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From F<d_usleep.U>:

This variable conditionally defines C<HAS_USLEEP> if usleep() is
available to do high granularity sleeps.

=item C<d_usleepproto>

From F<d_usleepproto.U>:

This variable conditionally defines the C<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.

=item C<d_ustat>

From F<d_ustat.U>:

This variable conditionally defines C<HAS_USTAT> if ustat() is
available to query file system statistics by dev_t.

=item C<d_vendorarch>

From F<vendorarch.U>:

This variable conditionally defined C<PERL_VENDORARCH>.

=item C<d_vendorbin>

From F<vendorbin.U>:

This variable conditionally defines C<PERL_VENDORBIN>.

=item C<d_vendorlib>

From F<vendorlib.U>:

This variable conditionally defines C<PERL_VENDORLIB>.

=item C<d_vendorscript>

From F<vendorscript.U>:

This variable conditionally defines C<PERL_VENDORSCRIPT>.

=item C<d_vfork>

From F<d_vfork.U>:

This variable conditionally defines the C<HAS_VFORK> symbol, which
indicates the vfork() routine is available.

=item C<d_void_closedir>

From F<d_closedir.U>:

This variable conditionally defines C<VOID_CLOSEDIR> if closedir()
does not return a value.

=item C<d_voidsig>

From F<d_voidsig.U>:

This variable conditionally defines C<VOIDSIG> if this system
declares "void (*signal(...))()" in F<signal.h>.  The old way was to
declare it as "int (*signal(...))()".

=item C<d_voidtty>

From F<i_sysioctl.U>:

This variable conditionally defines C<USE_IOCNOTTY> to indicate that the
ioctl() call with C<TIOCNOTTY> should be used to void tty association.
Otherwise (on C<USG> probably), it is enough to close the standard file
decriptors and do a setpgrp().

=item C<d_volatile>

From F<d_volatile.U>:

This variable conditionally defines the C<HASVOLATILE> symbol, which
indicates to the C program that this C compiler knows about the
volatile declaration.

=item C<d_vprintf>

From F<d_vprintf.U>:

This variable conditionally defines the C<HAS_VPRINTF> symbol, which
indicates to the C program that the vprintf() routine is available
to printf with a pointer to an argument list.

=item C<d_wait4>

From F<d_wait4.U>:

This variable conditionally defines the HAS_WAIT4 symbol, which
indicates the wait4() routine is available.

=item C<d_waitpid>

From F<d_waitpid.U>:

This variable conditionally defines C<HAS_WAITPID> if waitpid() is
available to wait for child process.

=item C<d_wcstombs>

From F<d_wcstombs.U>:

This variable conditionally defines the C<HAS_WCSTOMBS> symbol, which
indicates to the C program that the wcstombs() routine is available
to convert wide character strings to multibyte strings.

=item C<d_wctomb>

From F<d_wctomb.U>:

This variable conditionally defines the C<HAS_WCTOMB> symbol, which
indicates to the C program that the wctomb() routine is available
to convert a wide character to a multibyte.

os2/Config.pod  view on Meta::CPAN

=item C<getpwnam_r_proto>

From F<d_getpwnam_r.U>:

This variable encodes the prototype of getpwnam_r.
It is zero if d_getpwnam_r is undef, and one of the
C<REENTRANT_PROTO_T_ABC> macros of F<reentr.h> if d_getpwnam_r
is defined.

=item C<getpwuid_r_proto>

From F<d_getpwuid_r.U>:

This variable encodes the prototype of getpwuid_r.
It is zero if d_getpwuid_r is undef, and one of the
C<REENTRANT_PROTO_T_ABC> macros of F<reentr.h> if d_getpwuid_r
is defined.

=item C<getservbyname_r_proto>

From F<d_getservbyname_r.U>:

This variable encodes the prototype of getservbyname_r.
It is zero if d_getservbyname_r is undef, and one of the
C<REENTRANT_PROTO_T_ABC> macros of F<reentr.h> if d_getservbyname_r
is defined.

=item C<getservbyport_r_proto>

From F<d_getservbyport_r.U>:

This variable encodes the prototype of getservbyport_r.
It is zero if d_getservbyport_r is undef, and one of the
C<REENTRANT_PROTO_T_ABC> macros of F<reentr.h> if d_getservbyport_r
is defined.

=item C<getservent_r_proto>

From F<d_getservent_r.U>:

This variable encodes the prototype of getservent_r.
It is zero if d_getservent_r is undef, and one of the
C<REENTRANT_PROTO_T_ABC> macros of F<reentr.h> if d_getservent_r
is defined.

=item C<getspnam_r_proto>

From F<d_getspnam_r.U>:

This variable encodes the prototype of getspnam_r.
It is zero if d_getspnam_r is undef, and one of the
C<REENTRANT_PROTO_T_ABC> macros of F<reentr.h> if d_getspnam_r
is defined.

=item C<gidformat>

From F<gidf.U>:

This variable contains the format string used for printing a Gid_t.

=item C<gidsign>

From F<gidsign.U>:

This variable contains the signedness of a gidtype.
1 for unsigned, -1 for signed.

=item C<gidsize>

From F<gidsize.U>:

This variable contains the size of a gidtype in bytes.

=item C<gidtype>

From F<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
of getgid().  Typically, it is the type of group ids in the kernel.

=item C<glibpth>

From F<libpth.U>:

This variable holds the general path (space-separated) used to
find libraries.  It may contain directories that do not exist on
this platform, libpth is the cleaned-up version.

=item C<gmake>

From F<Loc.U>:

This variable is used internally by Configure to determine the
full pathname (if any) of the gmake program.  After Configure runs,
the value is reset to a plain C<gmake> and is not useful.

