1#! perl -w
2
3use strict ;
4use ExtUtils::MakeMaker 5.16 ;
5use Config ;
6
7die "DB_File needs Perl 5.004_05 or better. This is $]\n"
8    if $] <= 5.00404;
9
10my $VER_INFO ;
11my $LIB_DIR ;
12my $INC_DIR ;
13my $DB_NAME ;
14my $LIBS ;
15my $COMPAT185 = "" ;
16
17ParseCONFIG() ;
18
19my @files = ('DB_File.pm', glob "t/*.t") ;
20UpDowngrade(@files);
21
22if (defined $DB_NAME)
23  { $LIBS = $DB_NAME }
24else {
25    if ($^O eq 'MSWin32')
26      { $LIBS = '-llibdb' }
27    else
28      { $LIBS = '-ldb' }
29}
30
31# Solaris is special.
32#$LIBS .= " -lthread" if $^O eq 'solaris' ;
33
34# AIX is special.
35$LIBS .= " -lpthread" if $^O eq 'aix' ;
36
37# OS2 is a special case, so check for it now.
38my $OS2 = "" ;
39$OS2 = "-DOS2" if $Config{'osname'} eq 'os2' ;
40
41my $WALL = '' ;
42#$WALL = ' -Wall ';
43
44WriteMakefile(
45	NAME 		=> 'DB_File',
46	LIBS 		=> ["-L${LIB_DIR} $LIBS"],
47        #MAN3PODS        => {},         # Pods will be built by installman.
48	INC		=> "-I$INC_DIR",
49    VERSION_FROM	=> 'DB_File.pm',
50	XS_VERSION      => eval MM->parse_version('DB_File.pm'),
51	XSPROTOARG	=> '-noprototypes',
52	DEFINE		=> "-D_NOT_CORE $OS2 $VER_INFO $COMPAT185 $WALL",
53	OBJECT		=> 'version$(OBJ_EXT) DB_File$(OBJ_EXT)',
54    ((ExtUtils::MakeMaker->VERSION() gt '6.30')
55        ?  ('LICENSE'  => 'perl')
56        : ()
57    ),
58    (
59    $] >= 5.005
60        ? (ABSTRACT_FROM => 'DB_File.pm',
61            AUTHOR       => 'Paul Marquess <pmqs@cpan.org>')
62        : ()
63    ),
64
65
66	#OPTIMIZE	=> '-g',
67	'depend'	=> { 'Makefile'          => 'config.in',
68                             'version$(OBJ_EXT)' => 'version.c'},
69	'clean'		=> { FILES => 'constants.h constants.xs' },
70	'macro'		=> { INSTALLDIRS => 'perl', my_files => "@files" },
71        'dist'          => { COMPRESS => 'gzip', SUFFIX => 'gz',
72			     DIST_DEFAULT => 'MyDoubleCheck tardist'},
73	);
74
75
76my @names = qw(
77	BTREEMAGIC
78	BTREEVERSION
79	DB_LOCK
80	DB_SHMEM
81	DB_TXN
82	HASHMAGIC
83	HASHVERSION
84	MAX_PAGE_NUMBER
85	MAX_PAGE_OFFSET
86	MAX_REC_NUMBER
87	RET_ERROR
88	RET_SPECIAL
89	RET_SUCCESS
90	R_CURSOR
91	R_DUP
92	R_FIRST
93	R_FIXEDLEN
94	R_IAFTER
95	R_IBEFORE
96	R_LAST
97	R_NEXT
98	R_NOKEY
99	R_NOOVERWRITE
100	R_PREV
101	R_RECNOSYNC
102	R_SETCURSOR
103	R_SNAPSHOT
104	__R_UNUSED
105	);
106
107if (eval {require ExtUtils::Constant; 1}) {
108    # Check the constants above all appear in @EXPORT in DB_File.pm
109    my %names = map { $_, 1} @names;
110    open F, "<DB_File.pm" or die "Cannot open DB_File.pm: $!\n";
111    while (<F>)
112    {
113        last if /^\s*\@EXPORT\s+=\s+qw\(/ ;
114    }
115
116    while (<F>)
117    {
118        last if /^\s*\)/ ;
119        /(\S+)/ ;
120        delete $names{$1} if defined $1 ;
121    }
122    close F ;
123
124    if ( keys %names )
125    {
126        my $missing = join ("\n\t", sort keys %names) ;
127        die "The following names are missing from \@EXPORT in DB_File.pm\n" .
