=head1 NAME
-Install - Build and Installation guide for perl5.
+INSTALL - Build and Installation guide for perl 5.
=head1 SYNOPSIS
-First, make sure you have an up-to-date version of Perl. If you
+First, make sure you have an up-to-date version of Perl. If you
didn't get your Perl source from CPAN, check the latest version at
http://www.cpan.org/src/. Perl uses a version scheme where even-numbered
subreleases (like 5.8.x and 5.10.x) are stable maintenance releases and
tested in development releases and only if they prove themselves to be
worthy will they be migrated to the maintenance releases.
-The basic steps to build and install perl5 on a Unix system with all
+The basic steps to build and install perl 5 on a Unix system with all
the defaults are to run, from a freshly unpacked source tree:
sh Configure -de
The above commands will install Perl to /usr/local (or some other
platform-specific directory -- see the appropriate file in hints/.)
-If that's not okay with you, can run Configure interactively, by
+If that's not okay with you, you can run Configure interactively, by
just typing "sh Configure" (without the -de args). You can also specify
any prefix location by adding "-Dprefix='/some/dir'" to Configure's args.
To explicitly name the perl binary, use the command
"make install PERLNAME=myperl".
+Building perl from source requires an ANSI compliant C compiler.
+A minimum of C89 is required. Some features available in C99 will
+be probed for and used when found. The perl build process does not
+rely on anything more than C89.
+
These options, and many more, are explained in further detail below.
+If you're building perl from a git repository, you should also consult
+the documentation in pod/perlgit.pod for information on that special
+circumstance.
+
If you have problems, corrections, or questions, please see
L<"Reporting Problems"> below.
For information on what's new in this release, see the
-pod/perl5100delta.pod file. For more detailed information about specific
-changes, see the Changes file.
+pod/perldelta.pod file. For more information about how to find more
+specific detail about changes, see the Changes file.
=head1 DESCRIPTION
=head2 Changes and Incompatibilities
-Please see pod/perl5100delta.pod for a description of the changes and
+Please see pod/perldelta.pod for a description of the changes and
potential incompatibilities introduced with this release. A few of
the most important issues are listed below, but you should refer
-to pod/perl5100delta.pod for more detailed information.
+to pod/perldelta.pod for more detailed information.
B<WARNING:> This version is not binary compatible with prior releases of Perl.
-
If you have built extensions (i.e. modules that include C code)
using an earlier version of Perl, you will need to rebuild and reinstall
those extensions.
Pure perl modules without XS or C code should continue to work fine
without reinstallation. See the discussion below on
-L<"Coexistence with earlier versions of perl5"> for more details.
+L<"Coexistence with earlier versions of perl 5"> for more details.
The standard extensions supplied with Perl will be handled automatically.
On a related issue, old modules may possibly be affected by the changes
in the Perl language in the current release. Please see
-pod/perl5100delta.pod for a description of what's changed. See your
+pod/perldelta.pod for a description of what's changed. See your
installed copy of the perllocal.pod file for a (possibly incomplete)
list of locally installed modules. Also see CPAN::autobundle for one
way to make a "bundle" of your currently installed modules.
By default, for most systems, perl will be installed in
/usr/local/{bin, lib, man}. (See L<"Installation Directories">
-and L<"Coexistence with earlier versions of perl5"> below for
+and L<"Coexistence with earlier versions of perl 5"> below for
further details.)
You can specify a different 'prefix' for the default installation
model (available internally since 5.6, and as a user-level module since 5.8) is
called interpreter-based implementation (ithreads), with one interpreter per
thread, and explicit sharing of data. The (deprecated) 5.005 version
-(5005threads) has been removed for release 5.10.
+(5005threads) was removed for release 5.10.
The 'threads' module is for use with the ithreads implementation. The
'Thread' module emulates the old 5005threads interface on top of the current
aware.
Natively 64-bit systems need neither -Duse64bitint nor -Duse64bitall.
+On these systems, it might be the default compilation mode, and there
+is currently no guarantee that passing no use64bitall option to the
+Configure process will build a 32bit perl. Implementing -Duse32bit*
+options is planned for a future release of perl.
=head3 Long doubles
If you want to force perl to be compiled completely
statically, you can either choose this when Configure prompts you or
you can use the Configure command line option -Uusedl.
+With this option, you won't be able to use any new extension
+(XS) module without recompiling perl itself.
=head3 Building a shared Perl library
whenever perl is running as a stand alone interpreter, and to call the safe
but potentially leaky C<putenv()> function when the perl interpreter is
embedded in another application. You can force perl to always use C<putenv()>
-by compiling with -DPERL_USE_SAFE_PUTENV. You can force an embedded perl to
-use direct manipulation by setting C<PL_use_safe_putenv = 0;> after the
-C<perl_construct()> call.
+by compiling with C<-Accflags="-DPERL_USE_SAFE_PUTENV">, see section
+L</"Altering Configure variables for C compiler switches etc.">.
+You can force an embedded perl to use direct manipulation by setting
+C<PL_use_safe_putenv = 0;> after the C<perl_construct()> call.
=head2 Installation Directories
=item Directories for the perl distribution
-By default, Configure will use the following directories for 5.10.0.
+By default, Configure will use the following directories for 5.15.7.
$version is the full perl version number, including subversion, e.g.
-5.10.0 or 5.9.5, and $archname is a string like sun4-sunos,
+5.12.3, and $archname is a string like sun4-sunos,
determined by Configure. The full definitions of all Configure
variables are in the file Porting/Glossary.
$vendorman3direxp /usr/man/man3
Note how in this example, the vendor-supplied directories are in the
-/usr hierarchy, while the directories reserved for the end-user are in
+/usr hierarchy, while the directories reserved for the end user are in
the /usr/local hierarchy.
The entire installed library hierarchy is installed in locations with
version numbers, keeping the installations of different versions distinct.
However, later installations of Perl can still be configured to search the
installed libraries corresponding to compatible earlier versions.
-See L<"Coexistence with earlier versions of perl5"> below for more details
+See L<"Coexistence with earlier versions of perl 5"> below for more details
on how Perl can be made to search older version directories.
Of course you may use these directories however you see fit. For
directories ahead of those in APPLLIB_EXP by using any of the standard
run-time methods: $PERLLIB, $PERL5LIB, -I, use lib, etc.
-=item USE_SITECUSTOMIZE
+=item usesitecustomize
Run-time customization of @INC can be enabled with:
sh Configure -Dusesitecustomize
-Which will define USE_SITECUSTOMIZE and $Config{usesitecustomize}.
-When enabled, make perl run F<$sitelibexp/sitecustomize.pl> before
+which will define USE_SITECUSTOMIZE and $Config{usesitecustomize}.
+When enabled, this makes perl run F<$sitelibexp/sitecustomize.pl> before
anything else. This script can then be set up to add additional
entries to @INC.
Further details about the installation directories, maintenance and
development subversions, and about supporting multiple versions are
-discussed in L<"Coexistence with earlier versions of perl5"> below.
+discussed in L<"Coexistence with earlier versions of perl 5"> below.
If you specify a prefix that contains the string "perl", then the
library directory structure is slightly simplified. Instead of
=head2 Changing the installation directory
Configure distinguishes between the directory in which perl (and its
-associated files) should be installed and the directory in which it
+associated files) should be installed, and the directory in which it
will eventually reside. For most sites, these two are the same; for
sites that use AFS, this distinction is handled automatically.
-However, sites that use software such as depot to manage software
-packages, or users building binary packages for distribution may also
-wish to install perl into a different directory and use that
-management software to move perl to its final destination. This
-section describes how to do that.
+However, sites that use package management software such as rpm or
+dpkg, or users building binary packages for distribution may also
+wish to install perl into a different directory before moving perl
+to its final destination. There are two ways to do that:
+
+=over 4
+
+=item installprefix
To install perl under the /tmp/perl5 directory, use the following
command line:
- sh Configure -Dinstallprefix=/tmp/perl5
+ sh Configure -Dinstallprefix=/tmp/perl5
(replace /tmp/perl5 by a directory of your choice).
Beware, though, that if you go to try to install new add-on
modules, they too will get installed in under '/tmp/perl5' if you
-follow this example. The next section shows one way of dealing with
-that problem.
+follow this example. That's why it's usually better to use DESTDIR,
+as shown in the next section.
