+#$d_stdstdio USE_STDIO_PTR /**/
+#ifdef USE_STDIO_PTR
+#define FILE_ptr(fp) $stdio_ptr
+#$d_stdio_ptr_lval STDIO_PTR_LVALUE /**/
+#define FILE_cnt(fp) $stdio_cnt
+#$d_stdio_cnt_lval STDIO_CNT_LVALUE /**/
+#$d_stdio_ptr_lval_sets_cnt STDIO_PTR_LVAL_SETS_CNT /**/
+#$d_stdio_ptr_lval_nochange_cnt STDIO_PTR_LVAL_NOCHANGE_CNT /**/
+#endif
+
+/* USE_STDIO_BASE:
+ * This symbol is defined if the _base field (or similar) of the
+ * stdio FILE structure can be used to access the stdio buffer for
+ * a file handle. If this is defined, then the FILE_base(fp) macro
+ * will also be defined and should be used to access this field.
+ * Also, the FILE_bufsiz(fp) macro will be defined and should be used
+ * to determine the number of bytes in the buffer. USE_STDIO_BASE
+ * will never be defined unless USE_STDIO_PTR is.
+ */
+/* FILE_base:
+ * This macro is used to access the _base field (or equivalent) of the
+ * FILE structure pointed to by its argument. This macro will always be
+ * defined if USE_STDIO_BASE is defined.
+ */
+/* FILE_bufsiz:
+ * This macro is used to determine the number of bytes in the I/O
+ * buffer pointed to by _base field (or equivalent) of the FILE
+ * structure pointed to its argument. This macro will always be defined
+ * if USE_STDIO_BASE is defined.
+ */
+#$d_stdiobase USE_STDIO_BASE /**/
+#ifdef USE_STDIO_BASE
+#define FILE_base(fp) $stdio_base
+#define FILE_bufsiz(fp) $stdio_bufsiz
+#endif
+
+/* HAS_VPRINTF:
+ * This symbol, if defined, indicates that the vprintf routine is available
+ * to printf with a pointer to an argument list. If unavailable, you
+ * may need to write your own, probably in terms of _doprnt().
+ */
+/* USE_CHAR_VSPRINTF:
+ * This symbol is defined if this system has vsprintf() returning type
+ * (char*). The trend seems to be to declare it as "int vsprintf()". It
+ * is up to the package author to declare vsprintf correctly based on the
+ * symbol.
+ */
+#$d_vprintf HAS_VPRINTF /**/
+#$d_charvspr USE_CHAR_VSPRINTF /**/
+
+/* DOUBLESIZE:
+ * This symbol contains the size of a double, so that the C preprocessor
+ * can make decisions based on it.
+ */
+#define DOUBLESIZE $doublesize /**/
+
+/* I_TIME:
+ * This symbol, if defined, indicates to the C program that it should
+ * include <time.h>.
+ */
+/* I_SYS_TIME:
+ * This symbol, if defined, indicates to the C program that it should
+ * include <sys/time.h>.
+ */
+/* I_SYS_TIME_KERNEL:
+ * This symbol, if defined, indicates to the C program that it should
+ * include <sys/time.h> with KERNEL defined.
+ */
+/* HAS_TM_TM_ZONE:
+ * This symbol, if defined, indicates to the C program that
+ * the struct tm has a tm_zone field.
+ */
+/* HAS_TM_TM_GMTOFF:
+ * This symbol, if defined, indicates to the C program that
+ * the struct tm has a tm_gmtoff field.
+ */
+#$i_time I_TIME /**/
+#$i_systime I_SYS_TIME /**/
+#$i_systimek I_SYS_TIME_KERNEL /**/
+#$d_tm_tm_zone HAS_TM_TM_ZONE /**/
+#$d_tm_tm_gmtoff HAS_TM_TM_GMTOFF /**/
+
+/* VAL_O_NONBLOCK:
+ * This symbol is to be used during open() or fcntl(F_SETFL) to turn on
+ * non-blocking I/O for the file descriptor. Note that there is no way
+ * back, i.e. you cannot turn it blocking again this way. If you wish to
+ * alternatively switch between blocking and non-blocking, use the
+ * ioctl(FIOSNBIO) call instead, but that is not supported by all devices.
