[SCM] gdal branch, master, updated. upstream/1.10.1+dfsg-93-g1d67b0d

Bas Couwenberg sebastic at xs4all.nl
Sat Jan 11 05:38:59 UTC 2014


The following commit has been merged in the master branch:
commit 8ea8c8900b80d1bfdb4f061482398721689e6480
Author: Bas Couwenberg <sebastic at xs4all.nl>
Date:   Sat Jan 11 04:37:48 2014 +0100

    Add script to assist with symbols file updates.

diff --git a/debian/README.source b/debian/README.source
index 7a1522a..acc1780 100644
--- a/debian/README.source
+++ b/debian/README.source
@@ -74,4 +74,10 @@ So:
         - re-upload in unstable if possible with new symbols and after
           removing the -c0 arg.
 
+    You can use the gdal-symbols.pl script to assist with symbols file updates.
+    It automates most of the work required to collect symbols for all
+    architectures using packages downloaded from snapshot.debian.org,
+    and optionally update the current symbols file with the newly generated
+    ones.
+
  -- Francesco Paolo Lovergine <frankie at debian.org>  Thu, 23 Feb 2012 22:45:56 +0200
diff --git a/debian/changelog b/debian/changelog
index 8bc4c05..8296b8d 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -2,6 +2,7 @@ gdal (1.10.1+dfsg-3) UNRELEASED; urgency=low
 
   * Add patch to fix FTBFS on hurd-i386 which doesn't defined PATH_MAX.
   * Update symbols files for version 1.10.1.
+  * Add script to assist with symbols file updates.
 
  -- Bas Couwenberg <sebastic at xs4all.nl>  Fri, 10 Jan 2014 20:19:50 +0100
 
diff --git a/debian/gdal-symbols.pl b/debian/gdal-symbols.pl
new file mode 100755
index 0000000..0f9bb68
--- /dev/null
+++ b/debian/gdal-symbols.pl
@@ -0,0 +1,938 @@
+#!/usr/bin/perl -w
+#
+# Automate symbols file updates using packages from snapshot.debian.org.
+#
+# Required dependencies:
+#
+# libfile-slurp-perl libwww-perl liburi-perl
+# libjson-perl libdpkg-perl libterm-prompt-perl
+# devscripts dpkg dpkg-dev binutils
+# diffutils patch coreutils
+#
+# Copyright (C) 2013-2014, Bas Couwenberg <sebastic at xs4all.nl>
+# 
+# This library is free software; you can redistribute it and/or modify
+# it under the same terms as Perl itself, either Perl version 5.8.5 or,
+# at your option, any later version of Perl 5 you may have available.
+#
+
+use strict;
+use File::Basename;
+use File::Copy;
+use File::Slurp;
+use Getopt::Long qw(:config bundling no_ignore_case);
+use HTTP::Request::Common;
+use LWP::UserAgent;
+use URI::Escape;
+use JSON;
+use Dpkg::Version;
+use Term::Prompt;
+
+$|=1;
+
+my $package = 'libgdal1h';
+my $pkgdir  = 'binary-'.$package.'/';
+
+our $ua = LWP::UserAgent->new(agent => basename($0));
+
+my %cfg = (
+	    package    => $package,
+	    version    => 'latest',
+	    debsnap    => '/usr/bin/debsnap',
+	    dpkgdeb    => '/usr/bin/dpkg-deb',
+	    gensymbols => '/usr/bin/dpkg-gensymbols',
+	    cppfilt    => '/usr/bin/c++filt',
+	    objdump    => '/usr/bin/objdump',
+	    diff       => '/usr/bin/diff',
+	    patch      => '/usr/bin/patch',
+	    sha512sum  => '/usr/bin/sha512sum',
+	    pkgdir     => $pkgdir,
+	    debian     => 'debian/',
+	    force      => 0,
+	    no_diff    => 0,
+	    no_prompt  => 0,
+	    yes        => 0,
+	    verbose    => 0,
+	    help       => 0,
+	  );
+
+my $result = GetOptions(