-=head2 Creating an installable tar archive
+=item DESTDIR
If you need to install perl on many identical systems, it is convenient
to compile it once and create an archive that can be installed on
cd /tmp/perl5/opt/perl
tar cvf /tmp/perl5-archive.tar .
+=back
+
+=head2 Relocatable @INC
+
+To create a relocatable perl tree, use the following command line:
+
+ sh Configure -Duserelocatableinc
+
+Then the paths in @INC (and everything else in %Config) can be
+optionally located via the path of the perl executable.
+
+That means that, if the string ".../" is found at the start of any
+path, it's substituted with the directory of $^X. So, the relocation
+can be configured on a per-directory basis, although the default with
+"-Duserelocatableinc" is that everything is relocated. The initial
+install is done to the original configured prefix.
+
+This option is not compatible with the building of a shared libperl
+("-Duseshrplib"), because in that case perl is linked with an hard-coded
+rpath that points at the libperl.so, that cannot be relocated.
+
=head2 Site-wide Policy settings
After Configure runs, it stores a number of common site-wide "policy"
-answers (such as installation directories and the local perl contact
-person) in the Policy.sh file. If you want to build perl on another
-system using the same policy defaults, simply copy the Policy.sh file
-to the new system and Configure will use it along with the appropriate
-hint file for your system. This will work even if Policy.sh was
+answers (such as installation directories) in the Policy.sh file.
+If you want to build perl on another system using the same policy
+defaults, simply copy the Policy.sh file to the new system's perl build
+directory, and Configure will use it. This will work even if Policy.sh was
generated for another version of Perl, or on a system with a
different architecture and/or operating system. However, in such cases,
you should review the contents of the file before using it: for
=head2 Disabling older versions of Perl
Configure will search for binary compatible versions of previously
-installed perl binaries in the tree that is specified as target tree
-and these will be used by the perl being built.
-See L<"Coexistence with earlier versions of perl5"> for more details.
+installed perl binaries in the tree that is specified as target tree,
+and these will be used as locations to search for modules by the perl
+being built. The list of perl versions found will be put in the Configure
+variable inc_version_list.
To disable this use of older perl modules, even completely valid pure perl
modules, you can specify to not include the paths found:
sh Configure -Dinc_version_list=none ...
+If you do want to use modules from some previous perl versions, the variable
+must contain a space separated list of directories under the site_perl
+directory, and has to include architecture-dependent directories separately,
+eg.
+
+ sh Configure -Dinc_version_list="5.15.7/x86_64-linux 5.14.0" ...
+
When using the newer perl, you can add these paths again in the
-$PERL5LIB environment variable or with perl's -I runtime option.
+PERL5LIB environment variable or with perl's -I runtime option.
=head2 Building Perl outside of the source directory
unaffected. After Configure has finished you can just say
make
+ make test
+ make install
as usual, and Perl will be built in /tmp/perl/build/directory.
B<perl -d your_script>. If, however, you want to debug perl itself,
you probably want to have support for perl internal debugging code
(activated by adding -DDEBUGGING to ccflags), and/or support for the
-system debugger by adding -g to optimize.
+system debugger by adding -g to the optimisation flags. For that,
+use the parameter:
sh Configure -DDEBUGGING
for -DDEBUGGING. For both, the -U calls are also supported, in order
to be able to overrule the hints or Policy.sh settings.
-=over 4
-
-=item -DEBUGGING=old
+Here are the DEBUGGING modes:
-Which is the default, and supports the old convention of
-
- sh Configure -Doptimize='-g'
-
-This will do two independent things: First, it will force compilation
-to use cc -g so that you can use your system's debugger on the
-executable. (Note: Your system may actually require something like
-cc -g2. Check your man pages for cc(1) and also any hint file for
-your system.) Second, it will add -DDEBUGGING to your ccflags
-variable in config.sh so that you can use B<perl -D> to access perl's
-internal state. (Note: Configure will only add -DDEBUGGING by default
-if you are not reusing your old config.sh. If you want to reuse your
-old config.sh, then you can just edit it and change the optimize and
-ccflags variables by hand and then propagate your changes as shown in
-L<"Propagating your changes to config.sh"> below.)
-
-You can actually specify -g and -DDEBUGGING independently, but usually
-it's convenient to have both.
+=over 4
=item -DDEBUGGING
=item -DEBUGGING=both
-Sets both -DDEBUGGING in the ccflags, and add -g to optimize.
+Sets both -DDEBUGGING in the ccflags, and adds -g to optimize.
+
+You can actually specify -g and -DDEBUGGING independently (see below),
+but usually it's convenient to have both.
=item -DEBUGGING=-g
+=item -Doptimize=-g
+
Adds -g to optimize, but does not set -DDEBUGGING.
+(Note: Your system may actually require something like cc -g2.
+Check your man pages for cc(1) and also any hint file for your system.)
+
=item -DEBUGGING=none
+=item -UDEBUGGING
+
Removes -g from optimize, and -DDEBUGGING from ccflags.
=back
If you are using a shared libperl, see the warnings about multiple
versions of perl under L<Building a shared Perl library>.
+Note that a perl built with -DDEBUGGING will be bigger and will run more
+slowly than a standard perl.
+
+=head2 DTrace support
+
+On platforms where DTrace is available, it may be enabled by
+using the -Dusedtrace option to Configure. DTrace probes are available for
+subroutine entry (sub-entry) and subroutine exit (sub-exit). Here's a
+simple D script that uses them:
+
+ perl$target:::sub-entry, perl$target:::sub-return {
+ printf("%s %s (%s:%d)\n", probename == "sub-entry" ? "->" : "<-",
+ copyinstr(arg0), copyinstr(arg1), arg2);
+ }
+
+
=head2 Extensions
Perl ships with a number of standard extensions. These are contained
By default, Configure will offer to build every extension which appears
to be supported. For example, Configure will offer to build GDBM_File
-only if it is able to find the gdbm library. (See examples below.)
-Configure does not contain code to test for POSIX compliance, so POSIX
-is always built by default. If you wish to skip POSIX, you can
-set the Configure variable useposix=false from the Configure command line.
-
-If you unpack any additional extensions in the ext/ directory before
-running Configure, then Configure will offer to build those additional
-extensions as well. Most users probably shouldn't have to do this --
-it is usually easier to build additional extensions later after perl
-has been installed. However, if you wish to have those additional
-extensions statically linked into the perl binary, then this offers a
-convenient way to do that in one step. (It is not necessary, however;
-you can build and install extensions just fine even if you don't have
-dynamic loading. See lib/ExtUtils/MakeMaker.pm for more details.)
-
-If you have dynamic loading, another way of specifying extra modules
-is described in L<"Adding extra modules to the build"> below.
-
-You can learn more about each of the supplied extensions by consulting the
-documentation in the individual .pm modules, located under the
-ext/ subdirectory.
-
-Even if you do not have dynamic loading, you must still build the
-DynaLoader extension; you should just build the stub dl_none.xs
-version. Configure will suggest this as the default.
+only if it is able to find the gdbm library.
To disable certain extensions so that they are not built, use the
-Dnoextensions=... and -Donlyextensions=... options. They both accept
-a space-separated list of extensions. The extensions listed in
+a space-separated list of extensions, such as C<IPC/SysV>. The extensions
+listed in
C<noextensions> are removed from the list of extensions to build, while
the C<onlyextensions> is rather more severe and builds only the listed
extensions. The latter should be used with extreme caution since
Of course, you may always run Configure interactively and select only
the extensions you want.
-Note: The DB_File module will only work with version 1.x of Berkeley
-DB or newer releases of version 2. Configure will automatically detect
-this for you and refuse to try to build DB_File with earlier
-releases of version 2.
+If you unpack any additional extensions in the ext/ directory before
+running Configure, then Configure will offer to build those additional
+extensions as well. Most users probably shouldn't have to do this --
+it is usually easier to build additional extensions later after perl
+has been installed. However, if you wish to have those additional
+extensions statically linked into the perl binary, then this offers a
+convenient way to do that in one step. (It is not necessary, however;
+you can build and install extensions just fine even if you don't have
+dynamic loading. See lib/ExtUtils/MakeMaker.pm for more details.)
+Another way of specifying extra modules is described in
+L<"Adding extra modules to the build"> below.
If you re-use an old config.sh but change your system (e.g. by
adding libgdbm) Configure will still offer your old choices of extensions
for the default answer, but it will also point out the discrepancy to
you.
-Finally, if you have dynamic loading (most modern systems do)
-remember that these extensions do not increase the size of your perl
-executable, nor do they impact start-up time, so you probably might as
-well build all the ones that will work on your system.
