THIS IS A TEST INSTANCE ONLY! REPOSITORIES CAN BE DELETED AT ANY TIME!

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confdata.pm.in: New template for configdata.pm

To have the configdata.pm text embedded in Configure was kind of ugly,
and becomes clearer if put into a template file, configdata.pm.in.  We
can then use OpenSSL::Template to generate it.

We also modify configdata.pm to be the build file generator, and run
it from Configure.  The benefit with that is that developers who
tinker and play with the build file can do a "factory reset" without
having to go through the configuration process, i.e. they can re-use
the config data the already have.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/9693)
pull/8442/merge
Richard Levitte 1 month ago
parent
commit
1f86b8228b
2 changed files with 456 additions and 457 deletions
  1. 38
    457
      Configure
  2. 418
    0
      configdata.pm.in

+ 38
- 457
Configure View File

@@ -19,6 +19,7 @@ use File::Spec::Functions qw/:DEFAULT abs2rel rel2abs splitdir/;
use File::Path qw/mkpath/;
use OpenSSL::fallback "$FindBin::Bin/external/perl/MODULES.txt";
use OpenSSL::Glob;
use OpenSSL::Template;

# see INSTALL for instructions.

@@ -2387,452 +2388,50 @@ foreach (grep /_(asm|aux)_src$/, keys %target) {

# Write down our configuration where it fits #########################

print "Creating configdata.pm\n";
open(OUT,">configdata.pm") || die "unable to create configdata.pm: $!\n";
print OUT <<"EOF";
#! $config{HASHBANGPERL}

package configdata;

use strict;
use warnings;

use Exporter;
#use vars qw(\@ISA \@EXPORT);
our \@ISA = qw(Exporter);
our \@EXPORT = qw(\%config \%target \%disabled \%withargs \%unified_info \@disablables \@disablables_int);

EOF
print OUT "our %config = (\n";
foreach (sort keys %config) {
if (ref($config{$_}) eq "ARRAY") {
print OUT " ", $_, " => [ ", join(", ",
map { quotify("perl", $_) }
@{$config{$_}}), " ],\n";
} elsif (ref($config{$_}) eq "HASH") {
print OUT " ", $_, " => {";
if (scalar keys %{$config{$_}} > 0) {
print OUT "\n";
foreach my $key (sort keys %{$config{$_}}) {
print OUT " ",
join(" => ",
quotify("perl", $key),
defined $config{$_}->{$key}
? quotify("perl", $config{$_}->{$key})
: "undef");
print OUT ",\n";
}
print OUT " ";
}
print OUT "},\n";
} else {
print OUT " ", $_, " => ", quotify("perl", $config{$_}), ",\n"
}
}
print OUT <<"EOF";
);

EOF
print OUT "our %target = (\n";
foreach (sort keys %target) {
if (ref($target{$_}) eq "ARRAY") {
print OUT " ", $_, " => [ ", join(", ",
map { quotify("perl", $_) }
@{$target{$_}}), " ],\n";
} else {
print OUT " ", $_, " => ", quotify("perl", $target{$_}), ",\n"
}
}
print OUT <<"EOF";
my %template_vars = (
config => \%config,
target => \%target,
disablables => \@disablables,
disablables_int => \@disablables_int,
disabled => \%disabled,
withargs => \%withargs,
unified_info => \%unified_info,
tls => \@tls,
dtls => \@dtls,
makevars => [ sort keys %user ],
disabled_info => \%disabled_info,
user_crossable => \@user_crossable,
);

EOF
print OUT "our \%available_protocols = (\n";
print OUT " tls => [ ", join(", ", map { quotify("perl", $_) } @tls), " ],\n";
print OUT " dtls => [ ", join(", ", map { quotify("perl", $_) } @dtls), " ],\n";
print OUT <<"EOF";
);

EOF
print OUT "our \@disablables = (\n";
foreach (@disablables) {
print OUT " ", quotify("perl", $_), ",\n";
}
print OUT <<"EOF";
);

EOF
print OUT "# The following come from Configure's @disablables_int\n";
print OUT "our \@disablables_int = (\n";
foreach (@disablables_int) {
print OUT " ", quotify("perl", $_), ",\n";
}
print OUT <<"EOF";
);