128            "\t$missing\n" ;
129    }
130
131
132    ExtUtils::Constant::WriteConstants(
133                                     NAME => 'DB_File',
134                                     NAMES => \@names,
135                                     C_FILE  => 'constants.h',
136                                     XS_FILE  => 'constants.xs',
137
138                                    );
139}
140else {
141    use File::Copy;
142    copy ('fallback.h', 'constants.h')
143      or die "Can't copy fallback.h to constants.h: $!";
144    copy ('fallback.xs', 'constants.xs')
145      or die "Can't copy fallback.xs to constants.xs: $!";
146}
147
148exit;
149
150
151sub MY::libscan
152{
153    my $self = shift ;
154    my $path = shift ;
155
156    return undef
157        if $path =~ /(~|\.bak)$/ ||
158           $path =~ /^\..*\.swp$/ ;
159
160    return $path;
161}
162
163
164sub MY::postamble { <<'EOM' } ;
165
166MyDoubleCheck:
167	@echo Checking config.in is setup for a release
168	@(grep "^LIB.*/usr/local/BerkeleyDB" config.in && 	\
169	grep "^INCLUDE.*/usr/local/BerkeleyDB" config.in &&	\
170	grep "^#DBNAME.*" config.in) >/dev/null ||		\
171	    (echo config.in needs fixing ; exit 1)
172	@echo config.in is ok
173	@echo
174	@echo Checking DB_File.xs is ok for a release.
175	@(perl -ne ' exit 1 if /^\s*#\s*define\s+TRACE/ ; ' DB_File.xs || \
176	    (echo DB_File.xs needs fixing ; exit 1))
177	@echo DB_File.xs is ok
178	@echo
179	@echo Checking for $$^W in files: $(my_files)
180	@perl -ne '						\
181	    exit 1 if /^\s*local\s*\(\s*\$$\^W\s*\)/;' $(my_files) ||	\
182	  (echo found unexpected $$^W ; exit 1)
183	@echo No $$^W found.
184	@echo
185	@echo Checking for 'use vars' in files: $(my_files)
186	@perl -ne '						\
187	    exit 0 if /^__(DATA|END)__/;               	\
188	    exit 1 if /^\s*use\s+vars/;' $(my_files) ||	\
189	  (echo found unexpected "use vars"; exit 1)
190	@echo No 'use vars' found.
191	@echo
192	@echo All files are OK for a release.
193	@echo
194
195EOM
196
197
198
199sub ParseCONFIG
200{
201    my ($k, $v) ;
202    my @badkey = () ;
203    my %Info = () ;
204    my @Options = qw( INCLUDE LIB PREFIX HASH DBNAME COMPAT185 ) ;
205    my %ValidOption = map {$_, 1} @Options ;
206    my %Parsed = %ValidOption ;
207    my $CONFIG = 'config.in' ;
208
209    print "Parsing $CONFIG...\n" ;
210
211    # DBNAME & COMPAT185 are optional, so pretend they  have
212    # been parsed.
