double-- or a long double when applicable. Usual values are
2, 4 and 8. The default is eight, for safety.
-ansi2knr (ansi2knr.U):
- This variable is set if the user needs to run ansi2knr.
- Currently, this is not supported, so we just abort.
-
aphostname (d_gethname.U):
This variable contains the command which can be used to compute the
host name. The command is fully qualified by its absolute path, to make
This variable conditionally defines HAS__FWALK if _fwalk() is
available to apply a function to all the file handles.
+d_accept4 (d_accept4.U):
+ This variable conditionally defines HAS_ACCEPT4 if accept4() is
+ available to accept socket connections.
+
d_access (d_access.U):
This variable conditionally defines HAS_ACCESS if the access() system
call is available to check for access permissions using real IDs.
indicates to the C program that the backtrace() routine is available
to get a stack trace.
-d_bcmp (d_bcmp.U):
- This variable conditionally defines the HAS_BCMP symbol if
- the bcmp() routine is available to compare strings.
-
-d_bcopy (d_bcopy.U):
- This variable conditionally defines the HAS_BCOPY symbol if
- the bcopy() routine is available to copy strings.
-
d_bsd (Guess.U):
This symbol conditionally defines the symbol BSD when running on a
BSD system.
setpgrp needs two arguments whereas USG one needs none.
See also d_setpgid for a POSIX interface.
+d_builtin_add_overflow (d_builtin_overflow.U):
+ This variable conditionally defines HAS_BUILTIN_ADD_OVERFLOW, which
+ indicates that the compiler supports __builtin_add_overflow(x,y,&z)
+ for safely adding x and y into z while checking for overflow.
+
d_builtin_choose_expr (d_builtin.U):
This conditionally defines HAS_BUILTIN_CHOOSE_EXPR, which
indicates that the compiler supports __builtin_choose_expr(x,y,z).
__builtin_expect to provide the compiler with branch prediction
information.
-d_bzero (d_bzero.U):
- This variable conditionally defines the HAS_BZERO symbol if
- the bzero() routine is available to set memory to 0.
+d_builtin_mul_overflow (d_builtin_overflow.U):
+ This variable conditionally defines HAS_BUILTIN_MUL_OVERFLOW, which
+ indicates that the compiler supports __builtin_mul_overflow(x,y,&z)
+ for safely multiplying x and y into z while checking for overflow.
+
+d_builtin_sub_overflow (d_builtin_overflow.U):
+ This variable conditionally defines HAS_BUILTIN_SUB_OVERFLOW, which
+ indicates that the compiler supports __builtin_sub_overflow(x,y,&z)
+ for safely subtracting y from x into z while checking for overflow.
d_c99_variadic_macros (d_c99_variadic.U):
This variable conditionally defines the HAS_C99_VARIADIC_MACROS
indicates to the C program that the cbrt() (cube root) function
is available.
-d_charvspr (d_vprintf.U):
- This variable conditionally defines CHARVSPRINTF if this system
- has vsprintf returning type (char*). The trend seems to be to
- declare it as "int vsprintf()".
-
d_chown (d_chown.U):
This variable conditionally defines the HAS_CHOWN symbol, which
indicates to the C program that the chown() routine is available.
This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
which indicates that the struct cmsghdr is supported.
-d_const (d_const.U):
- This variable conditionally defines the HASCONST symbol, which
- indicates to the C program that this C compiler knows about the
- const type.
-
d_copysign (d_copysign.U):
This variable conditionally defines the HAS_COPYSIGN symbol, which
indicates to the C program that the copysign() routine is available.
indicates to the C program that the cuserid() routine is available
to get character login names.
-d_dbl_dig (d_dbl_dig.U):
- This variable conditionally defines d_dbl_dig if this system's
- header files provide DBL_DIG, which is the number of significant
- digits in a double precision number.
-
d_dbminitproto (d_dbminitproto.U):
This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
which indicates to the C program that the system provides
tells the C program that it should insert setuid emulation code
on hosts which have setuid #! scripts disabled.
+d_double_has_inf (longdblfio.U):
+ This variable conditionally defines the symbol DOUBLE_HAS_INF
+ which indicates that the double type has an infinity.
+
+d_double_has_nan (longdblfio.U):
+ This variable conditionally defines the symbol DOUBLE_HAS_NAN
+ which indicates that the double type has a not-a-number.
+
+d_double_has_negative_zero (longdblfio.U):
+ This variable conditionally defines the symbol DOUBLE_HAS_NEGATIVE_ZERO
+ which indicates that the double type has a negative zero.
+
+d_double_has_subnormals (longdblfio.U):
+ This variable conditionally defines the symbol DOUBLE_HAS_SUBNORMALS
+ which indicates that the double type has subnormals (denormals).
