build.info: Make it possible to have more than one item in KEYWORD[]

So far, the "index" part of KEYWORD[whatever] could only handle one
item.  There are cases, however, where we want to add the exact same
value to multiple items.  This is especially helpful if a variable
that may have multi-item values are used in the "index" part.

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/11185)

2 files changed, 98 insertions, 88 deletions

diff --git a/Configure b/Configure
index 7b3e6ccbd3..737a471c1d 100755
--- a/Configure
+++ b/Configure
@@ -1857,6 +1857,34 @@ if ($builder eq "unified") {
             }
         };
 
+        # Support for pushing values on multiple indexes of a given hash
+        # array.
+        my $push_to = sub {
+            my $valueref = shift;
+            my $index_str = shift; # May be undef or empty
+            my $attrref = shift;   # May be undef
+            my $attr_str = shift;
+            my @values = @_;
+
+            if (defined $index_str) {
+                my @indexes = ( '' );
+                if ($index_str !~ m|^\s*$|) {
+                    @indexes = tokenize($index_str);
+                }
+                foreach (@indexes) {
+                    push @{$valueref->{$_}}, @values;
+                    if (defined $attrref) {
+                        $handle_attributes->($attr_str, \$$attrref->{$_},
+                                             @values);
+                    }
+                }
+            } else {
+                push @$valueref, @values;
+                $handle_attributes->($attr_str, $attrref, @values)
+                    if defined $attrref;
+            }
+        };
+
         # We want to detect configdata.pm in the source tree, so we
         # don't use it if the build tree is different.
         my $src_configdata = cleanfile($srcdir, "configdata.pm", $blddir);
@@ -1937,88 +1965,64 @@ if ($builder eq "unified") {
                 }
             },
             qr/^\s* PROGRAMS ${attribs_re} \s* =  ${value_re} $/x
-            => sub {
-                if (!@skip || $skip[$#skip] > 0) {
-                    my @p = tokenize($expand_variables->($+{VALUE}));
-                    push @programs, @p;
-                    $handle_attributes->($+{ATTRIBS},
-                                         \$attributes{programs},
-                                         @p);
-                }
-            },
+            => sub { $push_to->(\@programs, undef,
+                                \$attributes{programs}, $+{ATTRIBS},
+                                tokenize($expand_variables->($+{VALUE})))
+                         if !@skip || $skip[$#skip] > 0; },
             qr/^\s* LIBS ${attribs_re} \s* =  ${value_re} $/x
-            => sub {
-                if (!@skip || $skip[$#skip] > 0) {
-                    my @l = tokenize($expand_variables->($+{VALUE}));
-                    push @libraries, @l;
-                    $handle_attributes->($+{ATTRIBS},
-                                         \$attributes{libraries},
-                                         @l);
-                }
-            },
+            => sub { $push_to->(\@libraries, undef,
+                                \$attributes{libraries}, $+{ATTRIBS},
+                                tokenize($expand_variables->($+{VALUE})))
+                         if !@skip || $skip[$#skip] > 0; },
             qr/^\s* MODULES ${attribs_re} \s* =  ${value_re} $/x
-            => sub {
-                if (!@skip || $skip[$#skip] > 0) {
-                    my @m = tokenize($expand_variables->($+{VALUE}));
-                    push @modules, @m;
-                    $handle_attributes->($+{ATTRIBS},
-                                         \$attributes{modules},
-                                         @m);
-                }
-            },
+            => sub { $push_to->(\@modules, undef,
+                                \$attributes{modules}, $+{ATTRIBS},
+                                tokenize($expand_variables->($+{VALUE})))
+                         if !@skip || $skip[$#skip] > 0; },
             qr/^\s* SCRIPTS ${attribs_re} \s* =  ${value_re} $/x
-            => sub {
-                if (!@skip || $skip[$#skip] > 0) {
-                    my @s = tokenize($expand_variables->($+{VALUE}));
-                    push @scripts, @s;
-                    $handle_attributes->($+{ATTRIBS},
-                                         \$attributes{scripts},
-                                         @s);
-                }
-            },
+            => sub { $push_to->(\@scripts, undef,
+                                \$attributes{scripts}, $+{ATTRIBS},
+                                tokenize($expand_variables->($+{VALUE})))
+                         if !@skip || $skip[$#skip] > 0; },
             qr/^\s* HTMLDOCS ${index_re} = ${value_re} $/x
-            => sub { push @{$htmldocs{$expand_variables->($+{INDEX})}},
