From: Richard W.M. Jones <"Richard W.M. Jones "> Date: Wed, 11 Feb 2009 11:16:06 +0000 (+0000) Subject: Initial version of CrossReport program. X-Git-Url: http://git.annexia.org/?a=commitdiff_plain;h=5a4e88c28b4724b9afad68a96c47206424b53a86;p=fedora-mingw.git Initial version of CrossReport program. --- diff --git a/crossreport/COPYING b/crossreport/COPYING new file mode 100644 index 0000000..e77696a --- /dev/null +++ b/crossreport/COPYING @@ -0,0 +1,339 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 675 Mass Ave, Cambridge, MA 02139, USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. 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See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) 19yy name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + , 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Library General +Public License instead of this License. diff --git a/crossreport/README b/crossreport/README new file mode 100644 index 0000000..c1ee907 --- /dev/null +++ b/crossreport/README @@ -0,0 +1,15 @@ +CrossReport is a tool which developers can run against their Linux +binaries, which analyzes the APIs those binaries are using, and +estimates how difficult it will be to cross-compile the binaries for +Windows (using Fedora MinGW). + +This tool was written by Richard W.M. Jones (rjones@redhat.com). + +Use 'mingw32-crossreport --help' for instructions, or read the man page. + +Use 'update-crossreport-db.pl' to update the database file. *NOTE* you +should have all the mingw32-* packages installed on the current +machine when you run this. So: + + # yum install mingw32-* + $ ./update-crossreport-db.pl diff --git a/crossreport/crossreport.db b/crossreport/crossreport.db new file mode 100644 index 0000000..e9a9b23 Binary files /dev/null and b/crossreport/crossreport.db differ diff --git a/crossreport/crossreport.pl b/crossreport/crossreport.pl new file mode 100755 index 0000000..756adaa --- /dev/null +++ b/crossreport/crossreport.pl @@ -0,0 +1,398 @@ +#!/usr/bin/perl -w +# +# CrossReport - analysis tool. +# Copyright (C) 2009 Red Hat Inc. +# Written by Richard W.M. Jones , +# http://fedoraproject.org/wiki/MinGW +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or (at +# your option) any later version. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + +use strict; + +use Getopt::Long; +use Pod::Usage; +use GDBM_File; +use POSIX qw(strftime floor); + +=pod + +=head1 NAME + +CrossReport - Analysis tool to help cross-compilation to Windows. + +=head1 SYNOPSIS + + mingw32-crossreport [options] /path/to/linuxbinary + +=head1 DESCRIPTION + +CrossReport is a tool to help you analyze the APIs used by a compiled +Linux program, in order to work out the effort required to +cross-compile that program for Windows, using the Fedora MinGW +cross-compiler. + +The simplest way to use it is to point it at an existing Linux binary, +and then read the generated report. + +What it does in more detail: It looks at the libraries and API calls +used by the Linux binary, and compares them to the libraries and API +calls that we currently support under the Fedora MinGW cross-compiler. +It then works out what is missing, and produces a report suggesting +the amount of work that needs to be done to port the program. For +example, whether whole libraries need to be ported first, and/or how +to substitute individual calls to work on Windows. + +=head1 EXAMPLE + +Assuming that the excellent vector graphics editor Inkscape +(L) is installed, you could do: + + mingw32-crossreport /usr/bin/inkscape > inkscape-report.txt + less inkscape-report.txt + +=head1 SHORTCOMINGS + +The report is only a general guide. CrossReport contains a lot of +knowledge about common Linux calls and APIs, but does not know about +every possible library. + +=head1 DATABASE + +The program relies on a database of MinGW APIs. The default location +for this database is C or the +same file in the current working directory. If the database cannot