+			 'p|package=s'    => \$cfg{package},
+			 'V|version=s'    => \$cfg{version},
+			 'S|debsnap=s'    => \$cfg{debsnap},
+			 'E|dpkgdeb=s'    => \$cfg{dpkgdeb},
+			 'G|gensymbols=s' => \$cfg{gensymbols},
+			 'C|cppfilt=s'    => \$cfg{cppfilt},
+			 'I|diff=s'       => \$cfg{diff},
+			 'P|patch=s'      => \$cfg{patch},
+			 'H|sha512sum=s'  => \$cfg{sha512sum},
+			 'D|pkgdir=s'     => \$cfg{pkgdir},
+			 'd|debian=s'     => \$cfg{debian},
+			 'f|force'        => \$cfg{force},
+			 'no-diff'        => \$cfg{no_diff},
+			 'no-prompt'      => \$cfg{no_prompt},
+			 'y|yes'          => \$cfg{yes},
+			 'v|verbose'      => \$cfg{verbose},
+			 'h|help'         => \$cfg{help},
+		       );
+
+if(!$result || $cfg{help} || !$cfg{package} || !$cfg{debian}) {
+	print STDERR "\n" if(!$result);
+
+	print "Usage: ". basename($0). " [OPTIONS]\n\n";
+	print "Options:\n";
+	print "-p, --package <NAME>      Library binary package name    ($cfg{package})\n";
+	print "-V, --version <STRING>    Library binary package version ($cfg{version})\n";
+	print "-S, --debsnap <PATH>      Path to debsnap                ($cfg{debsnap})\n";
+	print "-E, --dpkgdeb <PATH>      Path to dpkg-deb               ($cfg{dpkgdeb})\n";
+	print "-G, --gensymbols <PATH>   Path to dpkg-gensymbols        ($cfg{gensymbols})\n";
+	print "-O, --objdump <PATH>      Path to objdump                ($cfg{objdump})\n";
+	print "-C, --cppfilt <PATH>      Path to c++filt                ($cfg{cppfilt})\n";
+	print "-I, --diff <PATH>         Path to diff                   ($cfg{diff})\n";
+	print "-P, --patch <PATH>        Path to patch                  ($cfg{patch})\n";
+	print "-H, --sha512sum <PATH>    Path to sha512sum              ($cfg{sha512sum})\n";
+	print "-D, --pkgdir <PATH>       Path to downloaded packages    ($cfg{pkgdir})\n";
+	print "-d, --debian <PATH>       Path to debian/ directory      ($cfg{debian})\n";
+	print "    --no-diff             Don't display diff for new symbols files\n";
+	print "    --no-prompt           Don't prompt to select symbols, update manually\n";
+	print "-y, --yes                 Default to yes on prompts\n";
+	print "-f, --force               Force writing into existing package directory\n";
+	print "-v, --verbose             Enable verbose output\n";
+	print "-h, --help                Display this usage information\n";
+
+	exit 1;
+}
+
+if(!-x $cfg{debsnap}) {
+	print "Error: Cannot execute debsnap: $cfg{debsnap}\n";
+	print "Use --debsnap to override the path and/or install the devscripts package.\n";
+	exit 1;
+}
+if(!-x $cfg{dpkgdeb}) {
+	print "Error: Cannot execute dpkg-deb: $cfg{dpkgdeb}\n";
+	print "Use --dpkg-deb to override the path and/or install the dpkg package.\n";
+	exit 1;
+}
+if(!-x $cfg{gensymbols}) {
+	print "Error: Cannot execute dpkg-gensymbols: $cfg{gensymbols}\n";
+	print "Use --gensymbols to override the path and/or install the dpkg-dev package.\n";
+	exit 1;
+}
+if(!-x $cfg{objdump}) {
+	print "Error: Cannot execute objdump: $cfg{objdump}\n";
+	print "Use --objdump to override the path and/or install the binutils package.\n";
+	exit 1;
+}
+if(!-x $cfg{cppfilt}) {
+	print "Error: Cannot execute c++filt: $cfg{cppfilt}\n";
+	print "Use --cppfilt to override the path and/or install the binutils package.\n";
