4 use File::Basename qw(&basename &dirname);
8 # List explicitly here the variables you want Configure to
9 # generate. Metaconfig only looks for shell variables, so you
10 # have to mention them as if they were shell variables, not
11 # %Config entries. Thus you write
13 # to ensure Configure will look for $Config{startperl}.
16 # This forces PL files to create target in same directory as PL file.
17 # This is so that make depend always knows where to find PL derivatives.
20 $file = basename($0, '.PL');
21 $file .= '.com' if $^O eq 'VMS';
23 open OUT,">$file" or die "Can't create $file: $!";
25 print "Extracting $file (with variable substitutions)\n";
27 # In this section, perl variables will be expanded during extraction.
28 # You can use $Config{...} to use Configure variables.
30 print OUT <<"!GROK!THIS!";
32 eval 'exec $Config{perlpath} -S \$0 \${1+"\$@"}'
33 if \$running_under_some_shell;
36 # In the following, perl variables are not expanded during extraction.
38 print OUT <<'!NO!SUBS!';
43 use File::Basename qw(&basename &dirname);
48 $Getopt::Long::bundling_override = 1;
49 $Getopt::Long::passthrough = 0;
50 $Getopt::Long::ignore_case = 0;
52 my $pathsep = ($Config{'osname'} eq 'MSWin32')? "\\" : "/"; # MAJOR HACK. SHOULD
57 unshift @ARGV, split ' ', $ENV{PERLCC_OPTS} if $ENV{PERLCC_OPTS};
89 _usage() if (!_checkopts());
90 push(@ARGV, _maketempfile()) if ($options->{'e'});
98 --------------------------------------------------------------------------------
100 --------------------------------------------------------------------------------
110 my ($program_ext, $module_ext) = _getRegexps();
111 my ($obj, $objfile, $so, $type, $backend, $gentype);
113 $backend = $options->{'b'} ? 'Bytecode' : $options->{'opt'} ? 'CC' : 'C';
115 $gentype = $options->{'b'} ? 'Bytecode' : 'C';
118 (($file =~ m"@$program_ext") && ($file !~ m"@$module_ext"))
119 || (defined($options->{'prog'}) || defined($options->{'run'}))
126 $obj = $objfile = $options->{'o'} ? $options->{'o'} : "${file}c";
130 $objfile = $options->{'C'} ? $options->{'C'} : "$file.c";
131 $obj = $options->{'o'} ? $options->{'o'}
132 : _getExecutable( $file,$program_ext);
138 elsif (($file =~ m"@$module_ext") || ($options->{'mod'}))
144 $obj = $objfile = $options->{'o'} ? $options->{'o'} : "${file}c";
148 die "Shared objects are not supported on Win32 yet!!!!\n"
149 if ($Config{'osname'} eq 'MSWin32');
151 $objfile = $options->{'C'} ? $options->{'C'} : "$file.c";
152 $obj = $options->{'o'} ? $options->{'o'}
153 : _getExecutable($file, $module_ext);
154 $so = "$obj.$Config{so}";
161 _error("noextension", $file, $program_ext, $module_ext);
165 if ($type eq 'program')
167 _print("Making $gentype($objfile) for $file!\n", 36 );
169 my $errcode = _createCode($backend, $objfile, $file);
170 (_print( "ERROR: In generating code for $file!\n", -1), return())
173 _print("Compiling C($obj) for $file!\n", 36 ) if (!$options->{'gen'} &&
175 $errcode = _compileCode($file, $objfile, $obj)
176 if (!$options->{'gen'} &&
181 _print( "ERROR: In compiling code for $objfile !\n", -1);
182 my $ofile = File::Basename::basename($objfile);
183 $ofile =~ s"\.c$"\.o"s;
185 _removeCode("$ofile");
189 _runCode($objfile) if ($options->{'run'} && $options->{'b'});
190 _runCode($obj) if ($options->{'run'} && !$options->{'b'});