213    delete $Parsed{'DBNAME'} ;
214    delete $Parsed{'COMPAT185'} ;
215    $Info{COMPAT185} = "No" ;
216
217
218    open(F, "$CONFIG") or die "Cannot open file $CONFIG: $!\n" ;
219    while (<F>) {
220	s/^\s*|\s*$//g ;
221	next if /^\s*$/ or /^\s*#/ ;
222	s/\s*#\s*$// ;
223
224	($k, $v) = split(/\s+=\s+/, $_, 2) ;
225	$k = uc $k ;
226	if ($ValidOption{$k}) {
227	    delete $Parsed{$k} ;
228	    $Info{$k} = $v ;
229	}
230	else {
231	    push(@badkey, $k) ;
232	}
233    }
234    close F ;
235
236    print "Unknown keys in $CONFIG ignored [@badkey]\n"
237	if @badkey ;
238
239    # check parsed values
240    my @missing = () ;
241    die "The following keys are missing from $CONFIG file: [@missing]\n"
242        if @missing = keys %Parsed ;
243
244    $INC_DIR = $ENV{'DB_FILE_INCLUDE'} || $Info{'INCLUDE'} ;
245    $LIB_DIR = $ENV{'DB_FILE_LIB'} || $Info{'LIB'} ;
246    $DB_NAME = $ENV{'DB_FILE_NAME'} || $Info{'DBNAME'} ;
247    $COMPAT185 = "-DCOMPAT185 -DDB_LIBRARY_COMPATIBILITY_API"
248        if (defined $ENV{'DB_FILE_COMPAT185'} &&
249		$ENV{'DB_FILE_COMPAT185'} =~ /^\s*(on|true|1)\s*$/i) ||
250		$Info{'COMPAT185'} =~ /^\s*(on|true|1)\s*$/i ;
251    my $PREFIX  = $Info{'PREFIX'} ;
252    my $HASH    = $Info{'HASH'} ;
253
254    $VER_INFO = "-DmDB_Prefix_t=${PREFIX} -DmDB_Hash_t=${HASH}" ;
255
256    print <<EOM if 0 ;
257    INCLUDE	[$INC_DIR]
258    LIB		[$LIB_DIR]
259    HASH	[$HASH]
260    PREFIX	[$PREFIX]
261    DBNAME      [$DB_NAME]
262
263EOM
264
265    print "Looks Good.\n" ;
266
267}
268
269sub UpDowngrade
270{
271    my @files = @_ ;
272
273    # our      is stable from 5.6.0 onward
274    # warnings is stable from 5.6.1 onward
275
276    # Note: this code assumes that each statement it modifies is not
277    #       split across multiple lines.
278
279
280    my $warn_sub ;
281    my $our_sub ;
282
283    if ($] < 5.006001) {
284        # From: use|no warnings "blah"
285        # To:   local ($^W) = 1; # use|no warnings "blah"
286        #
287        # and
288        #
289        # From: warnings::warnif(x,y);
290        # To:   $^W && carp(y); # warnif -- x
291        $warn_sub = sub {
292	    s/^(\s*)(no\s+warnings)/${1}local (\$^W) = 0; #$2/ ;
293	    s/^(\s*)(use\s+warnings)/${1}local (\$^W) = 1; #$2/ ;
294
295	    s/^(\s*)warnings::warnif\s*\((.*?)\s*,\s*(.*?)\)\s*;/${1}\$^W && carp($3); # warnif - $2/ ;
296          };
297    }
298    else {
299        # From: local ($^W) = 1; # use|no warnings "blah"
300        # To:   use|no warnings "blah"
301        #
302        # and
303        #
304        # From: $^W && carp(y); # warnif -- x
305        # To:   warnings::warnif(x,y);
306        $warn_sub = sub {
307	    s/^(\s*)local\s*\(\$\^W\)\s*=\s*\d+\s*;\s*#\s*((no|use)\s+warnings.*)/$1$2/ ;
308	    s/^(\s*)\$\^W\s+\&\&\s*carp\s*\((.*?)\)\s*;\s*#\s*warnif\s*-\s*(.*)/${1}warnings::warnif($3, $2);/ ;
309          };
310    }
311
312    if ($] < 5.006000) {
313        $our_sub = sub {
314	    if ( /^(\s*)our\s+\(\s*([^)]+\s*)\)/ ) {
315                my $indent = $1;
316                my $vars = join ' ', split /\s*,\s*/, $2;
317                $_ = "${indent}use vars qw($vars);\n";
318            }
319          };
320    }
321    else {
322        $our_sub = sub {
323	    if ( /^(\s*)use\s+vars\s+qw\((.*?)\)/ ) {
324                my $indent = $1;
325                my $vars = join ', ', split ' ', $2;
326                $_ = "${indent}our ($vars);\n";
327            }
328          };
329    }
330
331    foreach (@files)
332      { doUpDown($our_sub, $warn_sub, $_) }
333}
334
335
336sub doUpDown
337{
338    my $our_sub = shift;
339    my $warn_sub = shift;
340
341    local ($^I) = ".bak" ;
342    local (@ARGV) = shift;
343
344    while (<>)
345    {
346	print, last if /^__(END|DATA)__/ ;
347
348	&{ $our_sub }();
349	&{ $warn_sub }();
350	print ;
351    }
352
353    return if eof ;
354
355    while (<>)
356      { print }
357}
358
359# end of file Makefile.PL
360