generate_export_header.pl

   1 #!/usr/bin/env perl
   2 eval '(exit $?0)' && eval 'exec perl -w -S $0 ${1+"$@"}'
   3     & eval 'exec perl -w -S $0 $argv:q'
   4     if 0;
   5
   6 # ******************************************************************
   7 #      Author: Chad Elliott
   8 #        Date: 3/1/2006
   9 # Description: Generate an export header file for use with various compilers
  10 # ******************************************************************
  11
  12 # ******************************************************************
  13 # Pragma Section
  14 # ******************************************************************
  15
  16 use strict;
  17 use FileHandle;
  18 use File::Basename;
  19
  20 # ******************************************************************
  21 # Data Section
  22 # ******************************************************************
  23
  24 my $version = '1.2';
  25
  26 # ******************************************************************
  27 # Subroutine Section
  28 # ******************************************************************
  29
  30 sub generate_export_header {
  31   my($name, $output) = @_;
  32   my $fh = new FileHandle();
  33   my $status = 0;
  34
  35   if (open($fh, ">$output")) {
  36     $name = uc($name);
  37     print $fh <<EOM
  38 #ifndef ${name}_EXPORT_H
  39 #define ${name}_EXPORT_H
  40
  41 #if !defined(${name}_HAS_DLL)
  42 # if defined(${name}_AS_STATIC_LIBS)
  43 #   define ${name}_HAS_DLL 0
  44 # else
  45 #   define ${name}_HAS_DLL 1
  46 # endif
  47 #endif
  48
  49 #if (${name}_HAS_DLL == 1)
  50 #  if defined(__SUNPRO_CC) && (__SUNPRO_CC >= 0x550)
  51 #    if defined(${name}_BUILD_DLL)
  52 #      define ${name}_Export __symbolic
  53 #    else
  54 #      define ${name}_Export __global
  55 #    endif
  56 #  elif defined(WIN32) || defined(UNDER_CE) || defined(__CYGWIN__)
  57 #    if defined(${name}_BUILD_DLL)
  58 #      define ${name}_Export __declspec(dllexport)
  59 #    else
  60 #      define ${name}_Export __declspec(dllimport)
  61 #    endif
  62 #  elif (defined(__GNUC__) && (__GNUC__ >= 4))
  63 #    if defined(${name}_BUILD_DLL)
  64 #      define ${name}_Export __attribute__((visibility("default")))
  65 #    else
  66 #      define ${name}_Export
  67 #    endif
  68 #  else
  69 #    define ${name}_Export
  70 #  endif
  71 #else
  72 #  define ${name}_Export
  73 #endif
  74
  75 #endif
  76 EOM
  77 ;
  78     close($fh);
  79     print "Output written to $output\n";
  80   }
  81   else {
  82     print STDERR "ERROR: Unable to write to $output\n";
  83     ++$status;
  84   }
  85
  86   return $status;
  87 }
  88
  89 sub usageAndExit {
  90   my $str = shift;
  91
  92   print STDERR "$str\n" if (defined $str);
  93   print STDERR "Generate Export Header v$version\n",
  94                "Usage: ", basename($0), " <library name> [output file]\n";
  95   exit(0);
  96 }
  97
  98 # ******************************************************************
  99 # Main Section
 100 # ******************************************************************
 101
 102 my $name   = shift;
 103 my $output = shift;
 104
 105 if (!defined $name) {
 106   usageAndExit();
 107 }
 108 elsif (index($name, '-') == 0) {
 109   usageAndExit();
 110 }
 111
 112 if (!defined $output) {
 113   $output = $name . '_' . ($name =~ /^[A-Z]/ ? 'E' : 'e') .
 114             'xport.h';
 115 }
 116
 117 if ($name =~ s/^\d+//) {
 118   print "WARNING: Removing beginning numbers from export name.\n";
 119 }
 120 if ($name =~ s/-\s/_/g) {
 121   print "WARNING: Converting dashes and ",
 122         "whitespace to underscores in export name.\n";
 123 }
 124
 125 exit(generate_export_header($name, $output));