EOF
print OUT "our \%disabled = (\n";
foreach (sort keys %disabled) {
print OUT " ", quotify("perl", $_), " => ", quotify("perl", $disabled{$_}), ",\n";
}
print OUT <<"EOF";
);

EOF
print OUT "our %withargs = (\n";
foreach (sort keys %withargs) {
if (ref($withargs{$_}) eq "ARRAY") {
print OUT " ", $_, " => [ ", join(", ",
map { quotify("perl", $_) }
@{$withargs{$_}}), " ],\n";
} else {
print OUT " ", $_, " => ", quotify("perl", $withargs{$_}), ",\n"
}
}
print OUT <<"EOF";
);

EOF
if ($builder eq "unified") {
my $recurse;
$recurse = sub {
my $indent = shift;
foreach (@_) {
if (ref $_ eq "ARRAY") {
print OUT " "x$indent, "[\n";
foreach (@$_) {
$recurse->($indent + 4, $_);
}
print OUT " "x$indent, "],\n";
} elsif (ref $_ eq "HASH") {
my %h = %$_;
print OUT " "x$indent, "{\n";
foreach (sort keys %h) {
if (ref $h{$_} eq "") {
print OUT " "x($indent + 4), quotify("perl", $_), " => ", quotify("perl", $h{$_}), ",\n";
} else {
print OUT " "x($indent + 4), quotify("perl", $_), " =>\n";
$recurse->($indent + 8, $h{$_});
}
}
print OUT " "x$indent, "},\n";
} else {
print OUT " "x$indent, quotify("perl", $_), ",\n";
}
}
};
print OUT "our %unified_info = (\n";
foreach (sort keys %unified_info) {
if (ref $unified_info{$_} eq "") {
print OUT " "x4, quotify("perl", $_), " => ", quotify("perl", $unified_info{$_}), ",\n";
} else {
print OUT " "x4, quotify("perl", $_), " =>\n";
$recurse->(8, $unified_info{$_});
}
}
print OUT <<"EOF";
);

EOF
}
print OUT
"# The following data is only used when this files is use as a script\n";
print OUT "my \@makevars = (\n";
foreach (sort keys %user) {
print OUT " '",$_,"',\n";
}
print OUT ");\n";
print OUT "my \%disabled_info = (\n";
foreach my $what (sort keys %disabled_info) {
print OUT " '$what' => {\n";
foreach my $info (sort keys %{$disabled_info{$what}}) {
if (ref $disabled_info{$what}->{$info} eq 'ARRAY') {
print OUT " $info => [ ",
join(', ', map { "'$_'" } @{$disabled_info{$what}->{$info}}),
" ],\n";
} else {
print OUT " $info => '", $disabled_info{$what}->{$info},
"',\n";
}
}
print OUT " },\n";
}
print OUT ");\n";
print OUT 'my @user_crossable = qw( ', join (' ', @user_crossable), " );\n";
print OUT << 'EOF';
# If run directly, we can give some answers, and even reconfigure
unless (caller) {
use Getopt::Long;
use File::Spec::Functions;
use File::Basename;
use Pod::Usage;

my $here = dirname($0);

my $dump = undef;
my $cmdline = undef;
my $options = undef;
my $target = undef;
my $envvars = undef;
my $makevars = undef;
my $buildparams = undef;
my $reconf = undef;
my $verbose = undef;
my $help = undef;
my $man = undef;
GetOptions('dump|d' => \$dump,
'command-line|c' => \$cmdline,
'options|o' => \$options,
'target|t' => \$target,
'environment|e' => \$envvars,
'make-variables|m' => \$makevars,
'build-parameters|b' => \$buildparams,
'reconfigure|reconf|r' => \$reconf,
'verbose|v' => \$verbose,
'help' => \$help,
'man' => \$man)
or die "Errors in command line arguments\n";

unless ($dump || $cmdline || $options || $target || $envvars || $makevars
|| $buildparams || $reconf || $verbose || $help || $man) {
print STDERR <<"_____";
You must give at least one option.
For more information, do '$0 --help'
_____
exit(2);
}

