xref: /freebsd/contrib/bmake/make.h (revision 4232f826683298e85d469c0ef17259cecd13b2c7)
1 /*	$NetBSD: make.h,v 1.95 2014/09/07 20:55:34 joerg Exp $	*/
2 
3 /*
4  * Copyright (c) 1988, 1989, 1990, 1993
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * This code is derived from software contributed to Berkeley by
8  * Adam de Boor.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  * 3. Neither the name of the University nor the names of its contributors
19  *    may be used to endorse or promote products derived from this software
20  *    without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32  * SUCH DAMAGE.
33  *
34  *	from: @(#)make.h	8.3 (Berkeley) 6/13/95
35  */
36 
37 /*
38  * Copyright (c) 1989 by Berkeley Softworks
39  * All rights reserved.
40  *
41  * This code is derived from software contributed to Berkeley by
42  * Adam de Boor.
43  *
44  * Redistribution and use in source and binary forms, with or without
45  * modification, are permitted provided that the following conditions
46  * are met:
47  * 1. Redistributions of source code must retain the above copyright
48  *    notice, this list of conditions and the following disclaimer.
49  * 2. Redistributions in binary form must reproduce the above copyright
50  *    notice, this list of conditions and the following disclaimer in the
51  *    documentation and/or other materials provided with the distribution.
52  * 3. All advertising materials mentioning features or use of this software
53  *    must display the following acknowledgement:
54  *	This product includes software developed by the University of
55  *	California, Berkeley and its contributors.
56  * 4. Neither the name of the University nor the names of its contributors
57  *    may be used to endorse or promote products derived from this software
58  *    without specific prior written permission.
59  *
60  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
61  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
62  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
63  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
64  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
65  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
66  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
67  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
68  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
69  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
70  * SUCH DAMAGE.
71  *
72  *	from: @(#)make.h	8.3 (Berkeley) 6/13/95
73  */
74 
75 /*-
76  * make.h --
77  *	The global definitions for pmake
78  */
79 
80 #ifndef _MAKE_H_
81 #define _MAKE_H_
82 
83 #ifdef HAVE_CONFIG_H
84 # include "config.h"
85 #endif
86 
87 #include <sys/types.h>
88 #include <sys/param.h>
89 
90 #include <ctype.h>
91 #include <stdio.h>
92 #include <stdlib.h>
93 #ifdef HAVE_STRING_H
94 #include <string.h>
95 #else
96 #include <strings.h>
97 #endif
98 #include <unistd.h>
99 #include <sys/cdefs.h>
100 
101 #if defined(__GNUC__)
102 #define	MAKE_GNUC_PREREQ(x, y)						\
103 	((__GNUC__ == (x) && __GNUC_MINOR__ >= (y)) ||			\
104 	 (__GNUC__ > (x)))
105 #else /* defined(__GNUC__) */
106 #define	MAKE_GNUC_PREREQ(x, y)	0
107 #endif /* defined(__GNUC__) */
108 
109 #if MAKE_GNUC_PREREQ(2, 7)
110 #define	MAKE_ATTR_UNUSED	__attribute__((__unused__))
111 #else
112 #define	MAKE_ATTR_UNUSED	/* delete */
113 #endif
114 
115 #if MAKE_GNUC_PREREQ(2, 5)
116 #define	MAKE_ATTR_DEAD		__attribute__((__noreturn__))
117 #elif defined(__GNUC__)
118 #define	MAKE_ATTR_DEAD		__volatile
119 #else
120 #define	MAKE_ATTR_DEAD		/* delete */
121 #endif
122 
123 #if MAKE_GNUC_PREREQ(2, 7)
124 #define MAKE_ATTR_PRINTFLIKE(fmtarg, firstvararg)	\
125 	    __attribute__((__format__ (__printf__, fmtarg, firstvararg)))
126 #else
127 #define MAKE_ATTR_PRINTFLIKE(fmtarg, firstvararg)	/* delete */
128 #endif
129 
130 #include "sprite.h"
131 #include "lst.h"
132 #include "hash.h"
133 #include "make-conf.h"
134 #include "buf.h"
135 #include "make_malloc.h"
136 
137 /*
138  * some vendors don't have this --sjg
139  */
140 #if defined(S_IFDIR) && !defined(S_ISDIR)
141 # define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
142 #endif
143 
144 #if defined(sun) && (defined(__svr4__) || defined(__SVR4))
145 #define POSIX_SIGNALS
146 #endif
147 
148 /*-
149  * The structure for an individual graph node. Each node has several
150  * pieces of data associated with it.
