X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/753475910d236d4619b2ae7f227546a173a3101e..6cf89afa34f7978c2a9aa74aacf9a7b22c527281:/Porting/Glossary diff --git a/Porting/Glossary b/Porting/Glossary index 861d4be..a706e72 100644 --- a/Porting/Glossary +++ b/Porting/Glossary @@ -24,9 +24,16 @@ afs (afs.U): with a hint value or command line option, but you'd better know what you are doing. +afsroot (afs.U): + This variable is by default set to '/afs'. In the unlikely case + this is not the correct root, it is possible to override this with + a hint value or command line option. This will be used in subsequent + tests for AFSness in the Perl configure and test process. + alignbytes (alignbytes.U): This variable holds the number of bytes required to align a - double. Usual values are 2, 4 and 8. + 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. @@ -37,16 +44,49 @@ aphostname (d_gethname.U): host name. The command is fully qualified by its absolute path, to make it safe when used by a process with super-user privileges. -apiversion (patchlevel.U): - MakeMaker will install add-on modules in a directory with the - PERL_APIVERSION version number. The value is set manually in - patchlevel.h. Normally, for maintenance releases, this is - just something like 5.005 or 5.6 or 5.7. That is, it does not - include the subversion number and does not change across - maintenance releases. This is so that add-on extensions can - be shared across maintenance versions. It is unclear how this - ought to work for developer versions. If a release breaks - binary compatibility, this number should be increased. +api_revision (patchlevel.U): + The three variables, api_revision, api_version, and + api_subversion, specify the version of the oldest perl binary + compatible with the present perl. In a full version string + such as '5.6.1', api_revision is the '5'. + Prior to 5.5.640, the format was a floating point number, + like 5.00563. + perl.c:incpush() and lib/lib.pm will automatically search in + $sitelib/.. for older directories back to the limit specified + by these api_ variables. This is only useful if you have a + perl library directory tree structured like the default one. + See INSTALL for how this works. The versioned site_perl + directory was introduced in 5.005, so that is the lowest + possible value. The version list appropriate for the current + system is determined in inc_version_list.U. + XXX To do: Since compatibility can depend on compile time + options (such as bincompat, longlong, etc.) it should + (perhaps) be set by Configure, but currently it isn't. + Currently, we read a hard-wired value from patchlevel.h. + Perhaps what we ought to do is take the hard-wired value from + patchlevel.h but then modify it if the current Configure + options warrant. patchlevel.h then would use an #ifdef guard. + +api_subversion (patchlevel.U): + The three variables, api_revision, api_version, and + api_subversion, specify the version of the oldest perl binary + compatible with the present perl. In a full version string + such as '5.6.1', api_subversion is the '1'. See api_revision for + full details. + +api_version (patchlevel.U): + The three variables, api_revision, api_version, and + api_subversion, specify the version of the oldest perl binary + compatible with the present perl. In a full version string + such as '5.6.1', api_version is the '6'. See api_revision for + full details. As a special case, 5.5.0 is rendered in the + old-style as 5.005. (In the 5.005_0x maintenance series, + this was the only versioned directory in $sitelib.) + +api_versionstring (patchlevel.U): + This variable combines api_revision, api_version, and + api_subversion in a format such as 5.6.1 (or 5_6_1) suitable + for use as a directory name. This is filesystem dependent. ar (Loc.U): This variable is used internally by Configure to determine the @@ -97,16 +137,17 @@ bin (bin.U): this variable must be prepared to deal with ~name substitution. bincompat5005 (bincompat5005.U): - This variable contains y if Perl 5.006 should be binary-compatible - with Perl 5.005. + This variable contains y if this version of Perl should be + binary-compatible with Perl 5.005. binexp (bin.U): This is the same as the bin variable, but is filename expanded at configuration time, for use in your makefiles. bison (Loc.U): - This variable is defined but not used by Configure. - The value is a plain '' and is not useful. + This variable is used internally by Configure to determine the + full pathname (if any) of the bison program. After Configure runs, + the value is reset to a plain "bison" and is not useful. byacc (Loc.U): This variable is used internally by Configure to determine the @@ -140,7 +181,8 @@ cat (Loc.U): cc (cc.U): This variable holds the name of a command to execute a C compiler which can resolve multiple global references that happen to have the same - name. Usual values are 'cc', 'Mcc', 'cc -M', and 'gcc'. + name. Usual values are 'cc' and 'gcc'. + Fervent ANSI compilers may be called 'c89'. AIX has xlc. cccdlflags (dlsrc.U): This variable contains any special flags that might need to be @@ -158,12 +200,28 @@ ccflags (ccflags.U): This variable contains any additional C compiler flags desired by the user. It is up to the Makefile to use this. +ccflags_uselargefiles (uselfs.U): + This variable contains the compiler flags needed by large file builds + and added to ccflags by hints files. + +ccname (Checkcc.U): + This can set either by hints files or by Configure. If using + gcc, this is gcc, and if not, usually equal to cc, unimpressive, no? + Some platforms, however, make good use of this by storing the + flavor of the C compiler being used here. For example if using + the Sun WorkShop suite, ccname will be 'workshop'. + ccsymbols (Cppsym.U): The variable contains the symbols defined by the C compiler alone. The symbols defined by cpp or by cc when it calls cpp are not in this list, see cppsymbols and cppccsymbols. The list is a space-separated list of symbol=value tokens. +ccversion (Checkcc.U): + This can set either by hints files or by Configure. If using + a (non-gcc) vendor cc, this variable may contain a version for + the compiler. + cf_by (cf_who.U): Login name of the person who ran the Configure script and answered the questions. This is used to tag both config.sh and config_h.SH. @@ -176,13 +234,18 @@ cf_time (cf_who.U): Holds the output of the "date" command when the configuration file was produced. This is used to tag both config.sh and config_h.SH. +charsize (charsize.U): + This variable contains the value of the CHARSIZE symbol, which + indicates to the C program how many bytes there are in a character. + chgrp (Loc.U): This variable is defined but not used by Configure. The value is a plain '' and is not useful. chmod (Loc.U): - This variable is defined but not used by Configure. - The value is a plain '' and is not useful. + This variable is used internally by Configure to determine the + full pathname (if any) of the chmod program. After Configure runs, + the value is reset to a plain "chmod" and is not useful. chown (Loc.U): This variable is defined but not used by Configure. @@ -227,7 +290,7 @@ cpp_stuff (cpp_stuff.U): used by the C preprocessor. cppccsymbols (Cppsym.U): - The variable contains the symbols defined by the C compiler when + The variable contains the symbols defined by the C compiler when it calls cpp. The symbols defined by the cc alone or cpp alone are not in this list, see ccsymbols and cppsymbols. The list is a space-separated list of symbol=value tokens. @@ -266,11 +329,6 @@ cppsymbols (Cppsym.U): not in this list, see ccsymbols and cppccsymbols. The list is a space-separated list of symbol=value tokens. -crosscompile (crosscompile.U): - This variable conditionally defines the CROSSCOMPILE symbol - which signifies that the build process is be a cross-compilation. - This is normally set by hints files or from Configure command line. - cryptlib (d_crypt.U): This variable holds -lcrypt or the path to a libcrypt.a archive if the crypt() function is not defined in the standard C library. It is @@ -281,6 +339,10 @@ csh (Loc.U): full pathname (if any) of the csh program. After Configure runs, the value is reset to a plain "csh" and is not useful. +d__fwalk (d__fwalk.U): + This variable conditionally defines HAS__FWALK if _fwalk() is + available to apply a function to all the file handles. + 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. @@ -321,9 +383,10 @@ d_bcopy (d_bcopy.U): d_bincompat5005 (bincompat5005.U): This variable conditionally defines BINCOMPAT5005 so that embed.h - can take special action if Perl 5.006 should be binary-compatible - with Perl 5.005. This is impossible for builds that use features - like threads and multiplicity it is always $undef for those versions. + can take special action if this version of Perl should be + binary-compatible with Perl 5.005. This is impossible for builds + that use features like threads and multiplicity it is always $undef + for those versions. d_bsd (Guess.U): This symbol conditionally defines the symbol BSD when running on a @@ -368,13 +431,17 @@ d_chsize (d_chsize.U): indicates to the C program that the chsize() routine is available to truncate files. You might need a -lx to get this routine. +d_class (d_class.U): + This variable conditionally defines the HAS_CLASS symbol, which + indicates to the C program that the class() routine is available. + d_closedir (d_closedir.U): This variable conditionally defines HAS_CLOSEDIR if closedir() is available. -d_cmsghdr_s (d_socket.U): +d_cmsghdr_s (d_cmsghdr_s.U): This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol, - which indicates that the the struct cmsghdr is supported. + which indicates that the struct cmsghdr is supported. d_const (d_const.U): This variable conditionally defines the HASCONST symbol, which @@ -400,6 +467,12 @@ d_dbl_dig (d_dbl_dig.U): 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 + a prototype for the dbminit() function. Otherwise, it is + up to the program to supply one. + d_difftime (d_difftime.U): This variable conditionally defines the HAS_DIFFTIME symbol, which indicates to the C program that the difftime() routine is available. @@ -467,10 +540,6 @@ d_endsent (d_endsent.U): This variable conditionally defines HAS_ENDSERVENT if endservent() is available to close whatever was being used for service queries. -d_endspent (d_endspent.U): - This variable conditionally defines HAS_ENDSPENT if endspent() is - available to finalize the scan of SysV shadow password entries. - d_eofnblk (nblock_io.U): This variable conditionally defines EOF_NONBLOCK if EOF can be seen when reading from a non-blocking I/O source. @@ -479,6 +548,10 @@ d_eunice (Guess.U): This variable conditionally defines the symbols EUNICE and VAX, which alerts the C program that it must deal with ideosyncracies of VMS. +d_fchdir (d_fchdir.U): + This variable conditionally defines the HAS_FCHDIR symbol, which + indicates to the C program that the fchdir() routine is available. + d_fchmod (d_fchmod.U): This variable conditionally defines the HAS_FCHMOD symbol, which indicates to the C program that the fchmod() routine is available @@ -493,6 +566,10 @@ d_fcntl (d_fcntl.U): This variable conditionally defines the HAS_FCNTL symbol, and indicates whether the fcntl() function exists +d_fcntl_can_lock (d_fcntl_can_lock.U): + This variable conditionally defines the FCNTL_CAN_LOCK symbol + and indicates whether file locking with fcntl() works. + d_fd_macros (d_fd_set.U): This variable contains the eventual value of the HAS_FD_MACROS symbol, which indicates if your C compiler knows about the macros which @@ -513,6 +590,14 @@ d_fgetpos (d_fgetpos.U): This variable conditionally defines HAS_FGETPOS if fgetpos() is available to get the file position indicator. +d_finite (d_finite.U): + This variable conditionally defines the HAS_FINITE symbol, which + indicates to the C program that the finite() routine is available. + +d_finitel (d_finitel.U): + This variable conditionally defines the HAS_FINITEL symbol, which + indicates to the C program that the finitel() routine is available. + d_flexfnam (d_flexfnam.U): This variable conditionally defines the FLEXFILENAMES symbol, which indicates that the system supports filenames longer than 14 characters. @@ -521,19 +606,49 @@ d_flock (d_flock.U): This variable conditionally defines HAS_FLOCK if flock() is available to do file locking. +d_flockproto (d_flockproto.U): + This variable conditionally defines the HAS_FLOCK_PROTO symbol, + which indicates to the C program that the system provides + a prototype for the flock() function. Otherwise, it is + up to the program to supply one. + d_fork (d_fork.U): This variable conditionally defines the HAS_FORK symbol, which indicates to the C program that the fork() routine is available. +d_fp_class (d_fp_class.U): + This variable conditionally defines the HAS_FP_CLASS symbol, which + indicates to the C program that the fp_class() routine is available. + d_fpathconf (d_pathconf.U): This variable conditionally defines the HAS_FPATHCONF symbol, which indicates to the C program that the pathconf() routine is available to determine file-system related limits and options associated with a given open file descriptor. -d_fpos64_t (io64.U): +d_fpclass (d_fpclass.U): + This variable conditionally defines the HAS_FPCLASS symbol, which + indicates to the C program that the fpclass() routine is available. + +d_fpclassify (d_fpclassify.U): + This variable conditionally defines the HAS_FPCLASSIFY symbol, which + indicates to the C program that the fpclassify() routine is available. + +d_fpclassl (d_fpclassl.U): + This variable conditionally defines the HAS_FPCLASSL symbol, which + indicates to the C program that the fpclassl() routine is available. + +d_fpos64_t (d_fpos64_t.U): This symbol will be defined if the C compiler supports fpos64_t. +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. + +d_fs_data_s (d_fs_data_s.U): + This variable conditionally defines the HAS_STRUCT_FS_DATA symbol, + which indicates that the struct fs_data is supported. + d_fseeko (d_fseeko.U): This variable conditionally defines the HAS_FSEEKO symbol, which indicates to the C program that the fseeko() routine is available. @@ -542,7 +657,7 @@ d_fsetpos (d_fsetpos.U): This variable conditionally defines HAS_FSETPOS if fsetpos() is available to set the file position indicator. -d_fstatfs (d_statfs.U): +d_fstatfs (d_fstatfs.U): This variable conditionally defines the HAS_FSTATFS symbol, which indicates to the C program that the fstatfs() routine is available. @@ -550,6 +665,10 @@ d_fstatvfs (d_statvfs.U): This variable conditionally defines the HAS_FSTATVFS symbol, which indicates to the C program that the fstatvfs() routine is available. +d_fsync (d_fsync.U): + This variable conditionally defines the HAS_FSYNC symbol, which + indicates to the C program that the fsync() routine is available. + d_ftello (d_ftello.U): This variable conditionally defines the HAS_FTELLO symbol, which indicates to the C program that the ftello() routine is available. @@ -568,6 +687,19 @@ d_Gconvert (d_gconvert.U): d_Gconvert='gcvt((x),(n),(b))' d_Gconvert='sprintf((b),"%.*g",(n),(x))' +d_getcwd (d_getcwd.U): + This variable conditionally defines the HAS_GETCWD symbol, which + indicates to the C program that the getcwd() routine is available + to get the current working directory. + +d_getespwnam (d_getespwnam.U): + This variable conditionally defines HAS_GETESPWNAM if getespwnam() is + available to retrieve enchanced (shadow) password entries by name. + +d_getfsstat (d_getfsstat.U): + This variable conditionally defines the HAS_GETFSSTAT symbol, which + indicates to the C program that the getfsstat() routine is available. + d_getgrent (d_getgrent.U): This variable conditionally defines the HAS_GETGRENT symbol, which indicates to the C program that the getgrent() routine is available @@ -603,15 +735,24 @@ d_gethostprotos (d_gethostprotos.U): prototypes for the various gethost*() functions. See also netdbtype.U for probing for various netdb types. +d_getitimer (d_getitimer.U): + This variable conditionally defines the HAS_GETITIMER symbol, which + indicates to the C program that the getitimer() routine is available. + d_getlogin (d_getlogin.U): This variable conditionally defines the HAS_GETLOGIN symbol, which indicates to the C program that the getlogin() routine is available to get the login name. +d_getmnt (d_getmnt.U): + This variable conditionally defines the HAS_GETMNT symbol, which + indicates to the C program that the getmnt() routine is available + to retrieve one or more mount info blocks by filename. + d_getmntent (d_getmntent.U): This variable conditionally defines the HAS_GETMNTENT symbol, which indicates to the C program that the getmntent() routine is available - to iterate through mounted files. + to iterate through mounted files to get their mount info. d_getnbyaddr (d_getnbyad.U): This variable conditionally defines the HAS_GETNETBYADDR symbol, which @@ -633,6 +774,10 @@ d_getnetprotos (d_getnetprotos.U): prototypes for the various getnet*() functions. See also netdbtype.U for probing for various netdb types. +d_getpagsz (d_getpagsz.U): + This variable conditionally defines HAS_GETPAGESIZE if getpagesize() + is available to get the system page size. + d_getpbyname (d_getprotby.U): This variable conditionally defines the HAS_GETPROTOBYNAME symbol, which indicates to the C program that the @@ -678,6 +823,10 @@ d_getprotoprotos (d_getprotoprotos.U): prototypes for the various getproto*() functions. See also netdbtype.U for probing for various netdb types. +d_getprpwnam (d_getprpwnam.U): + This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is + available to retrieve protected (shadow) password entries by name. + d_getpwent (d_getpwent.U): This variable conditionally defines the HAS_GETPWENT symbol, which indicates to the C program that the getpwent() routine is available @@ -705,10 +854,6 @@ d_getservprotos (d_getservprotos.U): prototypes for the various getserv*() functions. See also netdbtype.U for probing for various netdb types. -d_getspent (d_getspent.U): - This variable conditionally defines HAS_GETSPENT if getspent() is - available to retrieve SysV shadow password entries sequentially. - d_getspnam (d_getspnam.U): This variable conditionally defines HAS_GETSPNAM if getspnam() is available to retrieve SysV shadow password entries by name. @@ -734,6 +879,10 @@ d_htonl (d_htonl.U): This variable conditionally defines HAS_HTONL if htonl() and its friends are available to do network order byte swapping. +d_iconv (d_iconv.U): + This variable conditionally defines the HAS_ICONV symbol, which + indicates to the C program that the iconv() routine is available. + d_index (d_strchr.U): This variable conditionally defines HAS_INDEX if index() and rindex() are available for string searching. @@ -743,17 +892,29 @@ d_inetaton (d_inetaton.U): indicates to the C program that the inet_aton() function is available to parse IP address "dotted-quad" strings. -d_int64t (i_inttypes.U): +d_int64_t (d_int64_t.U): This symbol will be defined if the C compiler supports int64_t. -d_iovec_s (i_sysuio.U): - This variable conditionally defines the HAS_STRUCT_IOVEC symbol, - which indicates that the struct iovec is supported. - d_isascii (d_isascii.U): This variable conditionally defines the HAS_ISASCII constant, which indicates to the C program that isascii() is available. +d_isfinite (d_isfinite.U): + This variable conditionally defines the HAS_ISFINITE symbol, which + indicates to the