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source: trunk/src/kmk/make.h@ 1896

Last change on this file since 1896 was 1896, checked in by bird, 17 years ago
moved stuff.
Property svn:eol-style set to `native`
File size: 24.6 KB

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1	/* Miscellaneous global declarations and portability cruft for GNU Make.
2	Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
3	1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software
4	Foundation, Inc.
5	This file is part of GNU Make.
6
7	GNU Make is free software; you can redistribute it and/or modify it under the
8	terms of the GNU General Public License as published by the Free Software
9	Foundation; either version 2, or (at your option) any later version.
10
11	GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
12	WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
13	A PARTICULAR PURPOSE. See the GNU General Public License for more details.
14
15	You should have received a copy of the GNU General Public License along with
16	GNU Make; see the file COPYING. If not, write to the Free Software
17	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. */
18
19	/* We use <config.h> instead of "config.h" so that a compilation
20	using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
21	(which it would do because make.h was found in $srcdir). */
22	#include <config.h>
23	#undef HAVE_CONFIG_H
24	#define HAVE_CONFIG_H 1
25
26	/* AIX requires this to be the first thing in the file. */
27	#ifndef __GNUC__
28	# if HAVE_ALLOCA_H
29	# include <alloca.h>
30	# else
31	# ifdef _AIX
32	#pragma alloca
33	# else
34	# ifndef alloca /* predefined by HP cc +Olibcalls */
35	char *alloca ();
36	# endif
37	# endif
38	# endif
39	#endif
40
41
42	/* Specify we want GNU source code. This must be defined before any
43	system headers are included. */
44
45	#define _GNU_SOURCE 1
46
47
48	#ifdef CRAY
49	/* This must happen before #include <signal.h> so
50	that the declaration therein is changed. */
51	# define signal bsdsignal
52	#endif
53
54	/* If we're compiling for the dmalloc debugger, turn off string inlining. */
55	#if defined(HAVE_DMALLOC_H) && defined(__GNUC__)
56	# define __NO_STRING_INLINES
57	#endif
58
59	#include <sys/types.h>
60	#include <sys/stat.h>
61	#include <signal.h>
62	#include <stdio.h>
63	#include <ctype.h>
64	#ifdef HAVE_SYS_TIMEB_H
65	/* SCO 3.2 "devsys 4.2" has a prototype for `ftime' in <time.h> that bombs
66	unless <sys/timeb.h> has been included first. Does every system have a
67	<sys/timeb.h>? If any does not, configure should check for it. */
68	# include <sys/timeb.h>
69	#endif
70
71	#if TIME_WITH_SYS_TIME
72	# include <sys/time.h>
73	# include <time.h>
74	#else
75	# if HAVE_SYS_TIME_H
76	# include <sys/time.h>
77	# else
78	# include <time.h>
79	# endif
80	#endif
81
82	#include <errno.h>
83
84	#ifndef errno
85	extern int errno;
86	#endif
87
88	#ifndef isblank
89	# define isblank(c) ((c) == ' ' \|\| (c) == '\t')
90	#endif
91
92	#ifdef HAVE_UNISTD_H
93	# include <unistd.h>
94	/* Ultrix's unistd.h always defines _POSIX_VERSION, but you only get
95	POSIX.1 behavior with `cc -YPOSIX', which predefines POSIX itself! */