+ */
+/* VAL_EAGAIN:
+ * This symbol holds the errno error code set by read() when no data was
+ * present on the non-blocking file descriptor.
+ */
+/* RD_NODATA:
+ * This symbol holds the return code from read() when no data is present
+ * on the non-blocking file descriptor. Be careful! If EOF_NONBLOCK is
+ * not defined, then you can't distinguish between no data and EOF by
+ * issuing a read(). You'll have to find another way to tell for sure!
+ */
+/* EOF_NONBLOCK:
+ * This symbol, if defined, indicates to the C program that a read() on
+ * a non-blocking file descriptor will return 0 on EOF, and not the value
+ * held in RD_NODATA (-1 usually, in that case!).
+ */
+#define VAL_O_NONBLOCK $o_nonblock
+#define VAL_EAGAIN $eagain
+#define RD_NODATA $rd_nodata
+#$d_eofnblk EOF_NONBLOCK
+
+/* PTRSIZE:
+ * This symbol contains the size of a pointer, so that the C preprocessor
+ * can make decisions based on it. It will be sizeof(void *) if
+ * the compiler supports (void *); otherwise it will be
+ * sizeof(char *).
+ */
+#define PTRSIZE $ptrsize /**/
+
+/* Drand01:
+ * This macro is to be used to generate uniformly distributed
+ * random numbers over the range [0., 1.[. You may have to supply
+ * an 'extern double drand48();' in your program since SunOS 4.1.3
+ * doesn't provide you with anything relevant in its headers.
+ * See HAS_DRAND48_PROTO.
+ */
+/* Rand_seed_t:
+ * This symbol defines the type of the argument of the
+ * random seed function.
+ */
+/* seedDrand01:
+ * This symbol defines the macro to be used in seeding the
+ * random number generator (see Drand01).
+ */
+/* RANDBITS:
+ * This symbol indicates how many bits are produced by the
+ * function used to generate normalized random numbers.
+ * Values include 15, 16, 31, and 48.
+ */
+#define Drand01() $drand01 /**/
+#define Rand_seed_t $randseedtype /**/
+#define seedDrand01(x) $seedfunc((Rand_seed_t)x) /**/
+#define RANDBITS $randbits /**/
+
+/* SSize_t:
+ * This symbol holds the type used by functions that return
+ * a count of bytes or an error condition. It must be a signed type.
+ * It is usually ssize_t, but may be long or int, etc.
+ * It may be necessary to include <sys/types.h> or <unistd.h>
+ * to get any typedef'ed information.
+ * We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
+ */
+#define SSize_t $ssizetype /* signed count of bytes */
+
+/* EBCDIC:
+ * This symbol, if defined, indicates that this system uses
+ * EBCDIC encoding.
+ */
+#$ebcdic EBCDIC /**/
+
+/* SETUID_SCRIPTS_ARE_SECURE_NOW:
+ * This symbol, if defined, indicates that the bug that prevents
+ * setuid scripts from being secure is not present in this kernel.
+ */
+/* DOSUID:
+ * This symbol, if defined, indicates that the C program should
+ * check the script that it is executing for setuid/setgid bits, and
+ * attempt to emulate setuid/setgid on systems that have disabled
+ * setuid #! scripts because the kernel can't do it securely.
+ * It is up to the package designer to make sure that this emulation
+ * is done securely. Among other things, it should do an fstat on
+ * the script it just opened to make sure it really is a setuid/setgid
+ * script, it should make sure the arguments passed correspond exactly
+ * to the argument on the #! line, and it should not trust any
+ * subprocesses to which it must pass the filename rather than the
+ * file descriptor of the script to be executed.
+ */
+#$d_suidsafe SETUID_SCRIPTS_ARE_SECURE_NOW /**/
+#$d_dosuid DOSUID /**/
+
+/* PERL_USE_DEVEL:
+ * This symbol, if defined, indicates that Perl was configured with
+ * -Dusedevel, to enable development features. This should not be
+ * done for production builds.
+ */
+#$usedevel PERL_USE_DEVEL /**/
+
+/* HAS_ATOLF:
+ * This symbol, if defined, indicates that the atolf routine is
+ * available to convert strings into long doubles.
