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This should fix the error owine was getting in configure (THANKS strict) :P
[user/henk/code/inspircd.git] / make / utilities.pm
1 #       +------------------------------------+
2 #       | Inspire Internet Relay Chat Daemon |
3 #       +------------------------------------+
4 #
5 #  InspIRCd: (C) 2002-2007 InspIRCd Development Team
6 # See: http://www.inspircd.org/wiki/index.php/Credits
7 #
8 # This program is free but copyrighted software; see
9 #      the file COPYING for details.
10 #
11 # ---------------------------------------------------
12
13 package make::utilities;
14
15 require 5.8.0;
16
17 use strict;
18 use warnings FATAL => qw(all);
19
20 use Exporter 'import';
21 use POSIX;
22 use Getopt::Long;
23 use Fcntl;
24 our @EXPORT = qw(make_rpath pkgconfig_get_include_dirs pkgconfig_get_lib_dirs pkgconfig_check_version translate_functions promptstring vcheck);
25
26 # Parse the output of a *_config program,
27 # such as pcre_config, take out the -L
28 # directive and return an rpath for it.
29
30 # \e[1;32msrc/Makefile\e[0m
31
32 my %already_added = ();
33
34 sub promptstring($$$$$)
35 {
36         my ($prompt, $configitem, $default, $package, $commandlineswitch) = @_;
37         my $var;
38         if (!$main::interactive)
39         {
40                 my $opt_commandlineswitch;
41                 GetOptions ("$commandlineswitch=s" => \$opt_commandlineswitch);
42                 if (defined $opt_commandlineswitch)
43                 {
44                         print "\e[1;32m$opt_commandlineswitch\e[0m\n";
45                         $var = $opt_commandlineswitch;
46                 }
47                 else
48                 {
49                         die "Could not detect $package! Please specify the $prompt via the command line option \e[1;32m--$commandlineswitch=\"/path/to/file\"\e[0m";
50                 }
51         }
52         else
53         {
54                 print "\nPlease enter the $prompt?\n";
55                 print "[\e[1;32m$default\e[0m] -> ";
56                 chomp($var = <STDIN>);
57         }
58         if ($var eq "")
59         {
60                 $var = $default;
61         }
62         $main::config{$configitem} = $var;
63 }
64
65 sub make_rpath($;$)
66 {
67         my ($executable, $module) = @_;
68         chomp(my $data = `$executable`);
69         my $output = "";
70         while ($data =~ /-L(\S+)/)
71         {
72                 my $libpath = $1;
73                 if (!exists $already_added{$libpath})
74                 {
75                         print "Adding extra library path to \e[1;32m$module\e[0m ... \e[1;32m$libpath\e[0m\n";
76                         $already_added{$libpath} = 1;
77                 }
78                 $output .= "-Wl,--rpath -Wl,$libpath -L$libpath " unless defined $main::opt_disablerpath;
79                 $data =~ s/-L(\S+)//;
80         }
81         return $output;
82 }
83
84 sub extend_pkg_path()
85 {
86         if (!exists $ENV{PKG_CONFIG_PATH})
87         {
88                 $ENV{PKG_CONFIG_PATH} = "/usr/lib/pkgconfig:/usr/local/lib/pkgconfig:/usr/local/libdata/pkgconfig:/usr/X11R6/libdata/pkgconfig";
89         }
90         else
91         {
92                 $ENV{PKG_CONFIG_PATH} .= ":/usr/local/lib/pkgconfig:/usr/local/libdata/pkgconfig:/usr/X11R6/libdata/pkgconfig";
93         }
94 }
95
96 sub pkgconfig_get_include_dirs($$$;$)
97 {
98         my ($packagename, $headername, $defaults, $module) = @_;
99
100         my $key = "default_includedir_$packagename";
101         if (exists $main::config{$key})
102         {
103                 print "Locating include directory for package \e[1;32m$packagename\e[0m for module \e[1;32m$module\e[0m... ";
104                 my $ret = $main::config{$key};
105                 print "\e[1;32m$ret\e[0m (cached)\n";
106                 return $ret;
107         }
108
109         extend_pkg_path();
110
111         print "Locating include directory for package \e[1;32m$packagename\e[0m for module \e[1;32m$module\e[0m... ";
112