96	# if defined (_POSIX_VERSION) && !defined (ultrix) && !defined (VMS)
97	# define POSIX 1
98	# endif
99	#endif
100
101	/* Some systems define _POSIX_VERSION but are not really POSIX.1. */
102	#if (defined (butterfly) \|\| defined (__arm) \|\| (defined (__mips) && defined (_SYSTYPE_SVR3)) \|\| (defined (sequent) && defined (i386)))
103	# undef POSIX
104	#endif
105
106	#if !defined (POSIX) && defined (_AIX) && defined (_POSIX_SOURCE)
107	# define POSIX 1
108	#endif
109
110	#ifndef RETSIGTYPE
111	# define RETSIGTYPE void
112	#endif
113
114	#ifndef sigmask
115	# define sigmask(sig) (1 << ((sig) - 1))
116	#endif
117
118	#ifndef HAVE_SA_RESTART
119	# define SA_RESTART 0
120	#endif
121
122	#ifdef HAVE_LIMITS_H
123	# include <limits.h>
124	#endif
125	#ifdef HAVE_SYS_PARAM_H
126	# include <sys/param.h>
127	#endif
128
129	#ifndef PATH_MAX
130	# ifndef POSIX
131	# define PATH_MAX MAXPATHLEN
132	# endif
133	#endif
134	#ifndef MAXPATHLEN
135	# define MAXPATHLEN 1024
136	#endif
137
138	#ifdef PATH_MAX
139	# define GET_PATH_MAX PATH_MAX
140	# define PATH_VAR(var) char var[PATH_MAX]
141	#else
142	# define NEED_GET_PATH_MAX 1
143	# define GET_PATH_MAX (get_path_max ())
144	# define PATH_VAR(var) char *var = alloca (GET_PATH_MAX)
145	unsigned int get_path_max (void);
146	#endif
147
148	#if defined(KMK) \|\| defined(CONFIG_WITH_VALUE_LENGTH)
149	# ifdef _MSC_VER
150	# define MY_INLINE _inline static
151	# define MY_DBGBREAK __debugbreak()
152	# elif defined(__GNUC__)
153	# define MY_INLINE static __inline__
154	# if defined(__i386__) \|\| defined(__x86_64__)
155	# define MY_DBGBREAK __asm__ __volatile__ ("int3")
156	#else
157	# define MY_DBGBREAK assert(0)
158	# endif
159	# else
160	# define MY_INLINE static
161	# define MY_DBGBREAK assert(0)
162	# endif
163	# ifndef NDEBUG
164	# define MY_ASSERT_MSG(expr, printfargs) \
165	do { if (!(expr)) { printf printfargs; MY_DBGBREAK; } } while (0)
166	# else
167	# define MY_ASSERT_MSG(expr, printfargs) do { } while (0)
168	# endif
169
170	# ifdef __GNUC__
171	# define MY_PREDICT_TRUE(expr) __builtin_expect(!!(expr), 1)
172	# define MY_PREDICT_FALSE(expr) __builtin_expect(!!(expr), 0)
173	# else
174	# define MY_PREDICT_TRUE(expr) (expr)
175	# define MY_PREDICT_FALSE(expr) (expr)
176	# endif
177	#endif
178
179	#ifdef KMK
180	# include <ctype.h>
181	# if 1 /* See if this speeds things up (Windows is doing this anyway, so,
182	we might as well try be consistent in speed + features). */
183	# if 1
184	# define MY_IS_BLANK(ch) ((ch) == ' ' \|\| (ch) == '\t')
185	# define MY_IS_BLANK_OR_EOS(ch) ((ch) == ' ' \|\| (ch) == '\t' \|\| (ch) == '\0')
186	# else
187	# define MY_IS_BLANK(ch) (((ch) == ' ') \| ((ch) == '\t'))
188	# define MY_IS_BLANK_OR_EOS(ch) (((ch) == ' ') \| ((ch) == '\t') \| ((ch) == '\0'))
189	# endif
190	# undef isblank
191	# define isblank(ch) MY_IS_BLANK(ch)
192	# else
193	# define MY_IS_BLANK(ch) isblank ((unsigned char)(ch))
194	# define MY_IS_BLANK_OR_EOS(ch) (isblank ((unsigned char)(ch)) \|\| (ch) == '\0')
195	# endif
196	#endif
197
198	#ifndef CHAR_BIT
199	# define CHAR_BIT 8
200	#endif
201
202	/* Nonzero if the integer type T is signed. */
203	#define INTEGER_TYPE_SIGNED(t) ((t) -1 < 0)
204
205	/* The minimum and maximum values for the integer type T.
