makemaker.pm

ARM上的如果你对底层感兴趣

  make testdb TESTDB_SW=-Dx

=head2 make install

make alone puts all relevant files into directories that are named by
the macros INST_LIB, INST_ARCHLIB, INST_SCRIPT, INST_MAN1DIR, and
INST_MAN3DIR. All these default to something below ./blib if you are
I<not> building below the perl source directory. If you I<are>
building below the perl source, INST_LIB and INST_ARCHLIB default to
 ../../lib, and INST_SCRIPT is not defined.

The I<install> target of the generated Makefile copies the files found
below each of the INST_* directories to their INSTALL*
counterparts. Which counterparts are chosen depends on the setting of
INSTALLDIRS according to the following table:

		       	   INSTALLDIRS set to
       	       	        perl   	          site

    INST_ARCHLIB    INSTALLARCHLIB    INSTALLSITEARCH
    INST_LIB        INSTALLPRIVLIB    INSTALLSITELIB
    INST_BIN                  INSTALLBIN
    INST_SCRIPT              INSTALLSCRIPT
    INST_MAN1DIR             INSTALLMAN1DIR
    INST_MAN3DIR             INSTALLMAN3DIR

The INSTALL... macros in turn default to their %Config
($Config{installprivlib}, $Config{installarchlib}, etc.) counterparts.

You can check the values of these variables on your system with

    perl '-V:install.*'

And to check the sequence in which the library directories are
searched by perl, run

    perl -le 'print join $/, @INC'


=head2 PREFIX and LIB attribute

PREFIX and LIB can be used to set several INSTALL* attributes in one
go. The quickest way to install a module in a non-standard place might
be

    perl Makefile.PL LIB=~/lib

This will install the module's architecture-independent files into
~/lib, the architecture-dependent files into ~/lib/$archname/auto.

Another way to specify many INSTALL directories with a single
parameter is PREFIX.

    perl Makefile.PL PREFIX=~

This will replace the string specified by $Config{prefix} in all
$Config{install*} values.

Note, that in both cases the tilde expansion is done by MakeMaker, not
by perl by default, nor by make. Conflicts between parmeters LIB,
PREFIX and the various INSTALL* arguments are resolved so that 
XXX

If the user has superuser privileges, and is not working on AFS
(Andrew File System) or relatives, then the defaults for
INSTALLPRIVLIB, INSTALLARCHLIB, INSTALLSCRIPT, etc. will be appropriate,
and this incantation will be the best:

    perl Makefile.PL; make; make test
    make install

make install per default writes some documentation of what has been
done into the file C<$(INSTALLARCHLIB)/perllocal.pod>. This feature
can be bypassed by calling make pure_install.

=head2 AFS users

will have to specify the installation directories as these most
probably have changed since perl itself has been installed. They will
have to do this by calling

    perl Makefile.PL INSTALLSITELIB=/afs/here/today \
	INSTALLSCRIPT=/afs/there/now INSTALLMAN3DIR=/afs/for/manpages
    make

Be careful to repeat this procedure every time you recompile an
extension, unless you are sure the AFS installation directories are
still valid.

=head2 Static Linking of a new Perl Binary

An extension that is built with the above steps is ready to use on
systems supporting dynamic loading. On systems that do not support
dynamic loading, any newly created extension has to be linked together
with the available resources. MakeMaker supports the linking process
by creating appropriate targets in the Makefile whenever an extension
is built. You can invoke the corresponding section of the makefile with

    make perl

That produces a new perl binary in the current directory with all
extensions linked in that can be found in INST_ARCHLIB , SITELIBEXP,
and PERL_ARCHLIB. To do that, MakeMaker writes a new Makefile, on
UNIX, this is called Makefile.aperl (may be system dependent). If you
want to force the creation of a new perl, it is recommended, that you
delete this Makefile.aperl, so the directories are searched-through
for linkable libraries again.

The binary can be installed into the directory where perl normally
resides on your machine with

    make inst_perl

To produce a perl binary with a different name than C<perl>, either say

    perl Makefile.PL MAP_TARGET=myperl
    make myperl
    make inst_perl

or say

    perl Makefile.PL
    make myperl MAP_TARGET=myperl
    make inst_perl MAP_TARGET=myperl

In any case you will be prompted with the correct invocation of the
C<inst_perl> target that installs the new binary into INSTALLBIN.

make inst_perl per default writes some documentation of what has been
done into the file C<$(INSTALLARCHLIB)/perllocal.pod>. This
can be bypassed by calling make pure_inst_perl.

Warning: the inst_perl: target will most probably overwrite your
existing perl binary. Use with care!

Sometimes you might want to build a statically linked perl although
your system supports dynamic loading. In this case you may explicitly
set the linktype with the invocation of the Makefile.PL or make:

    perl Makefile.PL LINKTYPE=static    # recommended

or

    make LINKTYPE=static                # works on most systems

=head2 Determination of Perl Library and Installation Locations

MakeMaker needs to know, or to guess, where certain things are
located.  Especially INST_LIB and INST_ARCHLIB (where to put the files
during the make(1) run), PERL_LIB and PERL_ARCHLIB (where to read
existing modules from), and PERL_INC (header files and C<libperl*.*>).

