/* Get common system includes and various definitions and declarations based
on autoconf macros.
- Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC 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 2, or (at your option)
-any later version.
+GCC 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 2, or (at your option) any later
+version.
-GNU CC 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.
+GCC 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 GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+along with GCC; see the file COPYING. If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA. */
-#ifndef __GCC_SYSTEM_H__
-#define __GCC_SYSTEM_H__
+#ifndef GCC_SYSTEM_H
+#define GCC_SYSTEM_H
-/* This is the location of the online document giving information how
- to report bugs. If you change this string, also check for strings
- not under control of the preprocessor. */
-#define GCCBUGURL "<URL:http://www.gnu.org/software/gcc/bugs.html>"
-
-/* We must include stdarg.h/varargs.h before stdio.h. */
-#ifdef ANSI_PROTOTYPES
+/* We must include stdarg.h before stdio.h. */
#include <stdarg.h>
-#else
-#include <varargs.h>
-#endif
#ifndef va_copy
# ifdef __va_copy
# endif
#endif
+#ifdef HAVE_STDDEF_H
+# include <stddef.h>
+#endif
+
#include <stdio.h>
/* Define a generic NULL if one hasn't already been defined. */
#endif
/* The compiler is not a multi-threaded application and therefore we
- do not have to use the locking functions.
+ do not have to use the locking functions. In fact, using the locking
+ functions can cause the compiler to be significantly slower under
+ I/O bound conditions (such as -g -O0 on very large source files).
- HAVE_DECL_PUTC_UNLOCKED actually indicates whether or not the IO
+ HAVE_DECL_PUTC_UNLOCKED actually indicates whether or not the stdio
code is multi-thread safe by default. If it is set to 0, then do
not worry about using the _unlocked functions.
-
- fputs_unlocked is an extension and needs to be prototyped specially. */
-
-#if defined HAVE_PUTC_UNLOCKED && (defined (HAVE_DECL_PUTC_UNLOCKED) && HAVE_DECL_PUTC_UNLOCKED)
-# undef putc
-# define putc(C, Stream) putc_unlocked (C, Stream)
-#endif
-#if defined HAVE_FPUTC_UNLOCKED && (defined (HAVE_DECL_PUTC_UNLOCKED) && HAVE_DECL_PUTC_UNLOCKED)
-# undef fputc
-# define fputc(C, Stream) fputc_unlocked (C, Stream)
-#endif
-#if defined HAVE_FPUTS_UNLOCKED && (defined (HAVE_DECL_PUTC_UNLOCKED) && HAVE_DECL_PUTC_UNLOCKED)
-# undef fputs
-# define fputs(String, Stream) fputs_unlocked (String, Stream)
-# if defined (HAVE_DECL_FPUTS_UNLOCKED) && !HAVE_DECL_FPUTS_UNLOCKED
-extern int fputs_unlocked PARAMS ((const char *, FILE *));
-# endif
-#endif
-
-#include <ctype.h>
-
-/* Jim Meyering writes:
- "... Some ctype macros are valid only for character codes that
- isascii says are ASCII (SGI's IRIX-4.0.5 is one such system --when
- using /bin/cc or gcc but without giving an ansi option). So, all
- ctype uses should be through macros like ISPRINT... If
- STDC_HEADERS is defined, then autoconf has verified that the ctype
- macros don't need to be guarded with references to isascii. ...
- Defining isascii to 1 should let any compiler worth its salt
- eliminate the && through constant folding."
+ fputs_unlocked, fwrite_unlocked, and fprintf_unlocked are
+ extensions and need to be prototyped by hand (since we do not
+ define _GNU_SOURCE). */
- Bruno Haible adds:
-
- "... Furthermore, isupper(c) etc. have an undefined result if c is
- outside the range -1 <= c <= 255. One is tempted to write isupper(c)
- with c being of type `char', but this is wrong if c is an 8-bit
- character >= 128 which gets sign-extended to a negative value.