206	Use ~ (t) 0, not -1, for portability to 1's complement hosts. */
207	#define INTEGER_TYPE_MINIMUM(t) \
208	(! INTEGER_TYPE_SIGNED (t) ? (t) 0 : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1))
209	#define INTEGER_TYPE_MAXIMUM(t) (~ (t) 0 - INTEGER_TYPE_MINIMUM (t))
210
211	#ifndef CHAR_MAX
212	# define CHAR_MAX INTEGER_TYPE_MAXIMUM (char)
213	#endif
214
215	#ifdef STAT_MACROS_BROKEN
216	# ifdef S_ISREG
217	# undef S_ISREG
218	# endif
219	# ifdef S_ISDIR
220	# undef S_ISDIR
221	# endif
222	#endif /* STAT_MACROS_BROKEN. */
223
224	#ifndef S_ISREG
225	# define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
226	#endif
227	#ifndef S_ISDIR
228	# define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
229	#endif
230
231	#ifdef VMS
232	# include <types.h>
233	# include <unixlib.h>
234	# include <unixio.h>
235	# include <perror.h>
236	/* Needed to use alloca on VMS. */
237	# include <builtins.h>
238	#endif
239
240	#ifndef __attribute__
241	/* This feature is available in gcc versions 2.5 and later. */
242	# if __GNUC__ < 2 \|\| (__GNUC__ == 2 && __GNUC_MINOR__ < 5) \|\| __STRICT_ANSI__
243	# define __attribute__(x)
244	# endif
245	/* The __-protected variants of `format' and `printf' attributes
246	are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */
247	# if __GNUC__ < 2 \|\| (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
248	# define __format__ format
249	# define __printf__ printf
250	# endif
251	#endif
252	#define UNUSED __attribute__ ((unused))
253
254	#if defined (STDC_HEADERS) \|\| defined (__GNU_LIBRARY__)
255	# include <stdlib.h>
256	# include <string.h>
257	# define ANSI_STRING 1
258	#else /* No standard headers. */
259	# ifdef HAVE_STRING_H
260	# include <string.h>
261	# define ANSI_STRING 1
262	# else
263	# include <strings.h>
264	# endif
265	# ifdef HAVE_MEMORY_H
266	# include <memory.h>
267	# endif
268	# ifdef HAVE_STDLIB_H
269	# include <stdlib.h>
270	# else
271	void *malloc (int);
272	void realloc (void , int);
273	void free (void *);
274
275	void abort (void) __attribute__ ((noreturn));
276	void exit (int) __attribute__ ((noreturn));
277	# endif /* HAVE_STDLIB_H. */
278
279	#endif /* Standard headers. */
280
281	/* These should be in stdlib.h. Make sure we have them. */
282	#ifndef EXIT_SUCCESS
283	# define EXIT_SUCCESS 0
284	#endif
285	#ifndef EXIT_FAILURE
286	# define EXIT_FAILURE 1
287	#endif
288
289	#ifndef ANSI_STRING
290
291	/* SCO Xenix has a buggy macro definition in <string.h>. */
292	#undef strerror
293	#if !defined(__DECC)
294	char *strerror (int errnum);
295	#endif
296
297	#endif /* !ANSI_STRING. */
298	#undef ANSI_STRING
299
300	#if HAVE_INTTYPES_H
301	# include <inttypes.h>
302	#endif
303	#define FILE_TIMESTAMP uintmax_t
304
305	#if !defined(HAVE_STRSIGNAL)
306	char *strsignal (int signum);
307	#endif
308
309	/* ISDIGIT offers the following features:
310	- Its arg may be any int or unsigned int; it need not be an unsigned char.
311	- It's guaranteed to evaluate its argument exactly once.
312	NOTE! Make relies on this behavior, don't change it!
313	- It's typically faster.
