X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ian/git?p=subdirmk.git;a=blobdiff_plain;f=subdirmk%2Fgenerate;h=3208c8d9b333b0ec47355342c244fbd2ce994e5c;hp=f353702fbb78a5277591bec73e505fbcf499afee;hb=9afe863051fe0ae9d2d4e88db5fd95071fb9e7c4;hpb=f487d4baf3687bc013b5c38193002e6b8bc885e6

diff --git a/subdirmk/generate b/subdirmk/generate
index f353702..3208c8d 100755
--- a/subdirmk/generate
+++ b/subdirmk/generate
@@ -103,11 +103,11 @@ Makefile FORCE-ALWAYS-RUN:
 END
 }
 
-sub process_input_mk ($$$$$$$);
-sub process_input_mk ($$$$$$$) {
+sub process_input_mk ($$$$$$$$);
+sub process_input_mk ($$$$$$$$) {
     my ($dir_prefix, $dir_suffix, $dir_name,
 	$var_prefix, $targets,
-	$f, $esclitr) = @_;
+	$f, $esclitr, $enoent_ok) = @_;
 
     my $caps_re = qr{[A-Z][0-9_A-Z]*(?=\W)};
     my $lc_re = qr{[a-z][-+,0-9_a-z]*(?=\W)};
@@ -119,8 +119,15 @@ sub process_input_mk ($$$$$$$) {
     };
     $set_esc->();
 
-    open I, '<', $f or die "open $f: $!\n";
-    while (<I>) {
+    my $input = new IO::File $f, '<';
+    if (!$input) {
+	die "open $f: $!\n" unless $!==ENOENT && $enoent_ok;
+	return;
+    }
+    while (<$input>) {
+	if (s#^\s*$esc\:##) {
+	    $buffering_output='';
+	}
 	for (;;) {
 	    unless (s{^(.*?)(\\)?(?=$esc)}{}) { o $_; last; }
 	    o $1;
@@ -161,8 +168,23 @@ sub process_input_mk ($$$$$$$) {
 		die "bad escape $$esclitr$_ ";
 	    }
 	}
+	if (defined $buffering_output) {
+	    $_=$buffering_output;
+	    $buffering_output=undef;
+	    if (m#^(-?)include\s+(\S+)\s+$#) {
+		my $subf = "$srcdir/$2";
+		o "MAKEFILE_TEMPLATES += $subf\n";
+		process_input_mk($dir_prefix, $dir_suffix, $dir_name,
+				 $var_prefix, $targets,
+				 $subf, $esclitr, $subf);
+		o "\n";
+	    } else {
+		die "unknown directive $_ ";
+	    }
+	}
     }
-    I->error and die "read $f: $!\n";
+    $input->error and die "read $f: $!\n";
+    close $input or die "close $f: $!\n";
 }
 
 sub filter_subdir_mk ($$$$$) {
@@ -177,7 +199,7 @@ sub filter_subdir_mk ($$$$$) {
 	       "${srcdir}/Perdir.mk.in") {
 	process_input_mk($dir_prefix, $dir_suffix, $dir_name,
 			 $var_prefix, $targets,
-			 $f, \$esclit);
+			 $f, \$esclit, 0);
     }
 }