+
+d_double_style_cray (longdblfio.U):
+ This variable conditionally defines the symbol DOUBLE_STYLE_CRAY
+ which indicates that the double is the 64-bit CRAY mainframe format.
+
+d_double_style_ibm (longdblfio.U):
+ This variable conditionally defines the symbol DOUBLE_STYLE_IBM,
+ which indicates that the double is the 64-bit IBM mainframe format.
+
+d_double_style_ieee (longdblfio.U):
+ This variable conditionally defines the symbol DOUBLE_STYLE_IEEE,
+ which indicates that the double is the 64-bit IEEE 754.
+
+d_double_style_vax (longdblfio.U):
+ This variable conditionally defines the symbol DOUBLE_STYLE_VAX,
+ which indicates that the double is the 64-bit VAX format D or G.
+
d_drand48_r (d_drand48_r.U):
This variable conditionally defines the HAS_DRAND48_R symbol,
which indicates to the C program that the drand48_r()
This variable conditionally defines HAS_DUP2 if dup2() is
available to duplicate file descriptors.
+d_dup3 (d_dup3.U):
+ This variable conditionally defines HAS_DUP3 if dup3() is
+ available to duplicate file descriptors.
+
+d_duplocale (d_newlocale.U):
+ This variable conditionally defines the HAS_DUPLOCALE symbol, which
+ indicates to the C program that the duplocale() routine is available
+ to duplicate a locale object.
+
d_eaccess (d_eaccess.U):
This variable conditionally defines the HAS_EACCESS symbol, which
indicates to the C program that the eaccess() routine is available.
indicates to the C program that the fchmod() routine is available
to change mode of opened files.
+d_fchmodat (d_fsat.U):
+ This variable conditionally defines the HAS_FCHMODAT symbol, which
+ indicates the POSIX fchmodat() function is available.
+
d_fchown (d_fchown.U):
This variable conditionally defines the HAS_FCHOWN symbol, which
indicates to the C program that the fchown() routine is available
This variable contains the eventual value of the HAS_FD_SET symbol,
which indicates if your C compiler knows about the fd_set typedef.
+d_fdclose (d_fdclose.U):
+ This variable conditionally defines the HAS_FDCLOSE symbol, which
+ indicates to the C program that the fdclose() routine is available.
+
d_fdim (d_fdim.U):
This variable conditionally defines the HAS_FDIM symbol, which
indicates to the C program that the fdim() routine is available.
d_fpos64_t (d_fpos64_t.U):
This symbol will be defined if the C compiler supports fpos64_t.
+d_freelocale (d_newlocale.U):
+ This variable conditionally defines the HAS_FREELOCALE symbol, which
+ indicates to the C program that the freelocale() routine is available
+ to deallocates the resources associated with a locale object.
+
d_frexpl (d_frexpl.U):
This variable conditionally defines the HAS_FREXPL symbol, which
indicates to the C program that the frexpl() routine is available.
This variable conditionally defines the HAS_FUTIMES symbol, which
indicates to the C program that the futimes() routine is available.
+d_gai_strerror (d_gai_strerror.U):
+ This variable conditionally defines the HAS_GAI_STRERROR symbol
+ if the gai_strerror() routine is available and can be used to
+ translate error codes returned by getaddrinfo() into human
+ readable strings.
+
d_Gconvert (d_gconvert.U):
This variable holds what Gconvert is defined as to convert
floating point numbers into strings. By default, Configure
This variable conditionally defines PERL_INC_VERSION_LIST.
It is set to undef when PERL_INC_VERSION_LIST is empty.
-d_index (d_strchr.U):
- This variable conditionally defines HAS_INDEX if index() and
- rindex() are available for string searching.
-
d_inetaton (d_inetaton.U):
This variable conditionally defines the HAS_INET_ATON symbol, which
indicates to the C program that the inet_aton() function is available
This variable conditionally defines the HAS_ISINFL symbol, which
indicates to the C program that the isinfl() routine is available.
+d_isless (d_isless.U):
+ This variable conditionally defines the HAS_ISLESS symbol, which
+ indicates to the C program that the isless() routine is available.
+
d_isnan (d_isnan.U):
This variable conditionally defines the HAS_ISNAN symbol, which
indicates to the C program that the isnan() routine is available.
This variable conditionally defines HAS_LINK if link() is
available to create hard links.
+d_linkat (d_fsat.U):
+ This variable conditionally defines the HAS_LINKAT symbol, which
+ indicates the POSIX linkat() function is available.
+
d_llrint (d_llrint.U):
This variable conditionally defines the HAS_LLRINT symbol, which
indicates to the C program that the llrint() routine is available
- to return the long long value closest to (according to the current
- rounding mode) to x.
