diff options
Diffstat (limited to 'make.h')
| -rw-r--r-- | make.h | 617 |
1 files changed, 617 insertions, 0 deletions
@@ -0,0 +1,617 @@ +/* Miscellaneous global declarations and portability cruft for GNU Make. +Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, +1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, +2010 Free Software Foundation, Inc. +This file is part of GNU Make. + +GNU Make is free software; you can redistribute it and/or modify it under the +terms of the GNU General Public License as published by the Free Software +Foundation; either version 3 of the License, or (at your option) any later +version. + +GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR +A PARTICULAR PURPOSE. See the GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along with +this program. If not, see <http://www.gnu.org/licenses/>. */ + +/* We use <config.h> instead of "config.h" so that a compilation + using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h + (which it would do because make.h was found in $srcdir). */ +#include <config.h> +#undef HAVE_CONFIG_H +#define HAVE_CONFIG_H 1 + +/* Specify we want GNU source code. This must be defined before any + system headers are included. */ + +#define _GNU_SOURCE 1 + +/* AIX requires this to be the first thing in the file. */ +#if HAVE_ALLOCA_H +# include <alloca.h> +#else +# ifdef _AIX + #pragma alloca +# else +# if !defined(__GNUC__) && !defined(WINDOWS32) +# ifndef alloca /* predefined by HP cc +Olibcalls */ +char *alloca (); +# endif +# endif +# endif +#endif + + +#ifdef CRAY +/* This must happen before #include <signal.h> so + that the declaration therein is changed. */ +# define signal bsdsignal +#endif + +/* If we're compiling for the dmalloc debugger, turn off string inlining. */ +#if defined(HAVE_DMALLOC_H) && defined(__GNUC__) +# define __NO_STRING_INLINES +#endif + +#include <sys/types.h> +#include <sys/stat.h> +#include <signal.h> +#include <stdio.h> +#include <ctype.h> +#ifdef HAVE_SYS_TIMEB_H +/* SCO 3.2 "devsys 4.2" has a prototype for `ftime' in <time.h> that bombs + unless <sys/timeb.h> has been included first. Does every system have a + <sys/timeb.h>? If any does not, configure should check for it. */ +# include <sys/timeb.h> +#endif + +#if TIME_WITH_SYS_TIME +# include <sys/time.h> +# include <time.h> +#else +# if HAVE_SYS_TIME_H +# include <sys/time.h> +# else +# include <time.h> +# endif +#endif + +#include <errno.h> + +#ifndef errno +extern int errno; +#endif + +#ifndef isblank +# define isblank(c) ((c) == ' ' || (c) == '\t') +#endif + +#ifdef HAVE_UNISTD_H +# include <unistd.h> +/* Ultrix's unistd.h always defines _POSIX_VERSION, but you only get + POSIX.1 behavior with `cc -YPOSIX', which predefines POSIX itself! */ +# if defined (_POSIX_VERSION) && !defined (ultrix) && !defined (VMS) +# define POSIX 1 +# endif +#endif + +/* Some systems define _POSIX_VERSION but are not really POSIX.1. */ +#if (defined (butterfly) || defined (__arm) || (defined (__mips) && defined (_SYSTYPE_SVR3)) || (defined (sequent) && defined (i386))) +# undef POSIX +#endif + +#if !defined (POSIX) && defined (_AIX) && defined (_POSIX_SOURCE) +# define POSIX 1 +#endif + +#ifndef RETSIGTYPE +# define RETSIGTYPE void +#endif + +#ifndef sigmask +# define sigmask(sig) (1 << ((sig) - 1)) +#endif + +#ifndef HAVE_SA_RESTART +# define SA_RESTART 0 +#endif + +#ifdef HAVE_LIMITS_H +# include <limits.h> +#endif +#ifdef HAVE_SYS_PARAM_H +# include <sys/param.h> +#endif + +#ifndef PATH_MAX +# ifndef POSIX +# define PATH_MAX MAXPATHLEN +# endif +#endif +#ifndef MAXPATHLEN +# define MAXPATHLEN 1024 +#endif + +#ifdef PATH_MAX +# define GET_PATH_MAX PATH_MAX +# define PATH_VAR(var) char var[PATH_MAX] +#else +# define NEED_GET_PATH_MAX 1 +# define GET_PATH_MAX (get_path_max ()) +# define PATH_VAR(var) char *var = alloca (GET_PATH_MAX) +unsigned int get_path_max (void); +#endif + +#ifndef CHAR_BIT +# define CHAR_BIT 8 +#endif + +/* Nonzero if the integer type T is signed. */ +#define INTEGER_TYPE_SIGNED(t) ((t) -1 < 0) + +/* The minimum and maximum values for the integer type T. + Use ~ (t) 0, not -1, for portability to 1's complement hosts. */ +#define INTEGER_TYPE_MINIMUM(t) \ + (! INTEGER_TYPE_SIGNED (t) ? (t) 0 : ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1)) +#define INTEGER_TYPE_MAXIMUM(t) (~ (t) 0 - INTEGER_TYPE_MINIMUM (t)) + +#ifndef CHAR_MAX +# define CHAR_MAX INTEGER_TYPE_MAXIMUM (char) +#endif + +#ifdef STAT_MACROS_BROKEN +# ifdef S_ISREG +# undef S_ISREG +# endif +# ifdef S_ISDIR +# undef S_ISDIR +# endif +#endif /* STAT_MACROS_BROKEN. */ + +#ifndef S_ISREG +# define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG) +#endif +#ifndef S_ISDIR +# define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR) +#endif + +#ifdef VMS +# include <types.h> +# include <unixlib.h> +# include <unixio.h> +# include <perror.h> +/* Needed to use alloca on VMS. */ +# include <builtins.h> +#endif + +#ifndef __attribute__ +/* This feature is available in gcc versions 2.5 and later. */ +# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__ +# define __attribute__(x) +# endif +/* The __-protected variants of `format' and `printf' attributes + are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */ +# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7) +# define __format__ format +# define __printf__ printf +# endif +#endif +#define UNUSED __attribute__ ((unused)) + +#if defined (STDC_HEADERS) || defined (__GNU_LIBRARY__) +# include <stdlib.h> +# include <string.h> +# define ANSI_STRING 1 +#else /* No standard headers. */ +# ifdef HAVE_STRING_H +# include <string.h> +# define ANSI_STRING 1 +# else +# include <strings.h> +# endif +# ifdef HAVE_MEMORY_H +# include <memory.h> +# endif +# ifdef HAVE_STDLIB_H +# include <stdlib.h> +# else +void *malloc (int); +void *realloc (void *, int); +void free (void *); + +void abort (void) __attribute__ ((noreturn)); +void exit (int) __attribute__ ((noreturn)); +# endif /* HAVE_STDLIB_H. */ + +#endif /* Standard headers. */ + +/* These should be in stdlib.h. Make sure we have them. */ +#ifndef EXIT_SUCCESS +# define EXIT_SUCCESS 0 +#endif +#ifndef EXIT_FAILURE +# define EXIT_FAILURE 1 +#endif + +#ifndef ANSI_STRING + +/* SCO Xenix has a buggy macro definition in <string.h>. */ +#undef strerror +#if !defined(__DECC) +char *strerror (int errnum); +#endif + +#endif /* !ANSI_STRING. */ +#undef ANSI_STRING + +#if HAVE_INTTYPES_H +# include <inttypes.h> +#endif +#define FILE_TIMESTAMP uintmax_t + +#if !defined(HAVE_STRSIGNAL) +char *strsignal (int signum); +#endif + +/* ISDIGIT offers the following features: + - Its arg may be any int or unsigned int; it need not be an unsigned char. + - It's guaranteed to evaluate its argument exactly once. + NOTE! Make relies on this behavior, don't change it! + - It's typically faster. + POSIX 1003.2-1992 section 2.5.2.1 page 50 lines 1556-1558 says that + only '0' through '9' are