C program that the isfinite() routine is available. + +d_isinf (d_isinf.U): + This variable conditionally defines the HAS_ISINF symbol, which + indicates to the C program that the isinf() 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. + +d_isnanl (d_isnanl.U): + This variable conditionally defines the HAS_ISNANL symbol, which + indicates to the C program that the isnanl() routine is available. + d_killpg (d_killpg.U): This variable conditionally defines the HAS_KILLPG symbol, which indicates to the C program that the killpg() routine is available @@ -773,10 +934,6 @@ d_link (d_link.U): This variable conditionally defines HAS_LINK if link() is available to create hard links. -d_llseek (io64.U): - This variable conditionally defines the HAS_LLSEEK symbol, which - indicates to the C program that the llseek() routine is available. - d_locconv (d_locconv.U): This variable conditionally defines HAS_LOCALECONV if localeconv() is available for numeric and monetary formatting conventions. @@ -793,6 +950,12 @@ d_longlong (d_longlong.U): This variable conditionally defines HAS_LONG_LONG if the long long type is supported. +d_lseekproto (d_lseekproto.U): + This variable conditionally defines the HAS_LSEEK_PROTO symbol, + which indicates to the C program that the system provides + a prototype for the lseek() function. Otherwise, it is + up to the program to supply one. + d_lstat (d_lstat.U): This variable conditionally defines HAS_LSTAT if lstat() is available to do file stats on symbolic links. @@ -846,10 +1009,26 @@ d_mkdir (d_mkdir.U): indicates to the C program that the mkdir() routine is available to create directories.. +d_mkdtemp (d_mkdtemp.U): + This variable conditionally defines the HAS_MKDTEMP symbol, which + indicates to the C program that the mkdtemp() routine is available + to exclusively create a uniquely named temporary directory. + d_mkfifo (d_mkfifo.U): This variable conditionally defines the HAS_MKFIFO symbol, which indicates to the C program that the mkfifo() routine is available. +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 + to exclusively create and open a uniquely named temporary file. + +d_mkstemps (d_mkstemps.U): + This variable conditionally defines the HAS_MKSTEMPS symbol, which + indicates to the C program that the mkstemps() routine is available + to exclusively create and open a uniquely named (with a suffix) + temporary file. + d_mktime (d_mktime.U): This variable conditionally defines the HAS_MKTIME symbol, which indicates to the C program that the mktime() routine is available. @@ -858,6 +1037,17 @@ d_mmap (d_mmap.U): This variable conditionally defines HAS_MMAP if mmap() is available to map a file into memory. +d_modfl (d_modfl.U): + This variable conditionally defines the HAS_MODFL symbol, which + indicates to the C program that the modfl() routine is available. + +d_modfl_pow32_bug (d_modfl.U): + This variable conditionally defines the HAS_MODFL_POW32_BUG symbol, + which indicates that modfl() 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_mprotect (d_mprotect.U): This variable conditionally defines HAS_MPROTECT if mprotect() is available to modify the access protection of a memory mapped file. @@ -899,7 +1089,7 @@ d_msgget (d_msgget.U): This variable conditionally defines the HAS_MSGGET symbol, which indicates to the C program that the msgget() routine is available. -d_msghdr_s (d_socket.U): +d_msghdr_s (d_msghdr_s.U): This variable conditionally defines the HAS_STRUCT_MSGHDR symbol, which indicates that the struct msghdr is supported. @@ -928,7 +1118,19 @@ d_nice (d_nice.U): This variable conditionally defines the HAS_NICE symbol, which indicates to the C program that the nice() routine is available. -d_off64_t (io64.U): +d_nl_langinfo (d_nl_langinfo.U): + This variable conditionally defines the HAS_NL_LANGINFO symbol, which + indicates to the C program that the nl_langinfo() routine is available. + +d_nv_preserves_uv (perlxv.U): + This variable indicates whether a variable of type nvtype + can preserve all the bits a variable of type uvtype. + +d_nv_preserves_uv_bits (perlxv.U): + This variable indicates how many of bits type uvtype + a variable nvtype can preserve. + +d_off64_t (d_off64_t.U): This symbol will be defined if the C compiler supports off64_t. d_old_pthread_create_joinable (d_pthrattrj.U): @@ -961,6 +1163,11 @@ d_pause (d_pause.U): indicates to the C program that the pause() routine is available to suspend a process until a signal is received. +d_perl_otherlibdirs (otherlibdirs.U): + This variable conditionally defines PERL_OTHERLIBDIRS, which + contains a colon-separated set of paths for the perl binary to + include in @INC. See also otherlibdirs. + d_phostname (d_gethname.U): This variable conditionally defines the HAS_PHOSTNAME symbol, which contains the shell command which, when fed to popen(), may be @@ -986,28 +1193,34 @@ d_PRId64 (quadfio.U): indiciates that stdio has a symbol to print 64-bit decimal numbers. d_PRIeldbl (longdblfio.U): - This variable conditionally defines the PERL_PRIfldlbl symbol, which + This variable conditionally defines the PERL_PRIfldbl symbol, which indiciates that stdio has a symbol to print long doubles. -d_PRIEldbl (longdblfio.U): - This variable conditionally defines the PERL_PRIfldlbl symbol, which +d_PRIEUldbl (longdblfio.U): + This variable conditionally defines the PERL_PRIfldbl symbol, which indiciates that stdio has a symbol to print long doubles. + The 'U' in the name is to separate this from d_PRIeldbl so that even + case-blind systems can see the difference. d_PRIfldbl (longdblfio.U): - This variable conditionally defines the PERL_PRIfldlbl symbol, which + This variable conditionally defines the PERL_PRIfldbl symbol, which indiciates that stdio has a symbol to print long doubles. -d_PRIFldbl (longdblfio.U): - This variable conditionally defines the PERL_PRIfldlbl symbol, which +d_PRIFUldbl (longdblfio.U): + This variable conditionally defines the PERL_PRIfldbl symbol, which indiciates that stdio has a symbol to print long doubles. + The 'U' in the name is to separate this from d_PRIfldbl so that even + case-blind systems can see the difference. d_PRIgldbl (longdblfio.U): - This variable conditionally defines the PERL_PRIfldlbl symbol, which + This variable conditionally defines the PERL_PRIfldbl symbol, which indiciates that stdio has a symbol to print long doubles. -d_PRIGldbl (longdblfio.U): - This variable conditionally defines the PERL_PRIfldlbl symbol, which +d_PRIGUldbl (longdblfio.U): + This variable conditionally defines the PERL_PRIfldbl symbol, which indiciates that stdio has a symbol to print long doubles. + The 'U' in the name is to separate this from d_PRIgldbl so that even + case-blind systems can see the difference. d_PRIi64 (quadfio.U): This variable conditionally defines the PERL_PRIi64 symbol, which @@ -1026,9 +1239,16 @@ d_PRIx64 (quadfio.U): This variable conditionally defines the PERL_PRIx64 symbol, which indiciates that stdio has a symbol to print 64-bit hexadecimal numbers. -d_PRIX64 (quadfio.U): - This variable conditionally defines the PERL_PRIX64 symbol, which +d_PRIXU64 (quadfio.U): + This variable conditionally defines the PERL_PRIXU64 symbol, which indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers. + The 'U' in the name is to separate this from d_PRIx64 so that even + case-blind systems can see the difference. + +d_pthread_atfork (d_pthread_atfork.U): + This variable conditionally defines the HAS_PTHREAD_ATFORK symbol, + which indicates to the C program that the pthread_atfork() + routine is available. d_pthread_yield (d_pthread_y.U): This variable conditionally defines the HAS_PTHREAD_YIELD @@ -1067,6 +1287,14 @@ d_pwquota (i_pwd.U): This variable conditionally defines PWQUOTA, which indicates that struct passwd contains pw_quota. +d_qgcvt (d_qgcvt.U): + This variable conditionally defines the HAS_QGCVT symbol, which + indicates to the C program that the qgcvt() routine is available. + +d_quad (quadtype.U): + This variable, if defined, tells that there's a 64-bit integer type, + quadtype. + d_readdir (d_readdir.U): This variable conditionally defines HAS_READDIR if readdir() is available to read directory entries. @@ -1080,9 +1308,9 @@ d_readv (d_readv.U): This variable conditionally defines the HAS_READV symbol, which indicates to the C program that the readv() routine is available. -d_recvmsg (d_socket.U): - This variable conditionally defines the HAS_RECVMSG symbol, - which indicates that the recvmsg is supported. +d_recvmsg (d_recvmsg.U): + This variable conditionally defines the HAS_RECVMSG symbol, which + indicates to the C program that the recvmsg() routine is available. d_rename (d_rename.U): This variable conditionally defines the HAS_RENAME symbol, which @@ -1099,17 +1327,25 @@ d_rmdir (d_rmdir.U): d_safebcpy (d_safebcpy.U): This variable conditionally defines the HAS_SAFE_BCOPY symbol if - the bcopy() routine can do overlapping copies. + 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 + a prototype for the sbrk() function. Otherwise, it is + up to the program to supply one. + d_sched_yield (d_pthread_y.U): This variable conditionally defines the HAS_SCHED_YIELD symbol if the sched_yield routine is available to yield @@ -1120,6 +1356,10 @@ d_scm_rights (d_socket.U): 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 + indiciates that stdio has a symbol to scan long doubles. + d_seekdir (d_readdir.U): This variable conditionally defines HAS_SEEKDIR if seekdir() is available. @@ -1153,9 +1393,9 @@ d_semop (d_semop.U): This variable conditionally defines the HAS_SEMOP symbol, which indicates to the C program that the semop() routine is available. -d_sendmsg (d_socket.U): - This variable conditionally defines the HAS_SENDMSG symbol, - which indicates that the sendmsg is