314	POSIX 1003.2-1992 section 2.5.2.1 page 50 lines 1556-1558 says that
315	only '0' through '9' are digits. Prefer ISDIGIT to isdigit() unless
316	it's important to use the locale's definition of `digit' even when the
317	host does not conform to POSIX. */
318	#define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
319
320	#ifndef iAPX286
321	# define streq(a, b) \
322	((a) == (b) \|\| \
323	((a) == (b) && (*(a) == '\0' \|\| !strcmp ((a) + 1, (b) + 1))))
324	# ifdef HAVE_CASE_INSENSITIVE_FS
325	# define strieq(a, b) \
326	((a) == (b) \
327	\|\| (tolower((unsigned char)(a)) == tolower((unsigned char)(b)) \
328	&& (*(a) == '\0' \|\| !strcasecmp ((a) + 1, (b) + 1))))
329	# else
330	# define strieq(a, b) streq(a, b)
331	# endif
332	#else
333	/* Buggy compiler can't handle this. */
334	# define streq(a, b) (strcmp ((a), (b)) == 0)
335	# define strieq(a, b) (strcmp ((a), (b)) == 0)
336	#endif
337	#define strneq(a, b, l) (strncmp ((a), (b), (l)) == 0)
338
339	#if (defined(__GNUC__) \|\| defined(ENUM_BITFIELDS)) && !defined(NO_ENUM_BITFIELDS)
340	# define ENUM_BITFIELD(bits) :bits
341	#else
342	# define ENUM_BITFIELD(bits)
343	#endif
344
345	/* Handle gettext and locales. */
346
347	#if HAVE_LOCALE_H
348	# include <locale.h>
349	#else
350	# define setlocale(category, locale)
351	#endif
352
353	#include <gettext.h>
354
355	#define _(msgid) gettext (msgid)
356	#define N_(msgid) gettext_noop (msgid)
357	#define S_(msg1,msg2,num) ngettext (msg1,msg2,num)
358
359	/* Handle other OSs. */
360	#ifndef PATH_SEPARATOR_CHAR
361	# if defined(HAVE_DOS_PATHS)
362	# define PATH_SEPARATOR_CHAR ';'
363	# elif defined(VMS)
364	# define PATH_SEPARATOR_CHAR ','
365	# else
366	# define PATH_SEPARATOR_CHAR ':'
367	# endif
368	#endif
369
370	/* This is needed for getcwd() and chdir(), on some W32 systems. */
371	#if defined(HAVE_DIRECT_H)
372	# include <direct.h>
373	#endif
374
375	#ifdef WINDOWS32
376	# include <fcntl.h>
377	# include <malloc.h>
378	# define pipe(_p) _pipe((_p), 512, O_BINARY)
379	# define kill(_pid,_sig) w32_kill((_pid),(_sig))
380
381	void sync_Path_environment (void);
382	int w32_kill (int pid, int sig); /* bird kill -> w32_kill - macro acquired () on the args. */
383	char end_of_token_w32 (const char s, char stopchar);
384	int find_and_set_default_shell (const char *token);
385
386	/* indicates whether or not we have Bourne shell */
387	extern int no_default_sh_exe;
388
389	/* is default_shell unixy? */
390	extern int unixy_shell;
391	#endif /* WINDOWS32 */
392
393	struct floc
394	{
395	const char *filenm;
396	unsigned long lineno;
397	};
398	#define NILF ((struct floc *)0)
399
400	#define STRING_SIZE_TUPLE(_s) (_s), (sizeof (_s)-1)
401
402
403
404	/* We have to have stdarg.h or varargs.h AND v*printf or doprnt to use
405	variadic versions of these functions. */
406
407	#if HAVE_STDARG_H \|\| HAVE_VARARGS_H
408	# if HAVE_VPRINTF \|\| HAVE_DOPRNT
409	# define USE_VARIADIC 1
410	# endif
411	#endif
412
413	#if HAVE_ANSI_COMPILER && USE_VARIADIC && HAVE_STDARG_H
414	void message (int prefix, const char *fmt, ...)
415	__attribute__ ((__format__ (__printf__, 2, 3)));
416	void error (const struct floc flocp, const char fmt, ...)
417	__attribute__ ((__format__ (__printf__, 2, 3)));
418	void fatal (const struct floc flocp, const char fmt, ...)