113         my $v = `pkg-config --modversion $packagename 2>/dev/null`;
114         my $ret = `pkg-config --cflags $packagename 2>/dev/null`;
115         my $foo = "";
116
117         if ((!defined $v) || ($v eq ""))
118         {
119                 $foo = `locate "$headername" | head -n 1`;
120                 $foo =~ /(.+)\Q$headername\E/;
121                 my $find = $1;
122                 chomp($find);
123                 if ((defined $find) && ($find ne "") && ($find ne $packagename))
124                 {
125                         print "(\e[1;32mFound via search\e[0m) ";
126                         $foo = "-I$1";
127                 }
128                 else
129                 {
130                         $foo = " ";
131                         undef $v;
132                 }
133                 $ret = "$foo";
134         }
135         if (($defaults ne "") && (($ret eq "") || (!defined $ret)))
136         {
137                 $ret = "$foo " . $defaults;
138         }
139         chomp($ret);
140         if ((($ret eq " ") || (!defined $ret)) && ((!defined $v) || ($v eq "")))
141         {
142                 my $key = "default_includedir_$packagename";
143                 if (exists $main::config{$key})
144                 {
145                         $ret = $main::config{$key};
146                 }
147                 else
148                 {
149                         $headername =~ s/^\///;
150                         promptstring("path to the directory containing $headername", $key, "/usr/include",$packagename,"$packagename-includes");
151                         $packagename =~ tr/a-z/A-Z/;
152                         $main::config{$key} = "-I$main::config{$key}" . " $defaults -DVERSION_$packagename=\"$v\"";
153                         $main::config{$key} =~ s/^\s+//g;
154                         $ret = $main::config{$key};
155                         return $ret;
156                 }
157         }
158         else
159         {
160                 chomp($v);
161                 my $key = "default_includedir_$packagename";
162                 $packagename =~ tr/a-z/A-Z/;
163                 $main::config{$key} = "$ret -DVERSION_$packagename=\"$v\"";
164                 $main::config{$key} =~ s/^\s+//g;
165                 $ret = $main::config{$key};
166                 print "\e[1;32m$ret\e[0m (version $v)\n";
167         }
168         $ret =~ s/^\s+//g;
169         return $ret;
170 }
171
172 sub vcheck($$)
173 {
174         my ($version1, $version2) = @_;
175         $version1 =~ s/\-r(\d+)/\.$1/g; # minor revs/patchlevels
176         $version2 =~ s/\-r(\d+)/\.$1/g;
177         $version1 =~ s/p(\d+)/\.$1/g;
178         $version2 =~ s/p(\d+)/\.$1/g;
179         $version1 =~ s/\-//g;
180         $version2 =~ s/\-//g;
181         $version1 =~ s/[a-z]//g;
182         $version2 =~ s/[a-z]//g;
183         my @v1 = split('\.', $version1);
184         my @v2 = split('\.', $version2);
185         for (my $curr = 0; $curr < scalar(@v1); $curr++)
186         {
187                 if ($v1[$curr] < $v2[$curr])
188                 {
189                         return 0;
190                 }
191         }
192         return 1;
193 }
194
195 sub pkgconfig_check_version($$;$)
196 {
197         my ($packagename, $version, $module) = @_;
198
199         extend_pkg_path();
200
201         print "Checking version of package \e[1;32m$packagename\e[0m is >= \e[1;32m$version\e[0m... ";
202
203         my $v = `pkg-config --modversion $packagename 2>/dev/null`;
204         if (defined $v)
205         {
206                 chomp($v);
207         }
208         if ((defined $v) && ($v ne ""))
209         {
210                 if (vcheck($v,$version) == 1)
211                 {
212                         print "\e[1;32mYes (version $v)\e[0m\n";
213                         return 1;
214                 }
215                 else
216                 {
217                         print "\e[1;32mNo (version $v)\e[0m\n";
218                         return 0;
219                 }
220         }
221         # If we didnt find it, we  cant definitively say its too old.