+ to return the long long value closest to a double (according
+ to the current rounding mode).
d_llrintl (d_llrintl.U):
This variable conditionally defines the HAS_LLRINTL symbol, which
indicates to the C program that the llrintl() routine is available
- to return the long long value closest to (according to the current
- rounding mode) to long double x.
+ to return the long long value closest to a long double (according
+ to the current rounding mode).
d_llround (d_llround.U):
This variable conditionally defines the HAS_LLROUND symbol, which
d_llroundl (d_llroundl.U):
This variable conditionally defines the HAS_LLROUNDL symbol, which
indicates to the C program that the llroundl() routine is available
- to return the long long value nearest to long double x.
+ to return the long long value nearest to x away from zero.
+
+d_localeconv_l (d_localeconv_l.U):
+ This variable conditionally defines the HAS_LOCALECONV_L symbol, which
+ indicates to the C program that the localeconv_l() routine is available.
d_localtime64 (d_timefuncs64.U):
This variable conditionally defines the HAS_LOCALTIME64 symbol, which
indicates to the C program that the logb() routine is available
to extract the exponent of x.
+d_long_double_style_ieee (d_longdbl.U):
+ This variable conditionally defines LONG_DOUBLE_STYLE_IEEE
+ if the long double is any of the IEEE 754 style long doubles:
+ LONG_DOUBLE_STYLE_IEEE_STD, LONG_DOUBLE_STYLE_IEEE_EXTENDED,
+ LONG_DOUBLE_STYLE_IEEE_DOUBLEDOUBLE.
+
+d_long_double_style_ieee_doubledouble (d_longdbl.U):
+ This variable conditionally defines LONG_DOUBLE_STYLE_IEEE_DOUBLEDOUBLE
+ if the long double is the 128-bit IEEE 754 double-double.
+
+d_long_double_style_ieee_extended (d_longdbl.U):
+ This variable conditionally defines LONG_DOUBLE_STYLE_IEEE_EXTENDED
+ if the long double is the 80-bit IEEE 754 extended precision.
+ Note that despite the 'extended' this is less than the 'std',
+ since thisis an extension of the double precision.
+
+d_long_double_style_ieee_std (d_longdbl.U):
+ This variable conditionally defines LONG_DOUBLE_STYLE_IEEE_STD
+ if the long double is the 128-bit IEEE 754.
+
+d_long_double_style_vax (d_longdbl.U):
+ This variable conditionally defines LONG_DOUBLE_STYLE_VAX
+ if the long double is the 128-bit VAX format H.
+
d_longdbl (d_longdbl.U):
This variable conditionally defines HAS_LONG_DOUBLE if
the long double type is supported.
d_lrint (d_lrint.U):
This variable conditionally defines the HAS_LRINT symbol, which
indicates to the C program that the lrint() routine is available
- to return the integral value closest to (according to the current
- rounding mode) to x.
+ to return the integral value closest to a double (according
+ to the current rounding mode).
d_lrintl (d_lrintl.U):
This variable conditionally defines the HAS_LRINTL symbol, which
indicates to the C program that the lrintl() routine is available
- to return the integral value closest to (according to the current
- rounding mode) to long double x.
+ to return the integral value closest to a long double (according
+ to the current rounding mode).
d_lround (d_lround.U):
This variable conditionally defines the HAS_LROUND symbol, which
d_lroundl (d_lroundl.U):
This variable conditionally defines the HAS_LROUNDL symbol, which
indicates to the C program that the lroundl() routine is available
- to return the integral value nearest to x of the long double argument.
+ to return the integral value nearest to x away from zero.
d_lseekproto (d_lseekproto.U):
This variable conditionally defines the HAS_LSEEK_PROTO symbol,
indicates to the C program that the mblen() routine is available
to find the number of bytes in a multibye character.
+d_mbrlen (d_mbrlen.U):
+ This variable conditionally defines the HAS_MBRLEN symbol if the
+ mbrlen() routine is available to be used to get the length of
+ multi-byte character strings.
+
+d_mbrtowc (d_mbrtowc.U):
+ This variable conditionally defines the HAS_MBRTOWC symbol if the
+ mbrtowc() routine is available to be used to convert a multi-byte
+ character into a wide character.
+
d_mbstowcs (d_mbstowcs.U):
This variable conditionally defines the HAS_MBSTOWCS symbol, which
indicates to the C program that the mbstowcs() routine is available
indicates to the C program that the mbtowc() routine is available
to convert multibyte to a wide character.
-d_memchr (d_memchr.U):
- This variable conditionally defines the HAS_MEMCHR symbol, which
- indicates to the C program that the memchr() routine is available
- to locate characters within a C string.