- The macro ISUPPER protects against this as well." */
-
-#if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII)) || defined(HOST_EBCDIC)
-# define IN_CTYPE_DOMAIN(c) 1
-#else
-# define IN_CTYPE_DOMAIN(c) isascii(c)
-#endif
-
-/* The ctype functions are often implemented as macros which do
- lookups in arrays using the parameter as the offset. If the ctype
- function parameter is a char, then gcc will (appropriately) warn
- that a "subscript has type char". Using a (signed) char as a subscript
- is bad because you may get negative offsets and thus it is not 8-bit
- safe. The CTYPE_CONV macro ensures that the parameter is cast to an
- unsigned char when a char is passed in. When an int is passed in, the
- parameter is left alone so we don't lose EOF.
-*/
-
-#define CTYPE_CONV(CH) \
- (sizeof(CH) == sizeof(unsigned char) ? (int)(unsigned char)(CH) : (int)(CH))
+#if defined HAVE_DECL_PUTC_UNLOCKED && HAVE_DECL_PUTC_UNLOCKED
+# ifdef HAVE_PUTC_UNLOCKED
+# undef putc
+# define putc(C, Stream) putc_unlocked (C, Stream)
+# endif
+# ifdef HAVE_FPUTC_UNLOCKED
+# undef fputc
+# define fputc(C, Stream) fputc_unlocked (C, Stream)
+# endif
-/* WARNING! The argument to the ctype replacement macros below is
- evaluated more than once so it must not have side effects! */
+# ifdef HAVE_FPUTS_UNLOCKED
+# undef fputs
+# define fputs(String, Stream) fputs_unlocked (String, Stream)
+# if defined (HAVE_DECL_FPUTS_UNLOCKED) && !HAVE_DECL_FPUTS_UNLOCKED
+extern int fputs_unlocked (const char *, FILE *);
+# endif
+# endif
+# ifdef HAVE_FWRITE_UNLOCKED
+# undef fwrite
+# define fwrite(Ptr, Size, N, Stream) fwrite_unlocked (Ptr, Size, N, Stream)
+# if defined (HAVE_DECL_FWRITE_UNLOCKED) && !HAVE_DECL_FWRITE_UNLOCKED
+extern int fwrite_unlocked (const void *, size_t, size_t, FILE *);
+# endif
+# endif
+# ifdef HAVE_FPRINTF_UNLOCKED
+# undef fprintf
+/* We can't use a function-like macro here because we don't know if
+ we have varargs macros. */
+# define fprintf fprintf_unlocked
+# if defined (HAVE_DECL_FPRINTF_UNLOCKED) && !HAVE_DECL_FPRINTF_UNLOCKED
+extern int fprintf_unlocked (FILE *, const char *, ...);
+# endif
+# endif
-#ifdef isblank
-# define ISBLANK(c) (IN_CTYPE_DOMAIN (c) && isblank (CTYPE_CONV(c)))
-#else
-# define ISBLANK(c) ((c) == ' ' || (c) == '\t')
-#endif
-#ifdef isgraph
-# define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isgraph (CTYPE_CONV(c)))
-#else
-# define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isprint (CTYPE_CONV(c)) && !isspace (CTYPE_CONV(c)))
-#endif
-
-#define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint (CTYPE_CONV(c)))
-#define ISALNUM(c) (IN_CTYPE_DOMAIN (c) && isalnum (CTYPE_CONV(c)))
-#define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha (CTYPE_CONV(c)))
-#define ISCNTRL(c) (IN_CTYPE_DOMAIN (c) && iscntrl (CTYPE_CONV(c)))
-#define ISLOWER(c) (IN_CTYPE_DOMAIN (c) && islower (CTYPE_CONV(c)))
-#define ISPUNCT(c) (IN_CTYPE_DOMAIN (c) && ispunct (CTYPE_CONV(c)))
-#define ISSPACE(c) (IN_CTYPE_DOMAIN (c) && isspace (CTYPE_CONV(c)))
-#define ISUPPER(c) (IN_CTYPE_DOMAIN (c) && isupper (CTYPE_CONV(c)))
-#define ISXDIGIT(c) (IN_CTYPE_DOMAIN (c) && isxdigit (CTYPE_CONV(c)))
-#define ISDIGIT_LOCALE(c) (IN_CTYPE_DOMAIN (c) && isdigit (CTYPE_CONV(c)))
-
-#if STDC_HEADERS
-# define TOLOWER(c) (tolower (CTYPE_CONV(c)))
-# define TOUPPER(c) (toupper (CTYPE_CONV(c)))
-#else
-# define TOLOWER(c) (ISUPPER (c) ? tolower (CTYPE_CONV(c)) : (c))
-# define TOUPPER(c) (ISLOWER (c) ? toupper (CTYPE_CONV(c)) : (c))
#endif
-/* ISDIGIT differs from ISDIGIT_LOCALE, as follows:
- - 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.