supported. +d_sendmsg (d_sendmsg.U): + This variable conditionally defines the HAS_SENDMSG symbol, which + indicates to the C program that the sendmsg() routine is available. d_setegid (d_setegid.U): This variable conditionally defines the HAS_SETEGID symbol, which @@ -1181,6 +1421,10 @@ d_sethent (d_sethent.U): This variable conditionally defines HAS_SETHOSTENT if sethostent() is available. +d_setitimer (d_setitimer.U): + This variable conditionally defines the HAS_SETITIMER symbol, which + indicates to the C program that the setitimer() routine is available. + d_setlinebuf (d_setlnbuf.U): This variable conditionally defines the HAS_SETLINEBUF symbol, which indicates to the C program that the setlinebuf() routine is available @@ -1216,6 +1460,11 @@ d_setprior (d_setprior.U): This variable conditionally defines HAS_SETPRIORITY if setpriority() is available to set a process's priority. +d_setproctitle (d_setproctitle.U): + This variable conditionally defines the HAS_SETPROCTITLE symbol, + which indicates to the C program that the setproctitle() routine + is available. + d_setpwent (d_setpwent.U): This variable conditionally defines the HAS_SETPWENT symbol, which indicates to the C program that the setpwent() routine is available @@ -1259,10 +1508,6 @@ d_setsid (d_setsid.U): This variable conditionally defines HAS_SETSID if setsid() is available to set the process group ID. -d_setspent (d_setspent.U): - This variable conditionally defines HAS_SETSPENT if setspent() is - available to initialize the scan of SysV shadow password entries. - d_setvbuf (d_setvbuf.U): This variable conditionally defines the HAS_SETVBUF symbol, which indicates to the C program that the setvbuf() routine is available @@ -1301,34 +1546,72 @@ d_sigaction (d_sigaction.U): This variable conditionally defines the HAS_SIGACTION symbol, which indicates that the Vr4 sigaction() routine is available. +d_sigprocmask (d_sigprocmask.U): + This variable conditionally defines HAS_SIGPROCMASK + if sigprocmask() is available to examine or change the signal mask + of the calling process. + d_sigsetjmp (d_sigsetjmp.U): This variable conditionally defines the HAS_SIGSETJMP symbol, which indicates that the sigsetjmp() routine is available to call setjmp() and optionally save the process's signal mask. +d_sockatmark (d_sockatmark.U): + This variable conditionally defines the HAS_SOCKATMARK symbol, which + indicates to the C program that the sockatmark() routine is available. + +d_sockatmarkproto (d_sockatmarkproto.U): + This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol, + which indicates to the C program that the system provides + a prototype for the sockatmark() function. Otherwise, it is + up to the program to supply one. + d_socket (d_socket.U): This variable conditionally defines HAS_SOCKET, which indicates that the BSD socket interface is supported. +d_socklen_t (d_socklen_t.U): + This symbol will be defined if the C compiler supports socklen_t. + d_sockpair (d_socket.U): This variable conditionally defines the HAS_SOCKETPAIR symbol, which indicates that the BSD socketpair() is supported. +d_socks5_init (d_socks5_init.U): + This variable conditionally defines the HAS_SOCKS5_INIT symbol, which + indicates to the C program that the socks5_init() routine is available. + +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. + +d_sresgproto (d_sresgproto.U): + This variable conditionally defines the HAS_SETRESGID_PROTO symbol, + which indicates to the C program that the system provides + a prototype for the setresgid() function. Otherwise, it is + up to the program to supply one. + +d_sresuproto (d_sresuproto.U): + This variable conditionally defines the HAS_SETRESUID_PROTO symbol, + which indicates to the C program that the system provides + a prototype for the setresuid() function. Otherwise, it is + up to the program to supply one. + d_statblks (d_statblks.U): This variable conditionally defines USE_STAT_BLOCKS if this system has a stat structure declaring st_blksize and st_blocks. -d_statfs (d_statfs.U): - This variable conditionally defines the HAS_STATFS symbol, which - indicates to the C program that the statfs() routine is available. - -d_statfsflags (d_statfs.U): - This variable conditionally defines the HAS_STRUCT_STATFS_FLAGS +d_statfs_f_flags (d_statfs_f_flags.U): + This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS symbol, which indicates to struct statfs from has f_flags member. This kind of struct statfs is coming from sys/mount.h (BSD), not from sys/statfs.h (SYSV). +d_statfs_s (d_statfs_s.U): + This variable conditionally defines the HAS_STRUCT_STATFS symbol, + which indicates that the struct statfs is supported. + d_statvfs (d_statvfs.U): This variable conditionally defines the HAS_STATVFS symbol, which indicates to the C program that the statvfs() routine is available. @@ -1341,6 +1624,15 @@ d_stdio_ptr_lval (d_stdstdio.U): This variable conditionally defines STDIO_PTR_LVALUE if the FILE_ptr macro can be used as an lvalue. +d_stdio_ptr_lval_nochange_cnt (d_stdstdio.U): + This symbol is defined if using the FILE_ptr macro as an lvalue + to increase the pointer by n leaves File_cnt(fp) unchanged. + +d_stdio_ptr_lval_sets_cnt (d_stdstdio.U): + This symbol is defined if using the FILE_ptr macro as an lvalue + to increase the pointer by n has the side effect of decreasing the + value of File_cnt(fp) by n. + d_stdio_stream_array (stdio_streams.U): This variable tells whether there is an array holding the stdio streams. @@ -1378,6 +1670,10 @@ d_strerror (d_strerror.U): This variable conditionally defines HAS_STRERROR if strerror() is available to translate error numbers to strings. +d_strftime (d_strftime.U): + This variable conditionally defines the HAS_STRFTIME symbol, which + indicates to the C program that the strftime() 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 @@ -1388,15 +1684,31 @@ d_strtol (d_strtol.U): indicates to the C program that the strtol() routine is available to provide better numeric string conversion than atoi() and friends. +d_strtold (d_strtold.U): + This variable conditionally defines the HAS_STRTOLD symbol, which + indicates to the C program that the strtold() 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. + +d_strtoq (d_strtoq.U): + This variable conditionally defines the HAS_STRTOQ symbol, which + indicates to the C program that the strtoq() routine is available. + d_strtoul (d_strtoul.U): This variable conditionally defines the HAS_STRTOUL symbol, which indicates to the C program that the strtoul() routine is available to provide conversion of strings to unsigned long. -d_strtoull (strtoull.U): +d_strtoull (d_strtoull.U): This variable conditionally defines the HAS_STRTOULL symbol, which indicates to the C program that the strtoull() routine is available. +d_strtouq (d_strtouq.U): + This variable conditionally defines the HAS_STRTOUQ symbol, which + indicates to the C program that the strtouq() routine is available. + d_strxfrm (d_strxfrm.U): This variable conditionally defines HAS_STRXFRM if strxfrm() is available to transform strings. @@ -1414,6 +1726,12 @@ d_syscall (d_syscall.U): This variable conditionally defines HAS_SYSCALL if syscall() is available call arbitrary system calls. +d_syscallproto (d_syscallproto.U): + This variable conditionally defines the HAS_SYSCALL_PROTO symbol, + which indicates to the C program that the system provides + a prototype for the syscall() function. Otherwise, it is + up to the program to supply one. + d_sysconf (d_sysconf.U): This variable conditionally defines the HAS_SYSCONF symbol, which indicates to the C program that the sysconf() routine is available @@ -1469,6 +1787,14 @@ d_tzname (d_tzname.U): This variable conditionally defines HAS_TZNAME if tzname[] is available to access timezone names. +d_u32align (d_u32align.U): + This variable tells whether you must access character data + through U32-aligned pointers. + +d_ualarm (d_ualarm.U): + This variable conditionally defines the HAS_UALARM symbol, which + indicates to the C program that the ualarm() routine is available. + d_umask (d_umask.U): This variable conditionally defines the HAS_UMASK symbol, which indicates to the C program that the umask() routine is available. @@ -1483,6 +1809,30 @@ d_union_semun (d_union_semun.U): This variable conditionally defines HAS_UNION_SEMUN if the union semun is defined by including . +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. + +d_usleep (d_usleep.U): + This variable conditionally defines HAS_USLEEP if usleep() is + available to do high granularity sleeps. + +d_usleepproto (d_usleepproto.U): + This variable conditionally defines the HAS_USLEEP_PROTO symbol, + which indicates to the C program that the system provides + a prototype for the usleep() function. Otherwise, it is + up to the program to supply one. + +d_ustat (d_ustat.U): + This variable conditionally defines HAS_USTAT if ustat() is + available to query file system statistics by dev_t. + +d_vendorarch (vendorarch.U): + This variable conditionally defined PERL_VENDORARCH. + +d_vendorbin (vendorbin.U): + This variable conditionally defines PERL_VENDORBIN. + d_vendorlib (vendorlib.U): This variable conditionally defines PERL_VENDORLIB. @@ -1556,6 +1906,20 @@ db_prefixtype (i_db.U): in the header file. In older versions of DB, it was int, while in newer ones it is size_t. +db_version_major (i_db.U): + This variable contains the major version number of + Berkeley DB found in the header file. + +db_version_minor (i_db.U): + This variable contains the minor version number of + Berkeley DB found in the header file. + For DB version 1 this is always 0. + +db_version_patch (i_db.U): + This variable contains the patch version number of + Berkeley DB found in the header file. + For DB version 1 this is always 0. + defvoidused (voidflags.U): This variable contains the default value of the VOIDUSED symbol (15). @@ -1631,6 +1995,9 @@ extensions (Extensions.U): and is typically used to test whether a particular extesion is available. +extras (Extras.U): + This variable holds a list of extra modules to install. + fflushall (fflushall.U): This symbol, if defined, tells that to flush all pending stdio output one must loop through all @@ -1656,14 +2023,23 @@ flex (Loc.U): This variable is defined but not used by Configure. The value is a plain '' and is not useful. +fpossize (fpossize.U): + This variable contains the size of a fpostype in bytes. + fpostype (fpostype.U): - This variable defines Fpos_t to be something like fpost_t, long, + This variable defines Fpos_t to be something like fpos_t, long, uint, or whatever type is used to declare file positions in libc. freetype (mallocsrc.U): This variable contains the return type of free(). It is usually void, but occasionally int. +from (Cross.U): + This variable contains the command used by Configure + to copy files from the target host. Useful and available + only during Perl build. + The string ':' if not cross-compiling. + full_ar (Loc_ar.U): This variable contains the full pathname to 'ar', whether or not the user has specified 'portability'. This is only used @@ -1683,11 +2059,26 @@ full_sed (Loc_sed.U): can share this executable will have the same full pathname to 'sed.' -gccversion (cc.U): +gccosandvers (gccvers.U): + If GNU cc (gcc) is used, this variable the operating system and + version used to compile the gcc. It is set to '' if not gcc, + or if nothing useful can be parsed as the os version. + +gccversion (gccvers.U): If GNU cc (gcc) is used, this variable holds '1' or '2' to indicate whether the compiler is version 1 or 2. This is used in setting some of the default cflags. It is set to '' if not gcc. +gidformat (gidf.U): + This variable contains the format string used for printing a Gid_t. + +gidsign (gidsign.U): + This variable contains the signedness of a gidtype. + 1 for unsigned, -1 for signed. + +gidsize (gidsize.U): + This variable contains the size of a gidtype in bytes. + gidtype (gidtype.U): This variable defines Gid_t to be something like gid_t, int, ushort, or whatever type is used to declare the return type @@ -1707,6 +2098,8 @@ groupcat (nis.U): This variable contains a command that produces the text of the /etc/group file. This is normally "cat /etc/group", but can be "ypcat group" when NIS is used. + On some systems, such as os390, there may be no equivalent + command, in which case this variable is unset. groupstype (groupstype.U): This variable defines Groups_t to be something like gid_t, int, @@ -1735,12 +2128,32 @@ hostcat (nis.U): This variable contains a command that produces the text of the /etc/hosts file. This is normally "cat /etc/hosts", but can be "ypcat hosts" when NIS is used. + On some systems, such as os390, there may be no equivalent + command, in which case this variable is unset. + +i16size (perlxv.U): + This variable is the size of an I16 in bytes. + +i16type (perlxv.U): + This variable contains the C type used for Perl's I16. + +i32size (perlxv.U): + This variable is the size of an I32 in bytes. + +i32type (perlxv.U): + This variable contains the C type used for Perl's I32. + +i64size (perlxv.U): + This variable is the size of an I64 in bytes. -huge (models.U): - This variable contains a flag which will tell the C compiler and loader - to produce a program running with a huge memory model. If the - huge model is not supported, contains the flag to produce large - model programs. It is up to the Makefile to use this. +i64type (perlxv.U): + This variable contains the C type used for Perl's I64. + +i8size (perlxv.U): + This variable is the size of an I8 in bytes. + +i8type (perlxv.U): + This variable contains the C type used for Perl's I8. i_arpainet (i_arpainet.U): This variable conditionally defines the I_ARPA_INET symbol, @@ -1783,6 +2196,14 @@ i_float (i_float.U): whether a C program may include 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 . + +i_fp_class (i_fp_class.U): + This variable conditionally defines the I_FP_CLASS symbol, and indicates + whether a C program should include . + i_gdbm (i_gdbm.U): This variable conditionally defines the I_GDBM symbol, which indicates to the C program that exists and should @@ -1792,10 +2213,26 @@ i_grp (i_grp.U): This variable conditionally defines the I_GRP symbol, and indicates whether a C program should include . +i_iconv (i_iconv.U): + This variable conditionally defines the I_ICONV symbol, and indicates + whether a C program should include . + +i_ieeefp (i_ieeefp.U): + This variable conditionally defines the I_IEEEFP symbol, and indicates + whether a C program should include . + i_inttypes (i_inttypes.U): This variable conditionally defines the I_INTTYPES symbol, and indicates whether a C program should include . +i_langinfo (i_langinfo.U): + This variable conditionally defines the I_LANGINFO symbol, + and indicates whether a C program should include . + +i_libutil (i_libutil.U): + This variable conditionally defines the I_LIBUTIL symbol, and indicates + whether a C program should include . + i_limits (i_limits.U): This variable conditionally defines the I_LIMITS symbol, and indicates whether a C program may include to get symbols like WORD_BIT @@ -1852,6 +2289,10 @@ i_poll (i_poll.U): This variable conditionally defines the I_POLL symbol, and indicates whether a C program should include . +i_prot (i_prot.U): + This variable conditionally defines the I_PROT symbol, and indicates + whether a C program should include . + i_pthread (i_pthread.U): This variable conditionally defines the I_PTHREAD symbol, and indicates whether a C program should include . @@ -1901,6 +2342,10 @@ i_string (i_string.U): This variable conditionally defines the I_STRING symbol, which indicates that should be included rather than . +i_sunmath (i_sunmath.U): + This variable conditionally defines the I_SUNMATH symbol, and indicates + whether a C program should include . + i_sysaccess (i_sysaccess.U): This variable conditionally defines the I_SYS_ACCESS symbol, and indicates whether a C program should include . @@ -1928,10 +2373,18 @@ i_sysioctl (i_sysioctl.U): indicates to the C program that exists and should be included. +i_syslog (i_syslog.U): + This variable conditionally defines the I_SYSLOG symbol, + and indicates whether a C program should include . + i_sysmman (i_sysmman.U): This variable conditionally defines the I_SYS_MMAN symbol, and indicates whether a C program should include . +i_sysmode (i_sysmode.U): + This variable conditionally defines the I_SYSMODE symbol, + and indicates whether a C program should include . + i_sysmount (i_sysmount.U): This variable conditionally defines the I_SYSMOUNT symbol, and indicates whether a C program should include . @@ -1966,6 +2419,10 @@ i_sysstat (i_sysstat.U): This variable conditionally defines the I_SYS_STAT symbol, and indicates whether a C program should include . +i_sysstatfs (i_sysstatfs.U): + This variable conditionally defines the I_SYSSTATFS symbol, + and indicates whether a C program should include . + i_sysstatvfs (i_sysstatvfs.U): This variable conditionally defines the I_SYSSTATVFS symbol, and indicates whether a C program should include . @@ -1996,6 +2453,14 @@ i_sysun (i_sysun.U): to the C program that it should include to get UNIX domain socket definitions. +i_sysutsname (i_sysutsname.U): + This variable conditionally defines the I_SYSUTSNAME symbol, + and indicates whether a C program should include . + +i_sysvfs (i_sysvfs.U): + This variable conditionally defines the I_SYSVFS symbol, + and indicates whether a C program should include . + i_syswait (i_syswait.U): This variable conditionally defines I_SYS_WAIT, which indicates to the C program that it should include . @@ -2018,6 +2483,10 @@ i_unistd (i_unistd.U): This variable conditionally defines the I_UNISTD symbol, and indicates whether a C program should include . +i_ustat (i_ustat.U): + This variable conditionally defines the I_USTAT symbol, and indicates + whether a C program should include . + i_utime (i_utime.U): This variable conditionally defines the I_UTIME symbol, and indicates whether a C program should include . @@ -2044,6 +2513,21 @@ ignore_versioned_solibs (libs.U): libraries (libfoo.so.x.y) are to be ignored (because they cannot be linked against). +inc_version_list (inc_version_list.U): + This variable specifies the list of subdirectories in over + which perl.c:incpush() and lib/lib.pm will automatically + search when adding directories to @INC. The elements in + the list are separated by spaces. This is only useful + if you have a perl library directory tree structured like the + default one. See INSTALL for how this works. The versioned + site_perl directory was introduced in 5.005, so that is the + lowest possible value. + +inc_version_list_init (inc_version_list.U): + This variable holds the same list as inc_version_list, but + each item is enclosed in double quotes and separated by commas, + suitable for use in the PERL_INC_VERSION_LIST initialization. + incpath (usrinc.U): This variable must preceed the normal include path to get hte right one, as in "$incpath/usr/include" or "$incpath/usr/lib". @@ -2102,6 +2586,11 @@ installsitearch (sitearch.U): those systems using AFS. For extra portability, only this variable should be used in makefiles. +installsitebin (sitebin.U): + This variable is usually the same as sitebinexp, unless you are on + a system running AFS, in which case they may differ slightly. You + should always use this variable within your makefiles for portability. + installsitelib (sitelib.U): This variable is really the same as sitelibexp but may differ on those systems using AFS. For extra portability, only