192 _removeCode($objfile) if (($options->{'b'} &&
193 ($options->{'e'} && !$options->{'o'})) ||
195 (!$options->{'sav'} ||
196 ($options->{'e'} && !$options->{'C'}))));
198 _removeCode($file) if ($options->{'e'});
200 _removeCode($obj) if (!$options->{'b'} &&
202 !$options->{'sav'} && !$options->{'o'}) ||
203 ($options->{'run'} && !$options->{'sav'})));
207 _print( "Making $gentype($objfile) for $file!\n", 36 );
208 my $errcode = _createCode($backend, $objfile, $file, $obj);
209 (_print( "ERROR: In generating code for $file!\n", -1), return())
212 _print( "Compiling C($so) for $file!\n", 36 ) if (!$options->{'gen'} &&
216 _compileCode($file, $objfile, $obj, $so ) if (!$options->{'gen'} &&
219 (_print( "ERROR: In compiling code for $objfile!\n", -1), return())
226 my ($sourceprog, $ext) = @_;
229 if (defined($options->{'regex'}))
231 eval("(\$obj = \$sourceprog) =~ $options->{'regex'}");
232 return(0) if (_error('badeval', $@));
233 return(0) if (_error('equal', $obj, $sourceprog));
235 elsif (defined ($options->{'ext'}))
237 ($obj = $sourceprog) =~ s"@$ext"$options->{ext}"g;
238 return(0) if (_error('equal', $obj, $sourceprog));
240 elsif (defined ($options->{'run'}))
246 ($obj = $sourceprog) =~ s"@$ext""g;
247 return(0) if (_error('equal', $obj, $sourceprog));
254 my ( $backend, $generated_file, $file, $final_output ) = @_;
256 my $output_switch = "o";
260 if ($backend eq "Bytecode")
264 open(GENFILE, "> $generated_file") || die "Can't open $generated_file: $!";
266 print GENFILE "#!$^X\n" if @_ == 3;
267 print GENFILE "use ByteLoader $ByteLoader::VERSION;\n";
273 if (@_ == 3) # compiling a program
275 chmod $generated_file, 0777 & ~umask if $backend eq "Bytecode";
276 my $null=File::Spec->devnull;
277 _print( "$^X -I@INC -MB::Stash -c $file\n", 36);
278 my @stash=`$^X -I@INC -MB::Stash -c $file 2>$null`;
279 my $stash=$stash[-1];
282 _print( "$^X -I@INC -MO=$backend,$stash $file\n", 36);
283 $return = _run("$^X -I@INC -MO=$backend,$stash,-$output_switch$generated_file $file", 9);
286 else # compiling a shared object
289 "$^X -I@INC -MO=$backend,-m$final_output $file\n", 36);
291 _run("$^X -I@INC -MO=$backend,-m$final_output,-$output_switch$generated_file $file ", 9);
298 my ($sourceprog, $generated_cfile, $output_executable, $shared_object) = @_;
301 if (@_ == 3) # just compiling a program
304 _ccharness('static', $sourceprog, "-o", $output_executable,
310 my $object_file = $generated_cfile;
311 $object_file =~ s"\.c$"$Config{_o}";
313 $return[0] = _ccharness('compile', $sourceprog, "-c", $generated_cfile);
314 $return[1] = _ccharness
318 $shared_object, $object_file
320 return(1) if (grep ($_, @return));
327 my ($executable) = @_;
328 _print("$executable $options->{'argv'}\n", 36);
329 _run("$executable $options->{'argv'}", -1 );
335 unlink($file) if (-e $file);
344 my $sourceprog = shift(@args);
345 my ($libdir, $incdir);
347 if (-d "$Config{installarchlib}/CORE")
349 $libdir = "-L$Config{installarchlib}/CORE";
350 $incdir = "-I$Config{installarchlib}/CORE";
354 $libdir = "-L.. -L.";
355 $incdir = "-I.. -I.";
358 $libdir .= " -L$options->{L}" if (defined($options->{L}));
359 $incdir .= " -I$options->{L}" if (defined($options->{L}));
366 if (!grep(/^-[cS]$/, @args))
368 my $lperl = $^O eq 'os2' ? '-llibperl'