- - 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_LOCALE 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)
+/* ??? Glibc's fwrite/fread_unlocked macros cause
+ "warning: signed and unsigned type in conditional expression". */
+#undef fread_unlocked
+#undef fwrite_unlocked
-/* Define a default escape character; its different for EBCDIC. */
-#ifndef TARGET_ESC
-#define TARGET_ESC 033
-#endif
+/* There are an extraordinary number of issues with <ctype.h>.
+ The last straw is that it varies with the locale. Use libiberty's
+ replacement instead. */
+#include <safe-ctype.h>
#include <sys/types.h>
#include <errno.h>
-#ifndef errno
+#if !defined (errno) && defined (HAVE_DECL_ERRNO) && !HAVE_DECL_ERRNO
extern int errno;
#endif
+/* Some of glibc's string inlines cause warnings. Plus we'd rather
+ rely on (and therefore test) GCC's string builtins. */
+#define __NO_STRING_INLINES
+
#ifdef STRING_WITH_STRINGS
# include <string.h>
# include <strings.h>
#ifdef HAVE_STDLIB_H
# include <stdlib.h>
-# ifdef USE_C_ALLOCA
-/* Note that systems that use glibc have a <stdlib.h> that includes
- <alloca.h> that defines alloca, so let USE_C_ALLOCA override this. */
-# undef alloca
#endif
+
+/* If we don't have an overriding definition, set SUCCESS_EXIT_CODE and
+ FATAL_EXIT_CODE to EXIT_SUCCESS and EXIT_FAILURE respectively,
+ or 0 and 1 if those macros are not defined. */
+#ifndef SUCCESS_EXIT_CODE
+# ifdef EXIT_SUCCESS
+# define SUCCESS_EXIT_CODE EXIT_SUCCESS
+# else
+# define SUCCESS_EXIT_CODE 0
+# endif
+#endif
+
+#ifndef FATAL_EXIT_CODE
+# ifdef EXIT_FAILURE
+# define FATAL_EXIT_CODE EXIT_FAILURE
+# else
+# define FATAL_EXIT_CODE 1
+# endif
#endif
#ifdef HAVE_UNISTD_H
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
+/* We use this identifier later and it appears in some vendor param.h's. */
+# undef PREFETCH
#endif
#if HAVE_LIMITS_H
# include <limits.h>
#endif
-/* Find HOST_WIDEST_INT and set its bit size, type and print macros.