-                         tokenize($expand_variables->($+{VALUE}))
-                         if !@skip || $skip[$#skip] > 0 },
+            => sub { $push_to->(\%htmldocs, $expand_variables->($+{INDEX}),
+                                undef, undef,
+                                tokenize($expand_variables->($+{VALUE})))
+                         if !@skip || $skip[$#skip] > 0; },
             qr/^\s* MANDOCS ${index_re} = ${value_re} $/x
-            => sub { push @{$mandocs{$expand_variables->($+{INDEX})}},
-                         tokenize($expand_variables->($+{VALUE}))
-                         if !@skip || $skip[$#skip] > 0 },
-            qr/^\s* ORDINALS ${index_re} = ${value_re} $/x
-            => sub { push @{$ordinals{$expand_variables->($+{INDEX})}},
-                         tokenize($expand_variables->($+{VALUE}))
-                         if !@skip || $skip[$#skip] > 0 },
+            => sub { $push_to->(\%mandocs, $expand_variables->($+{INDEX}),
+                                undef, undef,
+                                tokenize($expand_variables->($+{VALUE})))
+                         if !@skip || $skip[$#skip] > 0; },
             qr/^\s* SOURCE ${index_re} = ${value_re} $/x
-            => sub { push @{$sources{$expand_variables->($+{INDEX})}},
-                         tokenize($expand_variables->($+{VALUE}))
-                         if !@skip || $skip[$#skip] > 0 },
+            => sub { $push_to->(\%sources, $expand_variables->($+{INDEX}),
+                                undef, undef,
+                                tokenize($expand_variables->($+{VALUE})))
+                         if !@skip || $skip[$#skip] > 0; },
             qr/^\s* SHARED_SOURCE ${index_re} = ${value_re} $/x
-            => sub { push @{$shared_sources{$expand_variables->($+{INDEX})}},
-                         tokenize($expand_variables->($+{VALUE}))
-                         if !@skip || $skip[$#skip] > 0 },
+            => sub { $push_to->(\%shared_sources, $expand_variables->($+{INDEX}),
+                                undef, undef,
+                                tokenize($expand_variables->($+{VALUE})))
+                         if !@skip || $skip[$#skip] > 0; },
             qr/^\s* INCLUDE ${index_re} = ${value_re} $/x
-            => sub { push @{$includes{$expand_variables->($+{INDEX})}},
-                         tokenize($expand_variables->($+{VALUE}))
-                         if !@skip || $skip[$#skip] > 0 },
+            => sub { $push_to->(\%includes, $expand_variables->($+{INDEX}),
+                                undef, undef,
+                                tokenize($expand_variables->($+{VALUE})))
+                         if !@skip || $skip[$#skip] > 0; },
             qr/^\s* DEFINE ${index_re} = ${value_re} $/x
-            => sub { push @{$defines{$expand_variables->($+{INDEX})}},
-                         tokenize($expand_variables->($+{VALUE}))
-                         if !@skip || $skip[$#skip] > 0 },
+            => sub { $push_to->(\%defines, $expand_variables->($+{INDEX}),
+                                undef, undef,
+                                tokenize($expand_variables->($+{VALUE})))
+                         if !@skip || $skip[$#skip] > 0; },
             qr/^\s* DEPEND ${index_re} ${attribs_re} = ${value_re} $/x
-            => sub {
-                if (!@skip || $skip[$#skip] > 0) {
-                    my $i = $expand_variables->($+{INDEX});
-                    my @d = tokenize($expand_variables->($+{VALUE}));
-                    push @{$depends{$i}}, @d;
-                    $handle_attributes->($+{ATTRIBS},
-                                         \$attributes{depends}->{$i},
-                                         @d);
-                }
-            },
+            => sub { $push_to->(\%depends, $expand_variables->($+{INDEX}),
+                                \$attributes{depends}, $+{ATTRIBS},
+                                tokenize($expand_variables->($+{VALUE})))
+                         if !@skip || $skip[$#skip] > 0; },
             qr/^\s* GENERATE ${index_re} = ${value_re} $/x
-            => sub { push @{$generate{$expand_variables->($+{INDEX})}},
-                         $+{VALUE}
-                         if !@skip || $skip[$#skip] > 0 },
+            => sub { $push_to->(\%generate, $expand_variables->($+{INDEX}),
+                                undef, undef, $+{VALUE})
+                         if !@skip || $skip[$#skip] > 0; },
             qr/^\s* (?:\#.*)? $/x => sub { },
             "OTHERWISE" => sub { die "Something wrong with this line:\n$_\nat $sourced/$f" },
             "BEFORE" => sub {
diff --git a/doc/internal/man7/build.info.pod b/doc/internal/man7/build.info.pod
index 2be709f770..c2020a432f 100644
--- a/doc/internal/man7/build.info.pod
+++ b/doc/internal/man7/build.info.pod
@@ -24,7 +24,7 @@ B<MODULES=> I<name> ...
 