+ */
+#$d_atolf HAS_ATOLF /**/
+
+/* HAS_ATOLL:
+ * This symbol, if defined, indicates that the atoll routine is
+ * available to convert strings into long longs.
+ */
+#$d_atoll HAS_ATOLL /**/
+
+/* HAS__FWALK:
+ * This symbol, if defined, indicates that the _fwalk system call is
+ * available to apply a function to all the file handles.
+ */
+#$d__fwalk HAS__FWALK /**/
+
+/* HAS_AINTL:
+ * This symbol, if defined, indicates that the aintl routine is
+ * available. If copysignl is also present we can emulate modfl.
+ */
+#$d_aintl HAS_AINTL /**/
+
+/* HAS_BUILTIN_CHOOSE_EXPR:
+ * Can we handle GCC builtin for compile-time ternary-like expressions
+ */
+/* HAS_BUILTIN_EXPECT:
+ * Can we handle GCC builtin for telling that certain values are more
+ * likely
+ */
+#$d_builtin_expect HAS_BUILTIN_EXPECT /**/
+#$d_builtin_choose_expr HAS_BUILTIN_CHOOSE_EXPR /**/
+
+/* HAS_C99_VARIADIC_MACROS:
+ * If defined, the compiler supports C99 variadic macros.
+ */
+#$d_c99_variadic_macros HAS_C99_VARIADIC_MACROS /**/
+
+/* HAS_CLASS:
+ * This symbol, if defined, indicates that the class routine is
+ * available to classify doubles. Available for example in AIX.
+ * The returned values are defined in <float.h> and are:
+ *
+ * FP_PLUS_NORM Positive normalized, nonzero
+ * FP_MINUS_NORM Negative normalized, nonzero
+ * FP_PLUS_DENORM Positive denormalized, nonzero
+ * FP_MINUS_DENORM Negative denormalized, nonzero
+ * FP_PLUS_ZERO +0.0
+ * FP_MINUS_ZERO -0.0
+ * FP_PLUS_INF +INF
+ * FP_MINUS_INF -INF
+ * FP_NANS Signaling Not a Number (NaNS)
+ * FP_NANQ Quiet Not a Number (NaNQ)
+ */
+#$d_class HAS_CLASS /**/
+
+/* HAS_CLEARENV:
+ * This symbol, if defined, indicates that the clearenv () routine is
+ * available for use.
+ */
+#$d_clearenv HAS_CLEARENV /**/
+
+/* HAS_STRUCT_CMSGHDR:
+ * This symbol, if defined, indicates that the struct cmsghdr
+ * is supported.
+ */
+#$d_cmsghdr_s HAS_STRUCT_CMSGHDR /**/
+
+/* HAS_COPYSIGNL:
+ * This symbol, if defined, indicates that the copysignl routine is
+ * available. If aintl is also present we can emulate modfl.
+ */
+#$d_copysignl HAS_COPYSIGNL /**/
+
+/* USE_CPLUSPLUS:
+ * This symbol, if defined, indicates that a C++ compiler was
+ * used to compiled Perl and will be used to compile extensions.
+ */
+#$d_cplusplus USE_CPLUSPLUS /**/
+
+/* HAS_DBMINIT_PROTO:
+ * This symbol, if defined, indicates that the system provides
+ * a prototype for the dbminit() function. Otherwise, it is up
+ * to the program to supply one. A good guess is
+ * extern int dbminit(char *);
+ */
+#$d_dbminitproto HAS_DBMINIT_PROTO /**/
+
+/* HAS_DIR_DD_FD:
+ * This symbol, if defined, indicates that the the DIR* dirstream
+ * structure contains a member variable named dd_fd.
+ */
+#$d_dir_dd_fd HAS_DIR_DD_FD /**/
+
+/* HAS_DIRFD:
+ * This manifest constant lets the C program know that dirfd
+ * is available.
+ */
+#$d_dirfd HAS_DIRFD /**/
+
+/* DLSYM_NEEDS_UNDERSCORE:
+ * This symbol, if defined, indicates that we need to prepend an
+ * underscore to the symbol name before calling dlsym(). This only
+ * makes sense if you *have* dlsym, which we will presume is the
+ * case if you're using dl_dlopen.xs.
