xref: /illumos-gate/usr/src/cmd/make/bin/depvar.cc (revision 10d63b7d)
1*10d63b7dSRichard Lowe /*
2*10d63b7dSRichard Lowe  * CDDL HEADER START
3*10d63b7dSRichard Lowe  *
4*10d63b7dSRichard Lowe  * The contents of this file are subject to the terms of the
5*10d63b7dSRichard Lowe  * Common Development and Distribution License (the "License").
6*10d63b7dSRichard Lowe  * You may not use this file except in compliance with the License.
7*10d63b7dSRichard Lowe  *
8*10d63b7dSRichard Lowe  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9*10d63b7dSRichard Lowe  * or http://www.opensolaris.org/os/licensing.
10*10d63b7dSRichard Lowe  * See the License for the specific language governing permissions
11*10d63b7dSRichard Lowe  * and limitations under the License.
12*10d63b7dSRichard Lowe  *
13*10d63b7dSRichard Lowe  * When distributing Covered Code, include this CDDL HEADER in each
14*10d63b7dSRichard Lowe  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15*10d63b7dSRichard Lowe  * If applicable, add the following below this CDDL HEADER, with the
16*10d63b7dSRichard Lowe  * fields enclosed by brackets "[]" replaced with your own identifying
17*10d63b7dSRichard Lowe  * information: Portions Copyright [yyyy] [name of copyright owner]
18*10d63b7dSRichard Lowe  *
19*10d63b7dSRichard Lowe  * CDDL HEADER END
20*10d63b7dSRichard Lowe  */
21*10d63b7dSRichard Lowe /*
22*10d63b7dSRichard Lowe  * Copyright 1995 Sun Microsystems, Inc. All rights reserved.
23*10d63b7dSRichard Lowe  * Use is subject to license terms.
24*10d63b7dSRichard Lowe  */
25*10d63b7dSRichard Lowe 
26*10d63b7dSRichard Lowe /*
27*10d63b7dSRichard Lowe  * Included files
28*10d63b7dSRichard Lowe  */
29*10d63b7dSRichard Lowe #include <libintl.h>
30*10d63b7dSRichard Lowe 
31*10d63b7dSRichard Lowe #include <mk/defs.h>
32*10d63b7dSRichard Lowe #include <mksh/misc.h>		/* getmem() */
33*10d63b7dSRichard Lowe 
34*10d63b7dSRichard Lowe /*
35*10d63b7dSRichard Lowe  * This file deals with "Dependency Variables".
36*10d63b7dSRichard Lowe  * The "-V var" command line option is used to indicate
37*10d63b7dSRichard Lowe  * that var is a dependency variable.  Used in conjunction with
38*10d63b7dSRichard Lowe  * the -P option the user is asking if the named variables affect
39*10d63b7dSRichard Lowe  * the dependencies of the given target.
40*10d63b7dSRichard Lowe  */
41*10d63b7dSRichard Lowe 
42*10d63b7dSRichard Lowe struct _Depvar {
43*10d63b7dSRichard Lowe 	Name		name;		/* Name of variable */
44*10d63b7dSRichard Lowe 	struct _Depvar	*next;		/* Linked list */
45*10d63b7dSRichard Lowe 	Boolean		cmdline;	/* Macro defined on the cmdline? */
46*10d63b7dSRichard Lowe };
47*10d63b7dSRichard Lowe 
48*10d63b7dSRichard Lowe typedef	struct _Depvar	*Depvar;
49*10d63b7dSRichard Lowe 
50*10d63b7dSRichard Lowe static	Depvar		depvar_list;
51*10d63b7dSRichard Lowe static	Depvar		*bpatch = &depvar_list;
52*10d63b7dSRichard Lowe static	Boolean		variant_deps;
53*10d63b7dSRichard Lowe 
54*10d63b7dSRichard Lowe /*
55*10d63b7dSRichard Lowe  * Add a name to the list.
56*10d63b7dSRichard Lowe  */
57*10d63b7dSRichard Lowe 
58*10d63b7dSRichard Lowe void
depvar_add_to_list(Name name,Boolean cmdline)59*10d63b7dSRichard Lowe depvar_add_to_list(Name name, Boolean cmdline)
60*10d63b7dSRichard Lowe {
61*10d63b7dSRichard Lowe 	Depvar		dv;
62*10d63b7dSRichard Lowe 
63*10d63b7dSRichard Lowe 	dv = ALLOC(Depvar);
64*10d63b7dSRichard Lowe 	dv->name = name;
65*10d63b7dSRichard Lowe 	dv->next = NULL;
66*10d63b7dSRichard Lowe 	dv->cmdline = cmdline;
67*10d63b7dSRichard Lowe 	*bpatch = dv;
68*10d63b7dSRichard Lowe 	bpatch = &dv->next;
69*10d63b7dSRichard Lowe }
70*10d63b7dSRichard Lowe 
71*10d63b7dSRichard Lowe /*
72*10d63b7dSRichard Lowe  * The macro `name' has been used in either the left-hand or
73*10d63b7dSRichard Lowe  * right-hand side of a dependency.  See if it is in the
74*10d63b7dSRichard Lowe  * list.  Two things are looked for.  Names given as args
75*10d63b7dSRichard Lowe  * to the -V list are checked so as to set the same/differ
76*10d63b7dSRichard Lowe  * output for the -P option.  Names given as macro=value
77*10d63b7dSRichard Lowe  * command-line args are checked and, if found, an NSE
78*10d63b7dSRichard Lowe  * warning is produced.
79*10d63b7dSRichard Lowe  */
80*10d63b7dSRichard Lowe void
depvar_dep_macro_used(Name name)81*10d63b7dSRichard Lowe depvar_dep_macro_used(Name name)
82*10d63b7dSRichard Lowe {
83*10d63b7dSRichard Lowe 	Depvar		dv;
84*10d63b7dSRichard Lowe 
85*10d63b7dSRichard Lowe 	for (dv = depvar_list; dv != NULL; dv = dv->next) {
86*10d63b7dSRichard Lowe 		if (name == dv->name) {
87*10d63b7dSRichard Lowe 			variant_deps = true;
88*10d63b7dSRichard Lowe 			break;
89*10d63b7dSRichard Lowe 		}
90*10d63b7dSRichard Lowe 	}
91*10d63b7dSRichard Lowe }
92*10d63b7dSRichard Lowe 
93*10d63b7dSRichard Lowe 
94*10d63b7dSRichard Lowe /*
95*10d63b7dSRichard Lowe  * Print the results.  If any of the Dependency Variables
96*10d63b7dSRichard Lowe  * affected the dependencies then the dependencies potentially
97*10d63b7dSRichard Lowe  * differ because of these variables.
98*10d63b7dSRichard Lowe  */
99*10d63b7dSRichard Lowe void
depvar_print_results(void)100*10d63b7dSRichard Lowe depvar_print_results(void)
101*10d63b7dSRichard Lowe {
102*10d63b7dSRichard Lowe 	if (variant_deps) {
103*10d63b7dSRichard Lowe 		printf(gettext("differ\n"));
104*10d63b7dSRichard Lowe 	} else {
105*10d63b7dSRichard Lowe 		printf(gettext("same\n"));
106*10d63b7dSRichard Lowe 	}
107*10d63b7dSRichard Lowe }
108*10d63b7dSRichard Lowe 
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