mirror of
git://git.sv.gnu.org/autoconf
synced 2024-12-09 02:10:22 +08:00
645 lines
15 KiB
Perl
645 lines
15 KiB
Perl
#! @PERL@ -w
|
|
# autoscan - Create configure.scan (a preliminary configure.ac) for a package.
|
|
# Copyright 1994, 1999, 2000 Free Software Foundation, Inc.
|
|
|
|
# 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, 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., 59 Temple Place - Suite 330, Boston, MA
|
|
# 02111-1307, USA.
|
|
|
|
# Written by David MacKenzie <djm@gnu.ai.mit.edu>.
|
|
|
|
require "find.pl";
|
|
use Getopt::Long;
|
|
use strict;
|
|
|
|
use vars qw($autoconf $datadir $initfile $me $name $verbose
|
|
@cfiles @makefiles @shfiles
|
|
%functions_macros %headers_macros %identifiers_macros
|
|
%programs_macros %makevars_macros %needed_macros
|
|
%c_keywords %programs %headers %identifiers %makevars
|
|
%libraries %functions %printed);
|
|
|
|
# Find the lib files and autoconf.
|
|
&find_autoconf;
|
|
|
|
($me = $0) =~ s,.*/,,;
|
|
$verbose = 0;
|
|
|
|
# Reference these variables to pacify perl -w.
|
|
%identifiers_macros = ();
|
|
%makevars_macros = ();
|
|
%programs_macros = ();
|
|
%needed_macros = ();
|
|
|
|
my @kinds =
|
|
('functions', 'headers', 'identifiers', 'programs', 'makevars');
|
|
|
|
# For each kind, the default macro.
|
|
my %generic_macro =
|
|
(
|
|
"functions" => "AC_CHECK_FUNCS",
|
|
"headers" => "AC_CHECK_HEADERS",
|
|
"identifiers" => "AC_CHECK_TYPES",
|
|
"programs" => "AC_CHECK_PROGS"
|
|
);
|
|
|
|
|
|
|
|
&parse_args;
|
|
&init_tables;
|
|
&find('.');
|
|
&scan_files;
|
|
&output;
|
|
|
|
if (-f 'configure.ac')
|
|
{
|
|
if (-f 'configure.in')
|
|
{
|
|
print STDERR "warning: `configure.ac' and `configure.in' both present.\n";
|
|
print STDERR "warning: proceeding with `configure.ac'.\n";
|
|
}
|
|
&check_configure_ac ('configure.in');
|
|
}
|
|
elsif (-f 'configure.in')
|
|
{
|
|
&check_configure_ac ('configure.in');
|
|
}
|
|
|
|
exit 0;
|
|
|
|
# find_autoconf
|
|
# -------------
|
|
# Find the lib files and autoconf.
|
|
sub find_autoconf
|
|
{
|
|
my $dir;
|
|
my $file;
|
|
$datadir = $ENV{"AC_MACRODIR"} || "@datadir@";
|
|
($dir = $0) =~ s,[^/]*$,,;
|
|
$autoconf = '';
|
|
# We test "$dir/autoconf" in case we are in the build tree, in which case
|
|
# the names are not transformed yet.
|
|
foreach $file ($ENV{"AUTOCONF"} || '',
|
|
"$dir/@autoconf-name@",
|
|
"$dir/autoconf",
|
|
"@bindir@/@autoconf-name@")
|
|
{
|
|
if (-f $file)
|
|
{
|
|
$autoconf = $file;
|
|
last;
|
|
}
|
|
}
|
|
}
|
|
|
|
# Display usage (--help).
|
|
sub print_usage
|
|
{
|
|
print "Usage: $0 [OPTION] ... [SRCDIR]
|
|
|
|
Examine source files in the directory tree rooted at SRCDIR, or the
|
|
current directory if none is given. Search the source files for
|
|
common portability problems and create a file `configure.scan' which
|
|
is a preliminary `configure.ac' for that package.
|
|
|
|
-h, --help print this help, then exit
|
|
-V, --version print version number, then exit
|
|
-v, --verbose verbosely report processing
|
|
|
|
Library directories:
|
|
-A, --autoconf-dir=ACDIR Autoconf's files location (rarely needed)
|
|
-l, --localdir=DIR location of `aclocal.m4' and `acconfig.h'
|
|
|
|
Report bugs to <bug-autoconf\@gnu.org>.\n";
|
|
exit 0;
|
|
}
|
|
|
|
# Display version (--version).
|
|
sub print_version
|
|
{
|
|
print "autoscan (@PACKAGE_NAME@) @VERSION@
|
|
Written by David J. MacKenzie.