+ */
+#$d_dlsymun DLSYM_NEEDS_UNDERSCORE /**/
+
+/* HAS_FAST_STDIO:
+ * This symbol, if defined, indicates that the "fast stdio"
+ * is available to manipulate the stdio buffers directly.
+ */
+#$d_faststdio HAS_FAST_STDIO /**/
+
+/* HAS_FCHDIR:
+ * This symbol, if defined, indicates that the fchdir routine is
+ * available to change directory using a file descriptor.
+ */
+#$d_fchdir HAS_FCHDIR /**/
+
+/* FCNTL_CAN_LOCK:
+ * This symbol, if defined, indicates that fcntl() can be used
+ * for file locking. Normally on Unix systems this is defined.
+ * It may be undefined on VMS.
+ */
+#$d_fcntl_can_lock FCNTL_CAN_LOCK /**/
+
+/* HAS_FINITE:
+ * This symbol, if defined, indicates that the finite routine is
+ * available to check whether a double is finite (non-infinity non-NaN).
+ */
+#$d_finite HAS_FINITE /**/
+
+/* HAS_FINITEL:
+ * This symbol, if defined, indicates that the finitel routine is
+ * available to check whether a long double is finite
+ * (non-infinity non-NaN).
+ */
+#$d_finitel HAS_FINITEL /**/
+
+/* HAS_FLOCK_PROTO:
+ * This symbol, if defined, indicates that the system provides
+ * a prototype for the flock() function. Otherwise, it is up
+ * to the program to supply one. A good guess is
+ * extern int flock(int, int);
+ */
+#$d_flockproto HAS_FLOCK_PROTO /**/
+
+/* HAS_FP_CLASS:
+ * This symbol, if defined, indicates that the fp_class routine is
+ * available to classify doubles. Available for example in Digital UNIX.
+ * The returned values are defined in <math.h> and are:
+ *
+ * FP_SNAN Signaling NaN (Not-a-Number)
+ * FP_QNAN Quiet NaN (Not-a-Number)
+ * FP_POS_INF +infinity
+ * FP_NEG_INF -infinity
+ * FP_POS_NORM Positive normalized
+ * FP_NEG_NORM Negative normalized
+ * FP_POS_DENORM Positive denormalized
+ * FP_NEG_DENORM Negative denormalized
+ * FP_POS_ZERO +0.0 (positive zero)
+ * FP_NEG_ZERO -0.0 (negative zero)
+ */
+#$d_fp_class HAS_FP_CLASS /**/
+
+/* HAS_FPCLASS:
+ * This symbol, if defined, indicates that the fpclass routine is
+ * available to classify doubles. Available for example in Solaris/SVR4.
+ * The returned values are defined in <ieeefp.h> and are:
+ *
+ * FP_SNAN signaling NaN
+ * FP_QNAN quiet NaN
+ * FP_NINF negative infinity
+ * FP_PINF positive infinity
+ * FP_NDENORM negative denormalized non-zero
+ * FP_PDENORM positive denormalized non-zero
+ * FP_NZERO negative zero
+ * FP_PZERO positive zero
+ * FP_NNORM negative normalized non-zero
+ * FP_PNORM positive normalized non-zero
+ */
+#$d_fpclass HAS_FPCLASS /**/
+
+/* HAS_FPCLASSIFY:
+ * This symbol, if defined, indicates that the fpclassify routine is
+ * available to classify doubles. Available for example in HP-UX.
+ * The returned values are defined in <math.h> and are
+ *
+ * FP_NORMAL Normalized
+ * FP_ZERO Zero
+ * FP_INFINITE Infinity
+ * FP_SUBNORMAL Denormalized
+ * FP_NAN NaN
+ *
+ */
+#$d_fpclassify HAS_FPCLASSIFY /**/
+
+/* HAS_FPCLASSL:
+ * This symbol, if defined, indicates that the fpclassl routine is
+ * available to classify long doubles. Available for example in IRIX.