369 : $^O eq 'MSWin32' ? "$Config{archlibexp}\\CORE\\perl.lib"
372 $optimize = $Config{'optimize'} =~ /-O\d/ ? '' : $Config{'optimize'};
374 $flags = $type eq 'dynamic' ? $Config{lddlflags} : $Config{ldflags};
375 $linkargs = "$flags $libdir $lperl @Config{libs}";
378 my $libs = _getSharedObjects($sourceprog);
380 my $ccflags = $Config{ccflags};
381 $ccflags .= ' -DUSEIMPORTLIB' if $Config{osname} =~ /cygwin/i;
382 my $cccmd = "$Config{cc} $ccflags $optimize $incdir "
383 ."@args $dynaloader $linkargs @$libs";
385 _print ("$cccmd\n", 36);
389 sub _getSharedObjects
391 my ($sourceprog) = @_;
392 my ($tmpfile, $incfile);
393 my (@sharedobjects, @libraries);
397 ($tmpprog = $sourceprog) =~ s"(.*)[\\/](.*)"$2";
399 my $tempdir= File::Spec->tmpdir;
401 $tmpfile = "$tempdir/$tmpprog.tst";
402 $incfile = "$tempdir/$tmpprog.val";
404 my $fd = new FileHandle("> $tmpfile") || die "Couldn't open $tmpfile!\n";
406 new FileHandle("$sourceprog") || die "Couldn't open $sourceprog!\n";
410 my \$fh3 = new FileHandle("> $incfile")
411 || die "Couldn't open $incfile\\n";
414 foreach \$key (keys(\%INC)) { print \$fh3 "\$key:\$INC{\$key}\\n"; }
419 print $fd ( <$fd2> );
422 _print("$^X -I@INC $tmpfile\n", 36);
423 _run("$^X -I@INC $tmpfile", 9 );
425 $fd = new FileHandle ("$incfile");
436 foreach $line (@lines)
440 my ($modname, $modpath) = split(':', $line);
441 my ($dir, $file) = ($modpath=~ m"(.*)[\\/]($modname)");
443 if ($autolib = _lookforAuto($dir, $file)) { push(@return, $autolib); }
452 # if ($Config{'osname'} eq 'MSWin32')
453 # { $return = "C:\\TEMP\\comp$$.p"; }
455 # { $return = "/tmp/comp$$.p"; }
457 $return = "comp$$.p";
459 my $fd = new FileHandle( "> $return") || die "Couldn't open $return!\n";
460 print $fd $options->{'e'};
469 my ($dir, $file) = @_;
471 my ($relabs, $relshared);
474 my $sharedextension = $^O =~ /MSWin32|cygwin|os2/i
475 ? $Config{_a} : ".$Config{so}";
476 ($prefix = $file) =~ s"(.*)\.pm"$1";
478 my ($tmp, $modname) = ($prefix =~ m"(?:(.*)[\\/]){0,1}(.*)"s);
480 $relshared = "$pathsep$prefix$pathsep$modname$sharedextension";
481 $relabs = "$pathsep$prefix$pathsep$modname$Config{_a}";
482 # HACK . WHY DOES _a HAVE A '.'
485 my @searchpaths = map("$_${pathsep}auto", @INC);
488 foreach $path (@searchpaths)
490 if (-e ($return = "$path$relshared")) { return($return); }
491 if (-e ($return = "$path$relabs")) { return($return); }
496 sub _getRegexps # make the appropriate regexps for making executables,
499 my ($program_ext, $module_ext) = ([],[]);
502 @$program_ext = ($ENV{PERL_SCRIPT_EXT})? split(':', $ENV{PERL_SCRIPT_EXT}) :
503 ('.p$', '.pl$', '.bat$');
506 @$module_ext = ($ENV{PERL_MODULE_EXT})? split(':', $ENV{PERL_MODULE_EXT}) :
509 _mungeRegexp( $program_ext );
510 _mungeRegexp( $module_ext );
512 return($program_ext, $module_ext);
519 grep(s:(^|[^\\])\.:$1\x00\\.:g, @$regexp);
520 grep(s:(^|[^\x00])\\\.:$1\.:g, @$regexp);
521 grep(s:\x00::g, @$regexp);
526 my ($type, @args) = @_;
528 if ($type eq 'equal')
531 if ($args[0] eq $args[1])
533 _print ("ERROR: The object file '$args[0]' does not generate a legitimate executable file! Skipping!\n", -1);
537 elsif ($type eq 'badeval')
541 _print ("ERROR: $args[0]\n", -1);
545 elsif ($type eq 'noextension')
547 my $progext = join(',', @{$args[1]});
548 my $modext = join(',', @{$args[2]});