- It will be the largest integer mode supported by the host which may
- (or may not) be larger than HOST_WIDE_INT. This must appear after
- <limits.h> since we only use `long long' if its bigger than a
- `long' and also if it is supported by macros in limits.h. For old
- hosts which don't have a limits.h (and thus won't include it in
- stage2 cause we don't rerun configure) we assume gcc supports long
- long.) Note, you won't get these defined if you don't include
- {ht}config.h before this file to set the HOST_BITS_PER_* macros. */
-
-#ifndef HOST_WIDEST_INT
-# if defined (HOST_BITS_PER_LONG) && defined (HOST_BITS_PER_LONGLONG)
-# if (HOST_BITS_PER_LONGLONG > HOST_BITS_PER_LONG) && (defined (LONG_LONG_MAX) || defined (LONGLONG_MAX) || defined (LLONG_MAX) || defined (__GNUC__))
-# define HOST_BITS_PER_WIDEST_INT HOST_BITS_PER_LONGLONG
-# define HOST_WIDEST_INT long long
-# define HOST_WIDEST_INT_PRINT_DEC "%lld"
-# define HOST_WIDEST_INT_PRINT_UNSIGNED "%llu"
-# define HOST_WIDEST_INT_PRINT_HEX "0x%llx"
-# else
-# define HOST_BITS_PER_WIDEST_INT HOST_BITS_PER_LONG
-# define HOST_WIDEST_INT long
-# define HOST_WIDEST_INT_PRINT_DEC "%ld"
-# define HOST_WIDEST_INT_PRINT_UNSIGNED "%lu"
-# define HOST_WIDEST_INT_PRINT_HEX "0x%lx"
-# endif /*(long long>long) && (LONG_LONG_MAX||LONGLONG_MAX||LLONG_MAX||GNUC)*/
-# endif /* defined(HOST_BITS_PER_LONG) && defined(HOST_BITS_PER_LONGLONG) */
-#endif /* ! HOST_WIDEST_INT */
+/* Get definitions of HOST_WIDE_INT and HOST_WIDEST_INT. */
+#include "hwint.h"
+
+/* A macro to determine whether a VALUE lies inclusively within a
+ certain range without evaluating the VALUE more than once. This
+ macro won't warn if the VALUE is unsigned and the LOWER bound is
+ zero, as it would e.g. with "VALUE >= 0 && ...". Note the LOWER
+ bound *is* evaluated twice, and LOWER must not be greater than
+ UPPER. However the bounds themselves can be either positive or
+ negative. */
+#define IN_RANGE(VALUE, LOWER, UPPER) \
+ ((unsigned HOST_WIDE_INT) ((VALUE) - (LOWER)) <= ((UPPER) - (LOWER)))
/* Infrastructure for defining missing _MAX and _MIN macros. Note that
macros defined with these cannot be used in #if. */
#ifndef WSTOPSIG
#define WSTOPSIG WEXITSTATUS
#endif
+#ifndef WCOREDUMP
+#define WCOREDUMP(S) ((S) & WCOREFLG)
+#endif
+#ifndef WCOREFLG
+#define WCOREFLG 0200
+#endif
/* The HAVE_DECL_* macros are three-state, undefined, 0 or 1. If they
are defined to 0 then we must provide the relevant declaration
here. These checks will be in the undefined state while configure
is running so be careful to test "defined (HAVE_DECL_*)". */
-#ifndef bcopy
-# ifdef HAVE_BCOPY
-# if defined (HAVE_DECL_BCOPY) && !HAVE_DECL_BCOPY
-extern void bcopy PARAMS ((const PTR, PTR, size_t));
-# endif
-# else /* ! HAVE_BCOPY */
-# define bcopy(src,dst,len) memmove((dst),(src),(len))
-# endif
-#endif
-
#if defined (HAVE_DECL_ATOF) && !HAVE_DECL_ATOF
-extern double atof PARAMS ((const char *));
+extern double atof (const char *);
#endif
#if defined (HAVE_DECL_ATOL) && !HAVE_DECL_ATOL
-extern long atol PARAMS ((const char *));
+extern long atol (const char *);
#endif
#if defined (HAVE_DECL_FREE) && !HAVE_DECL_FREE
-extern void free PARAMS ((PTR));
+extern void free (void *);
#endif
#if defined (HAVE_DECL_GETCWD) && !HAVE_DECL_GETCWD
