Rework building: Get rid of old %unified_info structures

Now that we have the names of libraries on different systems
established through platform modules, we can remove the old structure
to establish the same thing, i.e. $unified_info{sharednames} and
$unified_info{rename}.  That means removing support for the RENAME and
SHARED_NAME keywords in build.info as well.

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/7473)

Configurations/README

@@ -446,23 +446,6 @@ support building static libraries and DLLs at the same time, so using
 static libraries on Windows can only be done when configured
 'no-shared'.
 
-One some platforms, shared libraries come with a name that's different
-from their static counterpart.  That's declared as follows:
-
-    SHARED_NAME[libfoo]=cygfoo-{- $config{shlibver} -}
-
-The example is from Cygwin, which has a required naming convention.
-
-Sometimes, it makes sense to rename an output file, for example a
-library:
-
-    RENAME[libfoo]=libbar
-
-That line has "libfoo" renamed to "libbar".  While it makes no
-sense at all to just have a rename like that (why not just use
-"libbar" everywhere?), it does make sense when it can be used
-conditionally.  See a little further below for an example.
-
 In some cases, it's desirable to include some source files in the
 shared form of a library only:
 
@@ -571,15 +554,6 @@ conditions based on something in the passed variables, for example:
       SOURCE[libfoo]=...
     ENDIF
 
-or:
-
-    # VMS has a cultural standard where all libraries are prefixed.
-    # For OpenSSL, the choice is 'ossl_'
-    IF[{- $config{target} =~ /^vms/ -}]
-     RENAME[libcrypto]=ossl_libcrypto
-     RENAME[libssl]=ossl_libssl
-    ENDIF
-
 
 Build-file programming with the "unified" build system
 ======================================================

Configurations/common.tmpl

@@ -129,8 +129,7 @@
      return "" if $cache{$lib};
      unless ($disabled{shared} || $lib =~ /\.a$/) {
          my $obj2shlib = defined &obj2shlib ? \&obj2shlib : \&libobj2shlib;
-         $OUT .= $obj2shlib->(shlib => $unified_info{sharednames}->{$lib},
-                              lib => $lib,
+         $OUT .= $obj2shlib->(lib => $lib,
                               objs => $unified_info{shared_sources}->{$lib},
                               deps => [ reducedepends(resolvedepends($lib)) ],
                               installed => is_installed($lib));

Configure

@@ -1727,8 +1727,6 @@ if ($builder eq "unified") {
         my %includes = ();
         my %defines = ();
         my %depends = ();
-        my %renames = ();
-        my %sharednames = ();
         my %generate = ();
 
         # We want to detect configdata.pm in the source tree, so we
@@ -1859,11 +1857,9 @@ if ($builder eq "unified") {
             => sub { push @{$generate{$1}}, $2
                          if !@skip || $skip[$#skip] > 0 },
             qr/^\s*RENAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
-            => sub { push @{$renames{$1}}, tokenize($2)
-                         if !@skip || $skip[$#skip] > 0 },
-            qr/^\s*SHARED_NAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
-            => sub { push @{$sharednames{$1}}, tokenize($2)
-                         if !@skip || $skip[$#skip] > 0 },
+            => sub { warn "RENAME is no longer supported\n" },
+             qr/^\s*SHARED_NAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
+            => sub { warn "SHARED_NAME is no longer supported\n" },
             qr/^\s*BEGINRAW\[((?:\\.|[^\\\]])+)\]\s*$/
             => sub {
                 my $lineiterator = shift;
@@ -1897,48 +1893,23 @@ if ($builder eq "unified") {
             );
         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 (@programs_install) {
             my $program = cleanfile($buildd, $_, $blddir);
-            if ($unified_info{rename}->{$program}) {
-                $program = $unified_info{rename}->{$program};
-            }
             $unified_info{install}->{programs}->{$program} = 1;
         }
 
         foreach (@libraries) {
             my $library = cleanfile($buildd, $_, $blddir);
-            if ($unified_info{rename}->{$library}) {
-                $library = $unified_info{rename}->{$library};
-            }
             $unified_info{libraries}->{$library} = 1;
         }
 
         foreach (@libraries_install) {
             my $library = cleanfile($buildd, $_, $blddir);
-            if ($unified_info{rename}->{$library}) {
-                $library = $unified_info{rename}->{$library};
-            }
             $unified_info{install}->{libraries}->{$library} = 1;
         }
 
@@ -1948,33 +1919,21 @@ 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 (@engines_install) {
             my $library = cleanfile($buildd, $_, $blddir);
-            if ($unified_info{rename}->{$library}) {
-                $library = $unified_info{rename}->{$library};
-            }
             $unified_info{install}->{engines}->{$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 (@scripts_install) {
             my $script = cleanfile($buildd, $_, $blddir);
-            if ($unified_info{rename}->{$script}) {
-                $script = $unified_info{rename}->{$script};
-            }
             $unified_info{install}->{scripts}->{$script} = 1;
         }
 
@@ -1990,53 +1949,20 @@ EOF
 
         push @{$unified_info{rawlines}}, @rawlines;
 