-
=head2 Including locally-installed libraries
-Perl5 comes with interfaces to number of database extensions, including
-dbm, ndbm, gdbm, and Berkeley db. For each extension, if
+Perl comes with interfaces to number of libraries, including threads,
+dbm, ndbm, gdbm, and Berkeley db. For the *db* extension, if
Configure can find the appropriate header files and libraries, it will
-automatically include that extension. The gdbm and db libraries
-are not included with perl. See the library documentation for
-how to obtain the libraries.
-
-If your database header (.h) files are not in a directory normally
-searched by your C compiler, then you will need to include the
-appropriate -I/your/directory option when prompted by Configure. If
-your database libraries are not in a directory normally
-searched by your C compiler and linker, then you will need to include
-the appropriate -L/your/directory option when prompted by Configure.
-See the examples below.
+automatically include that extension. The threading extension needs
+to be specified explicitly (see L</Threads>).
+
+Those libraries are not distributed with perl. If your header (.h) files
+for those libraries are not in a directory normally searched by your C
+compiler, then you will need to include the appropriate -I/your/directory
+option when prompted by Configure. If your libraries are not in a
+directory normally searched by your C compiler and linker, then you will
+need to include the appropriate -L/your/directory option when prompted
+by Configure. See the examples below.
=head3 Examples
necessary steps out automatically.
Specifically, when Configure prompts you for flags for
-your C compiler, you should include -I/usr/local/include.
-
-When Configure prompts you for linker flags, you should include
--L/usr/local/lib.
+your C compiler, you should include -I/usr/local/include, if it's
+not here yet. Similarly, when Configure prompts you for linker flags,
+you should include -L/usr/local/lib.
If you are using dynamic loading, then when Configure prompts you for
linker flags for dynamic loading, you should again include
you have gdbm installed in any of (/usr/local, /opt/local, /usr/gnu,
/opt/gnu, /usr/GNU, or /opt/GNU).
-=item gdbm in /usr/you
+=item BerkeleyDB in /usr/local/BerkeleyDB
-Suppose you have gdbm installed in some place other than /usr/local/,
-but you still want Configure to find it. To be specific, assume you
-have /usr/you/include/gdbm.h and /usr/you/lib/libgdbm.a. You
-still have to add -I/usr/you/include to cc flags, but you have to take
-an extra step to help Configure find libgdbm.a. Specifically, when
-Configure prompts you for library directories, you have to add
-/usr/you/lib to the list.
+The version of BerkeleyDB distributed by Oracle installs in a
+version-specific directory by default, typically something like
+/usr/local/BerkeleyDB.4.7. To have Configure find that, you need to add
+-I/usr/local/BerkeleyDB.4.7/include to cc flags, as in the previous example,
+and you will also have to take extra steps to help Configure find -ldb.
+Specifically, when Configure prompts you for library directories,
+add /usr/local/BerkeleyDB.4.7/lib to the list. Also, you will need to
+add appropriate linker flags to tell the runtime linker where to find the
+BerkeleyDB shared libraries.
-It is possible to specify this from the command line too (all on one
+It is possible to specify this from the command line (all on one
line):
- sh Configure -de \
- -Dlocincpth="/usr/you/include" \
- -Dloclibpth="/usr/you/lib"
+ sh Configure -de \
+ -Dlocincpth='/usr/local/BerkeleyDB.4.7/include /usr/local/include' \
+ -Dloclibpth='/usr/local/BerkeleyDB.4.7/lib /usr/local/lib' \
+ -Aldflags='-R/usr/local/BerkeleyDB.4.7/lib'
locincpth is a space-separated list of include directories to search.
Configure will automatically add the appropriate -I directives.
loclibpth is a space-separated list of library directories to search.
-Configure will automatically add the appropriate -L directives. If
-you have some libraries under /usr/local/ and others under
-/usr/you, then you have to include both, namely
+Configure will automatically add the appropriate -L directives.
- sh Configure -de \
- -Dlocincpth="/usr/you/include /usr/local/include" \
- -Dloclibpth="/usr/you/lib /usr/local/lib"
+The addition to ldflags is so that the dynamic linker knows where to find
+the BerkeleyDB libraries. For Linux and Solaris, the -R option does that.
+Other systems may use different flags. Use the appropriate flag for your
+system.
=back
-=head2 Building DB, NDBM, and ODBM interfaces with Berkeley DB 3
-
-A Perl interface for DB3 is part of Berkeley DB, but if you want to
-compile the standard Perl DB/ODBM/NDBM interfaces, you must follow
-following instructions.
-
-Berkeley DB3 from Sleepycat Software is by default installed without
-DB1 compatibility code (needed for the DB_File interface) and without
-links to compatibility files. So if you want to use packages written
-for the DB/ODBM/NDBM interfaces, you need to configure DB3 with
---enable-compat185 (and optionally with --enable-dump185) and create
-additional references (suppose you are installing DB3 with
---prefix=/usr):
-
- ln -s libdb-3.so /usr/lib/libdbm.so
- ln -s libdb-3.so /usr/lib/libndbm.so
- echo '#define DB_DBM_HSEARCH 1' >dbm.h
- echo '#include <db.h>' >>dbm.h
- install -m 0644 dbm.h /usr/include/dbm.h
- install -m 0644 dbm.h /usr/include/ndbm.h
-
-Optionally, if you have compiled with --enable-compat185 (not needed
-for ODBM/NDBM):
-
- ln -s libdb-3.so /usr/lib/libdb1.so
- ln -s libdb-3.so /usr/lib/libdb.so
-
-ODBM emulation seems not to be perfect, but is quite usable,
-using DB 3.1.17:
-
- lib/odbm.............FAILED at test 9
- Failed 1/64 tests, 98.44% okay
-
=head2 Overriding an old config.sh
If you want to use an old config.sh produced by a previous run of
(The file is called configure.gnu to avoid problems on systems
that would not distinguish the files "Configure" and "configure".)
-See L<Cross-compilation> below for information on cross-compiling.
-
=head2 Malloc Issues
Perl relies heavily on malloc(3) to grow data structures as needed,
or you can answer 'n' at the appropriate interactive Configure prompt.
+Note that Perl's malloc isn't always used by default; that actually
+depends on your system. For example, on Linux and FreeBSD (and many more
+systems), Configure chooses to use the system's malloc by default.
+See the appropriate file in the F<hints/> directory to see how the
+default is set.
+
=item -DPERL_POLLUTE_MALLOC
NOTE: This flag is enabled automatically on some platforms if you just
-run Configure to accept all the defaults on those platforms.
+run Configure to accept all the defaults.
Perl's malloc family of functions are normally called Perl_malloc(),
Perl_realloc(), Perl_calloc() and Perl_mfree().
Devel::Peek::mstat() function. You cannot enable this unless you are
using Perl's malloc, so a typical Configure command would be
- sh Configure -Accflags=-DPERL_DEBUGGING_MSTATS -Dusemymalloc='y'
+ sh Configure -Accflags=-DPERL_DEBUGGING_MSTATS -Dusemymalloc
to enable this option.
Note that any hint file is read before any Policy file, meaning that
Policy overrides hints -- see L</Site-wide Policy settings>.
-=item *** WHOA THERE!!! ***
+=item WHOA THERE!!!
If you are re-using an old config.sh, it's possible that Configure detects
different values from the ones specified in this file. You will almost
=item config.over and config.arch
-You can also supply a shell script config.over to over-ride
+You can also supply a shell script config.over to override
Configure's guesses. It will get loaded up at the very end, just
before config.sh is created. You have to be careful with this,
however, as Configure does no checking that your changes make sense.
line, they can be made in cflags.SH. For instance, to turn off the
optimizer on toke.c, find the line in the switch structure for
toke.c and put the command optimize='-g' before the ;; . You
-can also edit cflags directly, but beware that your changes will be
+can also edit cflags.SH directly, but beware that your changes will be
lost the next time you run Configure.
To explore various ways of changing ccflags from within a hint file,
If you plan to port Perl to a new architecture, study carefully the
section titled "Philosophical Issues in Patching and Porting Perl"
-in the file Porting/pumpkin.pod and the file Porting/patching.pod.
+in the file Porting/pumpkin.pod and the file pod/perlgit.pod.
Study also how other non-UNIX ports have solved problems.