+	exit 1;
+}
+if(!-x $cfg{diff}) {
+	print "Error: Cannot execute diff: $cfg{diff}\n";
+	print "Use --diff to override the path and/or install the diffutils package.\n";
+	exit 1;
+}
+if(!-x $cfg{patch}) {
+	print "Error: Cannot execute patch: $cfg{patch}\n";
+	print "Use --patch to override the path and/or install the patch package.\n";
+	exit 1;
+}
+if(!-x $cfg{sha512sum}) {
+	print "Error: Cannot execute sha512sum: $cfg{sha512sum}\n";
+	print "Use --sha512sum to override the path and/or install the coreutils package.\n";
+	exit 1;
+}
+
+if(!-r $cfg{debian} || !-w $cfg{debian}) {
+	print "Error: Cannot read/write directory: $cfg{debian}\n";
+	exit 1;
+}
+if(-e $cfg{pkgdir} && !$cfg{force}) {
+	print "Error: Directory already exists: $cfg{pkgdir} (use --force to override)\n";
+	exit 1;
+}
+
+$cfg{debian} .= '/' if(substr($cfg{debian}, -1, 1) ne '/');
+$cfg{pkgdir} .= '/' if(substr($cfg{pkgdir}, -1, 1) ne '/');
+
+if(!$cfg{version} || $cfg{version} eq 'latest') {
+	$cfg{version} = latest_snapshot();
+	if(!$cfg{version}) {
+		print "Error: Failed to determine latest version for: $cfg{package}\n";
+		exit 1;
+	}
+}
+
+my %symbols = ();
+
+download_packages();
+unpack_packages();
+create_new_symbols();
+create_patch_files();
+patch_files();
+split_files();
+compare_symbols();
+#create_complete_symbols();
+
+################################################################################
+# Subroutines
+
+sub latest_snapshot {
+	my $url = 'http://snapshot.debian.org/mr/binary/'.uri_escape($cfg{package}).'/';
+	my $req = HTTP::Request->new(GET => $url);
+
+	print "Retrieving URL: $url ... " if($cfg{verbose});
+	my $res = $ua->request($req);
+	if($res->is_success) {
+		print "Success\n" if($cfg{verbose});
+
+		my $json = $res->content;
+		my $data = decode_json($json);
+
+		my @versions = ();
+
+		if($data->{result} && @{$data->{result}}) {
+			print "Checking versions...\n" if($cfg{verbose});
+
+			foreach my $v (sort { version_compare($a->{binary_version}, $b->{binary_version}) } @{$data->{result}}) {
+				push @versions, $v->{binary_version};
+			}
+
+			print "Latest version: $versions[-1]\n" if($cfg{verbose});
+		}
+
+		print "\n" if($cfg{verbose});
+
+		return $versions[-1];
+	}
+	else {
+		print "Failed!\n" if($cfg{verbose});
+		print "Error: Failed to retrieve URL! ($url)\n";
+		print "HTTP Status: ".$res->code." ".$res->message."\n";
+
+		return;
+	}
+}
+
+sub download_packages {
+	my $dir = $cfg{pkgdir};
+
+	if(!-e $cfg{pkgdir} || $cfg{force}) {
+		print "Downloading binary packages for: $cfg{package}, version: $cfg{version}, into: $cfg{pkgdir}\n";
+
+		my @cmd = ();
+
+		push @cmd, $cfg{debsnap};
+		push @cmd, ('--destdir', $cfg{pkgdir});
+		push @cmd, '--force'     if($cfg{force});
+		push @cmd, '--verbose'   if($cfg{verbose});
+		push @cmd, '--binary';
+		push @cmd, $cfg{package};
+		push @cmd, $cfg{version};
+
+		print "Exec: @cmd\n" if($cfg{verbose});	
+
+		my $exit = system(@cmd) >> 8;
+		if($exit != 0) {
+			print "Error: Command failed: @cmd ($exit)\n";
+			exit $exit;
+		}
+
+		print "\n" if($cfg{verbose});
+	}
+	else {
+		print "Error: Directory already exists: $dir (use --force to override)\n";
+		return;
+	}
+}
+
+sub unpack_packages {