419	__attribute__ ((noreturn, __format__ (__printf__, 2, 3)));
420	#else
421	void message ();
422	void error ();
423	void fatal ();
424	#endif
425
426	void die (int) __attribute__ ((noreturn));
427	void log_working_directory (int);
428	void pfatal_with_name (const char *) __attribute__ ((noreturn));
429	void perror_with_name (const char , const char );
430	char savestring (const char , unsigned int);
431	char concat (const char , const char , const char );
432	void *xmalloc (unsigned int);
433	void xrealloc (void , unsigned int);
434	char xstrdup (const char );
435	char find_next_token (const char , unsigned int );
436	char next_token (const char );
437	char end_of_token (const char );
438	#ifndef CONFIG_WITH_VALUE_LENGTH
439	void collapse_continuations (char *);
440	#else
441	char collapse_continuations (char , unsigned int);
442	#endif
443	#ifdef CONFIG_WITH_OPTIMIZATION_HACKS /* memchr is usually compiler intrinsic, thus faster. */
444	# define lindex(s, limit, c) ((char *)memchr((s), (c), (limit) - (s)))
445	#else
446	char lindex (const char , const char *, int);
447	#endif
448	int alpha_compare (const void , const void );
449	void print_spaces (unsigned int);
450	char find_percent (char );
451	const char find_percent_cached (const char *);
452	FILE open_tmpfile (char , const char );
453
454	#ifndef NO_ARCHIVES
455	int ar_name (const char *);
456	void ar_parse_name (const char , char , char *);
457	int ar_touch (const char *);
458	time_t ar_member_date (const char *);
459
460	typedef long int (ar_member_func_t) (int desc, const char mem, int truncated,
461	long int hdrpos, long int datapos,
462	long int size, long int date, int uid,
463	int gid, int mode, const void *arg);
464
465	long int ar_scan (const char archive, ar_member_func_t function, const void arg);
466	int ar_name_equal (const char name, const char mem, int truncated);
467	#ifndef VMS
468	int ar_member_touch (const char arname, const char memname);
469	#endif
470	#endif
471
472	int dir_file_exists_p (const char , const char );
473	int file_exists_p (const char *);
474	int file_impossible_p (const char *);
475	void file_impossible (const char *);
476	const char dir_name (const char );
477	void hash_init_directories (void);
478
479	void define_default_variables (void);
480	void set_default_suffixes (void);
481	void install_default_suffix_rules (void);
482	void install_default_implicit_rules (void);
483
484	void build_vpath_lists (void);
485	void construct_vpath_list (char pattern, char dirpath);
486	const char vpath_search (const char file, FILE_TIMESTAMP *mtime_ptr);
487	int gpath_search (const char *file, unsigned int len);
488
489	void construct_include_path (const char **arg_dirs);
490
491	void user_access (void);
492	void make_access (void);
493	void child_access (void);
494
495	void close_stdout (void);
496
497	char strip_whitespace (const char begpp, const char *endpp);
498
499	#ifdef CONFIG_WITH_ALLOC_CACHES
500	/* alloccache (misc.c) */
501
502	struct alloccache_free_ent
503	{
504	struct alloccache_free_ent *next;
505	};
506
507	struct alloccache
508	{
509	char *free_start;
510	char *free_end;
511	struct alloccache_free_ent *free_head;
512	unsigned int size;
513	unsigned int alloc_count;
514	unsigned int total_count;
515	const char *name;
516	struct alloccache *next;
517	void *grow_arg;
518	void (grow_alloc)(void *grow_arg, unsigned int size);
519	};
520
521	void alloccache_init (struct alloccache cache, unsigned int size, const char name,
522	void (grow_alloc)(void grow_arg, unsigned int size), void grow_arg);
523	void alloccache_term (struct alloccache *cache,
524	void (term_free)(void term_arg, void ptr, unsigned int size), void term_arg);
525	void alloccache_join (struct alloccache cache, struct alloccache eat);