be +found in either location, the program will fail with an error message. + +The database is updated regularly and distributed with CrossReport. +To get the best quality report, make sure you are running a recent +version of the program. + +=cut + +my $help = ''; +my $man = ''; +my $verbose = ''; +my $binary = ''; + +sub get_options +{ + my $result = GetOptions ( + "help|?" => \$help, + "man" => \$man, + "verbose" => \$verbose, + ); + die "crossreport: use --help for information about command line options\n" + unless $result; + + pod2usage(1) if $help; + pod2usage(-exitstatus => 0, -verbose => 2) if $man; + + die "crossreport: no binary specified: use --help for more help\n" + if @ARGV != 1; + + $binary = $ARGV[0]; +} + +my %symbols; + +sub get_db +{ + foreach ("/usr/local/share/crossreport/crossreport.db", + "/usr/share/crossreport/crossreport.db", + "crossreport.db") { + if (-f $_) { + tie %symbols, "GDBM_File", $_, &GDBM_READER, 0; + return; + } + } + die "Could not find crossreport.db\n" +} + +# Get the symbols (API calls) used by the binary. + +my %api = (); # Count how each API is used. +my @unresolved = (); # List of unresolved symbols. + +sub get_symbols +{ + my $cmd = "nm -D $binary | grep ' U ' | awk '{print \$2}' | c++filt"; + open CMD, "$cmd |" or die "$cmd: $!"; + foreach () { + chomp; + if (exists $symbols{$_}) { + my $rpm_name = $symbols{$_}; + $api{$rpm_name} = 0 unless exists $api{$rpm_name}; + $api{$rpm_name}++; + } else { + push @unresolved, $_; + } + } + close CMD; +} + +#---------------------------------------------------------------------- +# Reporting section. + +# This hash contains our area expertise about some unresolved symbols. + +my $suggest_portability_library = + "To get more reliable semantics, we suggest you use a portability\n". + "library such as Gnulib, glib2, QtCore, etc.\n"; +my $warning_about_read_write_on_sockets = + "If you are using read/write on sockets, then this won't work on\n". + "Windows. You should use recv/send instead.\n"; + +my %report = ( + "open" => + "Program uses POSIX open/close/read/write/... APIs. You should be\n". + "aware that Win32 provides functions with the same name which do not\n". + "have POSIX semantics. Simple file operations will be fine, but you\n". + "will not be able to, for example, open /dev/* or other special files,\n". + "and select, locking and other POSIX features will not work the same\n". + "way.\n". + "\n". + "$suggest_portability_library". + "\n". + "$warning_about_read_write_on_sockets", + "close" => '@open', + "read" => '@open', + "write" => '@open', + + "socket" => + "Program uses Berkeley sockets API. Windows has a reasonable facsimile\n". + "called Winsock. However it has some annoying API differences, in\n". + "particular: (1) You have to use WSAGetLastError instead of errno,\n". + "(2) error numbers have different names, (3) you cannot select on,\n". + "sockets, (4) a multitude of small API differences, (5) you have to\n". + "initialize Winsock before using it by calling WSAStartup.\n". + "\n". + "$suggest_portability_library". + "\n". + "$warning_about_read_write_on_sockets", + "socketpair" => '@socket', + "accept" => '@socket', + "bind" => '@socket', + "connect" => '@socket', + "listen" => '@socket', + "getsockopt" => '@socket', + "setsockopt" => '@socket', + "shutdown" => '@socket', + + "ioctl" => + "Program uses fcntl or ioctl system calls. Only a tiny fraction of\n". + "the functionality of these system calls is available in Windows,\n". + "often with differences in semantics.\n". + "\n". + "$suggest_portability_library", + "fcntl" => '@ioctl', + + "select" => + "The select/poll/etc system calls are not available on Windows. You\n". + "have to use WSAWaitForMultipleEvents instead.\n". + "\n". + "$suggest_portability_library", + "poll" => '@select', + "epoll_create" => '@select', + "epoll_ctl" => '@select', + "epoll_wait" => '@select', + + "fork" => + "You cannot use fork to create new processes under Windows. You have\n". + "to replace calls to fork/exec with CreateProcess or CreateThread.