+	my $dir = $cfg{pkgdir};
+
+	if(-r $dir && -w $dir) {
+		print "Extracting downloaded packages...\n" if($cfg{verbose});
+
+		opendir(DIR, $dir) || die "Error: Cannot open directory: $dir ($!)";
+		while(readdir DIR) {
+			# libgdal1h_1.10.1+dfsg-1_amd64.deb
+			if(/^($cfg{package})_(\S+)_(\S+)\.deb$/) {
+				my $pkg     = $1;
+				my $version = $2;
+				my $arch    = $3;
+				my $file    = $dir.$_;
+				my $pkgdir  = $dir.$pkg.'_'.$version.'_'.$arch.'/';
+
+				next if($arch eq 'common');
+				next if($version ne $cfg{version} && $cfg{version} ne 'all');
+				next if(-r $pkgdir);
+
+				# dpkg-deb -R libgdal1h_1.10.1+dfsg-1_amd64.deb libgdal1h_1.10.1+dfsg-1_amd64
+
+				my @cmd = (
+					    $cfg{dpkgdeb},
+					    '--raw-extract',
+					    $file,
+					    $pkgdir,
+					  );
+
+				print "Exec: @cmd\n" if($cfg{verbose});
+
+				my $exit = system(@cmd) >> 8;
+				if($exit != 0) {
+					print "Error: Command failed: @cmd ($exit)\n";
+					exit $exit;
+				}
+			}	
+		}
+		closedir DIR;
+
+		print "\n" if($cfg{verbose});
+	}
+	else {
+		print "Error: Cannot read/write directory: $dir\n";
+		return;
+	}
+}
+
+sub create_complete_symbols {
+	my $dir = $cfg{debian};
+
+	if(-r $dir && -w $dir) {
+		my $file = $dir.$cfg{package}.'.symbols.common';
+		if(!-r $file) {
+			print "Error: Cannot read common symbols file: $file\n";
+			return;
+		}
+
+		print "Reading common symbols file: $file\n" if($cfg{verbose});
+
+		my $common = read_file($file);
+
+		opendir(DIR, $dir) || die "Error: Cannot open directory: $dir ($!)";
+		while(readdir DIR) {
+			# libgdal1h.symbols.amd64
+			if(/^$cfg{package}.symbols.(\S+)$/) {
+				my $arch = $1;
+
+				next if($arch eq 'common');
+				next if($arch =~ /\.(new|diff|filt|patch|c\+\+|common|complete)$/);
+					
+				my $file = $dir.$_;
+
+				print "Reading $arch symbols file: $file\n" if($cfg{verbose});
+
+				my $data = '';
+				foreach(read_file($file)) {
+					# #include "libgdal1h.symbols.common"
+					if(/^#include "$cfg{package}.symbols.common"\s*$/) {
+						print "Including common symbols\n" if($cfg{verbose});
+
+						$data .= $common;
+					}
+					else {
+						$data .= $_;
+					}
+				}
+
+				$file .= '.complete';
+
+				print "Saving complete symbols file: $file\n" if($cfg{verbose});
+
+				write_file($file, $data);
+
+				print "\n" if($cfg{verbose});
+			}
+		}
+		closedir DIR;
+	}
+	else {
+		print "Error: Cannot read/write directory: $dir\n";
+		return;
+	}
+}
+
+sub create_new_symbols {
+	my $dir = $cfg{debian};
+
+	if(-r $dir && -w $dir) {
+		opendir(DIR, $dir) || die "Error: Cannot open directory: $dir ($!)";
+		while(readdir DIR) {
+			# libgdal1h.symbols.amd64
+			if(/^($cfg{package}).symbols.(\S+)$/) {
+				my $pkg  = $1;
+				my $arch = $2;
+				my $file = $dir.$_;
+
+				next if($arch eq 'common');
+				next if($arch =~ /\.(new|diff|filt|patch|c\+\+|common|complete)$/);
+
+				my $version = '';
+				my $library = '';
+
+				my $pkg_dir = $cfg{pkgdir};
+				if(-r $pkg_dir) {
+					print "Looking for $arch under: $pkg_dir\n" if($cfg{verbose});
+
+					opendir(PKGDIR, $pkg_dir) || die "Error: Cannot open package directory: $pkg_dir ($!)";
+					while(readdir PKGDIR) {
+						# libgdal1h_1.10.1+dfsg-1_armel
+						if(/^${pkg}_(\S+?)_${arch}$/) {