digits. Prefer ISDIGIT to isdigit() unless + it's important to use the locale's definition of `digit' even when the + host does not conform to POSIX. */ +#define ISDIGIT(c) ((unsigned) (c) - '0' <= 9) + +/* Test if two strings are equal. Is this worthwhile? Should be profiled. */ +#define streq(a, b) \ + ((a) == (b) || \ + (*(a) == *(b) && (*(a) == '\0' || !strcmp ((a) + 1, (b) + 1)))) + +/* Test if two strings are equal, but match case-insensitively on systems + which have case-insensitive filesystems. Should only be used for + filenames! */ +#ifdef HAVE_CASE_INSENSITIVE_FS +# define patheq(a, b) \ + ((a) == (b) \ + || (tolower((unsigned char)*(a)) == tolower((unsigned char)*(b)) \ + && (*(a) == '\0' || !strcasecmp ((a) + 1, (b) + 1)))) +#else +# define patheq(a, b) streq(a, b) +#endif + +#define strneq(a, b, l) (strncmp ((a), (b), (l)) == 0) + +#if defined(__GNUC__) || defined(ENUM_BITFIELDS) +# define ENUM_BITFIELD(bits) :bits +#else +# define ENUM_BITFIELD(bits) +#endif + +/* Handle gettext and locales. */ + +#if HAVE_LOCALE_H +# include <locale.h> +#else +# define setlocale(category, locale) +#endif + +#include <gettext.h> + +#define _(msgid) gettext (msgid) +#define N_(msgid) gettext_noop (msgid) +#define S_(msg1,msg2,num) ngettext (msg1,msg2,num) + +/* Handle other OSs. */ +#ifndef PATH_SEPARATOR_CHAR +# if defined(HAVE_DOS_PATHS) +# define PATH_SEPARATOR_CHAR ';' +# elif defined(VMS) +# define PATH_SEPARATOR_CHAR ',' +# else +# define PATH_SEPARATOR_CHAR ':' +# endif +#endif + +/* This is needed for getcwd() and chdir(), on some W32 systems. */ +#if defined(HAVE_DIRECT_H) +# include <direct.h> +#endif + +#ifdef WINDOWS32 +# include <fcntl.h> +# include <malloc.h> +# define pipe(_p) _pipe((_p), 512, O_BINARY) +# define kill(_pid,_sig) w32_kill((_pid),(_sig)) + +void sync_Path_environment (void); +int w32_kill (pid_t pid, int sig); +char *end_of_token_w32 (const char *s, char stopchar); +int find_and_set_default_shell (const char *token); + +/* indicates whether or not we have Bourne shell */ +extern int no_default_sh_exe; + +/* is default_shell unixy? */ +extern int unixy_shell; +#endif /* WINDOWS32 */ + +#if defined(HAVE_SYS_RESOURCE_H) && defined(HAVE_GETRLIMIT) && defined(HAVE_SETRLIMIT) +# define SET_STACK_SIZE +#endif +#ifdef SET_STACK_SIZE +# include <sys/resource.h> +struct rlimit stack_limit; +#endif + +struct floc + { + const char *filenm; + unsigned long lineno; + }; +#define NILF ((struct floc *)0) + +#define STRING_SIZE_TUPLE(_s) (_s), (sizeof (_s)-1) + + +/* We have to have stdarg.h or varargs.h AND v*printf or doprnt to use + variadic versions of these functions. */ + +#if HAVE_STDARG_H || HAVE_VARARGS_H +# if HAVE_VPRINTF || HAVE_DOPRNT +# define USE_VARIADIC 1 +# endif +#endif + +#if HAVE_ANSI_COMPILER && USE_VARIADIC && HAVE_STDARG_H +const char *concat (unsigned int, ...); +void message (int prefix, const char *fmt, ...) + __attribute__ ((__format__ (__printf__, 2, 3))); +void error (const struct floc *flocp, const char *fmt, ...) + __attribute__ ((__format__ (__printf__, 2, 3))); +void fatal (const struct floc *flocp, const char *fmt, ...) + __attribute__ ((noreturn, __format__ (__printf__, 2, 3))); +#else +const char *concat (); +void message (); +void error (); +void fatal (); +#endif + +void die (int) __attribute__ ((noreturn)); +void log_working_directory (int); +void pfatal_with_name (const char *) __attribute__ ((noreturn)); +void perror_with_name (const char *, const