if ($help) {
pod2usage(-exitval => 0,
-verbose => 1);
}
if ($man) {
pod2usage(-exitval => 0,
-verbose => 2);
}
if ($dump || $cmdline) {
print "\nCommand line (with current working directory = $here):\n\n";
print ' ',join(' ',
$config{PERL},
catfile($config{sourcedir}, 'Configure'),
@{$config{perlargv}}), "\n";
print "\nPerl information:\n\n";
print ' ',$config{perl_cmd},"\n";
print ' ',$config{perl_version},' for ',$config{perl_archname},"\n";
}
if ($dump || $options) {
my $longest = 0;
my $longest2 = 0;
foreach my $what (@disablables) {
$longest = length($what) if $longest < length($what);
$longest2 = length($disabled{$what})
if $disabled{$what} && $longest2 < length($disabled{$what});
}
print "\nEnabled features:\n\n";
foreach my $what (@disablables) {
print " $what\n" unless $disabled{$what};
}
print "\nDisabled features:\n\n";
foreach my $what (@disablables) {
if ($disabled{$what}) {
print " $what", ' ' x ($longest - length($what) + 1),
"[$disabled{$what}]", ' ' x ($longest2 - length($disabled{$what}) + 1);
print $disabled_info{$what}->{macro}
if $disabled_info{$what}->{macro};
print ' (skip ',
join(', ', @{$disabled_info{$what}->{skipped}}),
')'
if $disabled_info{$what}->{skipped};
print "\n";
}
}
}
if ($dump || $target) {
print "\nConfig target attributes:\n\n";
foreach (sort keys %target) {
next if $_ =~ m|^_| || $_ eq 'template';
my $quotify = sub {
map { (my $x = $_) =~ s|([\\\$\@"])|\\$1|g; "\"$x\""} @_;
};
print ' ', $_, ' => ';
if (ref($target{$_}) eq "ARRAY") {
print '[ ', join(', ', $quotify->(@{$target{$_}})), " ],\n";
} else {
print $quotify->($target{$_}), ",\n"
}
}
}
if ($dump || $envvars) {
print "\nRecorded environment:\n\n";
foreach (sort keys %{$config{perlenv}}) {
print ' ',$_,' = ',($config{perlenv}->{$_} || ''),"\n";
}
}
if ($dump || $makevars) {
print "\nMakevars:\n\n";
foreach my $var (@makevars) {
my $prefix = '';
$prefix = $config{CROSS_COMPILE}
if grep { $var eq $_ } @user_crossable;
$prefix //= '';
print ' ',$var,' ' x (16 - length $var),'= ',
(ref $config{$var} eq 'ARRAY'
? join(' ', @{$config{$var}})
: $prefix.$config{$var}),
"\n"
if defined $config{$var};
}

my @buildfile = ($config{builddir}, $config{build_file});
unshift @buildfile, $here
unless file_name_is_absolute($config{builddir});
my $buildfile = canonpath(catdir(@buildfile));
print <<"_____";

NOTE: These variables only represent the configuration view. The build file
template may have processed these variables further, please have a look at the
build file for more exact data:
$buildfile
_____
}
if ($dump || $buildparams) {
my @buildfile = ($config{builddir}, $config{build_file});
unshift @buildfile, $here
unless file_name_is_absolute($config{builddir});
print "\nbuild file:\n\n";
print " ", canonpath(catfile(@buildfile)),"\n";

print "\nbuild file templates:\n\n";
foreach (@{$config{build_file_templates}}) {
my @tmpl = ($_);
unshift @tmpl, $here
unless file_name_is_absolute($config{sourcedir});
print ' ',canonpath(catfile(@tmpl)),"\n";
}
}
if ($reconf) {
if ($verbose) {
print 'Reconfiguring with: ', join(' ',@{$config{perlargv}}), "\n";
foreach (sort keys %{$config{perlenv}}) {
print ' ',$_,' = ',($config{perlenv}->{$_} || ""),"\n";
}
}

chdir $here;
exec $^X,catfile($config{sourcedir}, 'Configure'),'reconf';
}
}

1;

__END__

=head1 NAME

configdata.pm - configuration data for OpenSSL builds

=head1 SYNOPSIS

Interactive:

perl configdata.pm [options]

As data bank module:

use configdata;

=head1 DESCRIPTION

This module can be used in two modes, interactively and as a module containing
all the data recorded by OpenSSL's Configure script.

