mirror of
https://git.freebsd.org/ports.git
synced 2025-07-08 04:49:17 -04:00
246 lines
7.3 KiB
Perl
246 lines
7.3 KiB
Perl
--- admin/detect-autoconf.pl.orig 2008-02-13 14:19:34.000000000 +0100
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+++ admin/detect-autoconf.pl 2008-02-27 15:46:54.000000000 +0100
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@@ -3,6 +3,9 @@
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# Try to locate best version of auto*
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# By Michael Pyne <michael.pyne@kdemail.net>
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#
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+# Stripped down for new FreeBSD autotools environment
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+# Ade Lovett <ade@FreeBSD.org> 2007-09-10
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+#
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# Copyright (c) 2005.
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# This code is public domain. You may use it however you like (including
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# relicensing).
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@@ -21,155 +24,6 @@
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return "";
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}
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-# Subroutine to lexicographically compare two version strings, a and b.
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-# If a > b, 1 is returned.
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-# If a == b, 0 is returned.
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-# If a < b, -1 is returned.
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-#
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-# If the strings are of uneven number length then the shorter string is
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-# prepended by enough zeroes to make the two string lengths equal in order to
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-# allow an accurate comparison. Note that the zero-padding only occurs in
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-# between version separators (i.e. 1.6 and 1.10, results in 1.06 vs. 1.10).
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-# Parts of the version ending in -foo (or any other text) are not considered
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-# when doing the compare. (i.e. 2.53a vs 2.53 doesn't end up in 2.53a vs.
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-# 2.053)
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-sub compareVersions
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-{
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- my ($a, $b) = @_;
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-
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- # Split the strings up by '.' (version separator) and start comparing digit
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- # length.
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-
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- my @aParts = split(/\./, $a);
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- my @bParts = split(/\./, $b);
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-
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- # Make the arrays equal in length by adding missing zeroes to the end of the
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- # version.
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- push @aParts, '0' while scalar @aParts < scalar @bParts;
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- push @bParts, '0' while scalar @bParts < scalar @aParts;
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-
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- # Now compare each individual portion.
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- for (my $i = 0; $i < scalar @aParts; ++$i)
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- {
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- # Make sure that any portion that has numbers is contiguous. I'm sure
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- # there's a technique for saving stuff like 2.52a2 but I don't feel
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- # like implementing it.
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- if ($aParts[$i] !~ /^[^\d]*\d+[^\d]*$/ or
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- $bParts[$i] !~ /^[^\d]*\d+[^\d]*$/)
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- {
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- die "Not able to compare $a to $b!\n";
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- }
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-
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- my ($aDigits) = ($aParts[$i] =~ /(\d+)/);
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- my ($bDigits) = ($bParts[$i] =~ /(\d+)/);
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-
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- # Perl is $MODERATELY_INSULTING_TERM, don't remove the parentheses in
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- # the delta calculation below.
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- my $delta = (length $aDigits) - (length $bDigits);
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- if ($delta < 0) # b is longer
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- {
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- my $replacement = ('0' x (-$delta)) . $aDigits;
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- $aParts[$i] =~ s/$aDigits/$replacement/;
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- }
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- elsif ($delta > 0) # a is longer
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- {
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- my $replacement = ('0' x $delta) . $bDigits;
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- $bParts[$i] =~ s/$bDigits/$replacement/;
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- }
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- }
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-
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- # Arrays now have standardized version components, let's re-merge them
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- # to strings to do the compare.
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- my $newA = join('.', @aParts);
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- my $newB = join('.', @bParts);
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-
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- return 1 if ($newA gt $newB);
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- return -1 if ($newA lt $newB);
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- return 0;
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-}
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-
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-# Subroutine to determine the highest installed version of the given program,
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-# searching from the given paths.
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-sub findBest
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-{
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- my ($program, @paths) = @_;
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- my $best_version_found = '0'; # Deliberately a string.
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- my %versions;
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- my %minimumVersions = (
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- 'autoconf' => '2.5',
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- 'automake' => '1.6',
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- );
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- my $sgn; # Used for compareVersions results.
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-
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- # Allow user to use environment variable to override search.
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- return $ENV{uc $program} if $ENV{uc $program};
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-
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- for $prefix (@paths)
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- {
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- @files = glob "$prefix/$program*";
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- for $file (@files)
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- {
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- # Don't check non-executable scripts.
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- next unless -x $file;
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-
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- ($version) = $file =~ /$prefix\/$program-?(.*)$/;
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-
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- # Don't check the -wrapper ones (or any other non program one).
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- # The real deal should start with a version number, or have no
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- # suffix at all.