-
-d_memcmp (d_memcmp.U):
- This variable conditionally defines the HAS_MEMCMP symbol, which
- indicates to the C program that the memcmp() routine is available
- to compare blocks of memory.
-
-d_memcpy (d_memcpy.U):
- This variable conditionally defines the HAS_MEMCPY symbol, which
- indicates to the C program that the memcpy() routine is available
- to copy blocks of memory.
-
-d_memmove (d_memmove.U):
- This variable conditionally defines the HAS_MEMMOVE symbol, which
- indicates to the C program that the memmove() routine is available
- to copy potentially overlapping blocks of memory.
+d_memmem (d_memmem.U):
+ This variable conditionally defines the HAS_MEMMEM symbol, which
+ indicates to the C program that the memmem() routine is available
+ to return a pointer to the start of the first occurance of a
+ substring in a memory area (or NULL if not found).
-d_memset (d_memset.U):
- This variable conditionally defines the HAS_MEMSET symbol, which
- indicates to the C program that the memset() routine is available
- to set blocks of memory.
+d_memrchr (d_memrchr.U):
+ This variable conditionally defines the HAS_MEMRCHR symbol, which
+ indicates to the C program that the memrchr() routine is available
+ to return a pointer to the last occurrence of a byte in a memory
+ area (or NULL if not found).
d_mkdir (d_mkdir.U):
This variable conditionally defines the HAS_MKDIR symbol, which
This variable conditionally defines the HAS_MKFIFO symbol, which
indicates to the C program that the mkfifo() routine is available.
+d_mkostemp (d_mkostemp.U):
+ This variable conditionally defines HAS_MKOSTEMP if mkostemp() is
+ available to exclusively create and open a uniquely named (with a
+ suffix) temporary file.
+
d_mkstemp (d_mkstemp.U):
This variable conditionally defines the HAS_MKSTEMP symbol, which
indicates to the C program that the mkstemp() routine is available
This variable conditionally defines the HAS_MSG symbol, which
indicates that the entire msg*(2) library is present.
+d_msg_ctrunc (d_socket.U):
+ This variable conditionally defines the HAS_MSG_CTRUNC symbol,
+ which indicates that the MSG_CTRUNC is available. #ifdef is
+ not enough because it may be an enum, glibc has been known to do this.
+
+d_msg_dontroute (d_socket.U):
+ This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
+ which indicates that the MSG_DONTROUTE is available. #ifdef is
+ not enough because it may be an enum, glibc has been known to do this.
+
+d_msg_oob (d_socket.U):
+ This variable conditionally defines the HAS_MSG_OOB symbol,
+ which indicates that the MSG_OOB is available. #ifdef is
+ not enough because it may be an enum, glibc has been known to do this.
+
+d_msg_peek (d_socket.U):
+ This variable conditionally defines the HAS_MSG_PEEK symbol,
+ which indicates that the MSG_PEEK is available. #ifdef is
+ not enough because it may be an enum, glibc has been known to do this.
+
+d_msg_proxy (d_socket.U):
+ This variable conditionally defines the HAS_MSG_PROXY symbol,
+ which indicates that the MSG_PROXY is available. #ifdef is
+ not enough because it may be an enum, glibc has been known to do this.
+
d_msgctl (d_msgctl.U):
This variable conditionally defines the HAS_MSGCTL symbol, which
indicates to the C program that the msgctl() routine is available.
This variable conditionally defines HAS_NAN if nan() is
available to generate NaN.
+d_nanosleep (d_nanosleep.U):
+ This variable conditionally defines HAS_NANOSLEEP
+ if nanosleep() is available to sleep with 1E-9 sec accuracy.
+
d_ndbm (i_ndbm.U):
This variable conditionally defines the HAS_NDBM symbol, which
indicates that both the ndbm.h include file and an appropriate ndbm
is available to return the integral value closest to (according to
the current rounding mode) to x.
+d_newlocale (d_newlocale.U):
+ This variable conditionally defines the HAS_NEWLOCALE symbol, which
+ indicates to the C program that the newlocale() routine is available
+ to return a new locale object or modify an existing locale object.
+
d_nextafter (d_nextafter.U):
This variable conditionally defines HAS_NEXTAFTER if nextafter()
is available to return the next machine representable double from
which indicates to the C program that the 3 argument version of
the open(2) function is available.
+d_openat (d_fsat.U):
+ This variable conditionally defines the HAS_OPENAT symbol, which
+ indicates the POSIX openat() function is available.
+
d_pathconf (d_pathconf.U):
This variable conditionally defines the HAS_PATHCONF symbol, which
indicates to the C program that the pathconf() routine is available
indicates to the C program that the pipe() routine is available
to create an inter-process channel.