=back
=head2 suidperl
-suidperl is an optional component, which is normally neither built
-nor installed by default. From perlfaq1:
-
- On some systems, setuid and setgid scripts (scripts written
- in the C shell, Bourne shell, or Perl, for example, with the
- set user or group ID permissions enabled) are insecure due to
- a race condition in the kernel. For those systems, Perl versions
- 5 and 4 attempt to work around this vulnerability with an optional
- component, a special program named suidperl, also known as sperl.
- This program attempts to emulate the set-user-ID and set-group-ID
- features of the kernel.
-
-Because of the buggy history of suidperl, and the difficulty
-of properly security auditing as large and complex piece of
-software as Perl, we cannot recommend using suidperl and the feature
-should be considered deprecated.
-
-Instead, use a tool specifically designed to handle changes in
-privileges, such as B<sudo>.
+suidperl was an optional component of earlier releases of perl. It is no
+longer available. Instead, use a tool specifically designed to handle
+changes in privileges, such as B<sudo>.
=head1 make depend
=head2 Expected errors
-These errors are normal, and can be ignored:
+These error reports are normal, and can be ignored:
...
make: [extra.pods] Error 1 (ignored)
at Perl startup.
+=item other environment variables
+
+Configure does not check for environment variables that can sometimes
+have a major influence on how perl is built or tested. For example,
+OBJECT_MODE on AIX determines the way the compiler and linker deal with
+their objects, but this is a variable that only influences build-time
+behaviour, and should not affect the perl scripts that are eventually
+executed by the perl binary. Other variables, like PERL_UNICODE,
+PERL5LIB, and PERL5OPT will influence the behaviour of the test suite.
+So if you are getting strange test failures, you may want to try
+retesting with the various PERL variables unset.
+
=item varargs
If you get varargs problems with gcc, be sure that gcc is installed
If you get error messages such as the following (the exact line
numbers and function name may vary in different versions of perl):
- util.c: In function `Perl_form':
+ util.c: In function 'Perl_form':
util.c:1107: number of arguments doesn't match prototype
proto.h:125: prototype declaration
the LD_LIBRARY_PATH environment variable. If you're creating a static
Perl library (libperl.a rather than libperl.so) it should build
fine with LD_LIBRARY_PATH unset, though that may depend on details
-of your local set-up.
+of your local setup.
=item nm extraction
with BIND 8.1 or rename /usr/local/bin/arpa/inet.h during the Perl build and
test process to avoid the problem.
-=item *_r() prototype NOT found
+=item .*_r() prototype NOT found
On a related note, if you see a bunch of complaints like the above about
-reentrant functions - specifically networking-related ones - being present
+reentrant functions -- specifically networking-related ones -- being present
but without prototypes available, check to see if BIND 8.1 (or possibly
other BIND 8 versions) is (or has been) installed. They install
header files such as netdb.h into places such as /usr/local/include (or into
If the libs variable looks correct, you might have the
L<"nm extraction"> problem discussed above.
-If you stil have missing routines or undefined symbols, you probably
+If you still have missing routines or undefined symbols, you probably
need to add some library or other, or you need to undefine some feature
that Configure thought was there but is defective or incomplete. If
you used a hint file, see if it has any relevant advice. You can also
Some compilers will not compile or optimize the larger files (such as
toke.c) without some extra switches to use larger jump offsets or
allocate larger internal tables. You can customize the switches for
-each file in cflags. It's okay to insert rules for specific files into
+each file in cflags.SH. It's okay to insert rules for specific files into
makefile since a default rule only takes effect in the absence of a
specific rule.
SCO prior to 3.2.4 may be missing dbmclose(). An upgrade to 3.2.4
that includes libdbm.nfs (which includes dbmclose()) may be available.
+=item error: too few arguments to function 'dbmclose'
+
+Building ODBM_File on some (Open)SUSE distributions might run into this
+error, as the header file is broken. There are two ways to deal with this
+
+ 1. Disable the use of ODBM_FILE
+
+ Configure ... -Dnoextensions=ODBM_File
+
+ 2. Fix the header file, somewhat like this:
+
+ --- a/usr/include/dbm.h 2010-03-24 08:54:59.000000000 +0100
+ +++ b/usr/include/dbm.h 2010-03-24 08:55:15.000000000 +0100
+ @@ -59,4 +59,4 @@ extern datum firstkey __P((void));
+
+ extern datum nextkey __P((datum key));
+
+ -extern int dbmclose __P((DBM *));
+ +extern int dbmclose __P((void));
+
=item Note (probably harmless): No library found for -lsomething
If you see such a message during the building of an extension, but
then don't worry about the warning message. The extension
Makefile.PL goes looking for various libraries needed on various
systems; few systems will need all the possible libraries listed.
-For example, a system may have -lcposix or -lposix, but it's
-unlikely to have both, so most users will see warnings for the one
-they don't have. The phrase 'probably harmless' is intended to
-reassure you that nothing unusual is happening, and the build
-process is continuing.
+Most users will see warnings for the ones they don't have. The
+phrase 'probably harmless' is intended to reassure you that nothing
+unusual is happening, and the build process is continuing.
On the other hand, if you are building GDBM_File and you get the
message
=item Miscellaneous
-Some additional things that have been reported for either perl4 or perl5:
+Some additional things that have been reported:
Genix may need to use libc rather than libc_s, or #undef VARARGS.
NCR Tower 32 (OS 2.01.01) may need -W2,-Sl,2000 and #undef MKDIR.
-UTS may need one or more of -K or -g, and undef LSTAT.
+UTS may need one or more of -K or -g, and #undef LSTAT.
FreeBSD can fail the ext/IPC/SysV/t/sem.t test if SysV IPC has not been
configured in the kernel. Perl tries to detect this, though, and
(using the rather large Unix-tool-dependent Configure script) is not
awfully well suited for cross-compilation. However, starting from
version 5.8.0, the Configure script also knows one way of supporting
-cross-compilation support, please keep reading.
+cross-compilation support, so please keep reading.
See the following files for more information about compiling Perl for
the particular platforms:
by hand to see if it makes any difference. If individual tests
bomb, you can run them by hand, e.g.,
- ./perl op/groups.t
+ ./perl -MTestInit t/op/groups.t
Another way to get more detailed information about failed tests and
individual subtests is to cd to the t directory and run
- ./perl harness
+ cd t ; ./perl harness <list of tests>
(this assumes that most basic tests succeed, since harness uses
-complicated constructs). For extension and library tests you
-need a little bit more: you need to setup your environment variable
-PERL_CORE to a true value (like "1"), and you need to supply the
-right Perl library path:
-
- setenv PERL_CORE 1
- ./perl -I../lib ../ext/Socket/Socket.t
- ./perl -I../lib ../lib/less.t
+complicated constructs). If no list of tests is provided, harness
+will run all tests.
-(For csh-like shells on UNIX; adjust appropriately for other platforms.)
You should also read the individual tests to see if there are any helpful
comments that apply to your system. You may also need to setup your
shared library path if you get errors like:
Note: One possible reason for errors is that some external programs
may be broken due to the combination of your environment and the way
-B<make test> exercises them. For example, this may happen if you have
+'make test' exercises them. For example, this may happen if you have
one or more of these environment variables set: LC_ALL LC_CTYPE
LC_COLLATE LANG. In some versions of UNIX, the non-English locales
are known to cause programs to exhibit mysterious errors.
these tests might fail. If possible, try running the tests again
with the system under a lighter load. These timing-sensitive
and load-sensitive tests include F<t/op/alarm.t>,
-F<ext/Time/HiRes/HiRes.t>, F<lib/Benchmark.t>,
+F<ext/Time-HiRes/t/HiRes.t>, F<ext/threads-shared/t/waithires.t>,
+F<ext/threads-shared/t/stress.t>, F<lib/Benchmark.t>,
F<lib/Memoize/t/expmod_t.t>, and F<lib/Memoize/t/speed.t>.
+You might also experience some failures in F<t/op/stat.t> if you build
+perl on an NFS filesystem, if the remote clock and the system clock are
+different.
+
=item Out of memory
On some systems, particularly those with smaller amounts of RAM, some
Try stopping other jobs on the system and then running the test by itself:
- cd t; ./perl op/pat.t
+ cd t; ./perl -MTestInit op/pat.t
to see if you have any better luck. If your perl still fails this
test, it does not necessarily mean you have a broken perl. This test
tries to exercise the regular expression subsystem quite thoroughly,
and may well be far more demanding than your normal usage.