Extensions may be built either using the contents of the perl source
directory tree or from the installed perl library. The recommended way
is to build extensions after you have run 'make install' on perl
itself. You can do that in any directory on your hard disk that is not
below the perl source tree. The support for extensions below the ext
directory of the perl distribution is only good for the standard
extensions that come with perl.

If an extension is being built below the C<ext/> directory of the perl
source then MakeMaker will set PERL_SRC automatically (e.g.,
C<../..>).  If PERL_SRC is defined and the extension is recognized as
a standard extension, then other variables default to the following:

  PERL_INC     = PERL_SRC
  PERL_LIB     = PERL_SRC/lib
  PERL_ARCHLIB = PERL_SRC/lib
  INST_LIB     = PERL_LIB
  INST_ARCHLIB = PERL_ARCHLIB

If an extension is being built away from the perl source then MakeMaker
will leave PERL_SRC undefined and default to using the installed copy
of the perl library. The other variables default to the following:

  PERL_INC     = $archlibexp/CORE
  PERL_LIB     = $privlibexp
  PERL_ARCHLIB = $archlibexp
  INST_LIB     = ./blib/lib
  INST_ARCHLIB = ./blib/arch

If perl has not yet been installed then PERL_SRC can be defined on the
command line as shown in the previous section.


=head2 Which architecture dependent directory?

If you don't want to keep the defaults for the INSTALL* macros,
MakeMaker helps you to minimize the typing needed: the usual
relationship between INSTALLPRIVLIB and INSTALLARCHLIB is determined
by Configure at perl compilation time. MakeMaker supports the user who
sets INSTALLPRIVLIB. If INSTALLPRIVLIB is set, but INSTALLARCHLIB not,
then MakeMaker defaults the latter to be the same subdirectory of
INSTALLPRIVLIB as Configure decided for the counterparts in %Config ,
otherwise it defaults to INSTALLPRIVLIB. The same relationship holds
for INSTALLSITELIB and INSTALLSITEARCH.

MakeMaker gives you much more freedom than needed to configure
internal variables and get different results. It is worth to mention,
that make(1) also lets you configure most of the variables that are
used in the Makefile. But in the majority of situations this will not
be necessary, and should only be done, if the author of a package
recommends it (or you know what you're doing).

=head2 Using Attributes and Parameters

The following attributes can be specified as arguments to WriteMakefile()
or as NAME=VALUE pairs on the command line:

=cut

# The following "=item C" is used by the attrib_help routine
# likewise the "=back" below. So be careful when changing it!

=over 2

=item C

Ref to array of *.c file names. Initialised from a directory scan
and the values portion of the XS attribute hash. This is not
currently used by MakeMaker but may be handy in Makefile.PLs.

=item CCFLAGS

String that will be included in the compiler call command line between
the arguments INC and OPTIMIZE.

=item CONFIG

Arrayref. E.g. [qw(archname manext)] defines ARCHNAME & MANEXT from
config.sh. MakeMaker will add to CONFIG the following values anyway:
ar
cc
cccdlflags
ccdlflags
dlext
dlsrc
ld
lddlflags
ldflags
libc
lib_ext
obj_ext
ranlib
sitelibexp
sitearchexp
so

=item CONFIGURE

CODE reference. The subroutine should return a hash reference. The
hash may contain further attributes, e.g. {LIBS =E<gt> ...}, that have to
be determined by some evaluation method.

=item DEFINE

Something like C<"-DHAVE_UNISTD_H">

=item DIR

Ref to array of subdirectories containing Makefile.PLs e.g. [ 'sdbm'
] in ext/SDBM_File

=item DISTNAME

Your name for distributing the package (by tar file). This defaults to
NAME above.

=item DL_FUNCS

Hashref of symbol names for routines to be made available as
universal symbols.  Each key/value pair consists of the package name
and an array of routine names in that package.  Used only under AIX
(export lists) and VMS (linker options) at present.  The routine
names supplied will be expanded in the same way as XSUB names are
expanded by the XS() macro.  Defaults to

  {"$(NAME)" => ["boot_$(NAME)" ] }

e.g.

  {"RPC" => [qw( boot_rpcb rpcb_gettime getnetconfigent )],
   "NetconfigPtr" => [ 'DESTROY'] }

=item DL_VARS

Array of symbol names for variables to be made available as
universal symbols.  Used only under AIX (export lists) and VMS
(linker options) at present.  Defaults to [].  (e.g. [ qw(
Foo_version Foo_numstreams Foo_tree ) ])

=item EXCLUDE_EXT

Array of extension names to exclude when doing a static build.  This
is ignored if INCLUDE_EXT is present.  Consult INCLUDE_EXT for more
details.  (e.g.  [ qw( Socket POSIX ) ] )

This attribute may be most useful when specified as a string on the
commandline:  perl Makefile.PL EXCLUDE_EXT='Socket Safe'

=item EXE_FILES

Ref to array of executable files. The files will be copied to the
INST_SCRIPT directory. Make realclean will delete them from there
again.