+							print "Package directory: $_\n" if($cfg{verbose});
+
+							$version = $1;
+							
+							next if($version ne $cfg{version});
+
+							$version =~ s/(\+dfsg)?-\d+$//;
+
+							$library = find_library($pkg_dir.$_.'/usr/lib/');
+
+							last;
+						}
+					}
+					closedir PKGDIR;
+				}
+				else {
+					print "Error: Cannot read package directory: $pkg_dir\n";
+					print "\n" if($cfg{verbose});
+					return;
+				}
+
+				if(!$version) {
+					print "Error: Cannot determine package version!\n";
+					print "\n" if($cfg{verbose});
+					next;
+				}
+
+				if(!$library) {
+					print "Error: Cannot find library!\n";
+					print "\n" if($cfg{verbose});
+					return;
+				}
+
+				my $output = $file.'.new';
+				my $diff   = $file.'.diff';
+
+				# dpkg-gensymbols -plibgdal1h -aarmel -v1.10.1 -Idebian/libgdal1h.symbols.armel -Odebian/libgdal1h.symbols.armel.new -ebinary-libgdal1h/libgdal1h_1.10.1+dfsg-1_armel/usr/lib/libgdal.so.1.17.1
+
+				my @cmd = (
+					    $cfg{gensymbols},
+					    '-p'.$pkg,
+					    '-a'.$arch,
+					    '-v'.$version,
+					    '-I'.$file,
+					    '-O'.$output,
+					    '-e'.$library,
+					  );
+
+				print "Exec: @cmd > $diff 2>&1\n" if($cfg{verbose});
+
+				`@cmd > $diff 2>&1`;
+
+
+				# cat debian/libgdal1h.symbols.armel.new | c++filt > debian/libgdal1h.symbols.armel.new.filt
+
+				my $filt = $output.'.filt';
+
+				print "Exec: cat $output | $cfg{cppfilt} > $filt 2>&1\n" if($cfg{verbose});
+
+				`cat $output | $cfg{cppfilt} > $filt 2>&1`;
+
+				# libgdal.so.1 libgdal1h #MINVER# 
+				# #include "libgdal1h.symbols.common"
+
+				my $data = '';
+
+				my $i = 0;
+				foreach(read_file($filt)) {
+					if($i == 0) {
+						$_ .= "#include \"${package}.symbols.common\"\n";
+					}
+					$data .= $_;
+					$i++;
+				}
+
+				write_file($filt, $data);
+
+				print "\n" if($cfg{verbose});
+			}	
+		}
+		closedir DIR;
+	}
+	else {
+		print "Error: Cannot read/write directory: $dir\n";
+		print "\n" if($cfg{verbose});
+		return;
+	}
+}
+
+sub find_library {
+	my $dir   = shift;
+	my $depth = shift;
+	   $depth = 0 if(!$depth);
+
+	my $max_depth = 5;
+
+	if($depth == $max_depth) {
+		print "Not looking further, maximum depth reached: $depth\n";
+		return;
+	}
+
+	my $library = '';
+
+	if(-r $dir) {
+		print "Reading directory: $dir\n" if($cfg{verbose});
+
+		opendir(my $dh, $dir) || die "Error: Cannot open directory: $dir ($!)";
+		while(readdir $dh) {
+			next if(/^\.{1,2}$/);
+
+			my $entry = $dir.$_;
+
+			if(-d $entry) {
+				$library = find_library($entry.'/', $depth+1);
+			}
+			elsif(-f $entry && $entry =~ /\.so\.\d+\.\d+/) {
+				$library = $entry;
+				last;
+			}
+		}
+		closedir $dh;
+
+		print "Library: $library\n" if($cfg{verbose});
+	}
+	else {
+		print "Error: Cannot read directory: $dir\n";
+		return;
+	}
+
+	return $library;
+}
+
+sub create_patch_files {
+	# Create c++filt symbols files
+
+	my $dir = $cfg{debian};
+
+	if(-r $dir && -w $dir) {
+		opendir(DIR, $dir) || die "Error: Cannot open directory: $dir ($!)";
+		while(readdir DIR) {
+			# libgdal1h.symbols.amd64
+			if(/^($cfg{package}).symbols.(\S+)$/) {
+				my $pkg  = $1;
+				my $arch = $2;
+				my $file = $dir.$_;
+
+				next if($arch eq 'common');