+=item libgcc_s.so.1: cannot open shared object file
+
+This message has been reported on gcc-3.2.3 and earlier installed with
+a non-standard prefix. Setting the LD_LIBRARY_PATH environment variable
+(or equivalent) to include gcc's lib/ directory with the libgcc_s.so.1
+shared library should fix the problem.
+
=item Failures from lib/File/Temp/t/security saying "system possibly insecure"
First, such warnings are not necessarily serious or indicative of a
other than the user running the tests, or by root (uid 0).
This failure can happen if the Perl source code distribution is
-unpacked in such a way that the user ids in the distribution package
+unpacked in such a way that the user IDs in the distribution package
are used as-is. Some tar programs do this.
(2) If the directory the tests are being run in is writable by group or
=back
+The core distribution can now run its regression tests in parallel on
+Unix-like platforms. Instead of running C<make test>, set C<TEST_JOBS> in
+your environment to the number of tests to run in parallel, and run
+C<make test_harness>. On a Bourne-like shell, this can be done as
+
+ TEST_JOBS=3 make test_harness # Run 3 tests in parallel
+
+An environment variable is used, rather than parallel make itself, because
+L<TAP::Harness> needs to be able to schedule individual non-conflicting test
+scripts itself, and there is no standard interface to C<make> utilities to
+interact with their job schedulers.
+
=head1 make install
This will put perl into the public directory you specified to
are not root, you must still have permission to install into the directories
in question and you should ignore any messages about chown not working.
-If "make install" just says "`install' is up to date" or something
+If "make install" just says "'install' is up to date" or something
similar, you may be on a case-insensitive filesystems such as Mac's HFS+,
and you should say "make install-all". (This confusion is brought to you
by the Perl distribution having a file called INSTALL.)
make install DESTDIR=/tmp/perl5
DESTDIR is automatically prepended to all the installation paths. See
-the example in L<"Creating an installable tar archive"> above.
+the example in L<"DESTDIR"> above.
=head2 Installed files
perl,
perl5.n.n where 5.n.n is the current release number. This
will be a link to perl.
- suidperl,
- sperl5.n.n If you requested setuid emulation.
- a2p awk-to-perl translator
+ a2p awk-to-perl translator.
scripts
- cppstdin This is used by perl -P, if your cc -E can't
- read from stdin.
+ cppstdin This is used by the deprecated switch perl -P, if
+ your cc -E can't read from stdin.
c2ph, pstruct Scripts for handling C structures in header files.
- s2p sed-to-perl translator
- find2perl find-to-perl translator
- h2ph Extract constants and simple macros from C headers
+ config_data Manage Module::Build-like module configuration.
+ corelist Shows versions of modules that come with different
+ versions of perl.
+ cpan The CPAN shell.
+ cpan2dist The CPANPLUS distribution creator.
+ cpanp The CPANPLUS shell.
+ cpanp-run-perl A helper for cpanp.
+ enc2xs Encoding module generator.
+ find2perl find-to-perl translator.
+ h2ph Extract constants and simple macros from C headers.
h2xs Converts C .h header files to Perl extensions.
+ instmodsh A shell to examine installed modules.
+ libnetcfg Configure libnet.
perlbug Tool to report bugs in Perl.
perldoc Tool to read perl's pod documentation.
- pl2pm Convert Perl 4 .pl files to Perl 5 .pm modules
+ perlivp Perl Installation Verification Procedure.
+ piconv A Perl implementation of the encoding conversion
+ utility iconv.
+ pl2pm Convert Perl 4 .pl files to Perl 5 .pm modules.
pod2html, Converters from perl's pod documentation format
pod2latex, to other useful formats.
pod2man,
pod2text,
- pod2checker,
- pod2select,
pod2usage
- splain Describe Perl warnings and errors
- dprofpp Perl code profile post-processor
+ podchecker POD syntax checker.
+ podselect Prints sections of POD documentation.
+ prove A command-line tool for running tests.
+ psed A Perl implementation of sed.
+ ptar A Perl implementation of tar.
+ ptardiff A diff for tar archives.
+ ptargrep A grep for tar archives.
+ s2p sed-to-perl translator.
+ shasum A tool to print or check SHA checksums.
+ splain Describe Perl warnings and errors.
+ xsubpp Compiler to convert Perl XS code into C code.
+ zipdetails display the internal structure of zip files
library files
pages in $man3dir, usually /usr/local/man/man3.
pod/*.pod in $privlib/pod/.
-Installperl will also create the directories listed above
+installperl will also create the directories listed above
in L<"Installation Directories">.
Perl's *.h header files and the libperl library are also installed
optional Perl compiler, or embed the perl interpreter into another
program even if the Perl source is no longer available.
+=head2 Installing only version-specific parts
+
Sometimes you only want to install the version-specific parts of the perl
installation. For example, you may wish to install a newer version of
-perl alongside an already installed production version of perl without
+perl alongside an already installed production version without
disabling installation of new modules for the production version.
To only install the version-specific parts of the perl installation, run
./perl installperl -v
and skip installman altogether.
+
See also L<"Maintaining completely separate versions"> for another
approach.
+=head1 cd /usr/include; h2ph *.h sys/*.h
+
+Some perl scripts need to be able to obtain information from the
+system header files. This command will convert the most commonly used
+header files in /usr/include into files that can be easily interpreted
+by perl. These files will be placed in the architecture-dependent
+library ($archlib) directory you specified to Configure.
+
+Note: Due to differences in the C and perl languages, the conversion
+of the header files is not perfect. You will probably have to
+hand-edit some of the converted files to get them to parse correctly.
+For example, h2ph breaks spectacularly on type casting and certain
+structures.
+
+=head1 installhtml --help
+
+Some sites may wish to make perl documentation available in HTML
+format. The installhtml utility can be used to convert pod
+documentation into linked HTML files and install them.
+
+Currently, the supplied ./installhtml script does not make use of the
+html Configure variables. This should be fixed in a future release.
+
+The following command-line is an example of one used to convert
+perl documentation:
+
+ ./installhtml \
+ --podroot=. \
+ --podpath=lib:ext:pod:vms \
+ --recurse \
+ --htmldir=/perl/nmanual \
+ --htmlroot=/perl/nmanual \
+ --splithead=pod/perlipc \
+ --splititem=pod/perlfunc \
+ --verbose
+
+See the documentation in installhtml for more details. It can take
+many minutes to execute a large installation and you should expect to
+see warnings like "no title", "unexpected directive" and "cannot
+resolve" as the files are processed. We are aware of these problems
+(and would welcome patches for them).
+
+You may find it helpful to run installhtml twice. That should reduce
+the number of "cannot resolve" warnings.
+
+=head1 cd pod && make tex && (process the latex files)
+
+Some sites may also wish to make the documentation in the pod/ directory
+available in TeX format. Type
+
+ (cd pod && make tex && <process the latex files>)
+
+=head1 Starting all over again
+
+If you wish to rebuild perl from the same build directory, you should
+clean it out with the command
+
+ make distclean
+
+or
+
+ make realclean
+
+The only difference between the two is that make distclean also removes
+your old config.sh and Policy.sh files.
+
+If you are upgrading from a previous version of perl, or if you
+change systems or compilers or make other significant changes, or if
+you are experiencing difficulties building perl, you should not reuse
+your old config.sh.
+
+If your reason to reuse your old config.sh is to save your particular
+installation choices, then you can probably achieve the same effect by
+using the Policy.sh file. See the section on L<"Site-wide Policy
+settings"> above.
+
=head1 Reporting Problems
Wherever possible please use the perlbug tool supplied with this Perl
If Configure itself fails, and does not generate a config.sh file
(needed to run C<./myconfig>), then please mail perlbug@perl.org the
description of how Configure fails along with details of your system
-- for example the output from running C<uname -a>
+-- for example the output from running C<uname -a>
Please try to make your message brief but clear. Brief, clear bug
reports tend to get answered more quickly. Please don't worry if your
-written English is not great - what matters is how well you describe
+written English is not great -- what matters is how well you describe
the important technical details of the problem you have encountered,
not whether your grammar and spelling is flawless.
necessary. Do not include a complete transcript of your build
session. Just include the failing commands, the relevant error
messages, and whatever preceding commands are necessary to give the
-appropriate context. Plain text should usually be sufficient--fancy
+appropriate context. Plain text should usually be sufficient -- fancy
attachments or encodings may actually reduce the number of people who
read your message. Your message will get relayed to over 400
subscribers around the world so please try to keep it brief but clear.
