n",
-                $File::Find::dir;
-        my $out = IO::File->new("Makefile", "w") or
-            die sprintf "Error writing Makefile in %s: !$\n",
-                $File::Find::dir;
-        print $out "# Generated from $_, do not edit\n";
-        while (my $line = <$in>) { print $out $line }
-        $in->close() or
-            die sprintf "Error reading Makefile.in in %s: !$\n",
-                $File::Find::dir;
-        $out->close() or
-            die sprintf "Error writing Makefile in %s: !$\n",
-                $File::Find::dir;
-    }, ".");
+###
+### When the old "unixmake" scheme goes away, so does this function
+###
+sub build_Makefile {
+    run_dofile("Makefile","Makefile.in");
+
+    # Copy all Makefile.in to Makefile (except top-level)
+    use File::Find;
+    use IO::File;
+    find(
+        {
+            preprocess => sub {
+                grep(!/^\./, @_);
+            },
+            wanted => sub {
+                return if ($_ ne "Makefile.in" || $File::Find::dir eq ".");
+                my $in = IO::File->new($_, "r") or
+                    die sprintf "Error reading Makefile.in in %s: !$\n",
+                    $File::Find::dir;
+                my $out = IO::File->new("Makefile", "w") or
+                    die sprintf "Error writing Makefile in %s: !$\n",
+                    $File::Find::dir;
+                print $out "# Generated from $_, do not edit\n";
+                while (my $line = <$in>) { print $out $line }
+                $in->close() or
+                    die sprintf "Error reading Makefile.in in %s: !$\n",
+                    $File::Find::dir;
+                $out->close() or
+                    die sprintf "Error writing Makefile in %s: !$\n",
+                    $File::Find::dir;
+            },
+        },
+        ".");
+}
 
 my %builders = (
+    unified => sub {
+        run_dofile(catfile($blddir, $target{build_file}),
+                   $config{build_file_template},
+                   catfile($srcdir, "Configurations", "common.tmpl"));
+
+        my $make_command = "$make PERL=\'$config{perl}\'";
+        my $make_targets = "";
+        my $need_make_depend =
+            join(" ", @{$config{depdefines}}) ne join(" ", @default_depdefines);
+        $make_targets .= " depend"
+            if $need_make_depend && $make_depend;
+
+        (system $make_command.$make_targets) == 0
+            or die "make $make_targets failed"
+            if $make_targets ne "";
+
+        if ($need_make_depend && !$make_depend) {
+            $warn_make_depend++;
+        }
+    },
     unixmake => sub {
-       my $make_command = "$make PERL=\'$config{perl}\'";
-       my $make_targets = "";
-       $make_targets .= " depend" if $config{depflags} ne $default_depflags && $make_depend;
-       (system $make_command.$make_targets) == 0 or die "make $make_targets failed"
-           if $make_targets ne "";
-       if ($config{depflags} ne $default_depflags && !$make_depend) {
+        build_Makefile();
+
+        run_dofile("util/domd", "util/domd.in");
+        chmod 0755, "util/domd";
+
+        my $make_command = "$make PERL=\'$config{perl}\'";
+        my $make_targets = "";
+        my $need_make_depend =
+            join(" ", @{$config{depdefines}}) ne join(" ", @default_depdefines);
+        $make_targets .= " depend"
+            if $need_make_depend && $make_depend;
+
+        (system $make_command.$make_targets) == 0
+            or die "make $make_targets failed"
+            if $make_targets ne "";
+
+        if ($need_make_depend && !$make_depend) {
             $warn_make_depend++;
         }
     },
     mk1mf => sub {
-       open (OUT,">crypto/buildinf.h") || die "Can't open buildinf.h";
-       printf OUT <<"EOF";
-#ifndef MK1MF_BUILD
-  /* auto-generated by Configure for crypto/cversion.c:
-   * for Unix builds, crypto/Makefile.ssl generates functional definitions;
-   * Windows builds (and other mk1mf builds) compile cversion.c with
-   * -DMK1MF_BUILD and use definitions added to this file by util/mk1mf.pl. */
-  #error "Windows builds (PLATFORM=$target) use mk1mf.pl-created Makefiles"
-#endif
-EOF
-       close(OUT);
+        my $platform = shift;
+        # The only reason we do this is to have something to build MINFO from
+        build_Makefile();
 