559 ERROR: '$args[0]' does not have a proper extension! Proper extensions are:
562 SHARED OBJECT: $modext
564 Use the '-prog' flag to force your files to be interpreted as programs.
565 Use the '-mod' flag to force your files to be interpreted as modules.
579 if ($options->{'log'})
581 $_fh = new FileHandle(">> $options->{'log'}") || push(@errors, "ERROR: Couldn't open $options->{'log'}\n");
584 if ($options->{'b'} && $options->{'c'})
587 "ERROR: The '-b' and '-c' options are incompatible. The '-c' option specifies
588 a name for the intermediate C code but '-b' generates byte code
591 if ($options->{'b'} && ($options->{'sav'} || $options->{'gen'}))
594 "ERROR: The '-sav' and '-gen' options are incompatible with the '-b' option.
595 They ask for intermediate C code to be saved by '-b' generates byte
599 if (($options->{'c'}) && (@ARGV > 1) && ($options->{'sav'} ))
602 "ERROR: The '-sav' and '-C' options are incompatible when you have more than
603 one input file! ('-C' explicitly names resulting C code, '-sav' saves it,
604 and hence, with more than one file, the c code will be overwritten for
605 each file that you compile)\n");
607 if (($options->{'o'}) && (@ARGV > 1))
610 "ERROR: The '-o' option is incompatible when you have more than one input
611 file! (-o explicitly names the resulting file, hence, with more than
612 one file the names clash)\n");
615 if ($options->{'e'} && ($options->{'sav'} || $options->{'gen'}) &&
619 "ERROR: You need to specify where you are going to save the resulting
620 C code when using '-sav' and '-e'. Use '-C'.\n");
623 if (($options->{'regex'} || $options->{'run'} || $options->{'o'})
624 && $options->{'gen'})
627 "ERROR: The options '-regex', '-run', and '-o' are incompatible with '-gen'.
628 '-gen' says to stop at C generation, and the other three modify the
629 compilation and/or running process!\n");
632 if ($options->{'run'} && $options->{'mod'})
635 "ERROR: Can't run modules that you are compiling! '-run' and '-mod' are
639 if ($options->{'e'} && @ARGV)
642 "ERROR: The option '-e' needs to be all by itself without any other
645 if ($options->{'e'} && !($options->{'o'} || $options->{'run'}))
647 $options->{'run'} = 1;
650 if (!defined($options->{'verbose'}))
652 $options->{'verbose'} = ($options->{'log'})? 64 : 7;
657 if ($options->{'verbose'} =~ m"[^tagfcd]" &&
658 !( $options->{'verbose'} eq '0' ||
659 ($options->{'verbose'} < 64 && $options->{'verbose'} > 0)))
663 "ERROR: Illegal verbosity level. Needs to have either the letters
664 't','a','g','f','c', or 'd' in it or be between 0 and 63, inclusive.\n");
667 $options->{'verbose'} = ($options->{'verbose'} =~ m"[tagfcd]")?
