Pass down inclusion directories to source file generators

The source file generators sometimes use $(CC) to post-process
generated source, and getting the inclusion directories may be
necessary at times, so we pass them down.

RT#4406
Reviewed-by: NRich Salz <rsalz@openssl.org>

Configurations/common.tmpl

@@ -32,17 +32,24 @@
      @newlist;
  }
 
+ # dogenerate is responsible for producing all the recipes that build
+ # generated source files.  It recurses in case a dependency is also a
+ # generated source file.
  sub dogenerate {
      my $src = shift;
      return "" if $cache{$src};
+     my $obj = shift;
+     my $bin = shift;
      my %opts = @_;
      if ($unified_info{generate}->{$src}) {
          $OUT .= generatesrc(src => $src,
                              generator => $unified_info{generate}->{$src},
                              deps => $unified_info{depends}->{$src},
+                             incs => [ @{$unified_info{includes}->{$bin}},
+                                       @{$unified_info{includes}->{$obj}} ],
                              %opts);
          foreach (@{$unified_info{depends}->{$src}}) {
-             dogenerate($_, %opts);
+             dogenerate($_, $obj, $bin, %opts);
          }
      }
      $cache{$src} = 1;
@@ -65,7 +72,7 @@
                          %opts);
          foreach ((@{$unified_info{sources}->{$obj}},
                    @{$unified_info{depends}->{$obj}})) {
-             dogenerate($_, %opts);
+             dogenerate($_, $obj, $bin, %opts);
          }
      }
      $cache{$obj} = 1;

Configurations/unix-Makefile.tmpl

@@ -825,6 +825,7 @@ configdata.pm: {- $config{build_file_template} -} $(SRCDIR)/Configurations/commo
   sub generatesrc {
       my %args = @_;
       my $generator = join(" ", @{$args{generator}});
+      my $incs = join("", map { " -I".$_ } @{$args{incs}});
 
       if ($args{src} !~ /\.[sS]$/) {
           return <<"EOF";
@@ -851,7 +852,7 @@ EOF
 $target: $args{generator}->[0]
 	( trap "rm -f \$@.S" INT; \\
 	  $generator \$@.S; \\
-	  \$(CC) \$(CFLAGS) -E -P \$@.S > \$@ && rm -f \$@.S )
+	  \$(CC) \$(CFLAGS) $incs -E -P \$@.S > \$@ && rm -f \$@.S )
 EOF
               }
               # Otherwise....
@@ -862,7 +863,7 @@ EOF
           }
           return <<"EOF";
 $args{src}: $args{generator}->[0]
-	\$(CC) \$(CFLAGS) -E -P \$< > \$@
+	\$(CC) \$(CFLAGS) $incs -E -P \$< > \$@
 EOF
       }
   }

Configurations/windows-makefile.tmpl

@@ -171,6 +171,7 @@ configdata.pm: {- $config{build_file_template} -} $(SRCDIR)\Configure
       my %args = @_;
       (my $target = $args{src}) =~ s/\.[sS]$/.asm/;
       my $generator = join(" ", @{$args{generator}});
+      my $incs = join("", map { " /I ".$_ } @{$args{incs}});
 
       if ($target !~ /\.asm$/) {
           return <<"EOF";
@@ -195,7 +196,7 @@ $target: $args{generator}->[0]
 	set ASM=\$(AS)
 	set CC=\$(CC)
 	$generator \$@.S
-	\$(CC) \$(CFLAGS) /EP /C \$@.S > \$@
+	\$(CC) \$(CFLAGS) $incs /EP /C \$@.S > \$@
         del /Q \$@.S
 EOF
               }
@@ -209,7 +210,7 @@ EOF
           }
           return <<"EOF";
 $target: $args{generator}->[0]
-	\$(CC) \$(CFLAGS) /EP /C \$< > \$@
+	\$(CC) \$(CFLAGS) $incs /EP /C \$< > \$@
 EOF
       }
   }