151  *	1) the name of the target it describes
152  *	2) the location of the target file in the file system.
153  *	3) the type of operator used to define its sources (qv. parse.c)
154  *	4) whether it is involved in this invocation of make
155  *	5) whether the target has been remade
156  *	6) whether any of its children has been remade
157  *	7) the number of its children that are, as yet, unmade
158  *	8) its modification time
159  *	9) the modification time of its youngest child (qv. make.c)
160  *	10) a list of nodes for which this is a source (parents)
161  *	11) a list of nodes on which this depends (children)
162  *	12) a list of nodes that depend on this, as gleaned from the
163  *	    transformation rules (iParents)
164  *	13) a list of ancestor nodes, which includes parents, iParents,
165  *	    and recursive parents of parents
166  *	14) a list of nodes of the same name created by the :: operator
167  *	15) a list of nodes that must be made (if they're made) before
168  *	    this node can be, but that do not enter into the datedness of
169  *	    this node.
170  *	16) a list of nodes that must be made (if they're made) before
171  *	    this node or any child of this node can be, but that do not
172  *	    enter into the datedness of this node.
173  *	17) a list of nodes that must be made (if they're made) after
174  *	    this node is, but that do not depend on this node, in the
175  *	    normal sense.
176  *	18) a Lst of ``local'' variables that are specific to this target
177  *	   and this target only (qv. var.c [$@ $< $?, etc.])
178  *	19) a Lst of strings that are commands to be given to a shell
179  *	   to create this target.
180  */
181 typedef struct GNode {
182     char            *name;     	/* The target's name */
183     char            *uname;    	/* The unexpanded name of a .USE node */
184     char    	    *path;     	/* The full pathname of the file */
185     int             type;      	/* Its type (see the OP flags, below) */
186 
187     int             flags;
188 #define REMAKE		0x1    	/* this target needs to be (re)made */
189 #define	CHILDMADE	0x2	/* children of this target were made */
190 #define FORCE		0x4	/* children don't exist, and we pretend made */
191 #define DONE_WAIT	0x8	/* Set by Make_ProcessWait() */
192 #define DONE_ORDER	0x10	/* Build requested by .ORDER processing */
193 #define FROM_DEPEND	0x20	/* Node created from .depend */
194 #define DONE_ALLSRC	0x40	/* We do it once only */
195 #define CYCLE		0x1000  /* Used by MakePrintStatus */
196 #define DONECYCLE	0x2000  /* Used by MakePrintStatus */
197     enum enum_made {
198 	UNMADE, DEFERRED, REQUESTED, BEINGMADE,
199 	MADE, UPTODATE, ERROR, ABORTED
200     }	    	    made;    	/* Set to reflect the state of processing
201 				 * on this node:
202 				 *  UNMADE - Not examined yet
203 				 *  DEFERRED - Examined once (building child)
204 				 *  REQUESTED - on toBeMade list
205 				 *  BEINGMADE - Target is already being made.
206 				 *  	Indicates a cycle in the graph.
207 				 *  MADE - Was out-of-date and has been made
208 				 *  UPTODATE - Was already up-to-date
209 				 *  ERROR - An error occurred while it was being
210 				 *  	made (used only in compat mode)
211 				 *  ABORTED - The target was aborted due to
212 				 *  	an error making an inferior (compat).