|
|
|
|
Copyright 1994, 1999, 2000 Free Software Foundation, Inc.
|
|
This is free software; see the source for copying conditions. There is NO
|
|
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n";
|
|
exit 0;
|
|
}
|
|
|
|
# Process any command line arguments.
|
|
sub parse_args
|
|
{
|
|
my $srcdir;
|
|
Getopt::Long::config ("bundling");
|
|
Getopt::Long::GetOptions ("A|autoconf-dir|m|macrodir=s" => \$datadir,
|
|
"h|help" => \&print_usage,
|
|
"V|version" => \&print_version,
|
|
"v|verbose" => \$verbose)
|
|
or exit 1;
|
|
|
|
die "$me: too many arguments
|
|
Try `$me --help' for more information.\n"
|
|
if (@ARGV > 1);
|
|
($srcdir) = @ARGV;
|
|
$srcdir = "."
|
|
if !defined $srcdir;
|
|
|
|
print "srcdir=$srcdir\n" if $verbose;
|
|
chdir $srcdir || die "$me: cannot cd to $srcdir: $!\n";
|
|
|
|
open (CONF, ">configure.scan") ||
|
|
die "$me: cannot create configure.scan: $!\n";
|
|
}
|
|
|
|
# Put values in the tables of what to do with each token.
|
|
sub init_tables
|
|
{
|
|
my ($kind, $word, $macro);
|
|
|
|
# Initialize a table of C keywords (to ignore).
|
|
# Taken from K&R 1st edition p. 180.
|
|
# ANSI C, GNU C, and C++ keywords can introduce portability problems,
|
|
# so don't ignore them.
|
|
foreach $word ('int', 'char', 'float', 'double', 'struct', 'union',
|
|
'long', 'short', 'unsigned', 'auto', 'extern', 'register',
|
|
'typedef', 'static', 'goto', 'return', 'sizeof', 'break',
|
|
'continue', 'if', 'else', 'for', 'do', 'while', 'switch',
|
|
'case', 'default')
|
|
{
|
|
$c_keywords{$word} = 0;
|
|
}
|
|
|
|
# The data file format supports only one line of macros per function.
|
|
# If more than that is required for a common portability problem,
|
|
# a new Autoconf macro should probably be written for that case,
|
|
# instead of duplicating the code in lots of configure.ac files.
|
|
|
|
foreach $kind (@kinds)
|
|
{
|
|
open(TABLE, "<$datadir/ac$kind") ||
|
|
die "$me: cannot open $datadir/ac$kind: $!\n";
|
|
while (<TABLE>)
|
|
{
|
|
# Ignore blank lines and comments.
|
|
next
|
|
if /^\s*$/ || /^\s*\#/;
|
|
unless (/^(\S+)\s+(\S.*)$/ || /^(\S+)\s*$/)
|
|
{
|
|
die "$me: cannot parse definition in $datadir/ac$kind:\n$_\n";
|
|
}
|
|
$word = $1;
|
|
$macro = $2 || $generic_macro{$kind};
|
|
eval "\$$kind" . "_macros{\$word} = \$macro";
|
|
}
|
|
close(TABLE);
|
|
}
|
|
}
|
|
|
|
# Collect names of various kinds of files in the package.
|
|
# Called by &find on each file.
|
|
sub wanted
|
|
{
|
|
# Strip a useless leading `./'.
|
|
$name =~ s,^\./,,;
|
|
|
|
if (/^.*\.[chlymC]$/ || /^.*\.cc$/)
|
|
{
|
|
push(@cfiles, $name);
|
|
}
|
|
elsif (/^[Mm]akefile$/ || /^GNUmakefile$/)
|
|
{
|
|
# Wanted only if there is no corresponding Makefile.in.
|
|
# Using Find, $_ contains the current filename with the current
|
|
# directory of the walk through.
|
|
push(@makefiles, $name)
|
|
if ! -f "$_.in";
|
|
}
|
|
elsif (/^[Mm]akefile\.in$/)
|
|
{
|
|
push(@makefiles, $name);
|
|
}
|
|
elsif (/^.*\.sh$/)
|
|
{
|
|
push(@shfiles, $name);
|
|
}
|
|
}
|
|
|
|
# Read through the files and collect lists of tokens in them
|
|
# that might create nonportabilities.
|
|
sub scan_files
|
|
{
|
|
my $file;
|
|
if (defined $cfiles[0])
|
|
{
|
|
$initfile = $cfiles[0]; # Pick one at random.