char *); +void *xmalloc (unsigned int); +void *xcalloc (unsigned int); +void *xrealloc (void *, unsigned int); +char *xstrdup (const char *); +char *xstrndup (const char *, unsigned int); +char *find_next_token (const char **, unsigned int *); +char *next_token (const char *); +char *end_of_token (const char *); +void collapse_continuations (char *); +char *lindex (const char *, const char *, int); +int alpha_compare (const void *, const void *); +void print_spaces (unsigned int); +char *find_percent (char *); +const char *find_percent_cached (const char **); +FILE *open_tmpfile (char **, const char *); + +#ifndef NO_ARCHIVES +int ar_name (const char *); +void ar_parse_name (const char *, char **, char **); +int ar_touch (const char *); +time_t ar_member_date (const char *); + +typedef long int (*ar_member_func_t) (int desc, const char *mem, int truncated, + long int hdrpos, long int datapos, + long int size, long int date, int uid, + int gid, int mode, const void *arg); + +long int ar_scan (const char *archive, ar_member_func_t function, const void *arg); +int ar_name_equal (const char *name, const char *mem, int truncated); +#ifndef VMS +int ar_member_touch (const char *arname, const char *memname); +#endif +#endif + +int dir_file_exists_p (const char *, const char *); +int file_exists_p (const char *); +int file_impossible_p (const char *); +void file_impossible (const char *); +const char *dir_name (const char *); +void hash_init_directories (void); + +void define_default_variables (void); +void set_default_suffixes (void); +void install_default_suffix_rules (void); +void install_default_implicit_rules (void); + +void build_vpath_lists (void); +void construct_vpath_list (char *pattern, char *dirpath); +const char *vpath_search (const char *file, FILE_TIMESTAMP *mtime_ptr, + unsigned int* vpath_index, unsigned int* path_index); +int gpath_search (const char *file, unsigned int len); + +void construct_include_path (const char **arg_dirs); + +void user_access (void); +void make_access (void); +void child_access (void); + +void close_stdout (void); + +char *strip_whitespace (const char **begpp, const char **endpp); + +/* String caching */ +void strcache_init (void); +void strcache_print_stats (const char *prefix); +int strcache_iscached (const char *str); +const char *strcache_add (const char *str); +const char *strcache_add_len (const char *str, int len); +int strcache_setbufsize (int size); + +#ifdef HAVE_VFORK_H +# include <vfork.h> +#endif + +/* We omit these declarations on non-POSIX systems which define _POSIX_VERSION, + because such systems often declare them in header files anyway. */ + +#if !defined (__GNU_LIBRARY__) && !defined (POSIX) && !defined (_POSIX_VERSION) && !defined(WINDOWS32) + +long int atol (); +# ifndef VMS +long int lseek (); +# endif + +#endif /* Not GNU C library or POSIX. */ + +#ifdef HAVE_GETCWD +# if !defined(VMS) && !defined(__DECC) +char *getcwd (); +# endif +#else +char *getwd (); +# define getcwd(buf, len) getwd (buf) +#endif + +#if !HAVE_STRCASECMP +# if HAVE_STRICMP +# define strcasecmp stricmp +# elif HAVE_STRCMPI +# define strcasecmp strcmpi +# else +/* Create our own, in misc.c */ +int strcasecmp (const char *s1, const char *s2); +# endif +#endif + +#if !HAVE_STRNCASECMP +# if HAVE_STRNICMP +# define strncasecmp strnicmp +# elif HAVE_STRNCMPI +# define strncasecmp strncmpi +# else +/* Create our own, in misc.c */ +int strncasecmp (const char *s1, const char *s2, int n); +# endif +#endif + +extern const struct floc *reading_file; +extern const struct floc **expanding_var; + +extern char **environ; + +extern int just_print_flag, silent_flag, ignore_errors_flag, keep_going_flag; +extern int print_data_base_flag, question_flag, touch_flag, always_make_flag; +extern int env_overrides, no_builtin_rules_flag, no_builtin_variables_flag; +extern int print_version_flag, print_directory_flag, check_symlink_flag; +extern int warn_undefined_variables_flag, posix_pedantic, not_parallel; +extern int second_expansion, clock_skew_detected, rebuilding_makefiles; +extern int one_shell; + +/* can we run commands via 'sh -c xxx' or must we use batch files? */ +extern int batch_mode_shell; + +/* Resetting the command script introduction prefix character. */ +#define RECIPEPREFIX_NAME ".RECIPEPREFIX" +#define RECIPEPREFIX_DEFAULT '\t' +extern char cmd_prefix; + +extern unsigned int job_slots; +extern int job_fds[2]; +extern int job_rfd; +#ifndef NO_FLOAT +extern double max_load_average; +#else +extern int max_load_average; +#endif + +extern char *program; +extern char *starting_directory; +extern unsigned int makelevel; +extern char *version_string, *remote_description, *make_host; + +extern unsigned int commands_started; + +extern int handling_fatal_signal; + + +#ifndef MIN +#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b)) +#endif +#ifndef MAX +#define MAX(_a,_b) ((_a)>(_b)?(_a):(_b)) +#endif + +#ifdef VMS +# define MAKE_SUCCESS 1 +# define MAKE_TROUBLE 2 +# define MAKE_FAILURE 3 +#else +# define MAKE_SUCCESS 0 +# define MAKE_TROUBLE 1 +# define MAKE_FAILURE 2 +#endif + +/* Set up heap debugging library dmalloc. */ + +#ifdef HAVE_DMALLOC_H +#include <dmalloc.h> +#endif + +#ifndef initialize_main +# ifdef __EMX__ +# define initialize_main(pargc, pargv) \ + { _wildcard(pargc, pargv); _response(pargc, pargv); } +# else +# define initialize_main(pargc, pargv) +# endif +#endif + +#ifdef __EMX__ +# if !defined chdir +# define chdir _chdir2 +# endif +# if !defined getcwd +# define getcwd _getcwd2 +# endif + +/* NO_CHDIR2 causes make not to use _chdir2() and _getcwd2() instead of + chdir() and getcwd(). This avoids some error messages for the + make testsuite but restricts the drive letter support. */ +# ifdef NO_CHDIR2 +# warning NO_CHDIR2: usage of drive letters restricted +# undef chdir +# undef getcwd +# endif +#endif + +#ifndef initialize_main +# define initialize_main(pargc, pargv) +#endif + + +/* Some systems (like Solaris, PTX, etc.) do not support the SA_RESTART flag + properly according to POSIX. So, we try to wrap common system calls with + checks for EINTR. Note that there are still plenty of system calls that + can fail with EINTR but this, reportedly, gets the vast majority of + failure cases. If you still experience failures you'll need to either get + a system where SA_RESTART works, or you need to avoid -j. */ + +#define EINTRLOOP(_v,_c) while (((_v)=_c)==-1 && errno==EINTR) + +/* While system calls that return integers are pretty consistent about + returning -1 on failure and setting errno in that case, functions that + return pointers are not always so well behaved. Sometimes they return + NULL for expected behavior: one good example is readdir() which returns + NULL at the end of the directory--and _doesn't_ reset errno. So, we have + to do it ourselves here. */ + +#define ENULLLOOP(_v,_c) do { errno = 0; (_v) = _c; } \ + while((_v)==0 && errno==EINTR) |