- Jarkko's How to build Configure tweaked by Nick.
+ Jarkko's How to build Configure tweaked by Nick and Merijn.
The Configure script and config_h.SH file in the Perl distribution are
generated by a program called metaconfig. Metaconfig was originally
by Raphael Manfredi.
You have presumably obtained the metaconfig from the repository e.g.
- p4 sync //depot/metaconfig/...
-(those are three literal dots) or some other way to obtain this file,
-like a complete compressed archive from the previous pumpkin.
+
+ $ git clone git://perl5.git.perl.org/metaconfig.git metaconfig
+
+or some other way to obtain this file, like a complete compressed archive
+from the previous pumpkin.
Normally this directory and perl directory are next to each other
so ../perl will get you to perl and ../perl/../metaconfig will get you
Contents of this directory:
README: This file.
- U: Metaconfig units used for buliding Perl's Configure
+ U: Metaconfig units used for building Perl's Configure
U.check: Sample directory used for testing new metaconfig units.
see U.check/README for more information.
- dist-3.0at70:
- dist-3.0 at patchlevel 70. This is the final version released
- by Raphael Manfredi. Don't use it. Instead, use ...
- dist-3.0at70b:
- dist-3.0 at patchlevel 70 with unofficial patches 'a' and 'b'
- applied. This version was never officially released, but
- the patches are essential, so this is the version we use for
- perl. Actually, I've also applied U/dist_patches/dist-p70c
- to this tree. If someone with perforce access wants to change
- the name of the directory, that'd be fine. Otherwise, it really
- doesn't matter.
+ dist-3.5-20:
+ dist-3.5-20 is almost meta-4.0, still maintained by Raphael
+ Manfredi, but with a lot of fixes over 3.0, some changes
+ from the perl modifications merged and a much better
+ metalint. This directory comes from a tar distribution.
+ dist-svn:
+ a git clone of "dist". Optionally present. See (a) below.
+ dist:
+ a symlink to the lib you actually use. For Merijn that is
+ metaconfig/dist -> ../lib/dist
(a) You need to have dist installed so that you have metalint and metaconfig
in your $PATH.
- The dist version used for perl is dist-3.0at70b in this directory.
+ The dist version used for perl is dist-3.5-20 in this directory, which is
+ a slightly modified version of the original, which you can get at the SVN
+ repository https://svn.code.sf.net/p/dist/code/trunk/dist. If you'd like
+ to keep up to date with changes in dist, you can either use svn or git to
+ create your own clone. For git, that would be something like:
+
+ $ git svn clone \
+ svn://svn.code.sf.net/p/dist/code/trunk/dist \
+ dist-svn
+
Unsurprisingly 'dist' uses (its) Configure to generate itself:
- cd dist-3.0at70b
- chmod -R +w . # We have derived files in perforce :-(
- ./Configure
- make
- make install
+ $ cd dist-3.5-20 # or dist-svn
+ $ chmod -R +w . # We have derived files in git :-(
+ $ ./Configure
+ $ make
+ $ make install
+
+ After make install, remove lib/U/d_debugging.U in your target lib, as perl
+ uses its own way to set/define debugging (see INSTALL)
- dist's 'Configure' is similar to perl's but perhaps not
- quite as polished.
+ the dist-3.5-20 installation as used by Merijn is available on his CPAN as
+ perl-meta-3.5-20.tgz
+
+ dist's 'Configure' is similar to perl's but perhaps not quite as polished.
There are some perl specific "dist units" in the 'U' directory.
- The U directory also contains some patches to 'dist' which
- have already been applied to dist-3.0at70b directory.
- We have not yet arranged for metaconfig to use perl's versions
- of the 'units' by default so you need some housekeeping
- in the perl directory...
-
-(b) You need to be in a/the Perl directory, i.e. either
- something from //depot/perl/... or one of its branches
+ The U directory also contains some patches to 'dist' which have already
+ been applied to dist-3.5-20 directory.
+ We have not yet arranged for metaconfig to use perl's versions of the
+ 'units' by default so you need some housekeeping in the perl directory...