|
|
}
|
|
|
|
if ($verbose)
|
|
{
|
|
print "cfiles:", join(" ", @cfiles), "\n";
|
|
print "makefiles:", join(" ", @makefiles), "\n";
|
|
print "shfiles:", join(" ", @shfiles), "\n";
|
|
}
|
|
|
|
foreach $file (@cfiles)
|
|
{
|
|
push (@{$programs{"cc"}}, $file);
|
|
&scan_c_file($file);
|
|
}
|
|
|
|
foreach $file (@makefiles)
|
|
{
|
|
&scan_makefile($file);
|
|
}
|
|
|
|
foreach $file (@shfiles)
|
|
{
|
|
&scan_sh_file($file);
|
|
}
|
|
}
|
|
|
|
# scan_c_file(FILE)
|
|
# -----------------
|
|
sub scan_c_file
|
|
{
|
|
my ($file) = @_;
|
|
my ($in_comment) = 0; # Nonzero if in a multiline comment.
|
|
|
|
open(CFILE, "<$file") || die "$me: cannot open $file: $!\n";
|
|
while (<CFILE>)
|
|
{
|
|
# Strip out comments, approximately.
|
|
# Ending on this line.
|
|
if ($in_comment && m,\*/,)
|
|
{
|
|
s,.*\*/,,;
|
|
$in_comment = 0;
|
|
}
|
|
# All on one line.
|
|
s,/\*.*\*/,,g;
|
|
# Starting on this line.
|
|
if (m,/\*,)
|
|
{
|
|
$in_comment = 1;
|
|
}
|
|
# Continuing on this line.
|
|
next if $in_comment;
|
|
|
|
# Preprocessor directives.
|
|
if (/^\s*\#\s*include\s*<([^>]*)>/)
|
|
{
|
|
push (@{$headers{$1}}, "$file:$.");
|
|
}
|
|
# Ignore other preprocessor directives.
|
|
next if /^\s*\#/;
|
|
|
|
# Remove string and character constants.
|
|
s,\"[^\"]*\",,g;
|
|
s,\'[^\']*\',,g;
|
|
|
|
# Tokens in the code.
|
|
# Maybe we should ignore function definitions (in column 0)?
|
|
while (s/\b([a-zA-Z_]\w*)\s*\(/ /)
|
|
{
|
|
push (@{$functions{$1}}, "$file:$.")
|
|
if !defined $c_keywords{$1};
|
|
}
|
|
while (s/\b([a-zA-Z_]\w*)\b/ /)
|
|
{
|
|
push (@{$identifiers{$1}}, "$file:$.")
|
|
if !defined $c_keywords{$1};
|
|
}
|
|
}
|
|
close(CFILE);
|
|
|
|
if ($verbose)
|
|
{
|
|
my ($word);
|
|
|
|
print "\n$file functions:\n";
|
|
foreach $word (sort keys %functions)
|
|
{
|
|
print "$word: @{$functions{$word}}\n";
|
|
}
|
|
|
|
print "\n$file identifiers:\n";
|
|
foreach $word (sort keys %identifiers)
|
|
{
|
|
print "$word: @{$identifiers{$word}}\n";
|
|
}
|
|
|
|
print "\n$file headers:\n";
|
|
foreach $word (sort keys %headers)
|
|
{
|
|
print "$word: @{$headers{$word}}\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
sub scan_makefile
|
|
{
|
|
my ($file) = @_;
|
|
|
|
open(MFILE, "<$file") || die "$me: cannot open $file: $!\n";
|
|
while (<MFILE>)
|
|
{
|
|
# Strip out comments and variable references.
|
|
s/#.*//;
|
|
s/\$\([^\)]*\)//g;
|
|
s/\${[^\}]*}//g;
|
|
s/@[^@]*@//g;
|
|
|
|
# Variable assignments.
|
|
while (s/\b([a-zA-Z_]\w*)\s*=/ /)
|
|
{
|
|
push (@{$makevars{$1}}, "$file:$.");
|
|
}
|
|
# Libraries.
|
|
while (s/\B-l([a-zA-Z_]\w*)\b/ /)
|
|
{
|
|
push (@{$libraries{$1}}, "$file:$.");
