contrib/buildsystems/engine.pl

   1 #!/usr/bin/perl -w
   2 ######################################################################
   3 # Do not call this script directly!
   4 #
   5 # The generate script ensures that @INC is correct before the engine
   6 # is executed.
   7 #
   8 # Copyright (C) 2009 Marius Storm-Olsen <mstormo@gmail.com>
   9 ######################################################################
  10 use strict;
  11 use File::Basename;
  12 use File::Spec;
  13 use Cwd;
  14 use Generators;
  15
  16 my (%build_structure, %compile_options, @makedry);
  17 my $out_dir = getcwd();
  18 my $git_dir = $out_dir;
  19 $git_dir =~ s=\\=/=g;
  20 $git_dir = dirname($git_dir) while (!-e "$git_dir/git.c" && "$git_dir" ne "");
  21 die "Couldn't find Git repo" if ("$git_dir" eq "");
  22
  23 my @gens = Generators::available();
  24 my $gen = "Vcproj";
  25
  26 sub showUsage
  27 {
  28     my $genlist = join(', ', @gens);
  29     print << "EOM";
  30 generate usage:
  31   -g <GENERATOR>  --gen <GENERATOR> Specify the buildsystem generator    (default: $gen)
  32                                     Available: $genlist
  33   -o <PATH>       --out <PATH>      Specify output directory generation  (default: .)
  34   -i <FILE>       --in <FILE>       Specify input file, instead of running GNU Make
  35   -h,-?           --help            This help
  36 EOM
  37     exit 0;
  38 }
  39
  40 # Parse command-line options
  41 while (@ARGV) {
  42     my $arg = shift @ARGV;
  43     if ("$arg" eq "-h" || "$arg" eq "--help" || "$arg" eq "-?") {
  44         showUsage();
  45         exit(0);
  46     } elsif("$arg" eq "--out" || "$arg" eq "-o") {
  47         $out_dir = shift @ARGV;
  48     } elsif("$arg" eq "--gen" || "$arg" eq "-g") {
  49         $gen = shift @ARGV;
  50     } elsif("$arg" eq "--in" || "$arg" eq "-i") {
  51         my $infile = shift @ARGV;
  52         open(F, "<$infile") || die "Couldn't open file $infile";
  53         @makedry = <F>;
  54         close(F);
  55     }
  56 }
  57
  58 # NOT using File::Spec->rel2abs($path, $base) here, as
  59 # it fails badly for me in the msysgit environment
  60 $git_dir = File::Spec->rel2abs($git_dir);
  61 $out_dir = File::Spec->rel2abs($out_dir);
  62 my $rel_dir = makeOutRel2Git($git_dir, $out_dir);
  63
  64 # Print some information so the user feels informed
  65 print << "EOM";
  66 -----
  67 Generator: $gen
  68 Git dir:   $git_dir
  69 Out dir:   $out_dir
  70 -----
  71 Running GNU Make to figure out build structure...
  72 EOM
  73
  74 # Pipe a make --dry-run into a variable, if not already loaded from file
  75 @makedry = `cd $git_dir && make -n MSVC=1 V=1 2>/dev/null` if !@makedry;
  76
  77 # Parse the make output into usable info
  78 parseMakeOutput();
  79
  80 # Finally, ask the generator to start generating..
  81 Generators::generate($gen, $git_dir, $out_dir, $rel_dir, %build_structure);
  82
  83 # main flow ends here
  84 # -------------------------------------------------------------------------------------------------
  85
  86
  87 # 1) path: /foo/bar/baz        2) path: /foo/bar/baz   3) path: /foo/bar/baz
  88 #    base: /foo/bar/baz/temp      base: /foo/bar          base: /tmp
  89 #    rel:  ..                     rel:  baz               rel:  ../foo/bar/baz
  90 sub makeOutRel2Git
  91 {
  92     my ($path, $base) = @_;
  93     my $rel;
  94     if ("$path" eq "$base") {
  95         return ".";
  96     } elsif ($base =~ /^$path/) {
  97         # case 1
  98         my $tmp = $base;
  99         $tmp =~ s/^$path//;
 100         foreach (split('/', $tmp)) {
 101             $rel .= "../" if ("$_" ne "");
 102         }
 103     } elsif ($path =~ /^$base/) {
 104         # case 2
 105         $rel = $path;
 106         $rel =~ s/^$base//;
 107         $rel = "./$rel";
 108     } else {
 109         my $tmp = $base;
 110         foreach (split('/', $tmp)) {
 111             $rel .= "../" if ("$_" ne "");
 112         }
 113         $rel .= $path;
 114     }
 115     $rel =~ s/\/\//\//g; # simplify
 116     $rel =~ s/\/$//;     # don't end with /
 117     return $rel;
 118 }
 119
 120 sub parseMakeOutput
 121 {
 122     print "Parsing GNU Make output to figure out build structure...\n";