-        unless ($disabled{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} = $to;
-            }
-
-            # Additionally, we set up sharednames for libraries that don't
-            # have any, as themselves.  Only for libraries that aren't
-            # explicitly static.
-            foreach (grep !/\.a$/, keys %{$unified_info{libraries}}) {
-                if (!defined $unified_info{sharednames}->{$_}) {
-                    $unified_info{sharednames}->{$_} = $_
-                }
-            }
-
-            # Check that we haven't defined any library as both shared and
-            # explicitly static.  That is forbidden.
-            my @doubles = ();
-            foreach (grep /\.a$/, keys %{$unified_info{libraries}}) {
-                (my $l = $_) =~ s/\.a$//;
-                push @doubles, $l if defined $unified_info{sharednames}->{$l};
-            }
-            die "these libraries are both explicitly static and shared:\n  ",
-                join(" ", @doubles), "\n"
-                if @doubles;
+        # Check that we haven't defined any library as both shared and
+        # explicitly static.  That is forbidden.
+        my @doubles = ();
+        foreach (grep /\.a$/, keys %{$unified_info{libraries}}) {
+            (my $l = $_) =~ s/\.a$//;
+            push @doubles, $l if defined $unified_info{libraries}->{$l};
         }
+        die "these libraries are both explicitly static and shared:\n  ",
+            join(" ", @doubles), "\n"
+            if @doubles;
 
         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);
 
@@ -2069,9 +1995,6 @@ EOF
         foreach (keys %shared_sources) {
             my $dest = $_;
             my $ddest = cleanfile($buildd, $_, $blddir);
-            if ($unified_info{rename}->{$ddest}) {
-                $ddest = $unified_info{rename}->{$ddest};
-            }
             foreach (@{$shared_sources{$dest}}) {
                 my $s = cleanfile($sourced, $_, $blddir);
 
@@ -2110,9 +2033,6 @@ EOF
         foreach (keys %generate) {
             my $dest = $_;
             my $ddest = cleanfile($buildd, $_, $blddir);
-            if ($unified_info{rename}->{$ddest}) {
-                $ddest = $unified_info{rename}->{$ddest};
-            }
             die "more than one generator for $dest: "
                     ,join(" ", @{$generate{$_}}),"\n"
                     if scalar @{$generate{$_}} > 1;
@@ -2129,9 +2049,6 @@ EOF
             # a generated file in the build tree.
             if ($ddest ne "" && ($ddest eq $src_configdata || ! -f $ddest)) {
                 $ddest = cleanfile($buildd, $_, $blddir);
-                if ($unified_info{rename}->{$ddest}) {
-                    $ddest = $unified_info{rename}->{$ddest};
-                }
             }
             foreach (@{$depends{$dest}}) {
                 my $d = cleanfile($sourced, $_, $blddir);
@@ -2154,11 +2071,7 @@ EOF
                 # should be added back after treatment.
                 $d =~ /(\.a)?$/;
                 my $e = $1 // "";
-                $d = $`;
-                if ($unified_info{rename}->{$d}) {
-                    $d = $unified_info{rename}->{$d};
-                }
-                $d .= $e;
+                $d = $`.$e;
                 $unified_info{depends}->{$ddest}->{$d} = 1;
             }
         }
@@ -2171,9 +2084,6 @@ EOF
             # a generated file in the build tree.
             if ($ddest eq $src_configdata || ! -f $ddest) {
                 $ddest = cleanfile($buildd, $_, $blddir);
-                if ($unified_info{rename}->{$ddest}) {
-                    $ddest = $unified_info{rename}->{$ddest};
-                }
             }
             foreach (@{$includes{$dest}}) {
                 my $is = cleandir($sourced, $_, $blddir);

build.info

@@ -2,15 +2,6 @@
 # %skipdir there for further explanations.
 SUBDIRS=crypto ssl apps test util tools fuzz engines
 
-{-
-     my @sover = split(/\./, $config{shlib_version});
-     our $sover_filename;
-     $sover_filename = join('.', @sover)
-         if $config{target} =~ /^mingw/ || $config{target} =~ /^VC-/;
-     $sover_filename = join('', map { sprintf "%02d", $_ } @sover)
-         if $config{target} =~ /^vms/;
-     "";
--}
 LIBS=libcrypto libssl
 INCLUDE[libcrypto]=. crypto/include include
 INCLUDE[libssl]=. include
@@ -44,26 +35,3 @@ IF[{- $config{target} =~ /^(?:Cygwin|mingw|VC-)/ -}]
   SHARED_SOURCE[libcrypto]=libcrypto.rc
   SHARED_SOURCE[libssl]=libssl.rc
 ENDIF
-
-IF[{- $config{target} =~ /^Cygwin/ -}]
- SHARED_NAME[libcrypto]=cygcrypto-{- $sover_filename -}
- SHARED_NAME[libssl]=cygssl-{- $sover_filename -}
-ELSIF[{- $config{target} =~ /^mingw/ -}]
- SHARED_NAME[libcrypto]=libcrypto-{- $sover_filename -}{- $config{target} eq "mingw64" ? "-x64" : "" -}
- SHARED_NAME[libssl]=libssl-{- $sover_filename -}{- $config{target} eq "mingw64" ? "-x64" : "" -}
-ELSIF[{- $config{target} =~ /^VC-/ -}]
- SHARED_NAME[libcrypto]=libcrypto-{- $sover_filename -}{- $target{multilib} -}
- SHARED_NAME[libssl]=libssl-{- $sover_filename -}{- $target{multilib} -}
-ENDIF
-
-# VMS has a cultural standard where all libraries are prefixed.
-# For OpenSSL, the choice is 'ossl$' (this prefix was claimed in a
-# conversation with VSI, Tuesday January 26 2016)
-# Also, it seems it's usual to have the pointer size the libraries
-# were built for as part of the name.
-IF[{- $config{target} =~ /^vms/ -}]
- RENAME[libcrypto]=ossl$libcrypto{- $target{pointer_size} -}
- RENAME[libssl]=ossl$libssl{- $target{pointer_size} -}
- SHARED_NAME[libcrypto]=ossl$libcrypto{- $sover_filename -}_shr{- $target{pointer_size} -}
- SHARED_NAME[libssl]=ossl$libssl{- $sover_filename -}_shr{- $target{pointer_size} -}
-ENDIF