-extern char *getcwd PARAMS ((char *, size_t));
+extern char *getcwd (char *, size_t);
#endif
#if defined (HAVE_DECL_GETENV) && !HAVE_DECL_GETENV
-extern char *getenv PARAMS ((const char *));
+extern char *getenv (const char *);
#endif
#if defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT
-extern int getopt PARAMS ((int, char **, char *));
+extern int getopt (int, char * const *, const char *);
#endif
#if defined (HAVE_DECL_GETWD) && !HAVE_DECL_GETWD
-extern char *getwd PARAMS ((char *));
+extern char *getwd (char *);
#endif
#if defined (HAVE_DECL_SBRK) && !HAVE_DECL_SBRK
-extern PTR sbrk PARAMS ((int));
+extern void *sbrk (int);
#endif
#if defined (HAVE_DECL_STRSTR) && !HAVE_DECL_STRSTR
-extern char *strstr PARAMS ((const char *, const char *));
+extern char *strstr (const char *, const char *);
#endif
#ifdef HAVE_MALLOC_H
#endif
#if defined (HAVE_DECL_MALLOC) && !HAVE_DECL_MALLOC
-extern PTR malloc PARAMS ((size_t));
+extern void *malloc (size_t);
#endif
#if defined (HAVE_DECL_CALLOC) && !HAVE_DECL_CALLOC
-extern PTR calloc PARAMS ((size_t, size_t));
+extern void *calloc (size_t, size_t);
#endif
#if defined (HAVE_DECL_REALLOC) && !HAVE_DECL_REALLOC
-extern PTR realloc PARAMS ((PTR, size_t));
+extern void *realloc (void *, size_t);
#endif
/* If the system doesn't provide strsignal, we get it defined in
- libiberty but no declaration is supplied. */
-#ifndef HAVE_STRSIGNAL
+ libiberty but no declaration is supplied. */
+#if !defined (HAVE_STRSIGNAL) \
+ || (defined (HAVE_DECL_STRSIGNAL) && !HAVE_DECL_STRSIGNAL)
# ifndef strsignal
-extern const char *strsignal PARAMS ((int));
+extern const char *strsignal (int);
# endif
#endif
#ifdef HAVE_GETRLIMIT
# if defined (HAVE_DECL_GETRLIMIT) && !HAVE_DECL_GETRLIMIT
# ifndef getrlimit
-# ifdef ANSI_PROTOTYPES
struct rlimit;
-# endif
-extern int getrlimit PARAMS ((int, struct rlimit *));
+extern int getrlimit (int, struct rlimit *);
# endif
# endif
#endif
#ifdef HAVE_SETRLIMIT
# if defined (HAVE_DECL_SETRLIMIT) && !HAVE_DECL_SETRLIMIT
# ifndef setrlimit
-# ifdef ANSI_PROTOTYPES
struct rlimit;
-# endif
-extern int setrlimit PARAMS ((int, const struct rlimit *));
+extern int setrlimit (int, const struct rlimit *);
# endif
# endif
#endif
-/* HAVE_VOLATILE only refers to the stage1 compiler. We also check
- __STDC__ and assume gcc sets it and has volatile in stage >=2. */
-#if !defined(HAVE_VOLATILE) && !defined(__STDC__) && !defined(volatile)
-#define volatile
+#if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT
+extern void abort (void);
#endif
-#if defined (HAVE_DECL_ABORT) && !HAVE_DECL_ABORT
-extern void abort PARAMS ((void));
+#if defined (HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF
+extern int snprintf (char *, size_t, const char *, ...);
#endif
/* 1 if we have C99 designated initializers. */
+#if !defined(HAVE_DESIGNATED_INITIALIZERS)
#define HAVE_DESIGNATED_INITIALIZERS \
((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
+#endif
+
+/* 1 if we have _Bool. */
+#ifndef HAVE__BOOL
+# define HAVE__BOOL \
+ ((GCC_VERSION >= 3000) || (__STDC_VERSION__ >= 199901L))
+#endif
-/* Define a STRINGIFY macro that's right for ANSI or traditional C.
- Note: if the argument passed to STRINGIFY is itself a macro, eg
- #define foo bar, STRINGIFY(foo) will produce "foo", not "bar".