+ * The returned values are defined in <ieeefp.h> and are:
+ *
+ * FP_SNAN signaling NaN
+ * FP_QNAN quiet NaN
+ * FP_NINF negative infinity
+ * FP_PINF positive infinity
+ * FP_NDENORM negative denormalized non-zero
+ * FP_PDENORM positive denormalized non-zero
+ * FP_NZERO negative zero
+ * FP_PZERO positive zero
+ * FP_NNORM negative normalized non-zero
+ * FP_PNORM positive normalized non-zero
+ */
+#$d_fpclassl HAS_FPCLASSL /**/
+
+/* HAS_FPOS64_T:
+ * This symbol will be defined if the C compiler supports fpos64_t.
+ */
+#$d_fpos64_t HAS_FPOS64_T /**/
+
+/* HAS_FREXPL:
+ * This symbol, if defined, indicates that the frexpl routine is
+ * available to break a long double floating-point number into
+ * a normalized fraction and an integral power of 2.
+ */
+#$d_frexpl HAS_FREXPL /**/
+
+/* HAS_STRUCT_FS_DATA:
+ * This symbol, if defined, indicates that the struct fs_data
+ * to do statfs() is supported.
+ */
+#$d_fs_data_s HAS_STRUCT_FS_DATA /**/
+
+/* HAS_FSEEKO:
+ * This symbol, if defined, indicates that the fseeko routine is
+ * available to fseek beyond 32 bits (useful for ILP32 hosts).
+ */
+#$d_fseeko HAS_FSEEKO /**/
+
+/* HAS_FSTATFS:
+ * This symbol, if defined, indicates that the fstatfs routine is
+ * available to stat filesystems by file descriptors.
+ */
+#$d_fstatfs HAS_FSTATFS /**/
+
+/* HAS_FSYNC:
+ * This symbol, if defined, indicates that the fsync routine is
+ * available to write a file's modified data and attributes to
+ * permanent storage.
+ */
+#$d_fsync HAS_FSYNC /**/
+
+/* HAS_FTELLO:
+ * This symbol, if defined, indicates that the ftello routine is
+ * available to ftell beyond 32 bits (useful for ILP32 hosts).
+ */
+#$d_ftello HAS_FTELLO /**/
+
+/* HAS_FUTIMES:
+ * This symbol, if defined, indicates that the futimes routine is
+ * available to change file descriptor time stamps with struct timevals.
+ */
+#$d_futimes HAS_FUTIMES /**/
+
+/* HAS_GETADDRINFO:
+ * This symbol, if defined, indicates that the getaddrinfo() function
+ * is available for use.
+ */
+#$d_getaddrinfo HAS_GETADDRINFO /**/
+
+/* HAS_GETCWD:
+ * This symbol, if defined, indicates that the getcwd routine is
+ * available to get the current working directory.
+ */
+#$d_getcwd HAS_GETCWD /**/
+
+/* HAS_GETESPWNAM:
+ * This symbol, if defined, indicates that the getespwnam system call is
+ * available to retrieve enchanced (shadow) password entries by name.
+ */
+#$d_getespwnam HAS_GETESPWNAM /**/
+
+/* HAS_GETFSSTAT:
+ * This symbol, if defined, indicates that the getfsstat routine is
+ * available to stat filesystems in bulk.
+ */
+#$d_getfsstat HAS_GETFSSTAT /**/
+
+/* HAS_GETITIMER:
+ * This symbol, if defined, indicates that the getitimer routine is
+ * available to return interval timers.
+ */
+#$d_getitimer HAS_GETITIMER /**/
+
+/* HAS_GETMNT:
+ * This symbol, if defined, indicates that the getmnt routine is
+ * available to get filesystem mount info by filename.
+ */
+#$d_getmnt HAS_GETMNT /**/
+
+/* HAS_GETMNTENT:
+ * This symbol, if defined, indicates that the getmntent routine is
+ * available to iterate through mounted file systems to get their info.
+ */
+#$d_getmntent HAS_GETMNTENT /**/
+
+/* HAS_GETNAMEINFO:
+ * This symbol, if defined, indicates that the getnameinfo() function
+ * is available for use.