+				next if($arch =~ /\.(new|diff|filt|patch|c\+\+|common|complete)$/);
+
+				my $diff_file  = $file.'.diff';
+				my $new_file   = $file.'.new';
+				my $filt_file  = $file.'.new.filt';
+				my $patch_file = $file.'.new.patch';
+
+				if(-r $diff_file && -r $new_file && -r $filt_file) {
+					# Mark C++ symbols
+
+					my @cmd = (
+						    $cfg{diff},
+						    '-u',
+						    $new_file,
+						    $filt_file,
+						  );
+
+					my $data = '';
+					my $old  = '';
+					my $new  = '';
+					my $tmp  = '';
+
+					foreach(`@cmd`) {
+						# --- debian/libgdal1h.symbols.amd64.new  2013-12-14 00:18:32.000000000 +0100
+						if(/^\-\-\- (\S+\s+\d{4}.*?\S)\s*$/) {
+							$old = $1;
+
+							$_ = '';
+						}
+						# +++ debian/libgdal1h.symbols.amd64.new.filt     2013-12-14 01:44:01.000000000 +0100
+						elsif(/^\+\+\+ (\S+\s+\d{4}.*?\S)\s*$/) {
+							$new = $1;
+
+							$_ = '--- '. $new."\n"
+							   . '+++ '. $old."\n"
+							   ;
+						}
+						# + VRTSourcedRasterBand::ComputeRasterMinMax(int, double*)@GDAL_1.8 1.10.1
+						elsif(/^\+ (.*?) (\d+\.\d+\.\d+\S*)\s*$/) {
+							# ignore
+							$_ = '+ (c++)"'.$1.'" '.$2."\n";
+						}
+
+						$data .= $_;
+					}
+
+					print "Saving rewritten patch: $patch_file\n" if($cfg{verbose});
+
+					write_file($patch_file, $data);
+				}
+				else {
+					print "Error: Cannot read all files: $diff_file, $new_file, $filt_file\n";
+					print `ls -l $diff_file $new_file $filt_file`;
+					next;
+				}
+			}
+		}
+		closedir DIR;
+	}
+	else {
+		print "Error: Cannot read/write directory: $dir\n";
+		return;
+	}
+}
+
+sub patch_files {
+	# Apply c++filt symbols patches
+
+	my $dir = $cfg{debian};
+
+	if(-r $dir && -w $dir) {
+		opendir(DIR, $dir) || die "Error: Cannot open directory: $dir ($!)";
+		while(readdir DIR) {
+			# libgdal1h.symbols.amd64
+			if(/^($cfg{package}).symbols.(\S+)$/) {
+				my $pkg  = $1;
+				my $arch = $2;
+				my $file = $dir.$_;
+
+				next if($arch eq 'common');
+				next if($arch =~ /\.(new|diff|filt|patch|c\+\+|common|complete)$/);
+
+				my $diff_file  = $file.'.diff';
+				my $new_file   = $file.'.new';
+				my $filt_file  = $file.'.new.filt';
+				my $patch_file = $file.'.new.patch';
+
+				if(-r $diff_file && -r $new_file && -r $filt_file && -r $patch_file) {
+					# Mark C++ symbols
+
+					my @cmd = (
+						    $cfg{patch},
+						    '-p1',
+						    '-i'.$patch_file,
+						    $new_file,
+						  );
+
+					print "Exec: @cmd\n" if($cfg{verbose});
+
+					my $exit = system(@cmd) >> 8;
+					if($exit != 0) {
+						print "Error: Command failed: @cmd ($exit)\n";
+						exit $exit;
+					}
+
+					@cmd = ('rm', $patch_file);
+
+					print "Exec: @cmd\n" if($cfg{verbose});
+
+					$exit = system(@cmd) >> 8;
+					if($exit != 0) {
+						print "Error: Command failed: @cmd ($exit)\n";
+						exit $exit;
+					}
+
+					print "\n" if($cfg{verbose});
+				}
+				else {
+					print "Error: Cannot read all files: $diff_file, $new_file, $filt_file, $patch_file\n";
+					print "\n" if($cfg{verbose});
+					next;
+				}
+			}
+		}
+		closedir DIR;
+	}
+	else {
+		print "Error: Cannot read/write directory: $dir\n";
+		print "\n" if($cfg{verbose});
+		return;
+	}
+}
+
+sub split_files {
+	# Split common and C++ symbols into seperate files.