222         # Return ok, and let pkgconflibs() or pkgconfincludes() pick up
223         # the missing library later on.
224         print "\e[1;32mNo (not found)\e[0m\n";
225         return 1;
226 }
227
228 sub pkgconfig_get_lib_dirs($$$;$)
229 {
230         my ($packagename, $libname, $defaults, $module) = @_;
231
232         my $key = "default_libdir_$packagename";
233         if (exists $main::config{$key})
234         {
235                 print "Locating library directory for package \e[1;32m$packagename\e[0m for module \e[1;32m$module\e[0m... ";
236                 my $ret = $main::config{$key};
237                 print "\e[1;32m$ret\e[0m (cached)\n";
238                 return $ret;
239         }
240
241         extend_pkg_path();
242
243         print "Locating library directory for package \e[1;32m$packagename\e[0m for module \e[1;32m$module\e[0m... ";
244
245         my $v = `pkg-config --modversion $packagename 2>/dev/null`;
246         my $ret = `pkg-config --libs $packagename 2>/dev/null`;
247
248         my $foo = "";
249         if ((!defined $v) || ($v eq ""))
250         {
251                 $foo = `locate "$libname" | head -n 1`;
252                 $foo =~ /(.+)\Q$libname\E/;
253                 my $find = $1;
254                 chomp($find);
255                 if ((defined $find) && ($find ne "") && ($find ne $packagename))
256                 {
257                         print "(\e[1;32mFound via search\e[0m) ";
258                         $foo = "-L$1";
259                 }
260                 else
261                 {
262                         $foo = " ";
263                         undef $v;
264                 }
265                 $ret = "$foo";
266         }
267
268         if (($defaults ne "") && (($ret eq "") || (!defined $ret)))
269         {
270                 $ret = "$foo " . $defaults;
271         }
272         chomp($ret);
273         if ((($ret eq " ") || (!defined $ret)) && ((!defined $v) || ($v eq "")))
274         {
275                 my $key = "default_libdir_$packagename";
276                 if (exists $main::config{$key})
277                 {
278                         $ret = $main::config{$key};
279                 }
280                 else
281                 {
282                         $libname =~ s/^\///;
283                         promptstring("path to the directory containing $libname", $key, "/usr/lib",$packagename,"$packagename-libs");
284                         $main::config{$key} = "-L$main::config{$key}" . " $defaults";
285                         $main::config{$key} =~ s/^\s+//g;
286                         $ret = $main::config{$key};
287                         return $ret;
288                 }
289         }
290         else
291         {
292                 chomp($v);
293                 print "\e[1;32m$ret\e[0m (version $v)\n";
294                 my $key = "default_libdir_$packagename";
295                 $main::config{$key} = $ret;
296                 $main::config{$key} =~ s/^\s+//g;
297                 $ret =~ s/^\s+//g;
298         }
299         $ret =~ s/^\s+//g;
300         return $ret;
301 }
302
303 # Translate a $CompileFlags etc line and parse out function calls
304 # to functions within these modules at configure time.
305 sub translate_functions($$)
306 {
307         my ($line,$module) = @_;
308
309         eval
310         {
311                 $module =~ /modules*\/(.+?)$/;
312                 $module = $1;
313
314                 # This is only a cursory check, just designed to catch casual accidental use of backticks.
315                 # There are pleanty of ways around it, but its not supposed to be for security, just checking
316                 # that people are using the new configuration api as theyre supposed to and not just using
317                 # backticks instead of eval(), being as eval has accountability. People wanting to get around
318                 # the accountability will do so anyway.