668 ($options->{'verbose'} =~ m"d") * 32 +
669 ($options->{'verbose'} =~ m"c") * 16 +
670 ($options->{'verbose'} =~ m"f") * 8 +
671 ($options->{'verbose'} =~ m"t") * 4 +
672 ($options->{'verbose'} =~ m"a") * 2 +
673 ($options->{'verbose'} =~ m"g") * 1
674 : $options->{'verbose'};
676 if (!$verbose_error && ( $options->{'log'} &&
678 ($options->{'verbose'} & 8) ||
679 ($options->{'verbose'} & 16) ||
680 ($options->{'verbose'} & 32 )
686 "ERROR: The verbosity level '$options->{'verbose'}' does not output anything
687 to a logfile, and you specified '-log'!\n");
690 if (!$verbose_error && ( !$options->{'log'} &&
692 ($options->{'verbose'} & 8) ||
693 ($options->{'verbose'} & 16) ||
694 ($options->{'verbose'} & 32) ||
695 ($options->{'verbose'} & 64)
701 "ERROR: The verbosity level '$options->{'verbose'}' requires that you also
702 specify a logfile via '-log'\n");
706 (_print( "\n". join("\n", @errors), -1), return(0)) if (@errors);
712 my ($text, $flag ) = @_;
714 my $logflag = int($flag/8) * 8;
715 my $regflag = $flag % 8;
717 if ($flag == -1 || ($flag & $options->{'verbose'}))
719 my $dolog = ((($logflag & $options->{'verbose'}) || $flag == -1)
720 && $options->{'log'});
722 my $doreg = (($regflag & $options->{'verbose'}) || $flag == -1);
724 if ($doreg) { print( STDERR $text ); }
725 if ($dolog) { print $_fh $text; }
731 my ($command, $flag) = @_;
733 my $logflag = ($flag != -1)? int($flag/8) * 8 : 0;
734 my $regflag = $flag % 8;
736 if ($flag == -1 || ($flag & $options->{'verbose'}))
738 my $dolog = ($logflag & $options->{'verbose'} && $options->{'log'});
739 my $doreg = (($regflag & $options->{'verbose'}) || $flag == -1);
741 if ($doreg && !$dolog)
743 print _interruptrun("$command");
745 elsif ($doreg && $dolog)
747 my $text = _interruptrun($command);
753 my $text = _interruptrun($command);
759 _interruptrun($command);
767 my $pid = open (FD, "$command |");
769 local($SIG{HUP}) = sub {
771 # HACK... 2>&1 doesn't propogate
772 # kill, comment out for quick and dirty
773 # process killing of child.
778 local($SIG{INT}) = sub {
780 # HACK... 2>&1 doesn't propogate
781 # kill, comment out for quick and dirty
782 # process killing of child.
788 ($ENV{'PERLCC_TIMEOUT'} &&
789 $Config{'osname'} ne 'MSWin32' && $command =~ m"^perlc");
794 local($SIG{ALRM}) = sub { die "INFINITE LOOP"; };
795 alarm($ENV{'PERLCC_TIMEOUT'}) if ($needalarm);
796 $text = join('', <FD>);
797 alarm(0) if ($needalarm);
802 eval { kill 'HUP', $pid; };
803 _print("SYSTEM TIMEOUT (infinite loop?)\n", 36);
816 Usage: $0 <file_list>
818 WARNING: The whole compiler suite ('perlcc' included) is considered VERY
819 experimental. Use for production purposes is strongly discouraged.
822 -L < extra library dirs for installation (form of 'dir1:dir2') >
823 -I < extra include dirs for installation (form of 'dir1:dir2') >
824 -C < explicit name of resulting C code >
825 -o < explicit name of resulting executable >
826 -e < to compile 'one liners'. Need executable name (-o) or '-run'>
827 -regex < rename regex, -regex 's/\.p/\.exe/' compiles a.p to a.exe >
828 -verbose < verbose level < 1-63, or following letters 'gatfcd' >
829 -argv < arguments for the executables to be run via '-run' or '-e' >
832 -b ( to generate byte code )
833 -opt ( to generated optimised C code. May not work in some cases. )
834 -gen ( to just generate the C code. Implies '-sav' )
835 -sav ( to save intermediate C code, (and executables with '-run'))
836 -run ( to run the compiled program on the fly, as were interpreted.)
837 -prog ( to indicate that the files on command line are programs )
838 -mod ( to indicate that the files on command line are modules )
852 perlcc - frontend for perl compiler
856 %prompt perlcc a.p # compiles into executable 'a'
858 %prompt perlcc A.pm # compile into 'A.so'
860 %prompt perlcc a.p -o execute # compiles 'a.p' into 'execute'.
