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|
#!perl -w
use strict;
use Config;
use File::Compare qw(compare);
use File::Copy qw(copy);
use File::Basename qw(fileparse);
my ($name, $dir) = fileparse($0);
$name =~ s#^(.*)\.PL$#../$1.SH#;
my %opt;
while (@ARGV && $ARGV[0] =~ /^([\w_]+)=(.*)$/)
{
$opt{$1}=$2;
shift(@ARGV);
}
$opt{CONFIG_H} ||= 'config.h';
$opt{CORE_DIR} ||= '../lib/CORE';
$opt{CORE_CONFIG_H} ||= $opt{CORE_DIR} . '/config.h';
open(SH, "<", $name) || die "Cannot open $name:$!";
while (<SH>)
{
last if /^\s*sed/;
}
my($term,$file,$pat) = /^\s*sed\s+<<(\S+)\s+>(\S+)\s+(.*)$/;
$file =~ s/^\$(\w+)$/$opt{$1}/g;
my $str = "sub munge\n{\n";
while ($pat =~ s/-e\s+'([^']*)'\s*//)
{
my $e = $1;
$e =~ s/\\([\(\)])/$1/g;
$e =~ s/\\(\d)/\$$1/g;
$str .= "$e;\n";
}
$str .= "}\n";
eval $str;
die "$str:$@" if $@;
open(H, ">", "$file.new") || die "Cannot open $file.new:$!";
binmode(H);
while (<SH>)
{
last if /^$term$/o;
s/\$([\w_]+)/Config($1)/eg;
s/`([^\`]*)`/BackTick($1)/eg;
munge();
s/\\\$/\$/g;
s#/[ *\*]*\*/#/**/#;
s#(.)/\*\*/#$1/ **/# if(/^\/\*/); #avoid "/*" inside comments
if (/^\s*#define\s+(PRIVLIB|SITELIB|VENDORLIB)_EXP/)
{
$_ = '#define '. $1 . '_EXP ('.(
$1 eq 'PRIVLIB' ? 'PerlEnv_lib_path' :
$1 eq 'SITELIB' ? 'PerlEnv_sitelib_path' :
$1 eq 'VENDORLIB' ? 'PerlEnv_vendorlib_path' :
die "unknown *LIB_EXP define \"$1\""
). "(PERL_VERSION_STRING, NULL))\t/**/\n";
}
# incpush() handles archlibs, so disable them
elsif (/^\s*#define\s+(ARCHLIB|SITEARCH|VENDORARCH)_EXP/)
{
$_ = "/*#define ". $1 . "_EXP \"\"\t/ **/\n";
}
elsif (/^\s*#define\s+CPP(STDIN|RUN)\s+"gcc(.*)"\s*$/)
{
$_ = "#define CPP" . $1 . " \"" . $opt{ARCHPREFIX} . "gcc" . $2 . "\"\n";
}
print H;
}
close(H);
close(SH);
my $core_config_h = $opt{CORE_CONFIG_H};
if (compare("$file.new", $core_config_h)) {
mkdir $opt{CORE_DIR} unless -d $opt{CORE_DIR};
chmod(0666,$core_config_h);
copy("$file.new",$core_config_h) || die "Cannot copy $file.new $core_config_h:$!";
chmod(0444,$core_config_h);
}
if (compare("$file.new",$file))
{
warn "$file has changed\n";
chmod(0666,$file);
unlink($file);
rename("$file.new",$file) || die "Cannot rename:$!";
}
else
{
unlink ("$file.new");
}
sub Config
{
my $var = shift;
my $val = $Config{$var};
$val = 'undef' unless defined $val;
$val =~ s/\\/\\\\/g;
return $val;
}
sub BackTick
{
my $cmd = shift;
if ($cmd =~ /^echo\s+(.*?)\s*\|\s+sed\s+'(.*)'\s*$/)
{
my($data,$pat) = ($1,$2);
$data =~ s/\s+/ /g;
eval "\$data =~ $pat";
return $data;
}
else
{
die "Cannot handle \`$cmd\`";
}
return $cmd;
}
|