this variable @@ -2130,6 +2619,16 @@ installusrbinperl (instubperl.U): /usr/bin/perl in addition to $installbin/perl +installvendorarch (vendorarch.U): + This variable is really the same as vendorarchexp but may differ on + those systems using AFS. For extra portability, only this variable + should be used in makefiles. + +installvendorbin (vendorbin.U): + This variable is really the same as vendorbinexp but may differ on + those systems using AFS. For extra portability, only this variable + should be used in makefiles. + installvendorlib (vendorlib.U): This variable is really the same as vendorlibexp but may differ on those systems using AFS. For extra portability, only this variable @@ -2139,6 +2638,21 @@ intsize (intsize.U): This variable contains the value of the INTSIZE symbol, which indicates to the C program how many bytes there are in an int. +issymlink (issymlink.U): + This variable holds the test command to test for a symbolic link + (if they are supported). Typical values include 'test -h' and + 'test -L'. + +ivdformat (perlxvf.U): + This variable contains the format string used for printing + a Perl IV as a signed decimal integer. + +ivsize (perlxv.U): + This variable is the size of an IV in bytes. + +ivtype (perlxv.U): + This variable contains the C type used for Perl's IV. + known_extensions (Extensions.U): This variable holds a list of all XS extensions included in the package. @@ -2147,11 +2661,6 @@ ksh (Loc.U): This variable is defined but not used by Configure. The value is a plain '' and is not useful. -large (models.U): - This variable contains a flag which will tell the C compiler and loader - to produce a program running with a large memory model. It is up to - the Makefile to use this. - ld (dlsrc.U): This variable indicates the program to be used to link libraries for dynamic loading. On some systems, it is 'ld'. @@ -2168,6 +2677,10 @@ ldflags (ccflags.U): This variable contains any additional C loader flags desired by the user. It is up to the Makefile to use this. +ldflags_uselargefiles (uselfs.U): + This variable contains the loader flags needed by large file builds + and added to ldflags by hints files. + ldlibpthname (libperl.U): This variable holds the name of the shared library search path, often LD_LIBRARY_PATH. To get an empty @@ -2200,11 +2713,32 @@ libs (libs.U): This variable holds the additional libraries we want to use. It is up to the Makefile to deal with it. +libsdirs (libs.U): + This variable holds the directory names aka dirnames of the libraries + we found and accepted, duplicates are removed. + +libsfiles (libs.U): + This variable holds the filenames aka basenames of the libraries + we found and accepted. + +libsfound (libs.U): + This variable holds the full pathnames of the libraries + we found and accepted. + +libspath (libs.U): + This variable holds the directory names probed for libraries. + libswanted (Myinit.U): This variable holds a list of all the libraries we want to search. The order is chosen to pick up the c library ahead of ucb or bsd libraries for SVR4. +libswanted_uselargefiles (uselfs.U): + This variable contains the libraries needed by large file builds + and added to ldflags by hints files. It is a space separated list + of the library names without the "lib" prefix or any suffix, just + like libswanted.. + line (Loc.U): This variable is defined but not used by Configure. The value is a plain '' and is not useful. @@ -2350,12 +2884,6 @@ Mcc (Loc.U): full pathname (if any) of the Mcc program. After Configure runs, the value is reset to a plain "Mcc" and is not useful. -medium (models.U): - This variable contains a flag which will tell the C compiler and loader - to produce a program running with a medium memory model. If the - medium model is not supported, contains the flag to produce large - model programs. It is up to the Makefile to use this. - mips_type (usrinc.U): This variable holds the environment type for the mips system. Possible values are "BSD 4.3" and "System V". @@ -2370,11 +2898,6 @@ mmaptype (d_mmap.U): (and simultaneously the type of the first argument). It can be 'void *' or 'caddr_t'. -models (models.U): - This variable contains the list of memory models supported by this - system. Possible component values are none, split, unsplit, small, - medium, large, and huge. The component values are space separated. - modetype (modetype.U): This variable defines modetype to be something like mode_t, int, unsigned short, or whatever type is used to declare file @@ -2421,6 +2944,15 @@ n (n.U): command to suppress newline. Otherwise it is null. Correct usage is $echo $n "prompt for a question: $c". +need_va_copy (need_va_copy.U): + This symbol, if defined, indicates that the system stores + the variable argument list datatype, va_list, in a format + that cannot be copied by simple assignment, so that some + other means must be used when copying is required. + As such systems vary in their provision (or non-provision) + of copying mechanisms, handy.h defines a platform- + independent macro, Perl_va_copy(src, dst), to do the job. + netdb_hlen_type (netdbtype.U): This variable holds the type used for the 2nd argument to gethostbyaddr(). Usually, this is int or size_t or unsigned. @@ -2467,6 +2999,36 @@ nroff (Loc.U): full pathname (if any) of the nroff program. After Configure runs, the value is reset to a plain "nroff" and is not useful. +nveformat (perlxvf.U): + This variable contains the format string used for printing + a Perl NV using %e-ish floating point format. + +nvEUformat (perlxvf.U): + This variable contains the format string used for printing + a Perl NV using %E-ish floating point format. + +nvfformat (perlxvf.U): + This variable confains the format string used for printing + a Perl NV using %f-ish floating point format. + +nvFUformat (perlxvf.U): + This variable confains the format string used for printing + a Perl NV using %F-ish floating point format. + +nvgformat (perlxvf.U): + This variable contains the format string used for printing + a Perl NV using %g-ish floating point format. + +nvGUformat (perlxvf.U): + This variable contains the format string used for printing + a Perl NV using %G-ish floating point format. + +nvsize (perlxv.U): + This variable is the size of an NV in bytes. + +nvtype (perlxv.U): + This variable contains the C type used for Perl's NV. + o_nonblock (nblock_io.U): This variable bears the symbol value to be used during open() or fcntl() to turn on non-blocking I/O for a file descriptor. If you wish to switch @@ -2507,6 +3069,16 @@ osvers (Oldconfig.U): same for this package, hints files might just be os_4.0 or os_4.1, etc., not keeping separate files for each little release. +otherlibdirs (otherlibdirs.U): + This variable contains a colon-separated set of paths for the perl + binary to search for additional library files or modules. + These directories will be tacked to the end of @INC. + Perl will automatically search below each path for version- + and architecture-specific directories. See inc_version_list + for more details. + A value of ' ' means 'none' and is used to preserve this value + for the next run through Configure. + package (package.U): This variable contains the name of the package being constructed. It is primarily intended for the use of later Configure units. @@ -2519,22 +3091,57 @@ passcat (nis.U): This variable contains a command that produces the text of the /etc/passwd file. This is normally "cat /etc/passwd", but can be "ypcat passwd" when NIS is used. + On some systems, such as os390, there may be no equivalent + command, in which case this variable is unset. patchlevel (patchlevel.U): The patchlevel level of this package. The value of patchlevel comes from the patchlevel.h file. + In a version number such as 5.6.1, this is the "6". + In patchlevel.h, this is referred to as "PERL_VERSION". path_sep (Unix.U): This is an old synonym for p_ in Head.U, the character used to separate elements in the command shell search PATH. +perl5 (perl5.U): + This variable contains the full path (if any) to a previously + installed perl5.005 or later suitable for running the script + to determine inc_version_list. + perl (Loc.U): This variable is defined but not used by Configure. The value is a plain '' and is not useful. +perl_patchlevel (patchlevel.U): + This is the Perl patch level, a numeric change identifier, + as defined by whichever source code maintenance system + is used to maintain the patches; currently Perforce. + It does not correlate with the Perl version numbers or + the maintenance versus development dichotomy except + by also being increasing. + +PERL_REVISION (Oldsyms.U): + In a Perl version number such as 5.6.2, this is the 5. + This value is manually set in patchlevel.h + +PERL_SUBVERSION (Oldsyms.U): + In a Perl version number such as 5.6.2, this is the 2. + Values greater than 50 represent potentially unstable + development subversions. + This value is manually set in patchlevel.h + +PERL_VERSION (Oldsyms.U): + In a Perl version number such as 5.6.2, this is the 6. + This value is manually set in patchlevel.h + perladmin (perladmin.U): Electronic mail address of the perl5 administrator. +perllibs (End.U): + The list of libraries needed by Perl only (any libraries needed + by extensions only will by dropped, if using dynamic loading). + perlpath (perlpath.U): This variable contains the eventual value of the PERLPATH symbol, which contains the name of the perl interpreter to be used in @@ -2612,6 +3219,14 @@ 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. +quadkind (quadtype.U): + This variable, if defined, encodes the type of a quad: + 1 = int, 2 = long, 3 = long long, 4 = int64_t. + +quadtype (quadtype.U): + This variable defines Quad_t to be something like long, int, + long long, int64_t, or