526	void alloccache_print (struct alloccache *cache);
527	void alloccache_print_all (void);
528	struct alloccache_free_ent alloccache_alloc_grow (struct alloccache cache);
529
530	/* Allocate an item. */
531	MY_INLINE void *
532	alloccache_alloc (struct alloccache *cache)
533	{
534	struct alloccache_free_ent *f = cache->free_head;
535	if (f)
536	cache->free_head = f->next;
537	else if (cache->free_start != cache->free_end)
538	{
539	f = (struct alloccache_free_ent *)cache->free_start;
540	cache->free_start += cache->size;
541	}
542	else
543	f = alloccache_alloc_grow (cache);
544	cache->alloc_count++;
545	return f;
546	}
547
548	/* Allocate a cleared item. */
549	MY_INLINE void *
550	alloccache_calloc (struct alloccache *cache)
551	{
552	void *item = alloccache_alloc (cache);
553	memset (item, '\0', cache->size);
554	return item;
555	}
556
557	/* Free an item. */
558	MY_INLINE void
559	alloccache_free (struct alloccache cache, void item)
560	{
561	struct alloccache_free_ent f = (struct alloccache_free_ent )item;
562	#if 0 /ndef NDEBUG/
563	struct alloccache_free_ent *c;
564	unsigned int i = 0;
565	for (c = cache->free_head; c != NULL; c = c->next, i++)
566	MY_ASSERT_MSG (c != f && i < 0x10000000,
567	("i=%u total_count=%u\n", i, cache->total_count));
568	#endif
569
570	f->next = cache->free_head;
571	cache->free_head = f;
572	cache->alloc_count--;
573	}
574
575	/* the alloc caches */
576	extern struct alloccache dep_cache;
577	extern struct alloccache file_cache;
578	extern struct alloccache commands_cache;
579	extern struct alloccache nameseq_cache;
580	extern struct alloccache variable_cache;
581	extern struct alloccache variable_set_cache;
582	extern struct alloccache variable_set_list_cache;
583
584	#endif /* CONFIG_WITH_ALLOC_CACHES */
585
586
587	/* String caching */
588	void strcache_init (void);
589	void strcache_print_stats (const char *prefix);
590	#ifndef CONFIG_WITH_STRCACHE2
591	int strcache_iscached (const char *str);
592	const char strcache_add (const char str);
593	const char strcache_add_len (const char str, int len);
594	int strcache_setbufsize (int size);
595	#else /* CONFIG_WITH_STRCACHE2 */
596
597	# include "strcache2.h"
598	extern struct strcache2 file_strcache;
599
600	# define strcache_iscached(str) strcache2_is_cached(&file_strcache, str)
601	# define strcache_add(str) strcache2_add_file(&file_strcache, str, strlen (str))
602	# define strcache_add_len(str, len) strcache2_add_file(&file_strcache, str, len)
603	# define strcache_get_len(str) strcache2_get_len(&file_strcache, str)
604	# define strcache_get_hash1(str) strcache2_get_hash1(&file_strcache, str)
605	# define strcache_get_hash2(str) strcache2_get_hash2(&file_strcache, str)
606
607	#endif /* CONFIG_WITH_STRCACHE2 */
608
609	#ifdef HAVE_VFORK_H
610	# include <vfork.h>
611	#endif
612
613	/* We omit these declarations on non-POSIX systems which define _POSIX_VERSION,
614	because such systems often declare them in header files anyway. */
615
616	#if !defined (__GNU_LIBRARY__) && !defined (POSIX) && !defined (_POSIX_VERSION) && !defined(WINDOWS32)
617
618	long int atol ();
619	# ifndef VMS
620	long int lseek ();
621	# endif
622
623	#endif /* Not GNU C library or POSIX. */
624
625	#ifdef HAVE_GETCWD
626	# if !defined(VMS) && !defined(__DECC) && !defined(_MSC_VER) /* bird: MSC */
627	char *getcwd ();
628	# endif
629	#else
630	char *getwd ();
631	# define getcwd(buf, len) getwd (buf)
632	#endif
633
634	#if !HAVE_STRCASECMP
635	# if HAVE_STRICMP
636	# define strcasecmp stricmp
637	# elif HAVE_STRCMPI
638	# define strcasecmp strcmpi
639	# else
640	/* Create our own, in misc.c */
641	int strcasecmp (const char s1, const char s2);
642	# endif
643	#endif
644
