openssl/util/mkinstallvars.pl
Richard Levitte 6e0fd246e7 Give util/mkinstallvars.pl more fine grained control over var dependencies
Essentially, we try to do what GNU does.  'prefix' is used to define the
defaults for 'exec_prefix' and 'libdir', and these are then used to define
further directory values.  util/mkinstallvars.pl is changed to reflect that
to the best of our ability.

Reviewed-by: Neil Horman <nhorman@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/24687)
2024-06-25 21:32:34 +02:00

131 lines
4.1 KiB
Perl

#! /usr/bin/env perl
# Copyright 2021 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the Apache License 2.0 (the "License"). You may not use
# this file except in compliance with the License. You can obtain a copy
# in the file LICENSE in the source distribution or at
# https://www.openssl.org/source/license.html
# All variables are supposed to come from Makefile, in environment variable
# form, or passed as variable assignments on the command line.
# The result is a Perl module creating the package OpenSSL::safe::installdata.
use File::Spec;
use List::Util qw(pairs);
# These are expected to be set up as absolute directories
my @absolutes = qw(PREFIX libdir);
# These may be absolute directories, and if not, they are expected to be set up
# as subdirectories to PREFIX or LIBDIR. The order of the pairs is important,
# since the LIBDIR subdirectories depend on the calculation of LIBDIR from
# PREFIX.
my @subdirs = pairs (PREFIX => [ qw(BINDIR LIBDIR INCLUDEDIR APPLINKDIR) ],
LIBDIR => [ qw(ENGINESDIR MODULESDIR PKGCONFIGDIR
CMAKECONFIGDIR) ]);
# For completeness, other expected variables
my @others = qw(VERSION LDLIBS);
my %all = ( );
foreach (@absolutes) { $all{$_} = 1 }
foreach (@subdirs) { foreach (@{$_->[1]}) { $all{$_} = 1 } }
foreach (@others) { $all{$_} = 1 }
print STDERR "DEBUG: all keys: ", join(", ", sort keys %all), "\n";
my %keys = ();
foreach (@ARGV) {
(my $k, my $v) = m|^([^=]*)=(.*)$|;
$keys{$k} = 1;
$ENV{$k} = $v;
}
# warn if there are missing values, and also if there are unexpected values
foreach my $k (sort keys %all) {
warn "No value given for $k\n" unless $keys{$k};
}
foreach my $k (sort keys %keys) {
warn "Unknown variable $k\n" unless $all{$k};
}
# This shouldn't be needed, but just in case we get relative paths that
# should be absolute, make sure they actually are.
foreach my $k (@absolutes) {
my $v = $ENV{$k} || '.';
print STDERR "DEBUG: $k = $v => ";
$v = File::Spec->rel2abs($v) if $v;
$ENV{$k} = $v;
print STDERR "$k = $ENV{$k}\n";
}
# Absolute paths for the subdir variables are computed. This provides
# the usual form of values for names that have become norm, known as GNU
# installation paths.
# For the benefit of those that need it, the subdirectories are preserved
# as they are, using the same variable names, suffixed with '_REL_{var}',
# if they are indeed subdirectories. The '{var}' part of the name tells
# which other variable value they are relative to.
foreach my $pair (@subdirs) {
my ($var, $subdir_vars) = @$pair;
foreach my $k (@$subdir_vars) {
my $v = $ENV{$k} || '.';
print STDERR "DEBUG: $k = $v => ";
if (File::Spec->file_name_is_absolute($v)) {
my $kr = "${k}_REL_${var}";
$ENV{$kr} = File::Spec->abs2rel($v, $ENV{$var});
print STDERR "$kr = $ENV{$kr}\n";
} else {
my $kr = "${k}_REL_${var}";
$ENV{$kr} = $v;
$ENV{$k} = File::Spec->rel2abs($v, $ENV{$var});
print STDERR "$k = $ENV{$k} , $kr = $v\n";
}
}
}
print <<_____;
package OpenSSL::safe::installdata;
use strict;
use warnings;
use Exporter;
our \@ISA = qw(Exporter);
our \@EXPORT = qw(
_____
foreach my $k (@absolutes) {
print " \$$k\n";
}
foreach my $pair (@subdirs) {
my ($var, $subdir_vars) = @$pair;
foreach my $k (@$subdir_vars) {
my $k2 = "${k}_REL_${var}";
print " \$$k \$$k2\n";
}
}
print <<_____;
\$VERSION \@LDLIBS
);
_____
foreach my $k (@absolutes) {
print "our \$$k" . ' ' x (27 - length($k)) . "= '$ENV{$k}';\n";
}
foreach my $pair (@subdirs) {
my ($var, $subdir_vars) = @$pair;
foreach my $k (@$subdir_vars) {
my $k2 = "${k}_REL_${var}";
print "our \$$k" . ' ' x (27 - length($k)) . "= '$ENV{$k}';\n";
print "our \$$k2" . ' ' x (27 - length($k2)) . "= '$ENV{$k2}';\n";
}
}
print <<_____;
our \$VERSION = '$ENV{VERSION}';
our \@LDLIBS =
# Unix and Windows use space separation, VMS uses comma separation
split(/ +| *, */, '$ENV{LDLIBS}');
1;
_____