- Although the __STDC__ case could be made to expand this via a layer
- of indirection, the traditional C case can not do so. Therefore
- this behavior is not supported. */
-#ifndef STRINGIFY
-# ifdef HAVE_STRINGIZE
-# define STRINGIFY(STRING) #STRING
-# else
-# define STRINGIFY(STRING) "STRING"
-# endif
-#endif /* ! STRINGIFY */
#if HAVE_SYS_STAT_H
# include <sys/stat.h>
# define STDERR_FILENO 2
#endif
-/* Some systems have mkdir that takes a single argument. */
+/* Some systems have mkdir that takes a single argument. */
#ifdef MKDIR_TAKES_ONE_ARG
# define mkdir(a,b) mkdir(a)
#endif
#ifndef HOST_PTR_PRINTF
# ifdef HAVE_PRINTF_PTR
# define HOST_PTR_PRINTF "%p"
+# elif SIZEOF_INT == SIZEOF_VOID_P
+# define HOST_PTR_PRINTF "%x"
+# elif SIZEOF_LONG == SIZEOF_VOID_P
+# define HOST_PTR_PRINTF "%lx"
# else
-# define HOST_PTR_PRINTF \
- (sizeof (int) == sizeof (char *) ? "%x" \
- : sizeof (long) == sizeof (char *) ? "%lx" : "%llx")
+# define HOST_PTR_PRINTF "%llx"
# endif
#endif /* ! HOST_PTR_PRINTF */
#define PATH_SEPARATOR ':'
#endif
+/* Filename handling macros. */
+#include "filenames.h"
+
+/* These should be phased out in favor of IS_DIR_SEPARATOR, where possible. */
#ifndef DIR_SEPARATOR
-#define DIR_SEPARATOR '/'
+# define DIR_SEPARATOR '/'
+# ifdef HAVE_DOS_BASED_FILE_SYSTEM
+# define DIR_SEPARATOR_2 '\\'
+# endif
#endif
-/* Define IS_DIR_SEPARATOR. */
-#ifndef DIR_SEPARATOR_2
-# define IS_DIR_SEPARATOR(ch) ((ch) == DIR_SEPARATOR)
-#else /* DIR_SEPARATOR_2 */
-# define IS_DIR_SEPARATOR(ch) \
- (((ch) == DIR_SEPARATOR) || ((ch) == DIR_SEPARATOR_2))
-#endif /* DIR_SEPARATOR_2 */
-
-/* Get libiberty declarations. */
+/* Get libiberty declarations. */
#include "libiberty.h"
-/* Make sure that ONLY_INT_FIELDS has an integral value. */
-#ifdef ONLY_INT_FIELDS
-#undef ONLY_INT_FIELDS
-#define ONLY_INT_FIELDS 1
-#else
-#define ONLY_INT_FIELDS 0
-#endif
-
/* Provide a default for the HOST_BIT_BUCKET.
This suffices for POSIX-like hosts. */
#define HOST_BIT_BUCKET "/dev/null"
#endif
-/* Enumerated bitfields are safe to use unless we've been explictly told
- otherwise or if they are signed. */
-
-#define USE_ENUM_BITFIELDS (__GNUC__ || (!ONLY_INT_FIELDS && ENUM_BITFIELDS_ARE_UNSIGNED))
+/* Be conservative and only use enum bitfields with GCC. Likewise for
+ char bitfields.
+ FIXME: provide a complete autoconf test for buggy enum bitfields. */
-#if USE_ENUM_BITFIELDS
+#if (GCC_VERSION > 2000)
#define ENUM_BITFIELD(TYPE) enum TYPE
+#define CHAR_BITFIELD unsigned char
#else
#define ENUM_BITFIELD(TYPE) unsigned int
+#define CHAR_BITFIELD unsigned int
#endif
#ifndef offsetof
-#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
-#endif
-
-/* Traditional C cannot initialize union members of structs. Provide
- a macro which expands appropriately to handle it. This only works
- if you intend to initalize the union member to zero since it relies
- on default initialization to zero in the traditional C case. */
-#ifdef __STDC__
-#define UNION_INIT_ZERO , {0}
-#else
-#define UNION_INIT_ZERO
-#endif
-
-/* GCC now gives implicit declaration warnings for undeclared builtins. */
-#if defined(__GNUC__) && defined (__SIZE_TYPE__)
-extern void *alloca (__SIZE_TYPE__);
+#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *) 0)->MEMBER)
#endif
/* Various error reporting routines want to use __FUNCTION__. */
#endif /* ! __FUNCTION__ */
#endif
-#endif /* __GCC_SYSTEM_H__ */
+/* __builtin_expect(A, B) evaluates to A, but notifies the compiler that
+ the most likely value of A is B. This feature was added at some point
+ between 2.95 and 3.0. Let's use 3.0 as the lower bound for now. */
+#if (GCC_VERSION < 3000)
+#define __builtin_expect(a, b) (a)
+#endif
+
+/* Provide some sort of boolean type. We use stdbool.h if it's
+ available. This must be after all inclusion of system headers,
+ as some of them will mess us up. */
+#undef bool
+#undef true
+#undef false
+#undef TRUE
+#undef FALSE
+
+#ifdef HAVE_STDBOOL_H
+# include <stdbool.h>
+#else
+# if !HAVE__BOOL
+typedef char _Bool;
+# endif
+# define bool _Bool
+# define true 1
+# define false 0
+#endif
+
+#define TRUE true
+#define FALSE false
+
+/* As the last action in this file, we poison the identifiers that
+ shouldn't be used. Note, luckily gcc-3.0's token-based integrated
+ preprocessor won't trip on poisoned identifiers that arrive from
+ the expansion of macros. E.g. #define strrchr rindex, won't error
+ if rindex is poisoned after this directive is issued and later on
+ strrchr is called.