whatever type is used for 64-bit integers. + randbits (randfunc.U): Indicates how many bits are produced by the function used to generate normalized random numbers. @@ -2636,6 +3251,11 @@ rd_nodata (nblock_io.U): used, which is a shame because you cannot make the difference between no data and an EOF.. Sigh! +revision (patchlevel.U): + The value of revision comes from the patchlevel.h file. + In a version number such as 5.6.1, this is the "5". + In patchlevel.h, this is referred to as "PERL_REVISION". + rm (Loc.U): This variable is used internally by Configure to determine the full pathname (if any) of the rm program. After Configure runs, @@ -2645,6 +3265,12 @@ rmail (Loc.U): This variable is defined but not used by Configure. The value is a plain '' and is not useful. +run (Cross.U): + This variable contains the command used by Configure + to copy and execute a cross-compiled executable in the + target host. Useful and available only during Perl build. + Empty string '' if not cross-compiling. + runnm (usenm.U): This variable contains 'true' or 'false' depending whether the nm extraction should be performed or not, according to the value @@ -2766,6 +3392,10 @@ sig_num_init (sig_name.U): below. A "ZERO" is prepended to the list, and the list is terminated with a plain 0. +sig_size (sig_name.U): + This variable contains the number of elements of the sig_name + and sig_num arrays, excluding the final NULL entry. + signal_t (d_voidsig.U): This variable holds the type of the signal handler (void or int). @@ -2774,16 +3404,46 @@ sitearch (sitearch.U): which is the name of the private library for this package. It may have a ~ on the front. It is up to the makefile to eventually create this directory while performing installation (with ~ substitution). + The standard distribution will put nothing in this directory. + After perl has been installed, users may install their own local + architecture-dependent modules in this directory with + MakeMaker Makefile.PL + or equivalent. See INSTALL for details. sitearchexp (sitearch.U): This variable is the ~name expanded version of sitearch, so that you may use it directly in Makefiles or shell scripts. +sitebin (sitebin.U): + This variable holds the name of the directory in which the user wants + to put add-on publicly executable files for the package in question. It + is most often a local directory such as /usr/local/bin. Programs using + this variable must be prepared to deal with ~name substitution. + The standard distribution will put nothing in this directory. + After perl has been installed, users may install their own local + executables in this directory with + MakeMaker Makefile.PL + or equivalent. See INSTALL for details. + +sitebinexp (sitebin.U): + This is the same as the sitebin variable, but is filename expanded at + configuration time, for use in your makefiles. + sitelib (sitelib.U): This variable contains the eventual value of the SITELIB symbol, which is the name of the private library for this package. It may have a ~ on the front. It is up to the makefile to eventually create this directory while performing installation (with ~ substitution). + The standard distribution will put nothing in this directory. + After perl has been installed, users may install their own local + architecture-independent modules in this directory with + MakeMaker Makefile.PL + or equivalent. See INSTALL for details. + +sitelib_stem (sitelib.U): + This variable is $sitelibexp with any trailing version-specific component + removed. The elements in inc_version_list (inc_version_list.U) can + be tacked onto this variable to generate a list of directories to search. sitelibexp (sitelib.U): This variable is the ~name expanded version of sitelib, so that you @@ -2792,11 +3452,15 @@ sitelibexp (sitelib.U): siteprefix (siteprefix.U): This variable holds the full absolute path of the directory below which the user will install add-on packages. + See INSTALL for usage and examples. siteprefixexp (siteprefix.U): This variable holds the full absolute path of the directory below which the user will install add-on packages. Derived from siteprefix. +sizesize (sizesize.U): + This variable contains the size of a sizetype in bytes. + sizetype (sizetype.U): This variable defines sizetype to be something like size_t, unsigned long, or whatever type is used to declare length @@ -2810,11 +3474,6 @@ smail (Loc.U): This variable is defined but not used by Configure. The value is a plain '' and is not useful. -small (models.U): - This variable contains a flag which will tell the C compiler and loader - to produce a program running with a small memory model. It is up to - the Makefile to use this. - so (so.U): This variable holds the extension used to identify shared libraries (also known as shared objects) on the system. Usually set to 'so'. @@ -2825,6 +3484,11 @@ sockethdr (d_socket.U): socketlib (d_socket.U): This variable has the names of any libraries needed for socket support. +socksizetype (socksizetype.U): + This variable holds the type used for the size argument + for various socket calls like accept. Usual values include + socklen_t, size_t, and int. + sort (Loc.U): This variable is used internally by Configure to determine the full pathname (if any) of the sort program. After Configure runs, @@ -2839,12 +3503,6 @@ spitshell (spitshell.U): This variable contains the command necessary to spit out a runnable shell on this system. It is either cat or a grep '-v' for # comments. -split (models.U): - This variable contains a flag which will tell the C compiler and loader - to produce a program that will run in separate I and D space, for those - machines that support separation of instruction and data space. It is - up to the Makefile to use this. - sPRId64 (quadfio.U): This variable, if defined, contains the string used by stdio to format 64-bit decimal numbers (format 'd') for output. @@ -2853,25 +3511,31 @@ sPRIeldbl (longdblfio.U): This variable, if defined, contains the string used by stdio to format long doubles (format 'e') for output. -sPRIEldbl (longdblfio.U): +sPRIEUldbl (longdblfio.U): This variable, if defined, contains the string used by stdio to format long doubles (format 'E') for output. + The 'U' in the name is to separate this from sPRIeldbl so that even + case-blind systems can see the difference. sPRIfldbl (longdblfio.U): This variable, if defined, contains the string used by stdio to format long doubles (format 'f') for output. -sPRIFldbl (longdblfio.U): +sPRIFUldbl (longdblfio.U): This variable, if defined, contains the string used by stdio to format long doubles (format 'F') for output. + The 'U' in the name is to separate this from sPRIfldbl so that even + case-blind systems can see the difference. sPRIgldbl (longdblfio.U): This variable, if defined, contains the string used by stdio to format long doubles (format 'g') for output. -sPRIGldbl (longdblfio.U): +sPRIGUldbl (longdblfio.U): This variable, if defined, contains the string used by stdio to format long doubles (format 'G') for output. + The 'U' in the name is to separate this from sPRIgldbl so that even + case-blind systems can see the difference. sPRIi64 (quadfio.U): This variable, if defined, contains the string used by stdio to @@ -2889,15 +3553,21 @@ sPRIx64 (quadfio.U): This variable, if defined, contains the string used by stdio to format 64-bit hexadecimal numbers (format 'x') for output. -sPRIX64 (quadfio.U): +sPRIXU64 (quadfio.U): This variable, if defined, contains the string used by stdio to format 64-bit hExADECimAl numbers (format 'X') for output. + The 'U' in the name is to separate this from sPRIx64 so that even + case-blind systems can see the difference. src (src.U): This variable holds the path to the package source. It is up to the Makefile to use this variable and set VPATH accordingly to find the sources remotely. +sSCNfldbl (longdblfio.U): + This variable, if defined, contains the string used by stdio to + format long doubles (format 'f') for input. + ssizetype (ssizetype.U): This variable defines ssizetype to be something like ssize_t, long or int. It is used by functions that return a count @@ -2945,7 +3615,7 @@ stdio_cnt (d_stdstdio.U): stdio_filbuf (d_stdstdio.U): This variable defines how, given a FILE pointer, fp, to tell - stdio to refill it's internal buffers (?). This will + stdio to refill its internal buffers (?). This will be used to define the macro FILE_filbuf(fp). stdio_ptr (d_stdstdio.U): @@ -2968,6 +3638,8 @@ submit (Loc.U): subversion (patchlevel.U): The subversion level of this package. The value of subversion comes from the patchlevel.h file. + In a version number such as 5.6.1, this is the "1". + In patchlevel.h, this is referred to as "PERL_SUBVERSION". This is unique to perl. sysman (sysman.U): @@ -2984,6 +3656,10 @@ tar (Loc.U): This variable is defined but not used by Configure. The value is a plain '' and is not useful. +targetarch (Cross.U): + If cross-compiling, this variable contains the target architecture. + If not, this will be empty. + tbl (Loc.U): This variable is defined but not used by Configure. The value is a plain '' and is not useful. @@ -3005,6 +3681,12 @@ timetype (d_time.U): or time_t on BSD sites (in which case should be included). Anyway, the type Time_t should be used. +to (Cross.U): + This variable contains the command used by Configure + to copy to from the target host. Useful and available + only during Perl build. + The string ':' if not cross-compiling. + touch (Loc.U): This variable is used internally by Configure to determine the full pathname (if any) of the touch program. After Configure runs, @@ -3025,6 +3707,40 @@ troff (Loc.U): This variable is defined but not used by Configure. The value is a plain '' and is not useful. +u16size (perlxv.U): + This variable is the size of