+If the bug you are reporting has security implications, which make it
+inappropriate to send to a publicly archived mailing list, then please send
+it to perl5-security-report@perl.org. This points to a closed subscription
+unarchived mailing list, which includes all the core committers, who be able
+to help assess the impact of issues, figure out a resolution, and help
+co-ordinate the release of patches to mitigate or fix the problem across all
+platforms on which Perl is supported. Please only use this address for security
+issues in the Perl core, not for modules independently distributed on CPAN.
+
If you are unsure what makes a good bug report please read "How to
report Bugs Effectively" by Simon Tatham:
http://www.chiark.greenend.org.uk/~sgtatham/bugs.html
-=head1 Coexistence with earlier versions of perl5
+=head1 Coexistence with earlier versions of perl 5
-Perl 5.10 is not binary compatible with earlier versions of Perl.
+Perl 5.15 is not binary compatible with earlier versions of Perl.
In other words, you will have to recompile your XS modules.
In general, you can usually safely upgrade from one version of Perl (e.g.
-5.8.0) to another similar version (e.g. 5.8.2) without re-compiling
-all of your add-on extensions. You can also safely leave the old version
-around in case the new version causes you problems for some reason.
-For example, if you want to be sure that your script continues to run
-with 5.8.2, simply replace the '#!/usr/local/bin/perl' line at the
-top of the script with the particular version you want to run, e.g.
-#!/usr/local/bin/perl5.8.2.
+5.X.Y) to another similar minor version (e.g. 5.X.(Y+1))) without
+re-compiling all of your extensions. You can also safely leave the old
+version around in case the new version causes you problems for some reason.
Usually, most extensions will probably not need to be recompiled to be
used with a newer version of Perl. Here is how it is supposed to work.
(These examples assume you accept all the Configure defaults.)
-Suppose you already have version 5.005_03 installed. The directories
-searched by 5.005_03 are
+Suppose you already have version 5.8.7 installed. The directories
+searched by 5.8.7 are typically like:
- /usr/local/lib/perl5/5.00503/$archname
- /usr/local/lib/perl5/5.00503
- /usr/local/lib/perl5/site_perl/5.005/$archname
- /usr/local/lib/perl5/site_perl/5.005
+ /usr/local/lib/perl5/5.8.7/$archname
+ /usr/local/lib/perl5/5.8.7
+ /usr/local/lib/perl5/site_perl/5.8.7/$archname
+ /usr/local/lib/perl5/site_perl/5.8.7
-Beginning with 5.6.0 the version number in the site libraries are
-fully versioned. Now, suppose you install version 5.6.0. The directories
-searched by version 5.6.0 will be
+Now, suppose you install version 5.8.8. The directories
+searched by version 5.8.8 will be:
- /usr/local/lib/perl5/5.6.0/$archname
- /usr/local/lib/perl5/5.6.0
- /usr/local/lib/perl5/site_perl/5.6.0/$archname
- /usr/local/lib/perl5/site_perl/5.6.0
+ /usr/local/lib/perl5/5.8.8/$archname
+ /usr/local/lib/perl5/5.8.8
+ /usr/local/lib/perl5/site_perl/5.8.8/$archname
+ /usr/local/lib/perl5/site_perl/5.8.8
- /usr/local/lib/perl5/site_perl/5.005/$archname
- /usr/local/lib/perl5/site_perl/5.005
+ /usr/local/lib/perl5/site_perl/5.8.7/$archname
+ /usr/local/lib/perl5/site_perl/5.8.7
/usr/local/lib/perl5/site_perl/
Notice the last three entries -- Perl understands the default structure
of the $sitelib directories and will look back in older, compatible
-directories. This way, modules installed under 5.005_03 will continue
-to be usable by 5.005_03 but will also accessible to 5.6.0. Further,
+directories. This way, modules installed under 5.8.7 will continue
+to be usable by 5.8.7 but will also accessible to 5.8.8. Further,
suppose that you upgrade a module to one which requires features
-present only in 5.6.0. That new module will get installed into
-/usr/local/lib/perl5/site_perl/5.6.0 and will be available to 5.6.0,
-but will not interfere with the 5.005_03 version.
+present only in 5.8.8. That new module will get installed into
+/usr/local/lib/perl5/site_perl/5.8.8 and will be available to 5.8.8,
+but will not interfere with the 5.8.7 version.
The last entry, /usr/local/lib/perl5/site_perl/, is there so that
5.6.0 and above will look for 5.004-era pure perl modules.
-Lastly, suppose you now install 5.8.0, which is not binary compatible
-with 5.6.0. The directories searched by 5.8.0 (if you don't change the
+Lastly, suppose you now install 5.10.0, which is not binary compatible
+with 5.8.x. The directories searched by 5.10.0 (if you don't change the
Configure defaults) will be:
- /usr/local/lib/perl5/5.8.0/$archname
- /usr/local/lib/perl5/5.8.0
- /usr/local/lib/perl5/site_perl/5.8.0/$archname
- /usr/local/lib/perl5/site_perl/5.8.0
+ /usr/local/lib/perl5/5.10.0/$archname
+ /usr/local/lib/perl5/5.10.0
+ /usr/local/lib/perl5/site_perl/5.10.0/$archname
+ /usr/local/lib/perl5/site_perl/5.10.0
- /usr/local/lib/perl5/site_perl/5.6.0
+ /usr/local/lib/perl5/site_perl/5.8.8
- /usr/local/lib/perl5/site_perl/5.005
+ /usr/local/lib/perl5/site_perl/5.8.7
/usr/local/lib/perl5/site_perl/
Note that the earlier $archname entries are now gone, but pure perl
modules from earlier versions will still be found.
-Assuming the users in your site are still actively using perl 5.6.0 and
-5.005 after you installed 5.8.0, you can continue to install add-on
-extensions using any of perl 5.8.0, 5.6.0, or 5.005. The installations
-of these different versions remain distinct, but remember that the
-newer versions of perl are automatically set up to search the
-compatible site libraries of the older ones. This means that
-installing a new XS extension with 5.005 will make it visible to both
-5.005 and 5.6.0, but not to 5.8.0. Installing a pure perl module with
-5.005 will make it visible to all three versions. Later, if you
-install the same extension using, say, perl 5.8.0, it will override the
-5.005-installed version, but only for perl 5.8.0.
-
This way, you can choose to share compatible extensions, but also upgrade
to a newer version of an extension that may be incompatible with earlier
versions, without breaking the earlier versions' installations.
libraries after 5.6.0, but not for executables. TODO?) One convenient
way to do this is by using a separate prefix for each version, such as
- sh Configure -Dprefix=/opt/perl5.8.2
+ sh Configure -Dprefix=/opt/perl5.15.7
-and adding /opt/perl5.8.2/bin to the shell PATH variable. Such users
+and adding /opt/perl5.15.7/bin to the shell PATH variable. Such users
may also wish to add a symbolic link /usr/local/bin/perl so that
scripts can still start with #!/usr/local/bin/perl.
Others might share a common directory for maintenance sub-versions
-(e.g. 5.8 for all 5.8.x versions), but change directory with
+(e.g. 5.10 for all 5.10.x versions), but change directory with
each major version.
If you are installing a development subversion, you probably ought to
subversions may not have all the compatibility wrinkles ironed out
yet.
-=head2 Upgrading from 5.8.x or earlier
+=head2 Upgrading from 5.15.6 or earlier
-B<Perl 5.10.0 is binary incompatible with Perl 5.8.x and any earlier
+B<Perl 5.15.7 is binary incompatible with Perl 5.15.6 and any earlier
Perl release.> Perl modules having binary parts
(meaning that a C compiler is used) will have to be recompiled to be
-used with 5.10.0. If you find you do need to rebuild an extension with
-5.10.0, you may safely do so without disturbing the older
-installations. (See L<"Coexistence with earlier versions of perl5">
+used with 5.15.7. If you find you do need to rebuild an extension with
+5.15.7, you may safely do so without disturbing the older
+installations. (See L<"Coexistence with earlier versions of perl 5">
above.)
See your installed copy of the perllocal.pod file for a (possibly
incomplete) list of locally installed modules. Note that you want
perllocal.pod, not perllocale.pod, for installed module information.
-=head1 cd /usr/include; h2ph *.h sys/*.h
-
-Some perl scripts need to be able to obtain information from the
-system header files. This command will convert the most commonly used
-header files in /usr/include into files that can be easily interpreted
-by perl. These files will be placed in the architecture-dependent
-library ($archlib) directory you specified to Configure.