645	extern const struct floc *reading_file;
646	extern const struct floc **expanding_var;
647
648	#if !defined(_MSC_VER) /* bird */
649	extern char **environ;
650	#endif
651
652	extern int just_print_flag, silent_flag, ignore_errors_flag, keep_going_flag;
653	extern int print_data_base_flag, question_flag, touch_flag, always_make_flag;
654	extern int env_overrides, no_builtin_rules_flag, no_builtin_variables_flag;
655	extern int print_version_flag, print_directory_flag, check_symlink_flag;
656	extern int warn_undefined_variables_flag, posix_pedantic, not_parallel;
657	extern int second_expansion, clock_skew_detected, rebuilding_makefiles;
658	#ifdef CONFIG_WITH_2ND_TARGET_EXPANSION
659	extern int second_target_expansion;
660	#endif
661	#ifdef CONFIG_PRETTY_COMMAND_PRINTING
662	extern int pretty_command_printing;
663	#endif
664	#ifdef CONFIG_WITH_MAKE_STATS
665	extern int make_expensive_statistics;
666	#endif
667
668
669	/* can we run commands via 'sh -c xxx' or must we use batch files? */
670	extern int batch_mode_shell;
671
672	extern char cmd_prefix;
673
674	extern unsigned int job_slots;
675	extern int job_fds[2];
676	extern int job_rfd;
677	#ifndef NO_FLOAT
678	extern double max_load_average;
679	#else
680	extern int max_load_average;
681	#endif
682
683	extern char *program;
684	extern char *starting_directory;
685	extern unsigned int makelevel;
686	extern char version_string, remote_description, *make_host;
687
688	extern unsigned int commands_started;
689
690	extern int handling_fatal_signal;
691
692
693	#ifndef MIN
694	#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
695	#endif
696	#ifndef MAX
697	#define MAX(_a,_b) ((_a)>(_b)?(_a):(_b))
698	#endif
699
700	#ifdef VMS
701	# define MAKE_SUCCESS 1
702	# define MAKE_TROUBLE 2
703	# define MAKE_FAILURE 3
704	#else
705	# define MAKE_SUCCESS 0
706	# define MAKE_TROUBLE 1
707	# define MAKE_FAILURE 2
708	#endif
709
710	/* Set up heap debugging library dmalloc. */
711
712	#ifdef HAVE_DMALLOC_H
713	#include <dmalloc.h>
714	#endif
715
716	#ifndef initialize_main
717	# ifdef __EMX__
718	# define initialize_main(pargc, pargv) \
719	{ _wildcard(pargc, pargv); _response(pargc, pargv); }
720	# else
721	# define initialize_main(pargc, pargv)
722	# endif
723	#endif
724
725	#ifdef __EMX__
726	# if !defined chdir
727	# define chdir _chdir2
728	# endif
729	# if !defined getcwd
730	# define getcwd _getcwd2
731	# endif
732
733	/* NO_CHDIR2 causes make not to use _chdir2() and _getcwd2() instead of
734	chdir() and getcwd(). This avoids some error messages for the
735	make testsuite but restricts the drive letter support. */
736	# ifdef NO_CHDIR2
737	# warning NO_CHDIR2: usage of drive letters restricted
738	# undef chdir
739	# undef getcwd
740	# endif
741	#endif
742
743	#ifndef initialize_main
744	# define initialize_main(pargc, pargv)
745	#endif
746
747
748	/* Some systems (like Solaris, PTX, etc.) do not support the SA_RESTART flag
749	properly according to POSIX. So, we try to wrap common system calls with
750	checks for EINTR. Note that there are still plenty of system calls that
751	can fail with EINTR but this, reportedly, gets the vast majority of
752	failure cases. If you still experience failures you'll need to either get
753	a system where SA_RESTART works, or you need to avoid -j. */
754
755	#define EINTRLOOP(_v,_c) while (((_v)=_c)==-1 && errno==EINTR)
756
757	/* While system calls that return integers are pretty consistent about
758	returning -1 on failure and setting errno in that case, functions that
759	return pointers are not always so well behaved. Sometimes they return
760	NULL for expected behavior: one good example is readdir() which returns
761	NULL at the end of the directory--and _doesn't_ reset errno. So, we have