=item NO_VC

In general any generated Makefile checks for the current version of
MakeMaker and the version the Makefile was built under. If NO_VC is
set, the version check is neglected. Do not write this into your
Makefile.PL, use it interactively instead.

=item FIRST_MAKEFILE

The name of the Makefile to be produced. Defaults to the contents of
MAKEFILE, but can be overridden. This is used for the second Makefile
that will be produced for the MAP_TARGET.

=item FULLPERL

Perl binary able to run this extension.

=item H

Ref to array of *.h file names. Similar to C.

=item IMPORTS

IMPORTS is only used on OS/2.

=item INC

Include file dirs eg: C<"-I/usr/5include -I/path/to/inc">

=item INCLUDE_EXT

Array of extension names to be included when doing a static build.
MakeMaker will normally build with all of the installed extensions when
doing a static build, and that is usually the desired behavior.  If
INCLUDE_EXT is present then MakeMaker will build only with those extensions
which are explicitly mentioned. (e.g.  [ qw( Socket POSIX ) ])

It is not necessary to mention DynaLoader or the current extension when
filling in INCLUDE_EXT.  If the INCLUDE_EXT is mentioned but is empty then
only DynaLoader and the current extension will be included in the build.

This attribute may be most useful when specified as a string on the
commandline:  perl Makefile.PL INCLUDE_EXT='POSIX Socket Devel::Peek'

=item INSTALLARCHLIB

Used by 'make install', which copies files from INST_ARCHLIB to this
directory if INSTALLDIRS is set to perl.

=item INSTALLBIN

Directory to install binary files (e.g. tkperl) into.

=item INSTALLDIRS

Determines which of the two sets of installation directories to
choose: installprivlib and installarchlib versus installsitelib and
installsitearch. The first pair is chosen with INSTALLDIRS=perl, the
second with INSTALLDIRS=site. Default is site.

=item INSTALLMAN1DIR

This directory gets the man pages at 'make install' time. Defaults to
$Config{installman1dir}.

=item INSTALLMAN3DIR

This directory gets the man pages at 'make install' time. Defaults to
$Config{installman3dir}.

=item INSTALLPRIVLIB

Used by 'make install', which copies files from INST_LIB to this
directory if INSTALLDIRS is set to perl.

=item INSTALLSCRIPT

Used by 'make install' which copies files from INST_SCRIPT to this
directory.

=item INSTALLSITELIB

Used by 'make install', which copies files from INST_LIB to this
directory if INSTALLDIRS is set to site (default).

=item INSTALLSITEARCH

Used by 'make install', which copies files from INST_ARCHLIB to this
directory if INSTALLDIRS is set to site (default).

=item INST_ARCHLIB

Same as INST_LIB for architecture dependent files.

=item INST_BIN

Directory to put real binary files during 'make'. These will be copied
to INSTALLBIN during 'make install'

=item INST_EXE

Old name for INST_SCRIPT. Deprecated. Please use INST_SCRIPT if you
need to use it.

=item INST_LIB

Directory where we put library files of this extension while building
it.

=item INST_MAN1DIR

Directory to hold the man pages at 'make' time

=item INST_MAN3DIR

Directory to hold the man pages at 'make' time

=item INST_SCRIPT

Directory, where executable files should be installed during
'make'. Defaults to "./blib/bin", just to have a dummy location during
testing. make install will copy the files in INST_SCRIPT to
INSTALLSCRIPT.

=item LDFROM

defaults to "$(OBJECT)" and is used in the ld command to specify
what files to link/load from (also see dynamic_lib below for how to
specify ld flags)

=item LIBPERL_A

The filename of the perllibrary that will be used together with this
extension. Defaults to libperl.a.

=item LIB

LIB can only be set at C<perl Makefile.PL> time. It has the effect of
setting both INSTALLPRIVLIB and INSTALLSITELIB to that value regardless any

=item LIBS

An anonymous array of alternative library
specifications to be searched for (in order) until
at least one library is found. E.g.

  'LIBS' => ["-lgdbm", "-ldbm -lfoo", "-L/path -ldbm.nfs"]

Mind, that any element of the array
contains a complete set of arguments for the ld
command. So do not specify

  'LIBS' => ["-ltcl", "-ltk", "-lX11"]

See ODBM_File/Makefile.PL for an example, where an array is needed. If
you specify a scalar as in

  'LIBS' => "-ltcl -ltk -lX11"

MakeMaker will turn it into an array with one element.

=item LINKTYPE

'static' or 'dynamic' (default unless usedl=undef in
config.sh). Should only be used to force static linking (also see
linkext below).

=item MAKEAPERL

Boolean which tells MakeMaker, that it should include the rules to
make a perl. This is handled automatically as a switch by
MakeMaker. The user normally does not need it.

=item MAKEFILE

The name of the Makefile to be produced.