When used interactively, simply run it as any perl script, with at least one
option, and you will get the information you ask for. See L</OPTIONS> below.

When loaded as a module, you get a few databanks with useful information to
perform build related tasks. The databanks are:

%config Configured things.
%target The OpenSSL config target with all inheritances
resolved.
%disabled The features that are disabled.
@disablables The list of features that can be disabled.
%withargs All data given through --with-THING options.
%unified_info All information that was computed from the build.info
files.

=head1 OPTIONS

=over 4

=item B<--help>

Print a brief help message and exit.

=item B<--man>

Print the manual page and exit.

=item B<--dump> | B<-d>

Print all relevant configuration data. This is equivalent to B<--command-line>
B<--options> B<--target> B<--environment> B<--make-variables>
B<--build-parameters>.

=item B<--command-line> | B<-c>

Print the current configuration command line.

=item B<--options> | B<-o>

Print the features, both enabled and disabled, and display defined macro and
skipped directories where applicable.

=item B<--target> | B<-t>

Print the config attributes for this config target.

=item B<--environment> | B<-e>

Print the environment variables and their values at the time of configuration.

=item B<--make-variables> | B<-m>

Print the main make variables generated in the current configuration

=item B<--build-parameters> | B<-b>

Print the build parameters, i.e. build file and build file templates.

=item B<--reconfigure> | B<--reconf> | B<-r>

Redo the configuration.

=item B<--verbose> | B<-v>

Verbose output.

=back

=cut

EOF
close(OUT);
my $configdata_outname = 'configdata.pm';
print "Creating $configdata_outname\n";
open CONFIGDATA, ">$configdata_outname.new"
or die "Trying to create $configdata_outname.new: $!";
my $configdata_tmplname = cleanfile($srcdir, "configdata.pm.in", $blddir);
my $configdata_tmpl =
OpenSSL::Template->new(TYPE => 'FILE', SOURCE => $configdata_tmplname);
$configdata_tmpl->fill_in(
FILENAME => $configdata_tmplname,
OUTPUT => \*CONFIGDATA,
HASH => { %template_vars,
autowarntext => [
'WARNING: do not edit!',
"Generated by Configure from $configdata_tmplname",
] }
) or die $Text::Template::ERROR;
close CONFIGDATA;
rename "$configdata_outname.new", $configdata_outname;
if ($builder_platform eq 'unix') {
my $mode = (0755 & ~umask);
chmod $mode, 'configdata.pm'
or warn sprintf("WARNING: Couldn't change mode for 'configdata.pm' to 0%03o: %s\n",$mode,$!);
}

my %builders = (
unified => sub {
print 'Creating ',$target{build_file},"\n";
run_dofile(catfile($blddir, $target{build_file}),
@{$config{build_file_templates}});
},
);

$builders{$builder}->($builder_platform, @builder_opts);
print "Running $configdata_outname\n";
my $perlcmd = (quotify("maybeshell", $config{PERL}))[0];
my $cmd = "$perlcmd $configdata_outname";
#print STDERR "DEBUG[run_dofile]: \$cmd = $cmd\n";
system($cmd);
exit 1 if $? != 0;

$SIG{__DIE__} = $orig_death_handler;

@@ -3223,24 +2822,6 @@ sub usage
exit(1);
}

sub run_dofile
{
my $out = shift;
my @templates = @_;

unlink $out || warn "Can't remove $out, $!"
if -f $out;
foreach (@templates) {
die "Can't open $_, $!" unless -f $_;
}
my $perlcmd = (quotify("maybeshell", $config{PERL}))[0];
my $cmd = "$perlcmd \"-I.\" \"-Mconfigdata\" \"$dofile\" -o\"Configure\" \"".join("\" \"",@templates)."\" > \"$out.new\"";
#print STDERR "DEBUG[run_dofile]: \$cmd = $cmd\n";
system($cmd);
exit 1 if $? != 0;
rename("$out.new", $out) || die "Can't rename $out.new, $!";
}

sub compiler_predefined {
state %predefined;
my $cc = shift;