 B<SCRIPTS=> I<name> ...
 
-B<DEPEND[>I<item>B<]=> I<otheritem> ...
+B<DEPEND[>I<items>B<]=> I<otheritem> ...
 
 B<GENERATE[>I<item>B<]=> I<generator> I<generator-args> ...
 
@@ -32,9 +32,9 @@ B<SOURCE[>I<item>B<]=> I<file> ...
 
 B<SHARED_SOURCE[>I<item>B<]=> I<file> ...
 
-B<DEFINE[>I<item>B<]=> I<name>[B<=>I<value>] ...
+B<DEFINE[>I<items>B<]=> I<name>[B<=>I<value>] ...
 
-B<INCLUDE[>I<item>B<]=> I<dir> ...
+B<INCLUDE[>I<items>B<]=> I<dir> ...
 
 B<$>I<VARIABLE>B<=>I<value>
 
@@ -122,7 +122,7 @@ syntax is one of:
 
 =item B<I<KEYWORD>> B<=> I<value> ...
 
-=item B<I<KEYWORD>[>I<item>B<]> B<=> I<value> ...
+=item B<I<KEYWORD>[>I<items>B<]> B<=> I<value> ...
 
 =back
 
@@ -154,8 +154,14 @@ F<foo.c> and F<details.c>, and that it depends on the library
 C<libcookie> (in other words, the library will be included when
 linking that program together).
 
-For any indexed statement for which the item hasn't been specified
-through any plain statement, or where the item exists but the indexed
+Multiple space separated items are allowed too:
+
+    SOURCE[foo]=foo.c
+    SOURCE[details]=details.c
+    DEPEND[foo details]=libcookie
+
+For any indexed statement for which the items haven't been specified
+through any plain statement, or where the items exists but the indexed
 statement does not apply, the value is simply ignored by the build
 file generators.
 
@@ -169,7 +175,7 @@ variations on how they are treated.
 =item B<I<KEYWORD>{> I<attrib> | I<attrib>B<=>I<attrib-value> [,...]B<}>
 B<=> I<value> ...
 
-=item B<I<KEYWORD>[>I<item>B<]{> I<attrib> | I<attrib>B<=>I<attrib-value>
+=item B<I<KEYWORD>[>I<items>B<]{> I<attrib> | I<attrib>B<=>I<attrib-value>
 [,...]B<}> B<=> I<value> ...
 
 =back
@@ -411,15 +417,15 @@ C<noinst>, while the script C<bar> will.
 
 =over 4
 
-=item B<DEPEND[>I<item>B<]> B<=> I<file> ...
+=item B<DEPEND[>I<items>B<]> B<=> I<file> ...
 
-Collects dependencies, where I<item> depends on the given I<file>s.
+Collects dependencies, where I<items> depend on the given I<file>s.
 
-As a special case, the I<item> may be empty, for which the build file
+As a special case, the I<items> may be empty, for which the build file
 generators should make the whole build depend on the given I<file>s,
-rather than some specific I<item>.
+rather than the specific I<items>.
 
-The I<item> may be any program, library, module, script, or any
+The I<items> may be any program, library, module, script, or any
 filename used as a value anywhere.
 
 B<DEPEND> statements may have attributes, which apply to each
@@ -473,19 +479,19 @@ given with B<LIBS> or B<MODULES>.  For libraries, the given filenames
 are only used for their shared form, so if the item is a library name
 ending with C<.a>, the filenames will be ignored.
 
-=item B<DEFINE[>I<item>B<]> B<=> I<name>[B<=>I<value>] ...
+=item B<DEFINE[>I<items>B<]> B<=> I<name>[B<=>I<value>] ...
 
 Collects I<name> / I<value> pairs (or just I<name> with no defined
-value if no I<value> is given) associated with I<item>.
+value if no I<value> is given) associated with I<items>.
 
 The build file generators will decide what to do with them.  For
 example, these pairs should become C macro definitions whenever a
 C<.c> file is built into an object file.
 
-=item B<INCLUDE[>I<item>B<]> B<=> I<dir> ...
+=item B<INCLUDE[>I<items>B<]> B<=> I<dir> ...
 
 Collects inclusion directories that will be used when building the
-I<item> components (object files and whatever else).  This is used at
+I<items> components (object files and whatever else).  This is used at
 the discretion of the build file generators.
 
 =back
@@ -568,7 +574,7 @@ the exception of conditional statements and variable assignments.
 
 =item "indexed statement"
 
-Any F<build.info> statement of the form B<I<KEYWORD>[>I<item>B<]=>I<values>,
+Any F<build.info> statement of the form B<I<KEYWORD>[>I<items>B<]=>I<values>,
 with the exception of conditional statements.
 
 =item "intermediate file"