213 				 */
214     int             unmade;    	/* The number of unmade children */
215 
216     time_t          mtime;     	/* Its modification time */
217     struct GNode    *cmgn;    	/* The youngest child */
218 
219     Lst     	    iParents;  	/* Links to parents for which this is an
220 				 * implied source, if any */
221     Lst	    	    cohorts;  	/* Other nodes for the :: operator */
222     Lst             parents;   	/* Nodes that depend on this one */
223     Lst             children;  	/* Nodes on which this one depends */
224     Lst             order_pred;	/* .ORDER nodes we need made */
225     Lst             order_succ;	/* .ORDER nodes who need us */
226 
227     char	    cohort_num[8]; /* #n for this cohort */
228     int		    unmade_cohorts;/* # of unmade instances on the
229 				      cohorts list */
230     struct GNode    *centurion;	/* Pointer to the first instance of a ::
231 				   node; only set when on a cohorts list */
232     unsigned int    checked;    /* Last time we tried to makle this node */
233 
234     Hash_Table      context;	/* The local variables */
235     Lst             commands;  	/* Creation commands */
236 
237     struct _Suff    *suffix;	/* Suffix for the node (determined by
238 				 * Suff_FindDeps and opaque to everyone
239 				 * but the Suff module) */
240     const char	    *fname;	/* filename where the GNode got defined */
241     int		     lineno;	/* line number where the GNode got defined */
242 } GNode;
243 
244 /*
245  * The OP_ constants are used when parsing a dependency line as a way of
246  * communicating to other parts of the program the way in which a target
247  * should be made. These constants are bitwise-OR'ed together and
248  * placed in the 'type' field of each node. Any node that has
249  * a 'type' field which satisfies the OP_NOP function was never never on
250  * the lefthand side of an operator, though it may have been on the
251  * righthand side...
252  */
253 #define OP_DEPENDS	0x00000001  /* Execution of commands depends on
254 				     * kids (:) */
255 #define OP_FORCE	0x00000002  /* Always execute commands (!) */
256 #define OP_DOUBLEDEP	0x00000004  /* Execution of commands depends on kids
257 				     * per line (::) */
258 #define OP_OPMASK	(OP_DEPENDS|OP_FORCE|OP_DOUBLEDEP)
259 
260 #define OP_OPTIONAL	0x00000008  /* Don't care if the target doesn't
261 				     * exist and can't be created */
262 #define OP_USE		0x00000010  /* Use associated commands for parents */
263 #define OP_EXEC	  	0x00000020  /* Target is never out of date, but always
264 				     * execute commands anyway. Its time
265 				     * doesn't matter, so it has none...sort
266 				     * of */
267 #define OP_IGNORE	0x00000040  /* Ignore errors when creating the node */
268 #define OP_PRECIOUS	0x00000080  /* Don't remove the target when
269 				     * interrupted */
270 #define OP_SILENT	0x00000100  /* Don't echo commands when executed */
271 #define OP_MAKE		0x00000200  /* Target is a recursive make so its
272 				     * commands should always be executed when
273 				     * it is out of date, regardless of the
274 				     * state of the -n or -t flags */
275 #define OP_JOIN 	0x00000400  /* Target is out-of-date only if any of its
276 				     * children was out-of-date */
277 #define	OP_MADE		0x00000800  /* Assume the children of the node have
278 				     * been already made */
279 #define OP_SPECIAL	0x00001000  /* Special .BEGIN, .END, .INTERRUPT */
280 #define	OP_USEBEFORE	0x00002000  /* Like .USE, only prepend commands */
281 #define OP_INVISIBLE	0x00004000  /* The node is invisible to its parents.