=item C<gmtime_r_proto>

From F<d_gmtime_r.U>:

This variable encodes the prototype of gmtime_r.
It is zero if d_gmtime_r is undef, and one of the
C<REENTRANT_PROTO_T_ABC> macros of F<reentr.h> if d_gmtime_r
is defined.

=item C<gnulibc_version>

From F<d_gnulibc.U>:

This variable contains the version number of the C<GNU> C library.
It is usually something like F<2.2.5>.  It is a plain '' if this
is not the C<GNU> C library, or if the version is unknown.

=item C<grep>

From F<Loc.U>:

This variable is used internally by Configure to determine the
full pathname (if any) of the grep program.  After Configure runs,
the value is reset to a plain C<grep> and is not useful.

=item C<groupcat>

os2/Config.pod  view on Meta::CPAN

=item C<shsharp>

From F<spitshell.U>:

This variable tells further Configure units whether your sh can
handle # comments.

=item C<sig_count>

From F<sig_name.U>:

This variable holds a number larger than the largest valid
signal number.  This is usually the same as the C<NSIG> macro.

=item C<sig_name>

From F<sig_name.U>:

This variable holds the signal names, space separated. The leading
C<SIG> in signal name is removed.  A C<ZERO> is prepended to the list.
This is currently not used, sig_name_init is used instead.

=item C<sig_name_init>

From F<sig_name.U>:

This variable holds the signal names, enclosed in double quotes and
separated by commas, suitable for use in the C<SIG_NAME> definition 
below.  A C<ZERO> is prepended to the list, and the list is 
terminated with a plain 0.  The leading C<SIG> in signal names
is removed. See sig_num.

=item C<sig_num>

From F<sig_name.U>:

This variable holds the signal numbers, space separated. A C<ZERO> is
prepended to the list (corresponding to the fake C<SIGZERO>).
Those numbers correspond to  the value of the signal listed
in the same place within the sig_name list.
This is currently not used, sig_num_init is used instead.

=item C<sig_num_init>

From F<sig_name.U>:

This variable holds the signal numbers, enclosed in double quotes and
separated by commas, suitable for use in the C<SIG_NUM> definition 
below.  A C<ZERO> is prepended to the list, and the list is 
terminated with a plain 0.

=item C<sig_size>

From F<sig_name.U>:

This variable contains the number of elements of the sig_name
and sig_num arrays.

=item C<signal_t>

From F<d_voidsig.U>:

This variable holds the type of the signal handler (void or int).

=item C<sitearch>

From F<sitearch.U>:

This variable contains the eventual value of the C<SITEARCH> symbol,
which is the name of the private library for this package.  It may
have a F<~> on the front. It is up to the makefile to eventually create
this directory while performing installation (with F<~> 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 F<Makefile.PL>
or equivalent.  See C<INSTALL> for details.

=item C<sitearchexp>

From F<sitearch.U>:

This variable is the F<~name> expanded version of sitearch, so that you
may use it directly in Makefiles or shell scripts.

=item C<sitebin>

From F<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 F</usr/local/bin>. Programs using
this variable must be prepared to deal with F<~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 F<Makefile.PL>
or equivalent.  See C<INSTALL> for details.

=item C<sitebinexp>

From F<sitebin.U>:

This is the same as the sitebin variable, but is filename expanded at
configuration time, for use in your makefiles.

=item C<sitehtml1dir>

From F<sitehtml1dir.U>:

This variable contains the name of the directory in which site-specific
html source pages are to be put.  It is the responsibility of the
F<Makefile.SH> to get the value of this into the proper command.
You must be prepared to do the F<~name> expansion yourself.
The standard distribution will put nothing in this directory.
After perl has been installed, users may install their own local
html pages in this directory with
MakeMaker F<Makefile.PL>
or equivalent.  See C<INSTALL> for details.

=item C<sitehtml1direxp>

os2/Config.pod  view on Meta::CPAN

=back

=head2 u

=over 4

=item C<u16size>

From F<perlxv.U>:

This variable is the size of an U16 in bytes.

=item C<u16type>

From F<perlxv.U>:

This variable contains the C type used for Perl's U16.

=item C<u32size>

From F<perlxv.U>:

This variable is the size of an U32 in bytes.

=item C<u32type>

From F<perlxv.U>:

This variable contains the C type used for Perl's U32.

=item C<u64size>

From F<perlxv.U>:

This variable is the size of an U64 in bytes.

=item C<u64type>

From F<perlxv.U>:

This variable contains the C type used for Perl's U64.

=item C<u8size>

From F<perlxv.U>:

This variable is the size of an U8 in bytes.

=item C<u8type>

From F<perlxv.U>:

This variable contains the C type used for Perl's U8.

=item C<uidformat>

From F<uidf.U>:

This variable contains the format string used for printing a Uid_t.

=item C<uidsign>

From F<uidsign.U>:

This variable contains the signedness of a uidtype.
1 for unsigned, -1 for signed.

=item C<uidsize>

From F<uidsize.U>:

This variable contains the size of a uidtype in bytes.

=item C<uidtype>

From F<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.

=item C<uname>

From F<Loc.U>:

This variable is used internally by Configure to determine the
full pathname (if any) of the uname program.  After Configure runs,
the value is reset to a plain C<uname> and is not useful.

=item C<uniq>

From F<Loc.U>:

This variable is used internally by Configure to determine the
full pathname (if any) of the uniq program.  After Configure runs,
the value is reset to a plain C<uniq> and is not useful.

=item C<uquadtype>

From F<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.

=item C<use5005threads>

From F<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.

=item C<use64bitall>

From F<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 C<CPU> at all or