-
-Note: Due to differences in the C and perl languages, the conversion
-of the header files is not perfect. You will probably have to
-hand-edit some of the converted files to get them to parse correctly.
-For example, h2ph breaks spectacularly on type casting and certain
-structures.
-
-=head1 installhtml --help
-
-Some sites may wish to make perl documentation available in HTML
-format. The installhtml utility can be used to convert pod
-documentation into linked HTML files and install them.
-
-Currently, the supplied ./installhtml script does not make use of the
-html Configure variables. This should be fixed in a future release.
-
-The following command-line is an example of one used to convert
-perl documentation:
-
- ./installhtml \
- --podroot=. \
- --podpath=lib:ext:pod:vms \
- --recurse \
- --htmldir=/perl/nmanual \
- --htmlroot=/perl/nmanual \
- --splithead=pod/perlipc \
- --splititem=pod/perlfunc \
- --libpods=perlfunc:perlguts:perlvar:perlrun:perlop \
- --verbose
-
-See the documentation in installhtml for more details. It can take
-many minutes to execute a large installation and you should expect to
-see warnings like "no title", "unexpected directive" and "cannot
-resolve" as the files are processed. We are aware of these problems
-(and would welcome patches for them).
-
-You may find it helpful to run installhtml twice. That should reduce
-the number of "cannot resolve" warnings.
-
-=head1 cd pod && make tex && (process the latex files)
-
-Some sites may also wish to make the documentation in the pod/ directory
-available in TeX format. Type
-
- (cd pod && make tex && <process the latex files>)
-
-=head1 Starting all over again
-
-If you wish to re-build perl from the same build directory, you should
-clean it out with the command
-
- make distclean
-
-or
-
- make realclean
-
-The only difference between the two is that make distclean also removes
-your old config.sh and Policy.sh files.
-
-If you are upgrading from a previous version of perl, or if you
-change systems or compilers or make other significant changes, or if
-you are experiencing difficulties building perl, you should probably
-not re-use your old config.sh. Simply remove it:
-
- rm -f config.sh
-
-If you wish to re-use your old config.sh, be especially attentive to the
-version and architecture-specific questions and answers. For example,
-the default directory for architecture-dependent library modules
-includes the version name. By default, Configure will reuse your old
-name (e.g. /opt/perl/lib/i86pc-solaris/5.003) even if you're running
-Configure for a different version, e.g. 5.004. Similarly, if you used
-a shared libperl.so (see below) with version numbers, you will probably
-want to adjust them as well.
-
-Also, be careful to check your architecture name. For example, some
-Linux distributions use i386, but Configure uses the output of the arch
-command, which might be i686 instead. If you pick up a precompiled
-binary, or compile extensions on different systems, they might not all
-agree on the architecture name.
-
-In short, if you wish to use your old config.sh, I recommend running
-Configure interactively rather than blindly accepting the defaults.
-
-If your reason to reuse your old config.sh is to save your particular
-installation choices, then you can probably achieve the same effect by
-using the Policy.sh file. See the section on L<"Site-wide Policy
-settings"> above. If you wish to start with a fresh distribution, you
-also need to remove any old Policy.sh files you may have with
-
- rm -f Policy.sh
-
=head1 Minimizing the Perl installation
The following section is meant for people worrying about squeezing the
print("$f\n");
}
-in Linux is as follows (under $Config{prefix}):
+in Linux with perl-5.15.7 is as follows (under $Config{prefix}):
./bin/perl
- ./lib/perl5/5.9.3/strict.pm
- ./lib/perl5/5.9.3/warnings.pm
- ./lib/perl5/5.9.3/i686-linux/File/Glob.pm
- ./lib/perl5/5.9.3/i686-linux/XSLoader.pm
- ./lib/perl5/5.9.3/i686-linux/auto/File/Glob/Glob.so
+ ./lib/perl5/5.15.7/strict.pm
+ ./lib/perl5/5.15.7/warnings.pm
+ ./lib/perl5/5.15.7/i686-linux/File/Glob.pm
+ ./lib/perl5/5.15.7/feature.pm
+ ./lib/perl5/5.15.7/XSLoader.pm
+ ./lib/perl5/5.15.7/i686-linux/auto/File/Glob/Glob.so
-Secondly, Debian perl-base package contains the following files,
-size about 1.9MB in its i386 version:
+Secondly, for perl-5.10.1, the Debian perl-base package contains 591 files,
+(of which 510 are for lib/unicore) totaling about 3.5MB in its i386 version.
+Omitting the lib/unicore/* files for brevity, the remaining files are:
/usr/bin/perl
- /usr/bin/perl5.8.4
- /usr/lib/perl/5.8
- /usr/lib/perl/5.8.4/B.pm
- /usr/lib/perl/5.8.4/B/Deparse.pm
- /usr/lib/perl/5.8.4/Config.pm
- /usr/lib/perl/5.8.4/Cwd.pm
- /usr/lib/perl/5.8.4/Data/Dumper.pm
- /usr/lib/perl/5.8.4/DynaLoader.pm
- /usr/lib/perl/5.8.4/Errno.pm
- /usr/lib/perl/5.8.4/Fcntl.pm
- /usr/lib/perl/5.8.4/File/Glob.pm
- /usr/lib/perl/5.8.4/IO.pm
- /usr/lib/perl/5.8.4/IO/File.pm
- /usr/lib/perl/5.8.4/IO/Handle.pm
- /usr/lib/perl/5.8.4/IO/Pipe.pm
- /usr/lib/perl/5.8.4/IO/Seekable.pm
- /usr/lib/perl/5.8.4/IO/Select.pm
- /usr/lib/perl/5.8.4/IO/Socket.pm
- /usr/lib/perl/5.8.4/POSIX.pm
- /usr/lib/perl/5.8.4/Socket.pm
- /usr/lib/perl/5.8.4/XSLoader.pm
- /usr/lib/perl/5.8.4/auto/Cwd/Cwd.bs
- /usr/lib/perl/5.8.4/auto/Cwd/Cwd.so
- /usr/lib/perl/5.8.4/auto/Data/Dumper/Dumper.bs
- /usr/lib/perl/5.8.4/auto/Data/Dumper/Dumper.so
- /usr/lib/perl/5.8.4/auto/DynaLoader/DynaLoader.a
- /usr/lib/perl/5.8.4/auto/DynaLoader/autosplit.ix
- /usr/lib/perl/5.8.4/auto/DynaLoader/dl_expandspec.al
- /usr/lib/perl/5.8.4/auto/DynaLoader/dl_find_symbol_anywhere.al
- /usr/lib/perl/5.8.4/auto/DynaLoader/dl_findfile.al
- /usr/lib/perl/5.8.4/auto/DynaLoader/extralibs.ld
- /usr/lib/perl/5.8.4/auto/Fcntl/Fcntl.bs
- /usr/lib/perl/5.8.4/auto/Fcntl/Fcntl.so
- /usr/lib/perl/5.8.4/auto/File/Glob/Glob.bs
- /usr/lib/perl/5.8.4/auto/File/Glob/Glob.so
- /usr/lib/perl/5.8.4/auto/IO/IO.bs
- /usr/lib/perl/5.8.4/auto/IO/IO.so
- /usr/lib/perl/5.8.4/auto/POSIX/POSIX.bs
- /usr/lib/perl/5.8.4/auto/POSIX/POSIX.so