282 				     * I.e. it doesn't show up in the parents's
283 				     * local variables. */
284 #define OP_NOTMAIN	0x00008000  /* The node is exempt from normal 'main
285 				     * target' processing in parse.c */
286 #define OP_PHONY	0x00010000  /* Not a file target; run always */
287 #define OP_NOPATH	0x00020000  /* Don't search for file in the path */
288 #define OP_WAIT 	0x00040000  /* .WAIT phony node */
289 #define OP_NOMETA	0x00080000  /* .NOMETA do not create a .meta file */
290 #define OP_META		0x00100000  /* .META we _do_ want a .meta file */
291 #define OP_NOMETA_CMP	0x00200000  /* Do not compare commands in .meta file */
292 #define OP_SUBMAKE	0x00400000  /* Possibly a submake node */
293 /* Attributes applied by PMake */
294 #define OP_TRANSFORM	0x80000000  /* The node is a transformation rule */
295 #define OP_MEMBER 	0x40000000  /* Target is a member of an archive */
296 #define OP_LIB	  	0x20000000  /* Target is a library */
297 #define OP_ARCHV  	0x10000000  /* Target is an archive construct */
298 #define OP_HAS_COMMANDS	0x08000000  /* Target has all the commands it should.
299 				     * Used when parsing to catch multiple
300 				     * commands for a target */
301 #define OP_SAVE_CMDS	0x04000000  /* Saving commands on .END (Compat) */
302 #define OP_DEPS_FOUND	0x02000000  /* Already processed by Suff_FindDeps */
303 #define	OP_MARK		0x01000000  /* Node found while expanding .ALLSRC */
304 
305 #define NoExecute(gn) ((gn->type & OP_MAKE) ? noRecursiveExecute : noExecute)
306 /*
307  * OP_NOP will return TRUE if the node with the given type was not the
308  * object of a dependency operator
309  */
310 #define OP_NOP(t)	(((t) & OP_OPMASK) == 0x00000000)
311 
312 #define OP_NOTARGET (OP_NOTMAIN|OP_USE|OP_EXEC|OP_TRANSFORM)
313 
314 /*
315  * The TARG_ constants are used when calling the Targ_FindNode and
316  * Targ_FindList functions in targ.c. They simply tell the functions what to
317  * do if the desired node(s) is (are) not found. If the TARG_CREATE constant
318  * is given, a new, empty node will be created for the target, placed in the
319  * table of all targets and its address returned. If TARG_NOCREATE is given,
320  * a NULL pointer will be returned.
321  */
322 #define TARG_NOCREATE	0x00	  /* don't create it */
323 #define TARG_CREATE	0x01	  /* create node if not found */
324 #define TARG_NOHASH	0x02	  /* don't look in/add to hash table */
325 
326 /*
327  * These constants are all used by the Str_Concat function to decide how the
328  * final string should look. If STR_ADDSPACE is given, a space will be
329  * placed between the two strings. If STR_ADDSLASH is given, a '/' will
330  * be used instead of a space. If neither is given, no intervening characters
331  * will be placed between the two strings in the final output. If the
332  * STR_DOFREE bit is set, the two input strings will be freed before
333  * Str_Concat returns.
334  */
335 #define STR_ADDSPACE	0x01	/* add a space when Str_Concat'ing */
336 #define STR_ADDSLASH	0x02	/* add a slash when Str_Concat'ing */
337 
338 /*
339  * Error levels for parsing. PARSE_FATAL means the process cannot continue
340  * once the makefile has been parsed. PARSE_WARNING means it can. Passed
341  * as the first argument to Parse_Error.
342  */
343 #define PARSE_WARNING	2
344 #define PARSE_FATAL	1
345 
346 /*
347  * Values returned by Cond_Eval.
348  */
349 #define COND_PARSE	0   	/* Parse the next lines */
350 #define COND_SKIP 	1   	/* Skip the next lines */
351 #define COND_INVALID	2   	/* Not a conditional statement */
352 
353 /*
354  * Definitions for the "local" variables. Used only for clarity.