+ 418
- 0
configdata.pm.in View File

@@ -0,0 +1,418 @@
#! {- $config{HASHBANGPERL} -}
# -*- mode: perl -*-
{-
sub out_item {
my $ref = shift;
# Available options:
# indent => callers indentation (int)
# delimiters => 1 if outer delimiters should be added
my %opts = @_;

my $indent = $opts{indent} // 0;
# Indentation of the whole structure, where applicable
my $nlindent1 = "\n" . ' ' x $indent;
# Indentation of individual items, where applicable
my $nlindent2 = "\n" . ' ' x ($indent + 4);

my $product; # Finished product, or reference to a function that
# produces a string, given $_
# The following are only used when $product is a function reference
my $delim_l; # Left delimiter of structure
my $delim_r; # Right delimiter of structure
my $separator; # Item separator
my @items; # Items to iterate over

if (ref($ref) eq "ARRAY") {
if (scalar @$ref == 0) {
$product = $opts{delimiters} ? '[]' : '';
} else {
$product = sub {
out_item(\$_, delimiters => 1, indent => $indent + 4)
};
$delim_l = ($opts{delimiters} ? '[' : '').$nlindent2;
$delim_r = $nlindent1.($opts{delimiters} ? ']' : '');
$separator = ",$nlindent2";
@items = @$ref;
}
} elsif (ref($ref) eq "HASH") {
if (scalar keys %$ref == 0) {
$product = $opts{delimiters} ? '{}' : '';
} else {
$product = sub {
quotify1($_) . " => "
. out_item($ref->{$_}, delimiters => 1, indent => $indent + 4)
};
$delim_l = ($opts{delimiters} ? '{' : '').$nlindent2;
$delim_r = $nlindent1.($opts{delimiters} ? '}' : '');
$separator = ",$nlindent2";
@items = sort keys %$ref;
}
} elsif (ref($ref) eq "SCALAR") {
$product = defined $$ref ? quotify1 $$ref : "undef";
} else {
$product = defined $ref ? quotify1 $ref : "undef";
}

if (ref($product) eq "CODE") {
$delim_l . join($separator, map { &$product } @items) . $delim_r;
} else {
$product;
}
}

# We must make sourcedir() return an absolute path, because configdata.pm
# may be loaded as a module from any script in any directory, making
# relative paths untrustable. Because the result is used with 'use lib',
# we must ensure that it returns a Unix style path. Cwd::abs_path does
# that (File::Spec::Functions::rel2abs return O/S specific paths)
use File::Spec::Functions;
use Cwd qw(abs_path);
sub sourcedir {
return abs_path(catdir($config{sourcedir}, @_));
}
sub sourcefile {
return abs_path(catfile($config{sourcedir}, @_));
}
-}
package configdata;

use strict;
use warnings;

use Exporter;
our @ISA = qw(Exporter);
our @EXPORT = qw(
%config %target %disabled %withargs %unified_info
@disablables @disablables_int
);

our %config = ({- out_item(\%config); -});
our %target = ({- out_item(\%target); -});
our @disablables = ({- out_item(\@disablables) -});
our @disablables_int = ({- out_item(\@disablables_int) -});
our %disabled = ({- out_item(\%disabled); -});
our %withargs = ({- out_item(\%withargs); -});
our %unified_info = ({- out_item(\%unified_info); -});

# Unexported, only used by OpenSSL::Test::Utils::available_protocols()
our %available_protocols = (
tls => [{- out_item(\@tls) -}],
dtls => [{- out_item(\@dtls) -}],
);

# The following data is only used when this files is use as a script
my @makevars = ({- out_item(\@makevars); -});
my %disabled_info = ({- out_item(\%disabled_info); -});
my @user_crossable = qw( {- join (' ', @user_crossable) -} );