        # create the ms/version32.rc file if needed
-       if (! grep /^netware/, @{$target{build_scheme}}) {
+       if ($platform ne "netware") {
            my ($v1, $v2, $v3, $v4);
            if ($config{version_num} =~ /^0x([0-9a-f]{1})([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{1})L$/i) {
                $v1=hex $1;
@@ -1417,8 +1857,7 @@ EOF
     },
     );
 
-my ($builder, @builder_opts) = @{$target{build_scheme}};
-$builders{$builder}->(@builder_opts);
+$builders{$builder}->($builder_platform, @builder_opts);
 
 print <<"EOF";
 
@@ -1448,6 +1887,39 @@ print <<"EOF" if ($warn_make_depend);
        make depend
 EOF
 
+###### TO BE REMOVED BEFORE FINAL RELEASE
+######
+###### If the user hasn't chosen --unified, try to nudge them.
+if ($target{build_file} eq "Makefile"
+    && $target{build_scheme}->[0] eq "unixmake"
+    && !$unified) {
+
+    my $plausible_builddir =
+        abs2rel(rel2abs("../_openssl-build_$target"),rel2abs("."));
+    my $plausible_to_sourcedir =
+        abs2rel(rel2abs("."),rel2abs("../_openssl-build_$target"));
+    print <<"EOF";
+
+----------------------------------------------------------------------
+Please consider configuring with the flag --unified .
+It's to test out a new "unified" building system.
+
+One cool feature is that you can have your build directory elsewhere,
+for example:
+
+    make clean          # Clean the current configuration away
+    mkdir $plausible_builddir
+    cd $plausible_builddir
+    $plausible_to_sourcedir/config --unified
+    make
+    make test
+
+Please report any problem you have.
+----------------------------------------------------------------------
+
+EOF
+}
+
 exit(0);
 
 ######################################################################
@@ -1474,10 +1946,10 @@ sub asm {
 sub _add {
     my $separator = shift;
 
-    # If there's any ARRAY in the collection of values, we will return
-    # an ARRAY of combined values, otherwise a string of joined values
-    # with $separator as the separator.
-    my $found_array = 0;
+    # If there's any ARRAY in the collection of values OR the separator
+    # is undef, we will return an ARRAY of combined values, otherwise a
+    # string of joined values with $separator as the separator.
+    my $found_array = !defined($separator);
 
     my @values =
        map {
@@ -1670,11 +2142,17 @@ sub usage
 
 sub run_dofile()
 {
-    my $in = shift;
     my $out = shift;
+    my @templates = @_;
 
-    # should we remove $out ?
-    system("$config{perl} -I. -Mconfigdata util/dofile.pl -o\"Configure\" $in > $out.new");
+    unlink $out || warn "Can't remove $out, $!"
+        if -f $out;
+    foreach (@templates) {
+        die "Can't open $_, $!" unless -f $_;
+    }
+    my $cmd = "$config{perl} \"-I.\" \"-Mconfigdata\" $dofile -o\"Configure\" \"".join("\" \"",@templates)."\" > \"$out.new\"";
+    #print STDERR "DEBUG[run_dofile]: \$cmd = $cmd\n";
+    system($cmd);
     exit 1 if $? != 0;
     rename("$out.new", $out) || die "Can't rename $out.new, $!";
 }
@@ -1694,14 +2172,23 @@ sub print_table_entry
        "sys_id",
        "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",
@@ -1753,6 +2240,46 @@ sub print_table_entry
 
 # Utility routines ###################################################
 
+# On VMS, if the given file is a logical name, File::Spec::Functions
+# will consider it an absolute path.  There are cases when we want a
+# purely syntactic check without checking the environment.
+sub isabsolute {
+    my $file = shift;
+
+    # On non-platforms, we just use file_name_is_absolute().
+    return file_name_is_absolute($file) unless $^O eq "VMS";
+
+    # If the file spec includes a device or a directpry spec,
+    # file_name_is_absolute() is perfectly safe.
+    return file_name_is_absolute($file) if $file =~ m|[:\[]|;
+
+    # Here, we know the given file spec isn't absolute
+    return 0;
+}
+
+# Makes a directory absolute and cleans out /../ in paths like foo/../bar
+# On some platforms, this uses rel2abs(), while on others, realpath() is used.
+# realpath() requires that at least all path components except the last is an
+# existing directory.  On VMS, the last component of the directory spec must
+# exist.
+sub absolutedir {
+    my $dir = shift;
+
+    # realpath() is quite buggy on VMS.  It uses LIB$FID_TO_NAME, which
+    # will return the volume name for the device, no matter what.  Also,
+    # it will return an incorrect directory spec if the argument is a
+    # directory that doesn't exist.
+    if ($^O eq "VMS") {
+        return rel2abs($dir);
+    }
+
+    # We use realpath() on Unix, since no other will properly clean out
+    # a directory spec.
+    use Cwd qw/realpath/;
+
+    return realpath($dir);
+}
+
 sub which
        {
        my($name)=@_;
@@ -1780,34 +2307,87 @@ sub quotify {
     map { $processor->($_); } @_;
 }
 