 123     my $line = 0;
 124     while (my $text = shift @makedry) {
 125         my $ate_next;
 126         do {
 127             $ate_next = 0;
 128             $line++;
 129             chomp $text;
 130             chop $text if ($text =~ /\r$/);
 131             if ($text =~ /\\$/) {
 132                 $text =~ s/\\$//;
 133                 $text .= shift @makedry;
 134                 $ate_next = 1;
 135             }
 136         } while($ate_next);
 137
 138         if($text =~ / -c /) {
 139             # compilation
 140             handleCompileLine($text, $line);
 141
 142         } elsif ($text =~ / -o /) {
 143             # linking executable
 144             handleLinkLine($text, $line);
 145
 146         } elsif ($text =~ /\.o / && $text =~ /\.a /) {
 147             # libifying
 148             handleLibLine($text, $line);
 149 #
 150 #        } elsif ($text =~ /^cp /) {
 151 #            # copy file around
 152 #
 153 #        } elsif ($text =~ /^rm -f /) {
 154 #            # shell command
 155 #
 156 #        } elsif ($text =~ /^make[ \[]/) {
 157 #            # make output
 158 #
 159 #        } elsif ($text =~ /^echo /) {
 160 #            # echo to file
 161 #
 162 #        } elsif ($text =~ /^if /) {
 163 #            # shell conditional
 164 #
 165 #        } elsif ($text =~ /^tclsh /) {
 166 #            # translation stuff
 167 #
 168 #        } elsif ($text =~ /^umask /) {
 169 #            # handling boilerplates
 170 #
 171 #        } elsif ($text =~ /\$\(\:\)/) {
 172 #            # ignore
 173 #
 174 #        } elsif ($text =~ /^FLAGS=/) {
 175 #            # flags check for dependencies
 176 #
 177 #        } elsif ($text =~ /^'\/usr\/bin\/perl' -MError -e/) {
 178 #            # perl commands for copying files
 179 #
 180 #        } elsif ($text =~ /generate-cmdlist\.sh/) {
 181 #            # command for generating list of commands
 182 #
 183 #        } elsif ($text =~ /^test / && $text =~ /|| rm -f /) {
 184 #            # commands removing executables, if they exist
 185 #
 186 #        } elsif ($text =~ /new locations or Tcl/) {
 187 #            # command for detecting Tcl/Tk changes
 188 #
 189 #        } elsif ($text =~ /mkdir -p/) {
 190 #            # command creating path
 191 #
 192 #        } elsif ($text =~ /: no custom templates yet/) {
 193 #            # whatever
 194 #
 195 #        } else {
 196 #            print "Unhandled (line: $line): $text\n";
 197         }
 198     }
 199
 200 #    use Data::Dumper;
 201 #    print "Parsed build structure:\n";
 202 #    print Dumper(%build_structure);
 203 }
 204
 205 # variables for the compilation part of each step
 206 my (@defines, @incpaths, @cflags, @sources);
 207
 208 sub clearCompileStep
 209 {
 210     @defines = ();
 211     @incpaths = ();
 212     @cflags = ();
 213     @sources = ();
 214 }
 215
 216 sub removeDuplicates
 217 {
 218     my (%dupHash, $entry);
 219     %dupHash = map { $_, 1 } @defines;
 220     @defines = keys %dupHash;
 221
 222     %dupHash = map { $_, 1 } @incpaths;
 223     @incpaths = keys %dupHash;
 224
 225     %dupHash = map { $_, 1 } @cflags;
 226     @cflags = keys %dupHash;
 227 }
 228
 229 sub handleCompileLine
 230 {
 231     my ($line, $lineno) = @_;
 232     my @parts = split(' ', $line);
 233     my $sourcefile;
 234     shift(@parts); # ignore cmd
 235     while (my $part = shift @parts) {
 236         if ("$part" eq "-o") {
 237             # ignore object file
 238             shift @parts;
 239         } elsif ("$part" eq "-c") {
 240             # ignore compile flag
 241         } elsif ("$part" eq "-c") {
 242         } elsif ($part =~ /^.?-I/) {
 243             push(@incpaths, $part);
 244         } elsif ($part =~ /^.?-D/) {
 245             push(@defines, $part);
 246         } elsif ($part =~ /^-/) {
 247             push(@cflags, $part);
 248         } elsif ($part =~ /\.(c|cc|cpp)$/) {
 249             $sourcefile = $part;
 250         } else {
 251             die "Unhandled compiler option @ line $lineno: $part";
 252         }
 253     }
 254     @{$compile_options{"${sourcefile}_CFLAGS"}} = @cflags;
 255     @{$compile_options{"${sourcefile}_DEFINES"}} = @defines;
 256     @{$compile_options{"${sourcefile}_INCPATHS"}} = @incpaths;
