File Coverage

lib/ExtUtils/Mkbootstrap.pm
Criterion Covered Total %
statement 47 48 97.9
branch 17 20 85.0
condition 5 6 83.3
subroutine 6 6 100.0
pod 0 1 0.0
total 75 81 92.5


line stmt bran cond sub pod time code
1             package ExtUtils::Mkbootstrap;
2              
3 2     2   45904 use strict;
  2         10  
  2         59  
4 2     2   10 use warnings;
  2         3  
  2         168  
5              
6             our $VERSION = '7.70';
7             $VERSION =~ tr/_//d;
8              
9             require Exporter;
10             our @ISA = ('Exporter');
11             our @EXPORT = ('&Mkbootstrap');
12              
13 2     2   12 use Config;
  2         4  
  2         360  
14              
15             our $Verbose = 0;
16              
17              
18             sub Mkbootstrap {
19 7     7 0 7672 my($baseext, @bsloadlibs)=@_;
20 7         22 @bsloadlibs = grep($_, @bsloadlibs); # strip empty libs
21              
22 7 100       38 print " bsloadlibs=@bsloadlibs\n" if $Verbose;
23              
24             # We need DynaLoader here because we and/or the *_BS file may
25             # call dl_findfile(). We don't say `use' here because when
26             # first building perl extensions the DynaLoader will not have
27             # been built when MakeMaker gets first used.
28 7         66 require DynaLoader;
29              
30 7 100       168 rename "$baseext.bs", "$baseext.bso"
31             if -s "$baseext.bs";
32              
33 7 100       111 if (-f "${baseext}_BS"){
34 1         5 $_ = "${baseext}_BS";
35             package DynaLoader; # execute code as if in DynaLoader
36 2     2   14 no strict 'vars';
  2         3  
  2         288  
37 1         4 local($osname, $dlsrc) = (); # avoid warnings
38 1         14 ($osname, $dlsrc) = @Config::Config{qw(osname dlsrc)};
39 1         6 $bscode = "";
40 1         3 unshift @INC, ".";
41 1         210 require $_;
42 1         15 shift @INC;
43             }
44              
45 7 50       84 if ($Config{'dlsrc'} =~ /^dl_dld/){
46             package DynaLoader;
47 2     2   14 no strict 'vars';
  2         3  
  2         764  
48 0         0 push(@dl_resolve_using, dl_findfile('-lc'));
49             }
50              
51 7         24 my(@all) = (@bsloadlibs, @DynaLoader::dl_resolve_using);
52 7         14 my($method) = '';
53 7 100 66     43 if (@all || (defined $DynaLoader::bscode && length $DynaLoader::bscode)){
      100        
54 3 50       177 open my $bs, ">", "$baseext.bs"
55             or die "Unable to open $baseext.bs: $!";
56 3         21 print "Writing $baseext.bs\n";
57 3 100       31 print " containing: @all" if $Verbose;
58 3         40 print $bs "# $baseext DynaLoader bootstrap file for $^O architecture.\n";
59 3         10 print $bs "# Do not edit this file, changes will be lost.\n";
60 3         29 print $bs "# This file was automatically generated by the\n";
61 3         12 print $bs "# Mkbootstrap routine in ExtUtils::Mkbootstrap (v$VERSION).\n";
62 3 50       8 if (@all) {
63 3         6 print $bs "\@DynaLoader::dl_resolve_using = ";
64             # If @all contains names in the form -lxxx or -Lxxx then it's asking for
65             # runtime library location so we automatically add a call to dl_findfile()
66 3 100       17 if (" @all" =~ m/ -[lLR]/){
67 1         4 print $bs " dl_findfile(qw(\n @all\n ));\n";
68             } else {
69 2         7 print $bs " qw(@all);\n";
70             }
71             }
72             # write extra code if *_BS says so
73 3 100       8 print $bs $DynaLoader::bscode if $DynaLoader::bscode;
74 3         36 print $bs "\n1;\n";
75 3         250 close $bs;
76             }
77             }
78              
79             1;
80              
81             __END__
82              
83             =head1 NAME
84              
85             ExtUtils::Mkbootstrap - make a bootstrap file for use by DynaLoader
86              
87             =head1 SYNOPSIS
88              
89             Mkbootstrap
90              
91             =head1 DESCRIPTION
92              
93             Mkbootstrap typically gets called from an extension Makefile.
94              
95             There is no C<*.bs> file supplied with the extension. Instead, there may
96             be a C<*_BS> file which has code for the special cases, like posix for
97             berkeley db on the NeXT.
98              
99             This file will get parsed, and produce a maybe empty
100             C<@DynaLoader::dl_resolve_using> array for the current architecture.
101             That will be extended by $BSLOADLIBS, which was computed by
102             ExtUtils::Liblist::ext(). If this array still is empty, we do nothing,
103             else we write a .bs file with an C<@DynaLoader::dl_resolve_using>
104             array.
105              
106             The C<*_BS> file can put some code into the generated C<*.bs> file by
107             placing it in C<$bscode>. This is a handy 'escape' mechanism that may
108             prove useful in complex situations.
109              
110             If @DynaLoader::dl_resolve_using contains C<-L*> or C<-l*> entries then
111             Mkbootstrap will automatically add a dl_findfile() call to the
112             generated C<*.bs> file.
113              
114             =cut