+d_pipe2 (d_pipe2.U):
+ This variable conditionally defines the HAS_PIPE2 symbol, which
+ indicates to the C program that the pipe2() routine is available
+ to create an inter-process channel.
+
d_poll (d_poll.U):
This variable conditionally defines the HAS_POLL symbol, which
indicates to the C program that the poll() routine is available
This variable, if defined, tells that there's a 64-bit integer type,
quadtype.
+d_querylocale (d_newlocale.U):
+ This variable conditionally defines the HAS_QUERYLOCALE symbol, which
+ indicates to the C program that the querylocale() routine is available
+ to return the name of the locale for a category mask.
+
d_random_r (d_random_r.U):
This variable conditionally defines the HAS_RANDOM_R symbol,
which indicates to the C program that the random_r()
indicates to the C program that the rename() routine is available
to rename files.
+d_renameat (d_fsat.U):
+ This variable conditionally defines the HAS_RENAMEAT symbol, which
+ indicates the POSIX renameat() function is available.
+
d_rewinddir (d_readdir.U):
This variable conditionally defines HAS_REWINDDIR if rewinddir() is
available.
This variable conditionally defines the HAS_ROUND symbol, which
indicates to the C program that the round() routine is available.
-d_safebcpy (d_safebcpy.U):
- This variable conditionally defines the HAS_SAFE_BCOPY symbol if
- the bcopy() routine can do overlapping copies. Normally, you
- should probably use memmove().
-
-d_safemcpy (d_safemcpy.U):
- This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
- the memcpy() routine can do overlapping copies.
- For overlapping copies, memmove() should be used, if available.
-
-d_sanemcmp (d_sanemcmp.U):
- This variable conditionally defines the HAS_SANE_MEMCMP symbol if
- the memcpy() routine is available and can be used to compare relative
- magnitudes of chars with their high bits set.
-
d_sbrkproto (d_sbrkproto.U):
This variable conditionally defines the HAS_SBRK_PROTO symbol,
which indicates to the C program that the system provides
symbol if the sched_yield routine is available to yield
the execution of the current thread.
+d_scm_rights (d_socket.U):
+ This variable conditionally defines the HAS_SCM_RIGHTS symbol,
+ which indicates that the SCM_RIGHTS is available. #ifdef is
+ not enough because it may be an enum, glibc has been known to do this.
+
d_SCNfldbl (longdblfio.U):
This variable conditionally defines the PERL_PRIfldbl symbol, which
indicates that stdio has a symbol to scan long doubles.
This variable conditionally defines the HAS_SIGACTION symbol, which
indicates that the Vr4 sigaction() routine is available.
+d_siginfo_si_addr (d_siginfo_si.U):
+ This variable conditionally defines the HAS_SIGINFO_SI_ADDR symbol,
+ which indicates that the siginfo_t struct has the si_addr member.
+
+d_siginfo_si_band (d_siginfo_si.U):
+ This variable conditionally defines the HAS_SIGINFO_SI_BAND symbol,
+ which indicates that the siginfo_t struct has the si_band member.
+
+d_siginfo_si_errno (d_siginfo_si.U):
+ This variable conditionally defines the HAS_SIGINFO_SI_ERRNO symbol,
+ which indicates that the siginfo_t struct has the si_errno member.
+
+d_siginfo_si_fd (d_siginfo_si.U):
+ This variable conditionally defines the HAS_SIGINFO_SI_FD symbol,
+ which indicates that the siginfo_t struct has the si_fd member.
+
+d_siginfo_si_pid (d_siginfo_si.U):
+ This variable conditionally defines the HAS_SIGINFO_SI_PID symbol,
+ which indicates that the siginfo_t struct has the si_pid member.
+
+d_siginfo_si_status (d_siginfo_si.U):
+ This variable conditionally defines the HAS_SIGINFO_SI_STATUS symbol,
+ which indicates that the siginfo_t struct has the si_status member.
+
+d_siginfo_si_uid (d_siginfo_si.U):
+ This variable conditionally defines the HAS_SIGINFO_SI_UID symbol,
+ which indicates that the siginfo_t struct has the si_uid member.
+
+d_siginfo_si_value (d_siginfo_si.U):
+ This variable conditionally defines the HAS_SIGINFO_SI_VALUE symbol,
+ which indicates that the siginfo_t struct has the si_value member.
+
d_signbit (d_signbit.U):
This variable conditionally defines the HAS_SIGNBIT symbol, which
indicates to the C program that the signbit() routine is available
This variable conditionally defines the HAS_SOCKS5_INIT symbol, which
indicates to the C program that the socks5_init() routine is available.