355  */
356 #define TARGET	  	  "@" 	/* Target of dependency */
357 #define OODATE	  	  "?" 	/* All out-of-date sources */
358 #define ALLSRC	  	  ">" 	/* All sources */
359 #define IMPSRC	  	  "<" 	/* Source implied by transformation */
360 #define PREFIX	  	  "*" 	/* Common prefix */
361 #define ARCHIVE	  	  "!" 	/* Archive in "archive(member)" syntax */
362 #define MEMBER	  	  "%" 	/* Member in "archive(member)" syntax */
363 
364 #define FTARGET           "@F"  /* file part of TARGET */
365 #define DTARGET           "@D"  /* directory part of TARGET */
366 #define FIMPSRC           "<F"  /* file part of IMPSRC */
367 #define DIMPSRC           "<D"  /* directory part of IMPSRC */
368 #define FPREFIX           "*F"  /* file part of PREFIX */
369 #define DPREFIX           "*D"  /* directory part of PREFIX */
370 
371 /*
372  * Global Variables
373  */
374 extern Lst  	create;	    	/* The list of target names specified on the
375 				 * command line. used to resolve #if
376 				 * make(...) statements */
377 extern Lst     	dirSearchPath; 	/* The list of directories to search when
378 				 * looking for targets */
379 
380 extern Boolean	compatMake;	/* True if we are make compatible */
381 extern Boolean	ignoreErrors;  	/* True if should ignore all errors */
382 extern Boolean  beSilent;    	/* True if should print no commands */
383 extern Boolean  noExecute;    	/* True if should execute nothing */
384 extern Boolean  noRecursiveExecute;    	/* True if should execute nothing */
385 extern Boolean  allPrecious;   	/* True if every target is precious */
386 extern Boolean  keepgoing;    	/* True if should continue on unaffected
387 				 * portions of the graph when have an error
388 				 * in one portion */
389 extern Boolean 	touchFlag;    	/* TRUE if targets should just be 'touched'
390 				 * if out of date. Set by the -t flag */
391 extern Boolean 	queryFlag;    	/* TRUE if we aren't supposed to really make
392 				 * anything, just see if the targets are out-
393 				 * of-date */
394 extern Boolean	doing_depend;	/* TRUE if processing .depend */
395 
396 extern Boolean	checkEnvFirst;	/* TRUE if environment should be searched for
397 				 * variables before the global context */
398 extern Boolean	jobServer;	/* a jobServer already exists */
399 
400 extern Boolean	parseWarnFatal;	/* TRUE if makefile parsing warnings are
401 				 * treated as errors */
402 
403 extern Boolean	varNoExportEnv;	/* TRUE if we should not export variables
404 				 * set on the command line to the env. */
405 
406 extern GNode    *DEFAULT;    	/* .DEFAULT rule */
407 
408 extern GNode	*VAR_INTERNAL;	/* Variables defined internally by make
409 				 * which should not override those set by
410 				 * makefiles.
411 				 */
412 extern GNode    *VAR_GLOBAL;   	/* Variables defined in a global context, e.g
413 				 * in the Makefile itself */
414 extern GNode    *VAR_CMD;    	/* Variables defined on the command line */
415 extern GNode	*VAR_FOR;	/* Iteration variables */
416 extern char    	var_Error[];   	/* Value returned by Var_Parse when an error
417 				 * is encountered. It actually points to
418 				 * an empty string, so naive callers needn't
419 				 * worry about it. */
420 
421 extern time_t 	now;	    	/* The time at the start of this whole
422 				 * process */
423 
424 extern Boolean	oldVars;    	/* Do old-style variable substitution */
425 
426 extern Lst	sysIncPath;	/* The system include path. */
427 extern Lst	defIncPath;	/* The default include path. */
428 
429 extern char	curdir[];	/* Startup directory */
430 extern char	*progname;	/* The program name */
431 extern char	*makeDependfile; /* .depend */
432 extern char	**savedEnv;	 /* if we replaced environ this will be non-NULL */
433 
434 /*
435  * We cannot vfork() in a child of vfork().
436  * Most systems do not enforce this but some do.