- /usr/lib/perl/5.8.4/auto/POSIX/autosplit.ix
- /usr/lib/perl/5.8.4/auto/POSIX/load_imports.al
- /usr/lib/perl/5.8.4/auto/Socket/Socket.bs
- /usr/lib/perl/5.8.4/auto/Socket/Socket.so
- /usr/lib/perl/5.8.4/lib.pm
- /usr/lib/perl/5.8.4/re.pm
- /usr/share/doc/perl-base
+ /usr/bin/perl5.10.1
+ /usr/lib/perl/5.10.1/Config.pm
+ /usr/lib/perl/5.10.1/Config_git.pl
+ /usr/lib/perl/5.10.1/Config_heavy.pl
+ /usr/lib/perl/5.10.1/Cwd.pm
+ /usr/lib/perl/5.10.1/DynaLoader.pm
+ /usr/lib/perl/5.10.1/Errno.pm
+ /usr/lib/perl/5.10.1/Fcntl.pm
+ /usr/lib/perl/5.10.1/File/Glob.pm
+ /usr/lib/perl/5.10.1/Hash/Util.pm
+ /usr/lib/perl/5.10.1/IO.pm
+ /usr/lib/perl/5.10.1/IO/File.pm
+ /usr/lib/perl/5.10.1/IO/Handle.pm
+ /usr/lib/perl/5.10.1/IO/Pipe.pm
+ /usr/lib/perl/5.10.1/IO/Seekable.pm
+ /usr/lib/perl/5.10.1/IO/Select.pm
+ /usr/lib/perl/5.10.1/IO/Socket.pm
+ /usr/lib/perl/5.10.1/IO/Socket/INET.pm
+ /usr/lib/perl/5.10.1/IO/Socket/UNIX.pm
+ /usr/lib/perl/5.10.1/List/Util.pm
+ /usr/lib/perl/5.10.1/POSIX.pm
+ /usr/lib/perl/5.10.1/Scalar/Util.pm
+ /usr/lib/perl/5.10.1/Socket.pm
+ /usr/lib/perl/5.10.1/XSLoader.pm
+ /usr/lib/perl/5.10.1/auto/Cwd/Cwd.so
+ /usr/lib/perl/5.10.1/auto/DynaLoader/autosplit.ix
+ /usr/lib/perl/5.10.1/auto/DynaLoader/dl_expandspec.al
+ /usr/lib/perl/5.10.1/auto/DynaLoader/dl_find_symbol_anywhere.al
+ /usr/lib/perl/5.10.1/auto/DynaLoader/dl_findfile.al
+ /usr/lib/perl/5.10.1/auto/Fcntl/Fcntl.so
+ /usr/lib/perl/5.10.1/auto/File/Glob/Glob.so
+ /usr/lib/perl/5.10.1/auto/Hash/Util/Util.so
+ /usr/lib/perl/5.10.1/auto/IO/IO.so
+ /usr/lib/perl/5.10.1/auto/List/Util/Util.so
+ /usr/lib/perl/5.10.1/auto/POSIX/POSIX.so
+ /usr/lib/perl/5.10.1/auto/POSIX/autosplit.ix
+ /usr/lib/perl/5.10.1/auto/POSIX/load_imports.al
+ /usr/lib/perl/5.10.1/auto/Socket/Socket.so
+ /usr/lib/perl/5.10.1/lib.pm
+ /usr/lib/perl/5.10.1/re.pm
/usr/share/doc/perl/AUTHORS.gz
/usr/share/doc/perl/Documentation
- /usr/share/doc/perl/README.Debian.gz
+ /usr/share/doc/perl/README.Debian
/usr/share/doc/perl/changelog.Debian.gz
/usr/share/doc/perl/copyright
+ /usr/share/lintian/overrides/perl-base
/usr/share/man/man1/perl.1.gz
- /usr/share/perl/5.8
- /usr/share/perl/5.8.4/AutoLoader.pm
- /usr/share/perl/5.8.4/Carp.pm
- /usr/share/perl/5.8.4/Carp/Heavy.pm
- /usr/share/perl/5.8.4/Exporter.pm
- /usr/share/perl/5.8.4/Exporter/Heavy.pm
- /usr/share/perl/5.8.4/File/Spec.pm
- /usr/share/perl/5.8.4/File/Spec/Unix.pm
- /usr/share/perl/5.8.4/FileHandle.pm
- /usr/share/perl/5.8.4/Getopt/Long.pm
- /usr/share/perl/5.8.4/IO/Socket/INET.pm
- /usr/share/perl/5.8.4/IO/Socket/UNIX.pm
- /usr/share/perl/5.8.4/IPC/Open2.pm
- /usr/share/perl/5.8.4/IPC/Open3.pm
- /usr/share/perl/5.8.4/List/Util.pm
- /usr/share/perl/5.8.4/Scalar/Util.pm
- /usr/share/perl/5.8.4/SelectSaver.pm
- /usr/share/perl/5.8.4/Symbol.pm
- /usr/share/perl/5.8.4/Text/ParseWords.pm
- /usr/share/perl/5.8.4/Text/Tabs.pm
- /usr/share/perl/5.8.4/Text/Wrap.pm
- /usr/share/perl/5.8.4/attributes.pm
- /usr/share/perl/5.8.4/base.pm
- /usr/share/perl/5.8.4/bytes.pm
- /usr/share/perl/5.8.4/bytes_heavy.pl
- /usr/share/perl/5.8.4/constant.pm
- /usr/share/perl/5.8.4/fields.pm
- /usr/share/perl/5.8.4/integer.pm
- /usr/share/perl/5.8.4/locale.pm
- /usr/share/perl/5.8.4/overload.pm
- /usr/share/perl/5.8.4/strict.pm
- /usr/share/perl/5.8.4/utf8.pm
- /usr/share/perl/5.8.4/utf8_heavy.pl
- /usr/share/perl/5.8.4/vars.pm
- /usr/share/perl/5.8.4/warnings.pm
- /usr/share/perl/5.8.4/warnings/register.pm
+ /usr/share/man/man1/perl5.10.1.1.gz
+ /usr/share/perl/5.10.1/AutoLoader.pm
+ /usr/share/perl/5.10.1/Carp.pm
+ /usr/share/perl/5.10.1/Carp/Heavy.pm
+ /usr/share/perl/5.10.1/Exporter.pm
+ /usr/share/perl/5.10.1/Exporter/Heavy.pm
+ /usr/share/perl/5.10.1/File/Spec.pm
+ /usr/share/perl/5.10.1/File/Spec/Unix.pm
+ /usr/share/perl/5.10.1/FileHandle.pm
+ /usr/share/perl/5.10.1/Getopt/Long.pm
+ /usr/share/perl/5.10.1/IPC/Open2.pm
+ /usr/share/perl/5.10.1/IPC/Open3.pm
+ /usr/share/perl/5.10.1/SelectSaver.pm
+ /usr/share/perl/5.10.1/Symbol.pm
+ /usr/share/perl/5.10.1/Text/ParseWords.pm
+ /usr/share/perl/5.10.1/Text/Tabs.pm
+ /usr/share/perl/5.10.1/Text/Wrap.pm
+ /usr/share/perl/5.10.1/Tie/Hash.pm
+ /usr/share/perl/5.10.1/attributes.pm
+ /usr/share/perl/5.10.1/base.pm
+ /usr/share/perl/5.10.1/bytes.pm
+ /usr/share/perl/5.10.1/bytes_heavy.pl
+ /usr/share/perl/5.10.1/constant.pm
+ /usr/share/perl/5.10.1/fields.pm
+ /usr/share/perl/5.10.1/integer.pm
+ /usr/share/perl/5.10.1/locale.pm
+ /usr/share/perl/5.10.1/overload.pm
+ /usr/share/perl/5.10.1/strict.pm
+ /usr/share/perl/5.10.1/unicore/*
+ /usr/share/perl/5.10.1/utf8.pm
+ /usr/share/perl/5.10.1/utf8_heavy.pl
+ /usr/share/perl/5.10.1/vars.pm
+ /usr/share/perl/5.10.1/warnings.pm
+ /usr/share/perl/5.10.1/warnings/register.pm
A nice trick to find out the minimal set of Perl library files you will
need to run a Perl program is
(The 'strace' is Linux-specific, other similar utilities include 'truss'
and 'ktrace'.)
+=head2 C<-DNO_MATHOMS>
+
+If you configure perl with C<-Accflags=-DNO_MATHOMS>, the functions from
+F<mathoms.c> will not be compiled in. Those functions are no longer used
+by perl itself; for source compatibility reasons, though, they weren't
+completely removed.
+
=head1 DOCUMENTATION
Read the manual entries before running perl. The main documentation
can type B<perldoc perl> to use the supplied perldoc script. This is
sometimes useful for finding things in the library modules.
-Under UNIX, you can produce a documentation book in postscript form,
-along with its table of contents, by going to the pod/ subdirectory and
-running (either):
-
- ./roffitall -groff # If you have GNU groff installed
- ./roffitall -psroff # If you have psroff
-
-This will leave you with two postscript files ready to be printed.
-(You may need to fix the roffitall command to use your local troff
-set-up.)
-
-Note that you must have performed the installation already before running
-the above, since the script collects the installed files to generate
-the documentation.
-
=head1 AUTHOR
Original author: Andy Dougherty doughera@lafayette.edu , borrowing very
https://perl5.git.perl.org / perl5.git / blobdiff