+ */
+#$d_getnameinfo HAS_GETNAMEINFO /**/
+
+/* HAS_GETPRPWNAM:
+ * This symbol, if defined, indicates that the getprpwnam system call is
+ * available to retrieve protected (shadow) password entries by name.
+ */
+#$d_getprpwnam HAS_GETPRPWNAM /**/
+
+/* HAS_GETSPNAM:
+ * This symbol, if defined, indicates that the getspnam system call is
+ * available to retrieve SysV shadow password entries by name.
+ */
+#$d_getspnam HAS_GETSPNAM /**/
+
+/* HAS_HASMNTOPT:
+ * This symbol, if defined, indicates that the hasmntopt routine is
+ * available to query the mount options of file systems.
+ */
+#$d_hasmntopt HAS_HASMNTOPT /**/
+
+/* HAS_ILOGBL:
+ * This symbol, if defined, indicates that the ilogbl routine is
+ * available. If scalbnl is also present we can emulate frexpl.
+ */
+#$d_ilogbl HAS_ILOGBL /**/
+
+/* HAS_INETNTOP:
+ * This symbol, if defined, indicates that the inet_ntop() function
+ * is available to parse IPv4 and IPv6 strings.
+ */
+#$d_inetntop HAS_INETNTOP /**/
+
+/* HAS_INETPTON:
+ * This symbol, if defined, indicates that the inet_pton() function
+ * is available to parse IPv4 and IPv6 strings.
+ */
+#$d_inetpton HAS_INETPTON /**/
+
+/* HAS_INT64_T:
+ * This symbol will defined if the C compiler supports int64_t.
+ * Usually the <inttypes.h> needs to be included, but sometimes
+ * <sys/types.h> is enough.
+ */
+#$d_int64_t HAS_INT64_T /**/
+
+/* HAS_ISFINITE:
+ * This symbol, if defined, indicates that the isfinite routine is
+ * available to check whether a double is finite (non-infinity non-NaN).
+ */
+#$d_isfinite HAS_ISFINITE /**/
+
+/* HAS_ISINF:
+ * This symbol, if defined, indicates that the isinf routine is
+ * available to check whether a double is an infinity.
+ */
+#$d_isinf HAS_ISINF /**/
+
+/* HAS_ISNAN:
+ * This symbol, if defined, indicates that the isnan routine is
+ * available to check whether a double is a NaN.
+ */
+#$d_isnan HAS_ISNAN /**/
+
+/* HAS_ISNANL:
+ * This symbol, if defined, indicates that the isnanl routine is
+ * available to check whether a long double is a NaN.
+ */
+#$d_isnanl HAS_ISNANL /**/
+
+/* HAS_LDBL_DIG:
+ * This symbol, if defined, indicates that this system's <float.h>
+ * or <limits.h> defines the symbol LDBL_DIG, which is the number
+ * of significant digits in a long double precision number. Unlike
+ * for DBL_DIG, there's no good guess for LDBL_DIG if it is undefined.
+ */
+#$d_ldbl_dig HAS_LDBL_DIG /* */
+
+/* LIBM_LIB_VERSION:
+ * This symbol, if defined, indicates that libm exports _LIB_VERSION
+ * and that math.h defines the enum to manipulate it.
+ */
+#$d_libm_lib_version LIBM_LIB_VERSION /**/
+
+/* HAS_MADVISE:
+ * This symbol, if defined, indicates that the madvise system call is
+ * available to map a file into memory.
+ */
+#$d_madvise HAS_MADVISE /**/
+
+/* HAS_MALLOC_SIZE:
+ * This symbol, if defined, indicates that the malloc_size
+ * routine is available for use.
+ */
+#$d_malloc_size HAS_MALLOC_SIZE /**/
+
+/* HAS_MALLOC_GOOD_SIZE:
+ * This symbol, if defined, indicates that the malloc_good_size
+ * routine is available for use.
+ */
+#$d_malloc_good_size HAS_MALLOC_GOOD_SIZE /**/
+
+/* HAS_MKDTEMP:
+ * This symbol, if defined, indicates that the mkdtemp routine is
+ * available to exclusively create a uniquely named temporary directory.