-# collect_information($filename, $line_continue, $regexp => $CODEref, ...)
-# $filename is the file to read.
-# $line_continue is either undef (which is a noop), or two arguments, where
-# the first is a regexp detecting a line continuation ending, and the
-# following argument is a CODEref that takes care of concatenating two
-# lines.
+# collect_from_file($filename, $line_concat_cond_re, $line_concat)
+# $filename is a file name to read from
+# $line_concat_cond_re is a regexp detecting a line continuation ending
+# $line_concat is a CODEref that takes care of concatenating two lines
+sub collect_from_file {
+    my $filename = shift;
+    my $line_concat_cond_re = shift;
+    my $line_concat = shift;
+
+    open my $fh, $filename || die "unable to read $filename: $!\n";
+    return sub {
+        my $saved_line = "";
+        $_ = "";
+        while (<$fh>) {
+            chomp;
+            if (defined $line_concat) {
+                $_ = $line_concat->($saved_line, $_);
+                $saved_line = "";
+            }
+            if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
+                $saved_line = $_;
+                next;
+            }
+            return $_;
+        }
+        die "$filename ending with continuation line\n" if $_;
+        close $fh;
+        return undef;
+    }
+}
+
+# collect_from_array($array, $line_concat_cond_re, $line_concat)
+# $array is an ARRAYref of lines
+# $line_concat_cond_re is a regexp detecting a line continuation ending
+# $line_concat is a CODEref that takes care of concatenating two lines
+sub collect_from_array {
+    my $array = shift;
+    my $line_concat_cond_re = shift;
+    my $line_concat = shift;
+    my @array = (@$array);
+
+    return sub {
+        my $saved_line = "";
+        $_ = "";
+        while (defined($_ = shift @array)) {
+            chomp;
+            if (defined $line_concat) {
+                $_ = $line_concat->($saved_line, $_);
+                $saved_line = "";
+            }
+            if (defined $line_concat_cond_re && /$line_concat_cond_re/) {
+                $saved_line = $_;
+                next;
+            }
+            return $_;
+        }
+        die "input text ending with continuation line\n" if $_;
+        return undef;
+    }
+}
+
+# collect_information($lineiterator, $line_continue, $regexp => $CODEref, ...)
+# $lineiterator is a CODEref that delivers one line at a time.
 # All following arguments are regex/CODEref pairs, where the regexp detects a
 # line and the CODEref does something with the result of the regexp.
 sub collect_information {
-    my $filename = shift;
-    my $line_continue_re = shift;
-    my $line_concat = defined($line_continue_re) ? shift : undef;
+    my $lineiterator = shift;
     my %collectors = @_;
 
-    my $saved_line = "";
-    open IN, $filename || die "unable to read $filename: $!\n";
-    while(<IN>) {
-       chomp;
-       if (defined $line_concat) {
-           $_ = $line_concat->($saved_line, $_);
-       }
-       if (defined $line_continue_re && /$line_continue_re/) {
-           $saved_line = $_;
-           next;
-       }
-       foreach my $re (keys %collectors) {
-           if (/$re/) { $collectors{$re}->() };
-       }
+    while(defined($_ = $lineiterator->())) {
+        chomp;
+        my $found = 0;
+        foreach my $re (keys %collectors) {
+            if ($re ne "OTHERWISE" && /$re/) {
+                $collectors{$re}->($lineiterator);
+                $found = 1;
+            };
+        }
+        if ($collectors{"OTHERWISE"}) {
+            $collectors{"OTHERWISE"}->($lineiterator, $_)
+                unless $found || !defined $collectors{"OTHERWISE"};
+        }
     }
-    close IN;
 }