762	to do it ourselves here. */
763
764	#define ENULLLOOP(_v,_c) do { errno = 0; (_v) = _c; } \
765	while((_v)==0 && errno==EINTR)
766
767
768	#if defined(__EMX__) && defined(CONFIG_WITH_OPTIMIZATION_HACKS) /* bird: saves 40-100ms on libc. */
769	static inline void __my_rawmemchr (const void __s, int __c);
770	#undef strchr
771	#define strchr(s, c) \
772	(__extension__ (__builtin_constant_p (c) \
773	? ((c) == '\0' \
774	? (char *) __my_rawmemchr ((s), (c)) \
775	: __my_strchr_c ((s), ((c) & 0xff) << 8)) \
776	: __my_strchr_g ((s), (c))))
777	static inline char __my_strchr_c (const char __s, int __c)
778	{
779	register unsigned long int __d0;
780	register char *__res;
781	__asm__ __volatile__
782	("1:\n\t"
783	"movb (%0),%%al\n\t"
784	"cmpb %%ah,%%al\n\t"
785	"je 2f\n\t"
786	"leal 1(%0),%0\n\t"
787	"testb %%al,%%al\n\t"
788	"jne 1b\n\t"
789	"xorl %0,%0\n"
790	"2:"
791	: "=r" (__res), "=&a" (__d0)
792	: "0" (__s), "1" (__c),
793	"m" ( (struct { char __x[0xfffffff]; } )__s)
794	: "cc");
795	return __res;
796	}
797
798	static inline char __my_strchr_g (__const char __s, int __c)
799	{
800	register unsigned long int __d0;
801	register char *__res;
802	__asm__ __volatile__
803	("movb %%al,%%ah\n"
804	"1:\n\t"
805	"movb (%0),%%al\n\t"
806	"cmpb %%ah,%%al\n\t"
807	"je 2f\n\t"
808	"leal 1(%0),%0\n\t"
809	"testb %%al,%%al\n\t"
810	"jne 1b\n\t"
811	"xorl %0,%0\n"
812	"2:"
813	: "=r" (__res), "=&a" (__d0)
814	: "0" (__s), "1" (__c),
815	"m" ( (struct { char __x[0xfffffff]; } )__s)
816	: "cc");
817	return __res;
818	}
819
820	static inline void __my_rawmemchr (const void __s, int __c)
821	{
822	register unsigned long int __d0;
823	register unsigned char *__res;
824	__asm__ __volatile__
825	("cld\n\t"
826	"repne; scasb\n\t"
827	: "=D" (__res), "=&c" (__d0)
828	: "a" (__c), "0" (__s), "1" (0xffffffff),
829	"m" ( (struct { char __x[0xfffffff]; } )__s)
830	: "cc");
831	return __res - 1;
832	}
833
834	#undef memchr
835	#define memchr(a,b,c) __my_memchr((a),(b),(c))
836	static inline void __my_memchr (__const void __s, int __c, size_t __n)
837	{
838	register unsigned long int __d0;
839	register unsigned char *__res;
840	if (__n == 0)
841	return NULL;
842	__asm__ __volatile__
843	("repne; scasb\n\t"
844	"je 1f\n\t"
845	"movl $1,%0\n"
846	"1:"
847	: "=D" (__res), "=&c" (__d0)
848	: "a" (__c), "0" (__s), "1" (__n),
849	"m" ( (struct { __extension__ char __x[__n]; } )__s)
850	: "cc");
851	return __res - 1;
852	}
853
854	#endif /* __EMX__ (bird) */
855
856	#ifdef CONFIG_WITH_MAKE_STATS
857	extern long make_stats_allocations;
858	extern unsigned long make_stats_allocated;
859	extern unsigned long make_stats_allocated_sum;
860	extern unsigned long make_stats_ht_lookups;
861	extern unsigned long make_stats_ht_collisions;
862
863	# ifdef __APPLE__
864	# include <malloc/malloc.h>
865	# define SIZE_OF_HEAP_BLOCK(ptr) malloc_size(ptr)
866
867	# elif defined(__linux__) /* glibc */
868	# include <malloc.h>
869	# define SIZE_OF_HEAP_BLOCK(ptr) malloc_usable_size(ptr)
870
871	# elif defined(_MSC_VER) \|\| defined(__OS2__)
872	# define SIZE_OF_HEAP_BLOCK(ptr) _msize(ptr)
873
874	# else
875	# include <stdlib.h>
876	# define SIZE_OF_HEAP_BLOCK(ptr) 0
877	#endif
878
879	# if defined(CONFIG_WITH_MAKE_STATS) && !defined(ELECTRIC_HEAP)
880	# define free xfree
881	extern void xfree (void *);
882	# endif
883
884	#endif
885
886	#ifdef CONFIG_WITH_IF_CONDITIONALS
887	extern int expr_eval_if_conditionals(char line, const struct floc flocp);
888	extern char expr_eval_to_string(char o, char *expr);
889	#endif
890
891	#ifdef KMK
892	extern char abspath(const char name, char *apath);
893	extern char func_breakpoint(char o, char *argv, const char funcname);
894	#endif

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