\n". + "\n". + "If your program forks in order to run in parallel or to create\n". + "multiple identical workers, then you may have to restructure the\n". + "program.\n". + "\n". + "If your program needs to share resources such as file descriptors\n". + "across the fork, then some limited options are available through\n". + "CreateProcess, but nothing like as rich as what is available in\n". + "Unix.\n". + "\n". + "For server programs, we suggest using a portability library tuned\n". + "for the needs of servers, such as Apache Portable Runtime.\n", + "execl" => '@fork', + "execlp" => '@fork', + "execle" => '@fork', + "execv" => '@fork', + "execvp" => '@fork', + "execve" => '@fork', + + "usleep" => + "usleep/nanosleep system calls do not exist on Windows. You should\n". + "replace this with one of the Win32 equivalents such as Sleep.\n". + "\n". + "$suggest_portability_library", + "nanosleep" => '@usleep', + + "dup" => + "dup/dup2 may not work as expected in Win32.\n". + "\n". + "$suggest_portability_library", + "dup2" => '@dup2', + + "getopt_long" => + "GNU getopt_long is not available in Windows.\n". + "\n". + "$suggest_portability_library", + + "__stack_chk_fail" => + "The -fstack-protector option may not work with the Fedora MinGW\n". + "cross-compiler at this time.\n", +); + +# List of symbols for which there is no known problem. + +my %no_report = ( + __libc_start_main => 1, + _exit => 1, + fputc => 1, + free => 1, + fwrite => 1, + malloc => 1, + strcasecmp => 1, + strchr => 1, + strcmp => 1, + strtol => 1, +); + +sub report_start +{ + my $time = time (); + my $date = strftime "%a %b %e %H:%M:%S %Y", localtime ($time); + my $sym_time = $symbols{__crossreport_time}; + my $sym_date = strftime "%a %b %e %H:%M:%S %Y", localtime ($sym_time); + my $days = floor (($time - $sym_time) / 86400); + + print <. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or (at +your option) any later version. + +This program is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + +=cut diff --git a/crossreport/update-crossreport-db.pl b/crossreport/update-crossreport-db.pl new file mode 100755 index 0000000..628510c --- /dev/null +++ b/crossreport/update-crossreport-db.pl @@ -0,0 +1,88 @@ +#!/usr/bin/perl -w +# +# Update CrossReport database. +# Copyright (C) 2009 Red Hat Inc. +# Written by Richard W.M. Jones , +# http://fedoraproject.org/wiki/MinGW +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or (at +# your option) any later version. +# +# This program is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + +use strict; + +use GDBM_File; + +# Map of symbol name -> RPM owner. +my %symbols; +my $symdbm = + tie %symbols, "GDBM_File", "crossreport.db", &GDBM_NEWDB, 0666; +main (); +$symbols{__crossreport_time} = time (); +$symdbm->sync (); + +sub add_symbol { + my $symbol = shift; + my $rpm_name = shift; + + if (exists $symbols{$symbol} && + $symbols{$symbol} ne $rpm_name) { + # Suppress this warning - it is quite common and probably + # doesn't matter. + #warn "duplicate symbol: $symbol: $rpm_name and $symbols{$symbol}\n" + } + + $symbols{$symbol} = $rpm_name; +} + +sub main { + print <; + + print "Analyzing ", 0+@implibs, " libraries ...\n"; + + foreach my $implib (@implibs) { + # What MinGW library provides this file? + my $cmd = "rpm -qf $implib"; + open CMD, "$cmd |" or die "$cmd: $!"; + my $r = ; + close CMD; + my $rpm_name; + if ($r =~ /^(mingw32-[-+\w]+)-\d/) { + $rpm_name = $1; + } else { + die "$implib: Cannot find RPM owning this file.\n" + } + + $cmd = "i686-pc-mingw32-nm $implib | grep ' [A-HJ-TV-Z] ' | i686-pc-mingw32-c++filt -_"; + open CMD, "$cmd |" or die "$cmd: $!"; + foreach () { + chomp; + if (m/^[[:xdigit:]]+ T _(\w+)(@\d+)?$/) { + add_symbol ($1, $rpm_name); + } elsif (m/^[[:xdigit:]]+ T (.*)(@\d+)?$/) { + add_symbol ($1, $rpm_name); + } else { + die "$_: ?\n"; + } + } + } + + print "Found ", 0+(keys %symbols), " symbols.\n"; +}