-d_sprintf_returns_strlen (d_sprintf_len.U):
- 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_sqrtl (d_sqrtl.U):
This variable conditionally defines the HAS_SQRTL symbol, which
indicates to the C program that the sqrtl() routine is available.
has a FILE structure declaring usable _ptr and _cnt fields (or
equivalent) in stdio.h.
-d_strchr (d_strchr.U):
- This variable conditionally defines HAS_STRCHR if strchr() and
- strrchr() are available for string searching.
-
d_strcoll (d_strcoll.U):
This variable conditionally defines HAS_STRCOLL if strcoll() is
available to compare strings using collating information.
-d_strctcpy (d_strctcpy.U):
- This variable conditionally defines the USE_STRUCT_COPY symbol, which
- indicates to the C program that this C compiler knows how to copy
- structures.
-
-d_strerrm (d_strerror.U):
- This variable holds what Strerror is defined as to translate an error
- code condition into an error message string. It could be 'strerror'
- or a more complex macro emulating strerror with sys_errlist[], or the
- "unknown" string when both strerror and sys_errlist are missing.
-
-d_strerror (d_strerror.U):
- This variable conditionally defines HAS_STRERROR if strerror() is
- available to translate error numbers to strings.
+d_strerror_l (d_strerror_l.U):
+ This variable conditionally defines the HAS_STRERROR_L symbol, which
+ indicates to the C program that the strerror_l() routine is available
+ to return the error message for a given errno value in a particular
+ locale (identified by a locale_t object).
d_strerror_r (d_strerror_r.U):
This variable conditionally defines the HAS_STRERROR_R symbol,
This variable conditionally defines the HAS_STRLCPY symbol, which
indicates to the C program that the strlcpy () routine is available.
+d_strnlen (d_strnlen.U):
+ This variable conditionally defines the HAS_STRNLEN symbol, which
+ indicates to the C program that the strnlen () routine is available.
+
d_strtod (d_strtod.U):
This variable conditionally defines the HAS_STRTOD symbol, which
indicates to the C program that the strtod() routine is available
This variable conditionally defines the HAS_STRTOLD symbol, which
indicates to the C program that the strtold() routine is available.
+d_strtold_l (d_strtold_l.U):
+ This variable conditionally defines the HAS_STRTOLD_L symbol, which
+ indicates to the C program that the strtold_l() routine is available.
+
d_strtoll (d_strtoll.U):
This variable conditionally defines the HAS_STRTOLL symbol, which
indicates to the C program that the strtoll() routine is available.
indicates to the C program that the tgamma() routine is available
for the gamma function. See also d_lgamma.
+d_thread_safe_nl_langinfo_l (d_nl_langinfo_l.U):
+ This variable contains the eventual value of the
+ HAS_THREAD_SAFE_NL_LANGINFO_L symbol, which indicates if the
+ nl_langinfo_l() function exists and is thread-safe.
+
d_time (d_time.U):
This variable conditionally defines the HAS_TIME symbol, which indicates
that the time() routine exists. The time() routine is normally
This variable conditionally defines HAS_UNION_SEMUN if the
union semun is defined by including <sys/sem.h>.
+d_unlinkat (d_fsat.U):
+ This variable conditionally defines the HAS_UNLINKAT symbol, which
+ indicates the POSIX unlinkat() function isavailable.
+
d_unordered (d_unordered.U):
This variable conditionally defines the HAS_UNORDERED symbol, which
indicates to the C program that the unordered() routine is available.
This variable conditionally defines the HAS_UNSETENV symbol, which
indicates to the C program that the unsetenv () routine is available.
+d_uselocale (d_newlocale.U):
+ This variable conditionally defines the HAS_USELOCALE symbol, which
+ indicates to the C program that the uselocale() routine is available
+ to set the current locale for the calling thread.
+
d_usleep (d_usleep.U):
This variable conditionally defines HAS_USLEEP if usleep() is
available to do high granularity sleeps.
Otherwise (on USG probably), it is enough to close the standard file
descriptors and do a setpgrp().
-d_volatile (d_volatile.U):
- This variable conditionally defines the HASVOLATILE symbol, which
- indicates to the C program that this C compiler knows about the
- volatile declaration.
-
-d_vprintf (d_vprintf.U):
- This variable conditionally defines the HAS_VPRINTF symbol, which
- indicates to the C program that the vprintf() routine is available
- to printf with a pointer to an argument list.
-
d_vsnprintf (d_snprintf.U):
This variable conditionally defines the HAS_VSNPRINTF symbol, which
indicates to the C program that the vsnprintf () library function
Berkeley DB found in the <db.h> header file.
For DB version 1 this is always 0.