+
+	my $dir = $cfg{debian};
+
+	if(-r $dir && -w $dir) {
+		opendir(DIR, $dir) || die "Error: Cannot open directory: $dir ($!)";
+		while(readdir DIR) {
+			# libgdal1h.symbols.amd64
+			if(/^($cfg{package}).symbols.(\S+)$/) {
+				my $pkg  = $1;
+				my $arch = $2;
+				my $file = $dir.$_;
+
+				next if($arch eq 'common');
+				next if($arch =~ /\.(new|diff|filt|patch|c\+\+|common|complete)$/);
+
+				my $diff_file  = $file.'.diff';
+				my $new_file   = $file.'.new';
+				my $filt_file  = $file.'.new.filt';
+				my $patch_file = $file.'.new.patch';
+
+				if(-r $diff_file && -r $new_file && -r $filt_file && !-r $patch_file) {
+					print "Splitting files for: $file\n" if($cfg{verbose});
+
+					my $common = '';
+					my $cplus  = '';
+
+					foreach(read_file($new_file)) {
+						if(/\(c\+\+\)/ || !/^ /) {
+							$cplus  .= $_;
+						}
+						else {
+							$common .= $_;
+						}
+					}
+
+					my $common_file = $new_file.'.common';
+					my $cplus_file  = $new_file.'.c++';
+
+					write_file($common_file, $common);
+					write_file($cplus_file,  $cplus);
+				}
+				else {
+					print "Error: Cannot read all files: $diff_file, $new_file, $filt_file, $patch_file\n";
+					next;
+				}
+			}
+		}
+		closedir DIR;
+
+		print "\n" if($cfg{verbose});
+	}
+	else {
+		print "Error: Cannot read/write directory: $dir\n";
+		return;
+	}
+}
+
+sub compare_symbols {
+	my $dir = $cfg{debian};
+
+	if(-r $dir && -w $dir) {
+		my %checksum = ();
+
+		my $arch = 'common';
+		my $file = $dir.$cfg{package}.'.symbols.'.$arch;
+
+		print "Comparing symbols for: $file\n" if($cfg{verbose});
+
+		if(-r $file) {
+			my @items = ();
+			my @files = ();
+
+			chomp(my $sha512sum = `$cfg{sha512sum} "$file" | cut -d' ' -f1`);
+
+			print "$sha512sum  $file\n" if($cfg{verbose});
+
+			$checksum{$arch} = $sha512sum;
+
+			push @items, "$sha512sum  $file";
+			push @files, $file;
+
+			my $identical = 1;
+			my @different = ();
+
+			opendir(DIR, $dir) || die "Error: Cannot open directory: $dir ($!)";
+			while(readdir DIR) {
+				# libgdal1h.symbols.amd64.new.common
+				if(/^($cfg{package}).symbols.(\S+).new.common$/) {
+					my $pkg2  = $1;
+					my $arch2 = $2;
+					my $file2 = $dir.$_;
+
+					chomp(my $sha512sum = `$cfg{sha512sum} "$file2" | cut -d' ' -f1`);
+
+					print "$sha512sum  $file2\n" if($cfg{verbose});
+
+					$checksum{$arch2} = $sha512sum;
+
+					push @items, "$sha512sum  $file2";
+					push @files, $file2;
+
+					if($checksum{common} ne $sha512sum) {
+						$identical = 0;
+
+						push @different, $file2;
+
+						$items[-1] .= " *";
+					}
+				}
+			}
+			closedir DIR;
+
+			if(@different) {
+				print "\n" if($cfg{verbose});
+
+				if(!$cfg{no_diff}) {
+					foreach my $file2 (@different) {
+						my $old = $file;
+						my $new = $file2;
+	
+						my @cmd = (
+							    $cfg{diff},
+							    '-u',
+							    $old,
+							    $new,
+							  );
+	
+						print "Exec: @cmd\n" if($cfg{verbose});
+	
+						my $exit = system(@cmd) >> 8;
+	
+						print "Exit: $exit\n" if($cfg{verbose});
+					}
+				}
+			}
+
+			if($identical) {
+				print "Current $arch symbols are identical to the new symbols, no update required.\n" if($cfg{verbose});
+			}
+			else {
+				print "New $arch symbols different from the current symbols, update required!\n" if($cfg{verbose});
+
+				if(!$cfg{no_prompt}) {
+					my $result = prompt(
+							     'm',
+							     {
+							       prompt => "Select new symbols file to update current symbols file with:",