862 %prompt perlcc a.p -o execute -run # compiles 'a.p' into execute, runs on
865 %prompt perlcc a.p -o execute -run -argv 'arg1 arg2 arg3'
866 # compiles into execute, runs with
867 # arg1 arg2 arg3 as @ARGV
869 %prompt perlcc a.p b.p c.p -regex 's/\.p/\.exe'
870 # compiles into 'a.exe','b.exe','c.exe'.
872 %prompt perlcc a.p -log compilelog # compiles into 'a', saves compilation
873 # info into compilelog, as well
874 # as mirroring to screen
876 %prompt perlcc a.p -log compilelog -verbose cdf
877 # compiles into 'a', saves compilation
878 # info into compilelog, being silent
881 %prompt perlcc a.p -C a.c -gen # generates C code (into a.c) and
882 # stops without compile.
884 %prompt perlcc a.p -L ../lib a.c
885 # Compiles with the perl libraries
886 # inside ../lib included.
890 'perlcc' is the frontend into the perl compiler. Typing 'perlcc a.p'
891 compiles the code inside a.p into a standalone executable, and
892 perlcc A.pm will compile into a shared object, A.so, suitable for inclusion
893 into a perl program via "use A".
895 There are quite a few flags to perlcc which help with such issues as compiling
896 programs in bulk, testing compiled programs for compatibility with the
897 interpreter, and controlling.
903 =item -L < library_directories >
905 Adds directories in B<library_directories> to the compilation command.
907 =item -I < include_directories >
909 Adds directories inside B<include_directories> to the compilation command.
911 =item -C < c_code_name >
913 Explicitly gives the name B<c_code_name> to the generated file containing
914 the C code which is to be compiled. Can only be used if compiling one file
917 =item -o < executable_name >
919 Explicitly gives the name B<executable_name> to the executable which is to be
920 compiled. Can only be used if compiling one file on the command line.
922 =item -e < perl_line_to_execute>
924 Compiles 'one liners', in the same way that B<perl -e> runs text strings at
925 the command line. Default is to have the 'one liner' be compiled, and run all
926 in one go (see B<-run>); giving the B<-o> flag saves the resultant executable,
927 rather than throwing it away. Use '-argv' to pass arguments to the executable
932 Generates bytecode instead of C code.
936 Uses the optimized C backend (C<B::CC>)rather than the simple C backend
937 (C<B::C>). Beware that the optimized C backend creates very large
938 switch structures and structure initializations. Many C compilers
939 find it a challenge to compile the resulting output in finite amounts
940 of time. Many Perl features such as C<goto LABEL> are also not
941 supported by the optimized C backend. The simple C backend should
942 work in more instances, but can only offer modest speed increases.
944 =item -regex <rename_regex>
946 Gives a rule B<rename_regex> - which is a legal perl regular expression - to
947 create executable file names.
949 =item -verbose <verbose_level>
951 Show exactly what steps perlcc is taking to compile your code. You can
952 change the verbosity level B<verbose_level> much in the same way that
953 the C<-D> switch changes perl's debugging level, by giving either a
954 number which is the sum of bits you want or a list of letters
955 representing what you wish to see. Here are the verbosity levels so
958 Bit 1(g): Code Generation Errors to STDERR
959 Bit 2(a): Compilation Errors to STDERR
960 Bit 4(t): Descriptive text to STDERR
961 Bit 8(f): Code Generation Errors to file (B<-log> flag needed)
962 Bit 16(c): Compilation Errors to file (B<-log> flag needed)
963 Bit 32(d): Descriptive text to file (B<-log> flag needed)
965 If the B<-log> tag is given, the default verbose level is 63 (ie: mirroring
966 all of perlcc's output to both the screen and to a log file). If no B<-log>
967 tag is given, then the default verbose level is 7 (ie: outputting all of
968 perlcc's output to STDERR).