|
|
}
|
|
# Tokens in the code.
|
|
while (s/\b([a-zA-Z_]\w*)\b/ /)
|
|
{
|
|
push (@{$programs{$1}}, "$file:$.");
|
|
}
|
|
}
|
|
close(MFILE);
|
|
|
|
if ($verbose)
|
|
{
|
|
my ($word);
|
|
|
|
print "\n$file makevars:\n";
|
|
foreach $word (sort keys %makevars)
|
|
{
|
|
print "$word: @{$makevars{$word}}\n";
|
|
}
|
|
|
|
print "\n$file libraries:\n";
|
|
foreach $word (sort keys %libraries)
|
|
{
|
|
print "$word: @{$libraries{$word}}\n";
|
|
}
|
|
|
|
print "\n$file programs:\n";
|
|
foreach $word (sort keys %programs)
|
|
{
|
|
print "$word: @{$programs{$word}}\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
sub scan_sh_file
|
|
{
|
|
my ($file) = @_;
|
|
|
|
open(MFILE, "<$file") || die "$me: cannot open $file: $!\n";
|
|
while (<MFILE>)
|
|
{
|
|
# Strip out comments and variable references.
|
|
s/#.*//;
|
|
s/\${[^\}]*}//g;
|
|
s/@[^@]*@//g;
|
|
|
|
# Tokens in the code.
|
|
while (s/\b([a-zA-Z_]\w*)\b/ /)
|
|
{
|
|
push (@{$programs{$1}}, "$file:$.");
|
|
}
|
|
}
|
|
close(MFILE);
|
|
|
|
if ($verbose)
|
|
{
|
|
my ($word);
|
|
|
|
print "\n$file programs:\n";
|
|
foreach $word (sort keys %programs)
|
|
{
|
|
print "$word: @{$programs{$word}}\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
# Print a proto configure.ac.
|
|
sub output
|
|
{
|
|
my %unique_makefiles;
|
|
|
|
print CONF "# Process this file with autoconf to produce a configure script.\n";
|
|
print CONF "AC_INIT\n";
|
|
if (defined $initfile)
|
|
{
|
|
print CONF "AC_CONFIG_SRCDIR([$initfile])\n";
|
|
}
|
|
if (defined $cfiles[0])
|
|
{
|
|
print CONF "AC_CONFIG_HEADER([config.h])\n";
|
|
}
|
|
|
|
&output_programs;
|
|
&output_libraries;
|
|
&output_headers;
|
|
&output_identifiers;
|
|
&output_functions;
|
|
|
|
# Change DIR/Makefile.in to DIR/Makefile.
|
|
foreach $_ (@makefiles)
|
|
{
|
|
s/\.in$//;
|
|
$unique_makefiles{$_}++;
|
|
}
|
|
print CONF "\nAC_CONFIG_FILES([",
|
|
join ("\n ", keys(%unique_makefiles)), "])\n";
|
|
print CONF "AC_OUTPUT\n";
|
|
|
|
close CONF;
|
|
}
|
|
|
|
# Print Autoconf macro $1 if it's not undef and hasn't been printed already.
|
|
sub print_unique
|
|
{
|
|
my ($macro, @where) = @_;
|
|
|
|
if (defined $macro && !defined $printed{$macro})
|
|
{
|
|
print CONF "$macro\n";
|
|
$printed{$macro} = 1;
|
|
|
|
push (@{$needed_macros{$macro}}, @where);
|
|
}
|
|
}
|
|
|
|
sub output_programs
|
|
{
|
|
my $word;
|
|
|
|
print CONF "\n# Checks for programs.\n";
|
|
foreach $word (sort keys %programs)
|
|
{
|
|
&print_unique($programs_macros{$word}, @{$programs{$word}});
|
|
}
|
|
foreach $word (sort keys %makevars)
|
|
{
|
|
&print_unique($makevars_macros{$word}, @{$makevars{$word}});
|
|
}
|
|
}
|
|
|
|
sub output_libraries
|
|
{
|
|
my ($word);
|
|
|
|
print CONF "\n# Checks for libraries.\n";
|
|
foreach $word (sort keys %libraries)
|
|
{
|
|
print CONF "# FIXME: Replace `main' with a function in `-l$word':\n";
|
|
print CONF "AC_CHECK_LIB([$word], [main])\n";
|
|
}
|
|
}
|
|
|
|
sub output_headers
|
|
{
|
|
my $word;
|
|
my @have_headers;
|
|
|
|
print CONF "\n# Checks for header files.\n";