319                 if (($line =~ /`/) && ($line !~ /eval\(.+?`.+?\)/))
320                 {
321                         die "Developers should no longer use backticks in configuration macros. Please use exec() and eval() macros instead. Offending line: $line (In module: $module)";
322                 }
323                 while ($line =~ /exec\("(.+?)"\)/)
324                 {
325                         print "Executing program for module \e[1;32m$module\e[0m ... \e[1;32m$1\e[0m\n";
326                         my $replace = `$1`;
327                         die $replace if ($replace =~ /Configuration failed/);
328                         chomp($replace);
329                         $line =~ s/exec\("(.+?)"\)/$replace/;
330                 }
331                 while ($line =~ /execruntime\("(.+?)"\)/)
332                 {
333                         $line =~ s/execruntime\("(.+?)"\)/`$1`/;
334                 }
335                 while ($line =~ /eval\("(.+?)"\)/)
336                 {
337                         print "Evaluating perl code for module \e[1;32m$module\e[0m ... ";
338                         my $tmpfile;
339                         do
340                         {
341                                 $tmpfile = tmpnam();
342                         } until sysopen(TF, $tmpfile, O_RDWR|O_CREAT|O_EXCL|O_NOFOLLOW, 0700);
343                         print "(Created and executed \e[1;32m$tmpfile\e[0m)\n";
344                         print TF $1;
345                         close TF;
346                         my $replace = `perl $tmpfile`;
347                         chomp($replace);
348                         $line =~ s/eval\("(.+?)"\)/$replace/;
349                 }
350                 while ($line =~ /pkgconflibs\("(.+?)","(.+?)","(.+?)"\)/)
351                 {
352                         my $replace = pkgconfig_get_lib_dirs($1, $2, $3, $module);
353                         $line =~ s/pkgconflibs\("(.+?)","(.+?)","(.+?)"\)/$replace/;
354                 }
355                 while ($line =~ /pkgconfversion\("(.+?)","(.+?)"\)/)
356                 {
357                         if (pkgconfig_check_version($1, $2, $module) != 1)
358                         {
359                                 die "Version of package $1 is too old. Please upgrade it to version \e[1;32m$2\e[0m or greater and try again.";
360                         }
361                         # This doesnt actually get replaced with anything
362                         $line =~ s/pkgconfversion\("(.+?)","(.+?)"\)//;
363                 }
364                 while ($line =~ /pkgconflibs\("(.+?)","(.+?)",""\)/)
365                 {
366                         my $replace = pkgconfig_get_lib_dirs($1, $2, "", $module);
367                         $line =~ s/pkgconflibs\("(.+?)","(.+?)",""\)/$replace/;
368                 }
369                 while ($line =~ /pkgconfincludes\("(.+?)","(.+?)",""\)/)
370                 {
371                         my $replace = pkgconfig_get_include_dirs($1, $2, "", $module);
372                         $line =~ s/pkgconfincludes\("(.+?)","(.+?)",""\)/$replace/;
373                 }
374                 while ($line =~ /pkgconfincludes\("(.+?)","(.+?)","(.+?)"\)/)
375                 {
376                         my $replace = pkgconfig_get_include_dirs($1, $2, $3, $module);
377                         $line =~ s/pkgconfincludes\("(.+?)","(.+?)","(.+?)"\)/$replace/;
378                 }
379                 while ($line =~ /rpath\("(.+?)"\)/)
380                 {
381                         my $replace = make_rpath($1,$module);
382                         $replace = "" if ($^O =~ /darwin/i);
383                         $line =~ s/rpath\("(.+?)"\)/$replace/;
384                 }
385         };
386         if ($@)
387         {
388                 my $err = $@;
389                 $err =~ s/at .+? line \d+.*//g;
390                 print "\n\nConfiguration failed. The following error occured:\n\n$err\n";
391                 exit;
392         }
393         else
394         {
395                 return $line;
396         }
397 }
398
399 1;
400