+default_inc_excludes_dot (defaultincdot.U):
+ When defined, remove the legacy '.' from @INC
+
direntrytype (i_dirent.U):
This symbol is set to 'struct direct' or 'struct dirent' depending on
whether dirent is available or not. You should use this pseudo type to
doublekind (longdblfio.U):
This variable, if defined, encodes the type of a double:
- 1 = IEEE 754 32-bit big little endian,
- 2 = IEEE 754 32-bit big big endian,
- 3 = IEEE 754 64-bit big little endian,
- 4 = IEEE 754 64-bit big big endian,
- 5 = IEEE 754 128-bit big little endian,
- 6 = IEEE 754 128-bit big big endian,
- 7 = IEEE 754 64-bit big mixed endian le-be,
- 8 = IEEE 754 64-bit big mixed endian be-le,
+ 1 = IEEE 754 32-bit little endian,
+ 2 = IEEE 754 32-bit big endian,
+ 3 = IEEE 754 64-bit little endian,
+ 4 = IEEE 754 64-bit big endian,
+ 5 = IEEE 754 128-bit little endian,
+ 6 = IEEE 754 128-bit big endian,
+ 7 = IEEE 754 64-bit mixed endian le-be,
+ 8 = IEEE 754 64-bit mixed endian be-le,
+ 9 = VAX 32bit little endian F float format
+ 10 = VAX 64bit little endian D float format
+ 11 = VAX 64bit little endian G float format
+ 12 = IBM 32bit format
+ 13 = IBM 64bit format
+ 14 = Cray 64bit format
-1 = unknown format.
doublemantbits (mantbits.U):
dtrace (usedtrace.U):
This variable holds the location of the dtrace executable.
+dtraceobject (dtraceobject.U):
+ Whether we need to build an object file with the dtrace tool.
+
+dtracexnolibs (dtraceobject.U):
+ Whether dtrace accepts -xnolibs. If available we call dtrace -h
+ and dtrace -G with -xnolibs to allow dtrace to run in a jail on
+ FreeBSD.
+
dynamic_ext (Extensions.U):
This variable holds a list of XS extension files we want to
link dynamically into the package. It is used by Makefile.
This variable conditionally defines the I_ARPA_INET symbol,
and indicates whether a C program should include <arpa/inet.h>.
-i_assert (i_assert.U):
- This variable conditionally defines the I_ASSERT symbol, which
- indicates to the C program that <assert.h> exists and could be
- included.
-
i_bfd (i_bfd.U):
This variable conditionally defines the I_BFD symbol, and
indicates whether a C program can include <bfd.h>.
indicates to the C program that <fenv.h> exists and should
be included.
-i_float (i_float.U):
- This variable conditionally defines the I_FLOAT symbol, and indicates
- whether a C program may include <float.h> to get symbols like DBL_MAX
- or DBL_MIN, i.e. machine dependent floating point values.
-
i_fp (i_fp.U):
This variable conditionally defines the I_FP symbol, and indicates
whether a C program should include <fp.h>.
This variable conditionally defines the I_LIBUTIL symbol, and indicates
whether a C program should include <libutil.h>.
-i_limits (i_limits.U):
- This variable conditionally defines the I_LIMITS symbol, and indicates
- whether a C program may include <limits.h> to get symbols like WORD_BIT
- and friends.
-
i_locale (i_locale.U):
This variable conditionally defines the I_LOCALE symbol,
and indicates whether a C program should include <locale.h>.
This variable conditionally defines the I_MALLOCMALLOC symbol,
and indicates whether a C program should include <malloc/malloc.h>.
-i_math (i_math.U):
- This variable conditionally defines the I_MATH symbol, and indicates
- whether a C program may include <math.h>.
-
-i_memory (i_memory.U):
- This variable conditionally defines the I_MEMORY symbol, and indicates
- whether a C program should include <memory.h>.
-
i_mntent (i_mntent.U):
This variable conditionally defines the I_MNTENT symbol, and indicates
whether a C program should include <mntent.h>.
This variable conditionally defines the I_SOCKS symbol, and indicates
whether a C program should include <socks.h>.
-i_stdarg (i_varhdr.U):
- This variable conditionally defines the I_STDARG symbol, which
- indicates to the C program that <stdarg.h> exists and should
- be included.
-
i_stdbool (i_stdbool.U):
This variable conditionally defines the I_STDBOOL symbol, which
indicates to the C program that <stdbool.h> exists and should
be included.
-i_stddef (i_stddef.U):
- This variable conditionally defines the I_STDDEF symbol, which
- indicates to the C program that <stddef.h> exists and should
- be included.
-
i_stdint (i_stdint.U):
This variable conditionally defines the I_STDINT symbol, which
indicates to the C program that <stdint.h> exists and should
be included.
i_stdlib (i_stdlib.U):
- This variable conditionally defines the I_STDLIB symbol, which
- indicates to the C program that <stdlib.h> exists and should
- be included.