+
+(aa) -- optional --
+
+ If you plan to make changes to metaconfig or metalint locally (and you
+ probably want to, as both are written for perl4), consider installing
+ mconfig and mlint from the cmon subdirectory into your $PATH too. These
+ are the non-autoloading versions and can easily be changed. Here is what
+ I added at the beginning of mconfig:
+
+ --8<---
+ BEGIN { $ENV{LC_ALL} = "C"; }
+ chdir "/pro/3gl/CPAN/perl";
+ { my @Cc = qw( Configure config_h.SH );
+ system "chown merijn @Cc";
+ chmod 0775, @Cc;
+ #-d "merijn" or mkdir "merijn";
+ #system "cp -f Configure config_h.SH Porting/Glossary Porting/config.sh merijn/";
+ system "ls", "-l", @Cc;
+ }
+ -->8---
+
+ I also added the first two lines of that patch to mlint
+
+(b) You need to be in a/the Perl directory, i.e. either something from
+ //depot/perl/... or one of its branches
(e.g. Nick I-S is usually in //depot/perlio/...)
and you need:
1) have a symlink to ../metaconfig/U called U
3) have a symlink to MANIFEST called MANIFEST.new
4) chmod +w Configure config_h.SH Porting/Glossary Porting/config*
-(c) Write the new unit as U/foo/bar.U (usually 'foo' is just 'perl',
- but sometimes there's some more appropriate subdir of U. See
- U/README for a description of the various subdirectories.)
+(c) Write the new unit as U/perl/d_bar.U ('perl' can also be 'modified',
+ 'compline' or any other existing folder, except for 'all'). Choose
+ the best appropriate subdir of U. See U/README for a description of
+ the various subdirectories.)
-(d) Run metalint to see nits: as opposed to lint, the gripings of
- metalint are usually serious :-) and need fixing
+(d) Run metalint (or mlint) to see nits: as opposed to lint, the gripings
+ of metalint are usually serious :-) and need fixing
Exceptions are lots of
- Your private U/modified/voidflags.U overrides the public one.
+ Your private U/modified/issymlink.U overrides the public one.
due to the perl special units
+ an alias to something like
+ $ metalint |& grep -v -e '^ Your private U/'
+ will make the process silence up on that (of course you can add an
+ option to mlint to disable that warning (which is already disabled
+ by the undocumented and forgotten -s option, but that also suppresses
+ other warnings)
+
and
"End.U": stale ?MAKE: dependency '$W'.
which is apparently normal ...
-(e) p4 edit Configure config_h.SH
+-- the next steps are in the perl folder
-(f) metaconfig -m to regenerate Configure
+(e) chmod +w Configure config_h.SH
+
+(f) metaconfig -m to regenerate Configure (or mconfig -m)
(g) metaconfig does not deal with depends in config_h.SH, so some
reorganization is needed.
you see fit.
You can skip this phase, it's not essential, just good housekeeping.
-(k) make veryclean;sh Configure -des -Dusedevel;make all test
+(k) Run the perl build chain
+
+ make veryclean
+ sh ./Configure -des -Dusedevel
+
+ The dependency for uconfig.h isn't carved in stone, so you might
+ need to regenerate it
+
+ perl regen/uconfig_h.pl
+
+ Then make and make test or make test_harness (with TEST_JOBS=5)
+
+ make all test_harness
+
+ Before you start committing, make sure that the other developers
+ are happy and run
+
+ make test_porting
+
+-- the next steps are in the metaconfig folder again
+
+(l) git add U/perl/foo/bar.U when you are ready ...
+
+(m) git commit -m "Your commit description"
-(l) p4 add ../metaconfig/foo/bar.U when you are ready ...
+(n) When all patches are applied, tested and committed, and you are happy,
+ git push
-(m) p4 submit
- IF your $EDITOR and/or $VISUAL start a background edit session
- ('elvis -fork' or 'gvim'), be sure to set $P4EDITOR to an
- editor call that is waited for.
+ Merijn prefers to do steps (l) through (n) in git-gui
https://perl5.git.perl.org / metaconfig.git / blobdiff