437  */
438 #define vFork() ((getpid() == myPid) ? vfork() : fork())
439 extern pid_t	myPid;
440 
441 #define	MAKEFLAGS	".MAKEFLAGS"
442 #define	MAKEOVERRIDES	".MAKEOVERRIDES"
443 #define	MAKE_JOB_PREFIX	".MAKE.JOB.PREFIX" /* prefix for job target output */
444 #define	MAKE_EXPORTED	".MAKE.EXPORTED"   /* variables we export */
445 #define	MAKE_MAKEFILES	".MAKE.MAKEFILES"  /* all the makefiles we read */
446 #define	MAKE_LEVEL	".MAKE.LEVEL"	   /* recursion level */
447 #define MAKEFILE_PREFERENCE ".MAKE.MAKEFILE_PREFERENCE"
448 #define MAKE_DEPENDFILE	".MAKE.DEPENDFILE" /* .depend */
449 #define MAKE_MODE	".MAKE.MODE"
450 #ifndef MAKE_LEVEL_ENV
451 # define MAKE_LEVEL_ENV	"MAKELEVEL"
452 #endif
453 
454 /*
455  * debug control:
456  *	There is one bit per module.  It is up to the module what debug
457  *	information to print.
458  */
459 FILE *debug_file;		/* Output written here - default stdout */
460 extern int debug;
461 #define	DEBUG_ARCH	0x00001
462 #define	DEBUG_COND	0x00002
463 #define	DEBUG_DIR	0x00004
464 #define	DEBUG_GRAPH1	0x00008
465 #define	DEBUG_GRAPH2	0x00010
466 #define	DEBUG_JOB	0x00020
467 #define	DEBUG_MAKE	0x00040
468 #define	DEBUG_SUFF	0x00080
469 #define	DEBUG_TARG	0x00100
470 #define	DEBUG_VAR	0x00200
471 #define DEBUG_FOR	0x00400
472 #define DEBUG_SHELL	0x00800
473 #define DEBUG_ERROR	0x01000
474 #define DEBUG_LOUD	0x02000
475 #define DEBUG_META	0x04000
476 
477 #define DEBUG_GRAPH3	0x10000
478 #define DEBUG_SCRIPT	0x20000
479 #define DEBUG_PARSE	0x40000
480 #define DEBUG_CWD	0x80000
481 
482 #define CONCAT(a,b)	a##b
483 
484 #define	DEBUG(module)	(debug & CONCAT(DEBUG_,module))
485 
486 #include "nonints.h"
487 
488 int Make_TimeStamp(GNode *, GNode *);
489 Boolean Make_OODate(GNode *);
490 void Make_ExpandUse(Lst);
491 time_t Make_Recheck(GNode *);
492 void Make_HandleUse(GNode *, GNode *);
493 void Make_Update(GNode *);
494 void Make_DoAllVar(GNode *);
495 Boolean Make_Run(Lst);
496 char * Check_Cwd_Cmd(const char *);
497 void Check_Cwd(const char **);
498 void PrintOnError(GNode *, const char *);
499 void Main_ExportMAKEFLAGS(Boolean);
500 Boolean Main_SetObjdir(const char *);
501 int mkTempFile(const char *, char **);
502 int str2Lst_Append(Lst, char *, const char *);
503 
504 #ifdef __GNUC__
505 #define UNCONST(ptr)	({ 		\
506     union __unconst {			\
507 	const void *__cp;		\
508 	void *__p;			\
509     } __d;				\
510     __d.__cp = ptr, __d.__p; })
511 #else
512 #define UNCONST(ptr)	(void *)(ptr)
513 #endif
514 
515 #ifndef MIN
516 #define MIN(a, b) ((a < b) ? a : b)
517 #endif
518 #ifndef MAX
519 #define MAX(a, b) ((a > b) ? a : b)
520 #endif
521 
522 #ifndef MAXPATHLEN
523 #define MAXPATHLEN BMAKE_PATH_MAX
524 #endif
525 
526 #endif /* _MAKE_H_ */
527