[src/trunk]: src/usr.bin/make Add support for .dinclude

[sjg <sjg%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a50f60742760
branches:  trunk
changeset: 813782:a50f60742760
user:      sjg <sjg%NetBSD.org@localhost>
date:      Thu Feb 18 05:02:49 2016 +0000

description:
Add support for .dinclude

Like .sinclude missing file will be ignored.
Like .depend stale dependencies will be ignored.
Allows better implementation of auto depend.

Reviewed by: christos
Requested by: Bryan Drewery at FreeBSD.

diffstat:

 usr.bin/make/make.1  |  12 ++++++++++--
 usr.bin/make/parse.c |  19 ++++++++++++-------
 2 files changed, 22 insertions(+), 9 deletions(-)

diffs (127 lines):

diff -r f60f18eaa9f8 -r a50f60742760 usr.bin/make/make.1
--- a/usr.bin/make/make.1       Thu Feb 18 05:01:39 2016 +0000
+++ b/usr.bin/make/make.1       Thu Feb 18 05:02:49 2016 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: make.1,v 1.249 2015/06/05 07:33:40 wiz Exp $
+.\"    $NetBSD: make.1,v 1.250 2016/02/18 05:02:49 sjg Exp $
 .\"
 .\" Copyright (c) 1990, 1993
 .\"    The Regents of the University of California.  All rights reserved.
@@ -29,7 +29,7 @@
 .\"
 .\"    from: @(#)make.1        8.4 (Berkeley) 3/19/94
 .\"
-.Dd June 4, 2015
+.Dd February 17, 2015
 .Dt MAKE 1
 .Os
 .Sh NAME
@@ -1530,12 +1530,20 @@
 .Nm
 .Ql include file ...
 is also accepted.
+.Pp
 If the include statement is written as
 .Cm .-include
 or as
 .Cm .sinclude
 then errors locating and/or opening include files are ignored.
 .Pp
+If the include statement is written as
+.Cm .dinclude
+not only are errors locating and/or opening include files ignored,
+but stale dependencies within the included file will be ignored
+just like
+.Va .MAKE.DEPENDFILE .
+.Pp
 Conditional expressions are also preceded by a single dot as the first
 character of a line.
 The possible conditionals are as follows:
diff -r f60f18eaa9f8 -r a50f60742760 usr.bin/make/parse.c
--- a/usr.bin/make/parse.c      Thu Feb 18 05:01:39 2016 +0000
+++ b/usr.bin/make/parse.c      Thu Feb 18 05:02:49 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: parse.c,v 1.209 2016/01/17 17:45:21 christos Exp $     */
+/*     $NetBSD: parse.c,v 1.210 2016/02/18 05:02:49 sjg Exp $  */
 
 /*
  * Copyright (c) 1988, 1989, 1990, 1993
@@ -69,14 +69,14 @@
  */
 
 #ifndef MAKE_NATIVE
-static char rcsid[] = "$NetBSD: parse.c,v 1.209 2016/01/17 17:45:21 christos Exp $";
+static char rcsid[] = "$NetBSD: parse.c,v 1.210 2016/02/18 05:02:49 sjg Exp $";
 #else
 #include <sys/cdefs.h>
 #ifndef lint
 #if 0
 static char sccsid[] = "@(#)parse.c    8.3 (Berkeley) 3/19/94";
 #else
-__RCSID("$NetBSD: parse.c,v 1.209 2016/01/17 17:45:21 christos Exp $");
+__RCSID("$NetBSD: parse.c,v 1.210 2016/02/18 05:02:49 sjg Exp $");
 #endif
 #endif /* not lint */
 #endif
@@ -157,6 +157,7 @@
     int             lineno;         /* current line number in file */
     int             first_lineno;   /* line number of start of text */
     int             cond_depth;     /* 'if' nesting when file opened */
+    Boolean         depending;      /* state of doing_depend on EOF */
     char            *P_str;         /* point to base of string buffer */
     char            *P_ptr;         /* point to next char of string buffer */
     char            *P_end;         /* point to the end of string buffer */
@@ -2139,7 +2140,7 @@
  */
 
 static void
-Parse_include_file(char *file, Boolean isSystem, int silent)
+Parse_include_file(char *file, Boolean isSystem, Boolean depinc, int silent)
 {
     struct loadedfile *lf;
     char          *fullname;   /* full pathname of file */
@@ -2239,6 +2240,9 @@
     /* Start reading from this file next */
     Parse_SetInput(fullname, 0, -1, loadedfile_nextbuf, lf);
     curFile->lf = lf;
+    curFile->depending = doing_depend; /* restore this on EOF */
+    if (depinc)
+       doing_depend = depinc;          /* only turn it on */
 }
 
 static void
@@ -2288,7 +2292,7 @@
      */
     file = Var_Subst(NULL, file, VAR_CMD, FALSE, TRUE, FALSE);
 
-    Parse_include_file(file, endc == '>', silent);
+    Parse_include_file(file, endc == '>', (*line == 'd'), silent);
     free(file);
 }
 
@@ -2532,7 +2536,7 @@
        else
            done = 1;
 
-       Parse_include_file(file, FALSE, silent);
+       Parse_include_file(file, FALSE, FALSE, silent);
     }
     free(all_files);
 }
@@ -2610,6 +2614,7 @@
 
     assert(curFile->nextbuf != NULL);
 
+    doing_depend = curFile->depending; /* restore this */
     /* get next input buffer, if any */
     ptr = curFile->nextbuf(curFile->nextbuf_arg, &len);
     curFile->P_ptr = ptr;
@@ -2972,7 +2977,7 @@
                    continue;
                }
                if (strncmp(cp, "include", 7) == 0 ||
-                       ((cp[0] == 's' || cp[0] == '-') &&
+                       ((cp[0] == 'd' || cp[0] == 's' || cp[0] == '-') &&
                            strncmp(&cp[1], "include", 7) == 0)) {
                    ParseDoInclude(cp);
                    continue;