an U16 in bytes. + +u16type (perlxv.U): + This variable contains the C type used for Perl's U16. + +u32size (perlxv.U): + This variable is the size of an U32 in bytes. + +u32type (perlxv.U): + This variable contains the C type used for Perl's U32. + +u64size (perlxv.U): + This variable is the size of an U64 in bytes. + +u64type (perlxv.U): + This variable contains the C type used for Perl's U64. + +u8size (perlxv.U): + This variable is the size of an U8 in bytes. + +u8type (perlxv.U): + This variable contains the C type used for Perl's U8. + +uidformat (uidf.U): + This variable contains the format string used for printing a Uid_t. + +uidsign (uidsign.U): + This variable contains the signedness of a uidtype. + 1 for unsigned, -1 for signed. + +uidsize (uidsize.U): + This variable contains the size of a uidtype in bytes. + uidtype (uidtype.U): This variable defines Uid_t to be something like uid_t, int, ushort, or whatever type is used to declare user ids in the kernel. @@ -3039,19 +3755,51 @@ uniq (Loc.U): full pathname (if any) of the uniq program. After Configure runs, the value is reset to a plain "uniq" and is not useful. -use64bits (use64bits.U): - This variable conditionally defines the USE_64_BITS symbol, - and indicates that explicit 64-bit interfaces should be used - when available. +uquadtype (quadtype.U): + This variable defines Uquad_t to be something like unsigned long, + unsigned int, unsigned long long, uint64_t, or whatever type is + used for 64-bit integers. + +use5005threads (usethreads.U): + This variable conditionally defines the USE_5005THREADS symbol, + and indicates that Perl should be built to use the 5.005-based + threading implementation. + +use64bitall (use64bits.U): + This variable conditionally defines the USE_64_BIT_ALL symbol, + and indicates that 64-bit integer types should be used + when available. The maximal possible + 64-bitness is employed: LP64 or ILP64, meaning that you will + be able to use more than 2 gigabytes of memory. This mode is + even more binary incompatible than USE_64_BIT_INT. You may not + be able to run the resulting executable in a 32-bit CPU at all or + you may need at least to reboot your OS to 64-bit mode. + +use64bitint (use64bits.U): + This variable conditionally defines the USE_64_BIT_INT symbol, + and indicates that 64-bit integer types should be used + when available. The minimal possible 64-bitness + is employed, just enough to get 64-bit integers into Perl. + This may mean using for example "long longs", while your memory + may still be limited to 2 gigabytes. + +usecrosscompile (Cross.U): + This variable conditionally defines the USE_CROSS_COMPILE symbol, + and indicates that Perl has been cross-compiled. usedl (dlsrc.U): - This variable indicates if the the system supports dynamic + This variable indicates if the system supports dynamic loading of some sort. See also dlsrc and dlobj. +useithreads (usethreads.U): + This variable conditionally defines the USE_ITHREADS symbol, + and indicates that Perl should be built to use the interpreter-based + threading implementation. + uselargefiles (uselfs.U): This variable conditionally defines the USE_LARGE_FILES symbol, and indicates that large file interfaces should be used when - available. The use64bits symbol will also be turned on if necessary. + available. uselongdouble (uselongdbl.U): This variable conditionally defines the USE_LONG_DOUBLE symbol, @@ -3096,6 +3844,13 @@ useposix (Extensions.U): for hints files to indicate that POSIX will not compile on a particular system. +usereentrant (usethreads.U): + This variable conditionally defines the USE_REENTRANT_API symbol, + which indicates that the thread code may try to use the various + _r versions of library functions. This is only potentially + meaningful if usethreads is set and is very experimental, it is + not even prompted for. + usesfio (d_sfio.U): This variable is set to true when the user agrees to use sfio. It is set to false when sfio is not available or when the user @@ -3112,7 +3867,7 @@ usesocks (usesocks.U): and indicates that Perl should be built to use SOCKS. usethreads (usethreads.U): - This variable conditionally defines the USE_THREADS symbol, + This variable conditionally defines the USE_5005THREADS symbol, and indicates that Perl should be built to use threads. usevendorprefix (vendorprefix.U): @@ -3132,13 +3887,67 @@ uuname (Loc.U): This variable is defined but not used by Configure. The value is a plain '' and is not useful. +uvoformat (perlxvf.U): + This variable contains the format string used for printing + a Perl UV as an unsigned octal integer. + +uvsize (perlxv.U): + This variable is the size of a UV in bytes. + +uvtype (perlxv.U): + This variable contains the C type used for Perl's UV. + +uvuformat (perlxvf.U): + This variable contains the format string used for printing + a Perl UV as an unsigned decimal integer. + +uvxformat (perlxvf.U): + This variable contains the format string used for printing + a Perl UV as an unsigned hexadecimal integer in lowercase abcdef. + +uvXUformat (perlxvf.U): + This variable contains the format string used for printing + a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF. + +vendorarch (vendorarch.U): + This variable contains the value of the PERL_VENDORARCH symbol. + It may have a ~ on the front. + The standard distribution will put nothing in this directory. + Vendors who distribute perl may wish to place their own + architecture-dependent modules and extensions in this directory with + MakeMaker Makefile.PL INSTALLDIRS=vendor + or equivalent. See INSTALL for details. + +vendorarchexp (vendorarch.U): + This variable is the ~name expanded version of vendorarch, so that you + may use it directly in Makefiles or shell scripts. + +vendorbin (vendorbin.U): + This variable contains the eventual value of the VENDORBIN symbol. + It may have a ~ on the front. + The standard distribution will put nothing in this directory. + Vendors who distribute perl may wish to place additional + binaries in this directory with + MakeMaker Makefile.PL INSTALLDIRS=vendor + or equivalent. See INSTALL for details. + +vendorbinexp (vendorbin.U): + This variable is the ~name expanded version of vendorbin, so that you + may use it directly in Makefiles or shell scripts. + vendorlib (vendorlib.U): This variable contains the eventual value of the VENDORLIB symbol, - which is the name of the private library for this package. It may - have a ~ on the front. It is up to the makefile to eventually create - this directory while performing installation (with ~ substitution). - Vendors who distribute perl binaries may place their own - extensions and modules in this directory. + which is the name of the private library for this package. + The standard distribution will put nothing in this directory. + Vendors who distribute perl may wish to place their own + modules in this directory with + MakeMaker Makefile.PL INSTALLDIRS=vendor + or equivalent. See INSTALL for details. + +vendorlib_stem (vendorlib.U): + This variable is $vendorlibexp with any trailing version-specific component + removed. The elements in inc_version_list (inc_version_list.U) can + be tacked onto this variable to generate a list of directories to search. vendorlibexp (vendorlib.U): This variable is the ~name expanded version of vendorlib, so that you @@ -3147,17 +3956,39 @@ vendorlibexp (vendorlib.U): vendorprefix (vendorprefix.U): This variable holds the full absolute path of the directory below which the vendor will install add-on packages. + See INSTALL for usage and examples. vendorprefixexp (vendorprefix.U): This variable holds the full absolute path of the directory below which the vendor will install add-on packages. Derived from vendorprefix. version (patchlevel.U): - The full version number of this package. This combines - baserev, patchlevel, and subversion to get the full - version number, including any possible subversions. Care - is taken to use the C locale in order to get something - like 5.004 instead of 5,004. This is unique to perl. + The full version number of this package, such as 5.6.1 (or 5_6_1). + This combines revision, patchlevel, and subversion to get the + full version number, including any possible subversions. + This is suitable for use as a directory name, and hence is + filesystem dependent. + +version_patchlevel_string (patchlevel.U): + This is a string combining version, subversion and + perl_patchlevel (if perl_patchlevel is non-zero). + It is typically something like + 'version 7 subversion 1' or + 'version 7 subversion 1 patchlevel 11224' + It is computed here to avoid duplication of code in myconfig.SH + and lib/Config.pm. + +versiononly (versiononly.U): + If set, this symbol indicates that only the version-specific + components of a perl installation should be installed. + This may be useful for making a test installation of a new + version without disturbing the existing installation. + Setting versiononly is equivalent to setting installperl's -v option. + In particular, the non-versioned scripts and programs such as + a2p, c2ph, h2xs, pod2*, and perldoc are not installed + (see INSTALL for a more complete list). Nor are the man + pages installed. + Usually, this is undef. vi (Loc.U): This variable is defined but not used by Configure. @@ -3190,6 +4021,14 @@ xs_apiversion (xs_apiversion.U): though in principle we could go snooping around in old Config.pm files. +yacc (yacc.U): + This variable holds the name of the compiler compiler we + want to use in the Makefile. It can be yacc, byacc, or bison -y. + +yaccflags (yacc.U): + This variable contains any additional yacc flags desired by the + user. It is up to the Makefile to use this. + zcat (Loc.U): This variable is defined but not used by Configure. The value is a plain '' and is not useful.