970 NOTE: Because of buffering concerns, you CANNOT shadow the output of '-run' to
971 both a file, and to the screen! Suggestions are welcome on how to overcome this
972 difficulty, but for now it simply does not work properly, and hence will only go
977 Opens, for append, a logfile to save some or all of the text for a given
978 compile command. No rewrite version is available, so this needs to be done
981 =item -argv <arguments>
983 In combination with C<-run> or C<-e>, tells perlcc to run the resulting
984 executable with the string B<arguments> as @ARGV.
988 Tells perl to save the intermediate C code. Usually, this C code is the name
989 of the perl code, plus '.c'; 'perlcode.p' gets generated in 'perlcode.p.c',
990 for example. If used with the C<-e> operator, you need to tell perlcc where to
991 save resulting executables.
995 Tells perlcc to only create the intermediate C code, and not compile the
996 results. Does an implicit B<-sav>, saving the C code rather than deleting it.
1000 Immediately run the perl code that has been generated. NOTE: IF YOU GIVE THE
1001 B<-run> FLAG TO B<perlcc>, THEN THE REST OF @ARGV WILL BE INTERPRETED AS
1002 ARGUMENTS TO THE PROGRAM THAT YOU ARE COMPILING.
1006 Indicate that the programs at the command line are programs, and should be
1007 compiled as such. B<perlcc> will automatically determine files to be
1008 programs if they have B<.p>, B<.pl>, B<.bat> extensions.
1012 Indicate that the programs at the command line are modules, and should be
1013 compiled as such. B<perlcc> will automatically determine files to be
1014 modules if they have the extension B<.pm>.
1020 Most of the work of B<perlcc> is done at the command line. However, you can
1021 change the heuristic which determines what is a module and what is a program.
1022 As indicated above, B<perlcc> assumes that the extensions:
1024 .p$, .pl$, and .bat$
1026 indicate a perl program, and:
1030 indicate a library, for the purposes of creating executables. And furthermore,
1031 by default, these extensions will be replaced (and dropped) in the process of
1032 creating an executable.
1034 To change the extensions which are programs, and which are modules, set the
1035 environmental variables:
1040 These two environmental variables take colon-separated, legal perl regular
1041 expressions, and are used by perlcc to decide which objects are which.
1044 setenv PERL_SCRIPT_EXT '.prl$:.perl$'
1045 prompt% perlcc sample.perl
1047 will compile the script 'sample.perl' into the executable 'sample', and
1049 setenv PERL_MODULE_EXT '.perlmod$:.perlmodule$'
1051 prompt% perlcc sample.perlmod
1053 will compile the module 'sample.perlmod' into the shared object
1056 NOTE: the '.' in the regular expressions for PERL_SCRIPT_EXT and PERL_MODULE_EXT
1057 is a literal '.', and not a wild-card. To get a true wild-card, you need to
1058 backslash the '.'; as in:
1060 setenv PERL_SCRIPT_EXT '\.\.\.\.\.'
1062 which would have the effect of compiling ANYTHING (except what is in
1063 PERL_MODULE_EXT) into an executable with 5 less characters in its name.
1065 The PERLCC_OPTS environment variable can be set to the default flags
1066 that must be used by the compiler.
1068 The PERLCC_TIMEOUT environment variable can be set to the number of
1069 seconds to wait for the backends before giving up. This is sometimes
1070 necessary to avoid some compilers taking forever to compile the
1071 generated output. May not work on Windows and similar platforms.
1075 'perlcc' uses a temporary file when you use the B<-e> option to evaluate
1076 text and compile it. This temporary file is 'perlc$$.p'. The temporary C code is
1077 perlc$$.p.c, and the temporary executable is perlc$$.
1079 When you use '-run' and don't save your executable, the temporary executable is
1084 The whole compiler suite (C<perlcc> included) should be considered very
1085 experimental. Use for production purposes is strongly discouraged.
1087 perlcc currently cannot compile shared objects on Win32. This should be fixed
1090 Bugs in the various compiler backends still exist, and are perhaps too
1091 numerous to list here.
1097 close OUT or die "Can't close $file: $!";
1098 chmod 0755, $file or die "Can't reset permissions for $file: $!\n";
1099 exec("$Config{'eunicefix'} $file") if $Config{'eunicefix'} ne ':';