|
|
foreach $word (sort keys %headers)
|
|
{
|
|
if (defined $headers_macros{$word})
|
|
{
|
|
if ($headers_macros{$word} eq 'AC_CHECK_HEADERS')
|
|
{
|
|
push (@have_headers, $word);
|
|
push (@{$needed_macros{"AC_CHECK_HEADERS([$word])"}},
|
|
@{$headers{$word}});
|
|
}
|
|
else
|
|
{
|
|
&print_unique ($headers_macros{$word}, @{$headers{$word}});
|
|
}
|
|
}
|
|
}
|
|
print CONF "AC_CHECK_HEADERS([" . join(' ', sort(@have_headers)) . "])\n"
|
|
if @have_headers;
|
|
}
|
|
|
|
sub output_identifiers
|
|
{
|
|
my $word;
|
|
my @have_types;
|
|
|
|
print CONF "\n# Checks for typedefs, structures, and compiler characteristics.\n";
|
|
foreach $word (sort keys %identifiers)
|
|
{
|
|
if (defined $identifiers_macros{$word})
|
|
{
|
|
if ($identifiers_macros{$word} eq 'AC_CHECK_TYPES')
|
|
{
|
|
push (@have_types, $word);
|
|
push (@{$needed_macros{"AC_CHECK_TYPES([$word])"}},
|
|
@{$identifiers{$word}});
|
|
}
|
|
else
|
|
{
|
|
&print_unique ($identifiers_macros{$word},
|
|
@{$identifiers{$word}});
|
|
}
|
|
}
|
|
}
|
|
print CONF "AC_CHECK_TYPES([" . join(', ', sort(@have_types)) . "])\n"
|
|
if @have_types;
|
|
}
|
|
|
|
sub output_functions
|
|
{
|
|
my $word;
|
|
my @have_funcs;
|
|
|
|
print CONF "\n# Checks for library functions.\n";
|
|
foreach $word (sort keys %functions)
|
|
{
|
|
if (defined $functions_macros{$word})
|
|
{
|
|
if ($functions_macros{$word} eq 'AC_CHECK_FUNCS')
|
|
{
|
|
push (@have_funcs, $word);
|
|
push (@{$needed_macros{"AC_CHECK_FUNCS([$word])"}},
|
|
@{$functions{$word}});
|
|
}
|
|
else
|
|
{
|
|
&print_unique ($functions_macros{$word},
|
|
@{$functions{$word}});
|
|
}
|
|
}
|
|
}
|
|
print CONF "AC_CHECK_FUNCS([" . join(' ', sort(@have_funcs)) . "])\n"
|
|
if @have_funcs;
|
|
}
|
|
|
|
|
|
# Use autoconf to check if all the suggested macros are included
|
|
# in `configure.ac'
|
|
sub check_configure_ac
|
|
{
|
|
my ($configure_ac) = $@;
|
|
my ($trace_option) = '';
|
|
my ($word);
|
|
my ($macro);
|
|
|
|
foreach $macro (sort keys %needed_macros)
|
|
{
|
|
$macro =~ s/\(.*//;
|
|
$trace_option .= " -t $macro";
|
|
}
|
|
|
|
open (TRACES, "$autoconf -A $datadir $trace_option $configure_ac|") ||
|
|
die "$me: cannot create read traces: $!\n";
|
|
|
|
while (<TRACES>)
|
|
{
|
|
chomp;
|
|
my ($file, $line, $macro, @args) = split (/:/, $_);
|
|
if ($macro =~ /^AC_CHECK_(HEADER|FUNC|TYPE|MEMBER)S$/)
|
|
{
|
|
# To be rigorous, we should distinguish between space and comma
|
|
# separated macros. But there is no point.
|
|
foreach $word (split (/\s|,/, $args[0]))
|
|
{
|
|
# AC_CHECK_MEMBERS wants `struct' or `union'.
|
|
if ($macro eq "AC_CHECK_MEMBERS"
|
|
&& $word =~ /^stat.st_/)
|
|
{
|
|
$word = "struct " . $word;
|
|
}
|
|
delete ($needed_macros{"$macro([$word])"});
|
|
}
|
|
}
|
|
else
|
|
{
|
|
delete ($needed_macros{$macro});
|
|
}
|
|
}
|
|
|
|
close (TRACES) ||
|
|
die "$me: cannot close traces: $!\n";
|
|
|
|
foreach $macro (sort keys %needed_macros)
|
|
{
|
|
print STDERR "warning: missing $macro wanted by: @{$needed_macros{$macro}}\n";
|
|
}
|
|
}
|