+
+ Note: We define bypass macros for the few cases where we really
+ want to use the libc memory allocation routines. Otherwise we
+ insist you use the "x" versions from libiberty. */
+
+#define really_call_malloc malloc
+#define really_call_calloc calloc
+#define really_call_realloc realloc
+
+#if defined(FLEX_SCANNER) || defined(YYBISON)
+/* Flex and bison use malloc and realloc. Yuk. Note that this means
+ really_call_* cannot be used in a .l or .y file. */
+#define malloc xmalloc
+#define realloc xrealloc
+#endif
+
+#if (GCC_VERSION >= 3000)
+
+/* Note autoconf checks for prototype declarations and includes
+ system.h while doing so. Only poison these tokens if actually
+ compiling gcc, so that the autoconf declaration tests for malloc
+ etc don't spuriously fail. */
+#ifdef IN_GCC
+#undef calloc
+#undef strdup
+ #pragma GCC poison calloc strdup
+
+#if !defined(FLEX_SCANNER) && !defined(YYBISON)
+#undef malloc
+#undef realloc
+ #pragma GCC poison malloc realloc
+#endif
+
+/* Old target macros that have moved to the target hooks structure. */
+ #pragma GCC poison ASM_OPEN_PAREN ASM_CLOSE_PAREN \
+ FUNCTION_PROLOGUE FUNCTION_EPILOGUE \
+ FUNCTION_END_PROLOGUE FUNCTION_BEGIN_EPILOGUE \
+ DECL_MACHINE_ATTRIBUTES COMP_TYPE_ATTRIBUTES INSERT_ATTRIBUTES \
+ VALID_MACHINE_DECL_ATTRIBUTE VALID_MACHINE_TYPE_ATTRIBUTE \
+ SET_DEFAULT_TYPE_ATTRIBUTES SET_DEFAULT_DECL_ATTRIBUTES \
+ MERGE_MACHINE_TYPE_ATTRIBUTES MERGE_MACHINE_DECL_ATTRIBUTES \
+ MD_INIT_BUILTINS MD_EXPAND_BUILTIN ASM_OUTPUT_CONSTRUCTOR \
+ ASM_OUTPUT_DESTRUCTOR SIGNED_CHAR_SPEC MAX_CHAR_TYPE_SIZE \
+ WCHAR_UNSIGNED UNIQUE_SECTION SELECT_SECTION SELECT_RTX_SECTION \
+ ENCODE_SECTION_INFO STRIP_NAME_ENCODING ASM_GLOBALIZE_LABEL \
+ ASM_OUTPUT_MI_THUNK CONST_COSTS RTX_COSTS DEFAULT_RTX_COSTS \
+ ADDRESS_COST MACHINE_DEPENDENT_REORG ASM_FILE_START ASM_FILE_END \
+ ASM_SIMPLIFY_DWARF_ADDR INIT_TARGET_OPTABS INIT_SUBTARGET_OPTABS \
+ INIT_GOFAST_OPTABS MULSI3_LIBCALL MULDI3_LIBCALL DIVSI3_LIBCALL \
+ DIVDI3_LIBCALL UDIVSI3_LIBCALL UDIVDI3_LIBCALL MODSI3_LIBCALL \
+ MODDI3_LIBCALL UMODSI3_LIBCALL UMODDI3_LIBCALL BUILD_VA_LIST_TYPE
+
+/* Other obsolete target macros, or macros that used to be in target