+ */
+#$d_mkdtemp HAS_MKDTEMP /**/
+
+/* HAS_MKSTEMPS:
+ * This symbol, if defined, indicates that the mkstemps routine is
+ * available to excluslvely create and open a uniquely named
+ * (with a suffix) temporary file.
+ */
+#$d_mkstemps HAS_MKSTEMPS /**/
+
+/* HAS_MODFL:
+ * This symbol, if defined, indicates that the modfl routine is
+ * available to split a long double x into a fractional part f and
+ * an integer part i such that |f| < 1.0 and (f + i) = x.
+ */
+/* HAS_MODFL_PROTO:
+ * This symbol, if defined, indicates that the system provides
+ * a prototype for the modfl() function. Otherwise, it is up
+ * to the program to supply one.
+ */
+/* HAS_MODFL_POW32_BUG:
+ * This symbol, if defined, indicates that the modfl routine is
+ * broken for long doubles >= pow(2, 32).
+ * For example from 4294967303.150000 one would get 4294967302.000000
+ * and 1.150000. The bug has been seen in certain versions of glibc,
+ * release 2.2.2 is known to be okay.
+ */
+#$d_modfl HAS_MODFL /**/
+#$d_modflproto HAS_MODFL_PROTO /**/
+#$d_modfl_pow32_bug HAS_MODFL_POW32_BUG /**/
+
+/* HAS_MPROTECT:
+ * This symbol, if defined, indicates that the mprotect system call is
+ * available to modify the access protection of a memory mapped file.
+ */
+#$d_mprotect HAS_MPROTECT /**/
+
+/* HAS_STRUCT_MSGHDR:
+ * This symbol, if defined, indicates that the struct msghdr
+ * is supported.
+ */
+#$d_msghdr_s HAS_STRUCT_MSGHDR /**/
+
+/* HAS_NL_LANGINFO:
+ * This symbol, if defined, indicates that the nl_langinfo routine is
+ * available to return local data. You will also need <langinfo.h>
+ * and therefore I_LANGINFO.
+ */
+#$d_nl_langinfo HAS_NL_LANGINFO /**/
+
+/* HAS_OFF64_T:
+ * This symbol will be defined if the C compiler supports off64_t.
+ */
+#$d_off64_t HAS_OFF64_T /**/
+
+/* HAS_PROCSELFEXE:
+ * This symbol is defined if PROCSELFEXE_PATH is a symlink
+ * to the absolute pathname of the executing program.
+ */
+/* PROCSELFEXE_PATH:
+ * If HAS_PROCSELFEXE is defined this symbol is the filename
+ * of the symbolic link pointing to the absolute pathname of
+ * the executing program.
+ */
+#$d_procselfexe HAS_PROCSELFEXE /**/
+#if defined(HAS_PROCSELFEXE) && !defined(PROCSELFEXE_PATH)
+#define PROCSELFEXE_PATH $procselfexe /**/
+#endif
+
+/* HAS_PTHREAD_ATTR_SETSCOPE:
+ * This symbol, if defined, indicates that the pthread_attr_setscope
+ * system call is available to set the contention scope attribute of
+ * a thread attribute object.
+ */
+#$d_pthread_attr_setscope HAS_PTHREAD_ATTR_SETSCOPE /**/
+
+/* HAS_READV:
+ * This symbol, if defined, indicates that the readv routine is
+ * available to do gather reads. You will also need <sys/uio.h>
+ * and there I_SYSUIO.
+ */
+#$d_readv HAS_READV /**/
+
+/* HAS_RECVMSG:
+ * This symbol, if defined, indicates that the recvmsg routine is
+ * available to send structured socket messages.
+ */
+#$d_recvmsg HAS_RECVMSG /**/
+
+/* HAS_SBRK_PROTO:
+ * This symbol, if defined, indicates that the system provides
+ * a prototype for the sbrk() function. Otherwise, it is up
+ * to the program to supply one. Good guesses are
+ * extern void* sbrk(int);
+ * extern void* sbrk(size_t);
+ */
+#$d_sbrkproto HAS_SBRK_PROTO /**/
+
+/* HAS_SCALBNL:
+ * This symbol, if defined, indicates that the scalbnl routine is
+ * available. If ilogbl is also present we can emulate frexpl.