 257     clearCompileStep();
 258 }
 259
 260 sub handleLibLine
 261 {
 262     my ($line, $lineno) = @_;
 263     my (@objfiles, @lflags, $libout, $part);
 264     # kill cmd and rm 'prefix'
 265     $line =~ s/^rm -f .* && .* rcs //;
 266     my @parts = split(' ', $line);
 267     while ($part = shift @parts) {
 268         if ($part =~ /^-/) {
 269             push(@lflags, $part);
 270         } elsif ($part =~ /\.(o|obj)$/) {
 271             push(@objfiles, $part);
 272         } elsif ($part =~ /\.(a|lib)$/) {
 273             $libout = $part;
 274             $libout =~ s/\.a$//;
 275         } else {
 276             die "Unhandled lib option @ line $lineno: $part";
 277         }
 278     }
 279 #    print "LibOut: '$libout'\nLFlags: @lflags\nOfiles: @objfiles\n";
 280 #    exit(1);
 281     foreach (@objfiles) {
 282         my $sourcefile = $_;
 283         $sourcefile =~ s/\.o/.c/;
 284         push(@sources, $sourcefile);
 285         push(@cflags, @{$compile_options{"${sourcefile}_CFLAGS"}});
 286         push(@defines, @{$compile_options{"${sourcefile}_DEFINES"}});
 287         push(@incpaths, @{$compile_options{"${sourcefile}_INCPATHS"}});
 288     }
 289     removeDuplicates();
 290
 291     push(@{$build_structure{"LIBS"}}, $libout);
 292     @{$build_structure{"LIBS_${libout}"}} = ("_DEFINES", "_INCLUDES", "_CFLAGS", "_SOURCES",
 293                                              "_OBJECTS");
 294     @{$build_structure{"LIBS_${libout}_DEFINES"}} = @defines;
 295     @{$build_structure{"LIBS_${libout}_INCLUDES"}} = @incpaths;
 296     @{$build_structure{"LIBS_${libout}_CFLAGS"}} = @cflags;
 297     @{$build_structure{"LIBS_${libout}_LFLAGS"}} = @lflags;
 298     @{$build_structure{"LIBS_${libout}_SOURCES"}} = @sources;
 299     @{$build_structure{"LIBS_${libout}_OBJECTS"}} = @objfiles;
 300     clearCompileStep();
 301 }
 302
 303 sub handleLinkLine
 304 {
 305     my ($line, $lineno) = @_;
 306     my (@objfiles, @lflags, @libs, $appout, $part);
 307     my @parts = split(' ', $line);
 308     shift(@parts); # ignore cmd
 309     while ($part = shift @parts) {
 310         if ($part =~ /^-IGNORE/) {
 311             push(@lflags, $part);
 312         } elsif ($part =~ /^-[GRIMDO]/) {
 313             # eat compiler flags
 314         } elsif ("$part" eq "-o") {
 315             $appout = shift @parts;
 316         } elsif ("$part" eq "-lz") {
 317             push(@libs, "zlib.lib");
 318         } elsif ("$part" eq "-lcrypto") {
 319             push(@libs, "libeay32.lib");
 320             push(@libs, "ssleay32.lib");
 321         } elsif ($part =~ /^-/) {
 322             push(@lflags, $part);
 323         } elsif ($part =~ /\.(a|lib)$/) {
 324             $part =~ s/\.a$/.lib/;
 325             push(@libs, $part);
 326         } elsif ($part =~ /\.(o|obj)$/) {
 327             push(@objfiles, $part);
 328         } else {
 329             die "Unhandled lib option @ line $lineno: $part";
 330         }
 331     }
 332 #    print "AppOut: '$appout'\nLFlags: @lflags\nLibs  : @libs\nOfiles: @objfiles\n";
 333 #    exit(1);
 334     foreach (@objfiles) {
 335         my $sourcefile = $_;
 336         $sourcefile =~ s/\.o/.c/;
 337         push(@sources, $sourcefile);
 338         push(@cflags, @{$compile_options{"${sourcefile}_CFLAGS"}});
 339         push(@defines, @{$compile_options{"${sourcefile}_DEFINES"}});
 340         push(@incpaths, @{$compile_options{"${sourcefile}_INCPATHS"}});
 341     }
 342     removeDuplicates();
 343
 344     removeDuplicates();
 345     push(@{$build_structure{"APPS"}}, $appout);
 346     @{$build_structure{"APPS_${appout}"}} = ("_DEFINES", "_INCLUDES", "_CFLAGS", "_LFLAGS",
 347                                              "_SOURCES", "_OBJECTS", "_LIBS");
 348     @{$build_structure{"APPS_${appout}_DEFINES"}} = @defines;
 349     @{$build_structure{"APPS_${appout}_INCLUDES"}} = @incpaths;
 350     @{$build_structure{"APPS_${appout}_CFLAGS"}} = @cflags;
 351     @{$build_structure{"APPS_${appout}_LFLAGS"}} = @lflags;
 352     @{$build_structure{"APPS_${appout}_SOURCES"}} = @sources;
 353     @{$build_structure{"APPS_${appout}_OBJECTS"}} = @objfiles;
 354     @{$build_structure{"APPS_${appout}_LIBS"}} = @libs;
 355     clearCompileStep();
 356 }