-
-i_string (i_string.U):
- This variable conditionally defines the I_STRING symbol, which
- indicates that <string.h> should be included rather than <strings.h>.
+ This variable unconditionally defines the I_STDLIB symbol.
i_sunmath (i_sunmath.U):
This variable conditionally defines the I_SUNMATH symbol, and indicates
and indicates whether a C program should include <syslog.h>.
i_sysmman (i_sysmman.U):
- This variable conditionally defines the I_SYS_MMAN symbol, and
- indicates whether a C program should include <sys/mman.h>.
+ This variable conditionally defines the I_SYS_MMAN symbol,
+ and indicates whether a C program should include <sys/mman.h>.
i_sysmode (i_sysmode.U):
This variable conditionally defines the I_SYSMODE symbol,
to be included.
i_time (i_time.U):
- This variable conditionally defines I_TIME, which indicates
+ This variable unconditionally defines I_TIME, which indicates
to the C program that it should include <time.h>.
i_unistd (i_unistd.U):
This variable conditionally defines the I_UTIME symbol, and indicates
whether a C program should include <utime.h>.
-i_values (i_values.U):
- This variable conditionally defines the I_VALUES symbol, and indicates
- whether a C program may include <values.h> to get symbols like MAXLONG
- and friends.
-
-i_varargs (i_varhdr.U):
- This variable conditionally defines I_VARARGS, which indicates
- to the C program that it should include <varargs.h>.
-
-i_varhdr (i_varhdr.U):
- Contains the name of the header to be included to get va_dcl definition.
- Typically one of varargs.h or stdarg.h.
-
i_vfork (i_vfork.U):
This variable conditionally defines the I_VFORK symbol, and indicates
whether a C program should include vfork.h.
+i_wchar (i_wchar.U):
+ This variable conditionally defines the I_WCHAR symbol,
+ that indicates whether a C program may include <wchar.h>.
+
+i_xlocale (d_newlocale.U):
+ This symbol, if defined, indicates to the C program that it should
+ include <xlocale.h> to get uselocale() and its friends
+
ignore_versioned_solibs (libs.U):
This variable should be non-empty if non-versioned shared
libraries (libfoo.so.x.y) are to be ignored (because they
longdblkind (d_longdbl.U):
This variable, if defined, encodes the type of a long double:
- 0 = double, 1 = IEEE 754 128-bit big little endian,
- 2 = IEEE 754 128-bit big big endian, 3 = x86 80-bit little endian,
- 4 = x86 80-bit big endian, 5 = double-double 128-bit little endian,
- 6 = double-double 128-bit big endian, -1 = unknown format.
+ 0 = double,
+ 1 = IEEE 754 128-bit little endian,
+ 2 = IEEE 754 128-bit big endian,
+ 3 = x86 80-bit little endian,
+ 4 = x86 80-bit big endian,
+ 5 = double-double 128-bit little endian,
+ 6 = double-double 128-bit big endian,
+ 7 = 128-bit mixed-endian double-double (64-bit LEs in BE),
+ 8 = 128-bit mixed-endian double-double (64-bit BEs in LE),
+ 9 = 128-bit PDP-style mixed-endian long doubles,
+ -1 = unknown format.
-longdblmantbits (longdblmant.U):
+longdblmantbits (mantbits.U):
This symbol, if defined, tells how many mantissa bits
there are in long double precision floating point format.
Note that this can be LDBL_MANT_DIG minus one,
of the symbolic link pointing to the absolute pathname of
the executing program.
-prototype (prototype.U):
- This variable holds the eventual value of CAN_PROTOTYPE, which
- indicates the C compiler can handle function prototypes.
-
ptrsize (ptrsize.U):
This variable contains the value of the PTRSIZE symbol, which
indicates to the C program how many bytes there are in a pointer.
or
shrpenv=''
See the main perl Makefile.SH for actual working usage.
+
Alternatively, we might be able to use a command line option such
as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
$archlibexp/CORE (Linux).
REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
is defined.
-strings (i_string.U):
- This variable holds the full path of the string header that will be
- used. Typically /usr/include/string.h or /usr/include/strings.h.
-
submit (Loc.U):
This variable is defined but not used by Configure.
The value is the empty string and is not useful.
This variable contains the format string used for printing
a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
-vaproto (vaproto.U):
- This variable conditionally defines CAN_VAPROTO on systems supporting
- prototype declaration of functions with a variable number of
- arguments. See also prototype.
-
vendorarch (vendorarch.U):
This variable contains the value of the PERL_VENDORARCH symbol.
It may have a ~ on the front.
https://perl5.git.perl.org / perl5.git / blobdiff