# If run directly, we can give some answers, and even reconfigure
unless (caller) {
use Getopt::Long;
use File::Spec::Functions;
use File::Basename;
use Pod::Usage;

my $here = dirname($0);

if (scalar @ARGV == 0) {
# With no arguments, re-create the build file

use lib '{- sourcedir('util', 'perl') -}';
use OpenSSL::fallback '{- sourcefile('external', 'perl', 'MODULES.txt') -}';
use OpenSSL::Template;

my $prepend = <<"_____";
use File::Spec::Functions;
use lib '{- sourcedir('util', 'perl') -}';
_____
$prepend .= <<"_____" if defined $target{perl_platform};
use lib '{- sourcedir('Configurations') -}';
use lib '{- $config{builddir} -}';
use platform;
_____

my @autowarntext = (
'WARNING: do not edit!',
"Generated by configdata.pm from "
.join(", ", @{$config{build_file_templates}})
);

print 'Creating ',$target{build_file},"\n";
open BUILDFILE, ">$target{build_file}.new"
or die "Trying to create $target{build_file}.new: $!";
foreach (@{$config{build_file_templates}}) {
my $tmpl = OpenSSL::Template->new(TYPE => 'FILE',
SOURCE => $_);
$tmpl->fill_in(FILENAME => $_,
OUTPUT => \*BUILDFILE,
HASH => { config => \%config,
target => \%target,
disabled => \%disabled,
withargs => \%withargs,
unified_info => \%unified_info,
autowarntext => \@autowarntext },
PREPEND => $prepend,
# To ensure that global variables and functions
# defined in one template stick around for the
# next, making them combinable
PACKAGE => 'OpenSSL::safe')
or die $Text::Template::ERROR;
}
close BUILDFILE;
rename("$target{build_file}.new", $target{build_file})
or die "Trying to rename $target{build_file}.new to $target{build_file}: $!";

exit(0);
}

my $dump = undef;
my $cmdline = undef;
my $options = undef;
my $target = undef;
my $envvars = undef;
my $makevars = undef;
my $buildparams = undef;
my $reconf = undef;
my $verbose = undef;
my $help = undef;
my $man = undef;
GetOptions('dump|d' => \$dump,
'command-line|c' => \$cmdline,
'options|o' => \$options,
'target|t' => \$target,
'environment|e' => \$envvars,
'make-variables|m' => \$makevars,
'build-parameters|b' => \$buildparams,
'reconfigure|reconf|r' => \$reconf,
'verbose|v' => \$verbose,
'help' => \$help,
'man' => \$man)
or die "Errors in command line arguments\n";

if (scalar @ARGV > 0) {
print STDERR <<"_____";
Unrecognised arguments.
For more information, do '$0 --help'
_____
exit(2);
}

if ($help) {
pod2usage(-exitval => 0,
-verbose => 1);
}
if ($man) {
pod2usage(-exitval => 0,
-verbose => 2);
}
if ($dump || $cmdline) {
print "\nCommand line (with current working directory = $here):\n\n";
print ' ',join(' ',
$config{PERL},
catfile($config{sourcedir}, 'Configure'),
@{$config{perlargv}}), "\n";
print "\nPerl information:\n\n";
print ' ',$config{perl_cmd},"\n";
print ' ',$config{perl_version},' for ',$config{perl_archname},"\n";
}
if ($dump || $options) {
my $longest = 0;
my $longest2 = 0;
foreach my $what (@disablables) {
$longest = length($what) if $longest < length($what);
$longest2 = length($disabled{$what})
if $disabled{$what} && $longest2 < length($disabled{$what});
}
print "\nEnabled features:\n\n";
foreach my $what (@disablables) {
print " $what\n" unless $disabled{$what};
}
print "\nDisabled features:\n\n";
foreach my $what (@disablables) {
if ($disabled{$what}) {
print " $what", ' ' x ($longest - length($what) + 1),
"[$disabled{$what}]", ' ' x ($longest2 - length($disabled{$what}) + 1);
print $disabled_info{$what}->{macro}
if $disabled_info{$what}->{macro};
print ' (skip ',
join(', ', @{$disabled_info{$what}->{skipped}}),
')'
if $disabled_info{$what}->{skipped};
print "\n";
}
}
}
if ($dump || $target) {
print "\nConfig target attributes:\n\n";
foreach (sort keys %target) {
next if $_ =~ m|^_| || $_ eq 'template';
my $quotify = sub {
map { (my $x = $_) =~ s|([\\\$\@"])|\\$1|g; "\"$x\""} @_;
};
print ' ', $_, ' => ';
if (ref($target{$_}) eq "ARRAY") {
print '[ ', join(', ', $quotify->(@{$target{$_}})), " ],\n";
} else {
print $quotify->($target{$_}), ",\n"
}
}
}
if ($dump || $envvars) {
print "\nRecorded environment:\n\n";
foreach (sort keys %{$config{perlenv}}) {
print ' ',$_,' = ',($config{perlenv}->{$_} || ''),"\n";
}
}
if ($dump || $makevars) {
print "\nMakevars:\n\n";
foreach my $var (@makevars) {
my $prefix = '';
$prefix = $config{CROSS_COMPILE}
if grep { $var eq $_ } @user_crossable;
$prefix //= '';
print ' ',$var,' ' x (16 - length $var),'= ',
(ref $config{$var} eq 'ARRAY'
? join(' ', @{$config{$var}})
: $prefix.$config{$var}),
"\n"
if defined $config{$var};
}