+ */
+#$d_scalbnl HAS_SCALBNL /**/
+
+/* HAS_SENDMSG:
+ * This symbol, if defined, indicates that the sendmsg routine is
+ * available to send structured socket messages.
+ */
+#$d_sendmsg HAS_SENDMSG /**/
+
+/* HAS_SETITIMER:
+ * This symbol, if defined, indicates that the setitimer routine is
+ * available to set interval timers.
+ */
+#$d_setitimer HAS_SETITIMER /**/
+
+/* HAS_SETPROCTITLE:
+ * This symbol, if defined, indicates that the setproctitle routine is
+ * available to set process title.
+ */
+#$d_setproctitle HAS_SETPROCTITLE /**/
+
+/* USE_SFIO:
+ * This symbol, if defined, indicates that sfio should
+ * be used.
+ */
+#$d_sfio USE_SFIO /**/
+
+/* HAS_SIGNBIT:
+ * This symbol, if defined, indicates that the signbit routine is
+ * available to check if the given number has the sign bit set.
+ * This should include correct testing of -0.0. This will only be set
+ * if the signbit() routine is safe to use with the NV type used internally
+ * in perl. Users should call Perl_signbit(), which will be #defined to
+ * the system's signbit() function or macro if this symbol is defined.
+ */
+#$d_signbit HAS_SIGNBIT /**/
+
+/* HAS_SIGPROCMASK:
+ * This symbol, if defined, indicates that the sigprocmask
+ * system call is available to examine or change the signal mask
+ * of the calling process.
+ */
+#$d_sigprocmask HAS_SIGPROCMASK /**/
+
+/* USE_SITECUSTOMIZE:
+ * This symbol, if defined, indicates that sitecustomize should
+ * be used.
+ */
+#ifndef USE_SITECUSTOMIZE
+#$usesitecustomize USE_SITECUSTOMIZE /**/
+#endif
+
+/* HAS_SNPRINTF:
+ * This symbol, if defined, indicates that the snprintf () library
+ * function is available for use.
+ */
+/* HAS_VSNPRINTF:
+ * This symbol, if defined, indicates that the vsnprintf () library
+ * function is available for use.
+ */
+#$d_snprintf HAS_SNPRINTF /**/
+#$d_vsnprintf HAS_VSNPRINTF /**/
+
+/* HAS_SOCKATMARK:
+ * This symbol, if defined, indicates that the sockatmark routine is
+ * available to test whether a socket is at the out-of-band mark.
+ */
+#$d_sockatmark HAS_SOCKATMARK /**/
+
+/* HAS_SOCKATMARK_PROTO:
+ * This symbol, if defined, indicates that the system provides
+ * a prototype for the sockatmark() function. Otherwise, it is up
+ * to the program to supply one. A good guess is
+ * extern int sockatmark(int);
+ */
+#$d_sockatmarkproto HAS_SOCKATMARK_PROTO /**/
+
+/* HAS_SOCKS5_INIT:
+ * This symbol, if defined, indicates that the socks5_init routine is
+ * available to initialize SOCKS 5.
+ */
+#$d_socks5_init HAS_SOCKS5_INIT /**/
+
+/* SPRINTF_RETURNS_STRLEN:
+ * This variable defines whether sprintf returns the length of the string
+ * (as per the ANSI spec). Some C libraries retain compatibility with
+ * pre-ANSI C and return a pointer to the passed in buffer; for these
+ * this variable will be undef.
+ */
+#$d_sprintf_returns_strlen SPRINTF_RETURNS_STRLEN /**/
+
+/* HAS_SQRTL:
+ * This symbol, if defined, indicates that the sqrtl routine is
+ * available to do long double square roots.
+ */
+#$d_sqrtl HAS_SQRTL /**/
+
+/* HAS_SETRESGID_PROTO:
+ * This symbol, if defined, indicates that the system provides
+ * a prototype for the setresgid() function. Otherwise, it is up
+ * to the program to supply one. Good guesses are
+ * extern int setresgid(uid_t ruid, uid_t euid, uid_t suid);
+ */
+#$d_sresgproto HAS_SETRESGID_PROTO /**/