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- next if $version =~ /^[^\d]/;
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-
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- # Special case some programs to make sure it has a minimum version.
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- if (not $version and exists $minimumVersions{$program})
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- {
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- my $min_version = $minimumVersions{$program};
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- my $versionOutput = `$program --version 2>/dev/null | head -n 1`;
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-
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- # If we can't run the script to get the version it likely won't work later.
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- next unless $versionOutput;
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-
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- # Use number.number for version (we don't need the excess in general).
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- ($versionOutput) = ($versionOutput =~ /(\d+\.\d+)/);
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-
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- # compareVersions returns -1 if the left argument is less than
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- # the right argument. It can also die for invalid input so
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- # wrap with eval.
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- eval {
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- $sgn = compareVersions($versionOutput, $min_version);
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- };
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-
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- # $@ would be set if an error was encountered.
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- if ($@ or not $versionOutput or $sgn == -1) {
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- next;
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- }
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- }
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-
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- # If no version suffix then use it in favor of a versioned autotool
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- # since the ever-popular WANT_AUTOFOO should then work (in theory).
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- return $file unless $version;
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-
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- # Emulate 'which', and abort if we've already seen this version.
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- next if exists $versions{$version};
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-
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- # Save filename of program.
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- $versions{$version} = $file;
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-
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- # Use string comparison so that e.g. 253a will be > 253 but < 254.
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- # See above about the need for eval.
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- eval {
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- $sgn = compareVersions($version, $best_version_found);
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- };
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-
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- if (not $@ and $sgn == 1)
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- {
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- $best_version_found = $version;
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- }
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- }
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- }
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-
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- return $versions{$best_version_found};
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-}
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-
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# Find an appropriate "which" program for later use by the shell script calling
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# us.
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sub findWhich
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@@ -183,17 +37,6 @@
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}
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}
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-# Uses which() to find a program unless the user provided its path in the
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-# environment (the upper case program name is searched).
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-sub findProgram
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-{
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- $suffix = ""; # For use if @_ has only one param.
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- my ($program, $suffix) = @_;
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-
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- return $ENV{uc $program} if $ENV{uc $program};
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- return which("$program$suffix");
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-}
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-
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# SCRIPT STARTS.
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# Search in path.
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@@ -203,48 +46,16 @@
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unshift @paths, '/usr/local/bin' unless grep $_ eq '/usr/local/bin', @paths;
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unshift @paths, '/usr/bin' unless grep $_ eq '/usr/bin', @paths;
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-$autoconf = findBest('autoconf', @paths);
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-($autoconf_suffix) = $autoconf =~ /.*autoconf(.*)$/;
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-
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-# Find matching autoconf companions.
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-$autoheader = findProgram('autoheader', $autoconf_suffix);
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-$autom4te = findProgram('autom4te', $autoconf_suffix);
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-
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-# Get best automake, and look for unsermake to possibly override it.
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-$automake = findBest('automake', @paths);
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-$unsermake = "";
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-# backward compatible: if $UNSERMAKE points to a path, use it
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-$unsermake = findProgram('unsermake') if (defined($ENV{'UNSERMAKE'}) and $ENV{'UNSERMAKE'} =~ /\//);
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-# new compatible: if it says 'yes', use the one from path
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-$unsermake = which('unsermake') if ($ENV{'UNSERMAKE'} ne 'no');
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-
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-($automake_suffix) = $automake =~ /.*automake(.*)$/;
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-
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-# Find matching automake companions.
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-$aclocal = findProgram('aclocal', $automake_suffix);
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-
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-# Use unsermake if we found it.
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-$automake = "$unsermake -c" if ($unsermake and $aclocal);
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-
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$which = findWhich();
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-# Make sure we have all of the needed programs.
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-for $i (qw'autoconf autoheader autom4te automake aclocal')
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-{
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- unless(${$i})
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- {
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- print STDERR "# Unable to find $i!!\n";
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- }
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-}
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-
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# Print results in eval-able form.
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print <<EOF;
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-AUTOCONF="$autoconf"
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-AUTOHEADER="$autoheader"
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-AUTOM4TE="$autom4te"
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+AUTOCONF="autoconf"
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+AUTOHEADER="autoheader"
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+AUTOM4TE="autom4te"
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-AUTOMAKE="$automake"
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-ACLOCAL="$aclocal"
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+AUTOMAKE="automake"
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+ACLOCAL="aclocal"
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WHICH="$which"
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@@ -252,5 +63,3 @@
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EOF
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exit 0;
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-
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-# vim: set noet ts=8 sw=4:
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