my @buildfile = ($config{builddir}, $config{build_file});
unshift @buildfile, $here
unless file_name_is_absolute($config{builddir});
my $buildfile = canonpath(catdir(@buildfile));
print <<"_____";

NOTE: These variables only represent the configuration view. The build file
template may have processed these variables further, please have a look at the
build file for more exact data:
$buildfile
_____
}
if ($dump || $buildparams) {
my @buildfile = ($config{builddir}, $config{build_file});
unshift @buildfile, $here
unless file_name_is_absolute($config{builddir});
print "\nbuild file:\n\n";
print " ", canonpath(catfile(@buildfile)),"\n";

print "\nbuild file templates:\n\n";
foreach (@{$config{build_file_templates}}) {
my @tmpl = ($_);
unshift @tmpl, $here
unless file_name_is_absolute($config{sourcedir});
print ' ',canonpath(catfile(@tmpl)),"\n";
}
}
if ($reconf) {
if ($verbose) {
print 'Reconfiguring with: ', join(' ',@{$config{perlargv}}), "\n";
foreach (sort keys %{$config{perlenv}}) {
print ' ',$_,' = ',($config{perlenv}->{$_} || ""),"\n";
}
}

chdir $here;
exec $^X,catfile($config{sourcedir}, 'Configure'),'reconf';
}
}

1;

__END__

=head1 NAME

configdata.pm - configuration data for OpenSSL builds

=head1 SYNOPSIS

Interactive:

perl configdata.pm [options]

As data bank module:

use configdata;

=head1 DESCRIPTION

This module can be used in two modes, interactively and as a module containing
all the data recorded by OpenSSL's Configure script.

When used interactively, simply run it as any perl script.
If run with no arguments, it will rebuild the build file (Makefile or
corresponding).
With at least one option, it will instead get the information you ask for, or
re-run the configuration process.
See L</OPTIONS> below for more information.

When loaded as a module, you get a few databanks with useful information to
perform build related tasks. The databanks are:

%config Configured things.
%target The OpenSSL config target with all inheritances
resolved.
%disabled The features that are disabled.
@disablables The list of features that can be disabled.
%withargs All data given through --with-THING options.
%unified_info All information that was computed from the build.info
files.

=head1 OPTIONS

=over 4

=item B<--help>

Print a brief help message and exit.

=item B<--man>

Print the manual page and exit.

=item B<--dump> | B<-d>

Print all relevant configuration data. This is equivalent to B<--command-line>
B<--options> B<--target> B<--environment> B<--make-variables>
B<--build-parameters>.

=item B<--command-line> | B<-c>

Print the current configuration command line.

=item B<--options> | B<-o>

Print the features, both enabled and disabled, and display defined macro and
skipped directories where applicable.

=item B<--target> | B<-t>

Print the config attributes for this config target.

=item B<--environment> | B<-e>

Print the environment variables and their values at the time of configuration.

=item B<--make-variables> | B<-m>

Print the main make variables generated in the current configuration

=item B<--build-parameters> | B<-b>

Print the build parameters, i.e. build file and build file templates.

=item B<--reconfigure> | B<--reconf> | B<-r>

Re-run the configuration process.

=item B<--verbose> | B<-v>

Verbose output.

=back

=cut

EOF

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