+ headers and were not used, and may be obsolete or may never have
+ been used. */
+ #pragma GCC poison INT_ASM_OP ASM_OUTPUT_EH_REGION_BEG CPP_PREDEFINES \
+ ASM_OUTPUT_EH_REGION_END ASM_OUTPUT_LABELREF_AS_INT SMALL_STACK \
+ DOESNT_NEED_UNWINDER EH_TABLE_LOOKUP OBJC_SELECTORS_WITHOUT_LABELS \
+ OMIT_EH_TABLE EASY_DIV_EXPR IMPLICIT_FIX_EXPR \
+ LONGJMP_RESTORE_FROM_STACK MAX_INT_TYPE_SIZE ASM_IDENTIFY_GCC \
+ STDC_VALUE TRAMPOLINE_ALIGN ASM_IDENTIFY_GCC_AFTER_SOURCE \
+ SLOW_ZERO_EXTEND SUBREG_REGNO_OFFSET DWARF_LINE_MIN_INSTR_LENGTH \
+ TRADITIONAL_RETURN_FLOAT NO_BUILTIN_SIZE_TYPE \
+ NO_BUILTIN_PTRDIFF_TYPE NO_BUILTIN_WCHAR_TYPE NO_BUILTIN_WINT_TYPE \
+ BLOCK_PROFILER BLOCK_PROFILER_CODE FUNCTION_BLOCK_PROFILER \
+ FUNCTION_BLOCK_PROFILER_EXIT MACHINE_STATE_SAVE \
+ MACHINE_STATE_RESTORE SCCS_DIRECTIVE SECTION_ASM_OP \
+ ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL ASM_OUTPUT_INTERNAL_LABEL \
+ OBJC_PROLOGUE ALLOCATE_TRAMPOLINE HANDLE_PRAGMA ROUND_TYPE_SIZE \
+ ROUND_TYPE_SIZE_UNIT CONST_SECTION_ASM_OP CRT_GET_RFIB_TEXT \
+ DBX_LBRAC_FIRST DBX_OUTPUT_ENUM DBX_OUTPUT_SOURCE_FILENAME \
+ DBX_WORKING_DIRECTORY INSN_CACHE_DEPTH INSN_CACHE_SIZE \
+ INSN_CACHE_LINE_WIDTH INIT_SECTION_PREAMBLE NEED_ATEXIT ON_EXIT \
+ EXIT_BODY OBJECT_FORMAT_ROSE MULTIBYTE_CHARS MAP_CHARACTER \
+ LIBGCC_NEEDS_DOUBLE
+
+/* Hooks that are no longer used. */
+ #pragma GCC poison LANG_HOOKS_FUNCTION_MARK LANG_HOOKS_FUNCTION_FREE \
+ LANG_HOOKS_MARK_TREE LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES
+
+/* Libiberty macros that are no longer used in GCC. */
+#undef ANSI_PROTOTYPES
+#undef PTR_CONST
+#undef LONG_DOUBLE
+#undef VPARAMS
+#undef VA_OPEN
+#undef VA_FIXEDARG
+#undef VA_CLOSE
+#undef VA_START
+ #pragma GCC poison ANSI_PROTOTYPES PTR_CONST LONG_DOUBLE VPARAMS VA_OPEN \
+ VA_FIXEDARG VA_CLOSE VA_START
+#endif /* IN_GCC */
+
+/* Note: not all uses of the `index' token (e.g. variable names and
+ structure members) have been eliminated. */
+#undef bcopy
+#undef bzero
+#undef bcmp
+#undef rindex
+ #pragma GCC poison bcopy bzero bcmp rindex
+
+#endif /* GCC >= 3.0 */
+
+#endif /* ! GCC_SYSTEM_H */
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