+							       title  => "Update symbols file $file",
+							       items  => \@items,
+							       order  => 'down',
+							       cols   => 1,
+							     },
+							     "[0]",
+							     0,
+							   );
+
+					if($result) {
+						print "New common symbols file selected: $items[$result]\n" if($cfg{verbose});
+
+						my $file1 = $files[$result];
+						my $file2 = $file;
+
+						if(-r $file1 && -w $file2) {
+							print "Copy: $file1 -> $file2\n" if($cfg{verbose});
+
+							copy($file1, $file2) || die "Error: Failed to copy $file1 to $file2 ($!)\n";
+						}
+						else {
+							print "Error: Cannot read $file1 and/or write $file2\n";
+							return;
+						}
+					}
+					else {
+						print "Current common symbols file selected, skipping update.\n" if($cfg{verbose});
+					}
+				}
+			}
+
+			print "\n" if($cfg{verbose});
+		}
+
+		opendir(DIR, $dir) || die "Error: Cannot open directory: $dir ($!)";
+		while(readdir DIR) {
+			# libgdal1h.symbols.amd64
+			if(/^($cfg{package}).symbols.(\S+)$/) {
+				my $pkg  = $1;
+				my $arch = $2;
+				my $file = $dir.$_;
+
+				next if($arch eq 'common');
+				next if($arch =~ /\.(new|diff|filt|patch|c\+\+|common|complete)$/);
+
+				print "Comparing symbols for: $file\n" if($cfg{verbose});
+
+				my $old = $file;
+				my $new = $file.'.new.c++';
+
+				if(!-r $new) {
+					print "Missing new $arch symbols, likely needs update later.\n" if($cfg{verbose});
+				}
+				else {
+					chomp(my $old_sha512sum = `$cfg{sha512sum} "$old" 2> /dev/null | cut -d' ' -f1`);
+					chomp(my $new_sha512sum = `$cfg{sha512sum} "$new" 2> /dev/null | cut -d' ' -f1`);
+
+					print "$old_sha512sum  $old\n" if($cfg{verbose});
+					print "$new_sha512sum  $new\n" if($cfg{verbose});
+
+					if($old_sha512sum eq $new_sha512sum) {
+						print "Current symbols are identical to the new $arch symbols, no update required.\n" if($cfg{verbose});
+					}
+					else {
+						if(!$cfg{no_diff}) {
+							my @cmd = (
+							    $cfg{diff},
+									    '-u',
+								    $old,
+								    $new,
+								  );
+			
+							print "Exec: @cmd\n" if($cfg{verbose});
+			
+							my $exit = system(@cmd) >> 8;
+							
+							print "Exit: $exit\n" if($cfg{verbose});
+	
+							print `@cmd | diffstat`;
+						}
+	
+						print "New $arch symbols different from the current symbols, update required!\n" if($cfg{verbose});
+
+						if(!$cfg{no_prompt}) {
+							my $help    = $cfg{yes} ? "Y/n" : "y/N";
+							my $default = $cfg{yes} ? "Y"   : "N";
+
+							my $result = prompt(
+									     'y',
+									     "Update symbols file for $arch?",
+									     $help,
+									     $default,
+									   );
+		
+							if($result) {
+								my $file1 = $new;
+								my $file2 = $old;
+		
+								if(-r $file1 && -w $file2) {
+									print "Copy: $file1 -> $file2\n" if($cfg{verbose});
+
+									copy($file1, $file2) || die "Error: Failed to copy $file1 to $file2 ($!)\n";
+								}
+								else {
+									print "Error: Cannot read $file1 and/or write $file2\n";
+									return;
+								}
+							}
+							else {
+								print "Skipping update.\n" if($cfg{verbose});
+							}
+						}
+					}
+				}
+		
+				print "\n" if($cfg{verbose});
+			}
+		}
+		closedir DIR;
+
+		print "\n" if($cfg{verbose});
+	}
+	else {
+		print "Error: Cannot read/write directory: $dir\n";
+		print "\n" if($cfg{verbose});
+		return;
+	}
+}
+

-- 
GDAL/OGR library and tools



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