summaryrefslogtreecommitdiff
path: root/contrib/buildsystems/engine.pl
blob: 9db3d43a1eb2f7528ebd29a5c18ebe415abd45cb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
#!/usr/bin/perl -w
######################################################################
# Do not call this script directly!
#
# The generate script ensures that @INC is correct before the engine
# is executed.
#
# Copyright (C) 2009 Marius Storm-Olsen <mstormo@gmail.com>
######################################################################
use strict;
use File::Basename;
use File::Spec;
use Cwd;
use Generators;
use Text::ParseWords;
 
my (%build_structure, %compile_options, @makedry);
my $out_dir = getcwd();
my $git_dir = $out_dir;
$git_dir =~ s=\\=/=g;
$git_dir = dirname($git_dir) while (!-e "$git_dir/git.c" && "$git_dir" ne "");
die "Couldn't find Git repo" if ("$git_dir" eq "");
 
my @gens = Generators::available();
my $gen = "Vcproj";
 
sub showUsage
{
    my $genlist = join(', ', @gens);
    print << "EOM";
generate usage:
  -g <GENERATOR>  --gen <GENERATOR> Specify the buildsystem generator    (default: $gen)
                                    Available: $genlist
  -o <PATH>       --out <PATH>      Specify output directory generation  (default: .)
  -i <FILE>       --in <FILE>       Specify input file, instead of running GNU Make
  -h,-?           --help            This help
EOM
    exit 0;
}
 
# Parse command-line options
while (@ARGV) {
    my $arg = shift @ARGV;
    if ("$arg" eq "-h" || "$arg" eq "--help" || "$arg" eq "-?") {
	showUsage();
	exit(0);
    } elsif("$arg" eq "--out" || "$arg" eq "-o") {
	$out_dir = shift @ARGV;
    } elsif("$arg" eq "--gen" || "$arg" eq "-g") {
	$gen = shift @ARGV;
    } elsif("$arg" eq "--in" || "$arg" eq "-i") {
	my $infile = shift @ARGV;
        open(F, "<$infile") || die "Couldn't open file $infile";
        @makedry = <F>;
        close(F);
    }
}
 
# NOT using File::Spec->rel2abs($path, $base) here, as
# it fails badly for me in the msysgit environment
$git_dir = File::Spec->rel2abs($git_dir);
$out_dir = File::Spec->rel2abs($out_dir);
my $rel_dir = makeOutRel2Git($git_dir, $out_dir);
 
# Print some information so the user feels informed
print << "EOM";
-----
Generator: $gen
Git dir:   $git_dir
Out dir:   $out_dir
-----
Running GNU Make to figure out build structure...
EOM
 
# Pipe a make --dry-run into a variable, if not already loaded from file
@makedry = `cd $git_dir && make -n MSVC=1 V=1 2>/dev/null` if !@makedry;
 
# Parse the make output into usable info
parseMakeOutput();
 
# Finally, ask the generator to start generating..
Generators::generate($gen, $git_dir, $out_dir, $rel_dir, %build_structure);
 
# main flow ends here
# -------------------------------------------------------------------------------------------------
 
 
# 1) path: /foo/bar/baz        2) path: /foo/bar/baz   3) path: /foo/bar/baz
#    base: /foo/bar/baz/temp      base: /foo/bar          base: /tmp
#    rel:  ..                     rel:  baz               rel:  ../foo/bar/baz
sub makeOutRel2Git
{
    my ($path, $base) = @_;
    my $rel;
    if ("$path" eq "$base") {
        return ".";
    } elsif ($base =~ /^$path/) {
        # case 1
        my $tmp = $base;
        $tmp =~ s/^$path//;
        foreach (split('/', $tmp)) {
            $rel .= "../" if ("$_" ne "");
        }
    } elsif ($path =~ /^$base/) {
        # case 2
        $rel = $path;
        $rel =~ s/^$base//;
        $rel = "./$rel";
    } else {
        my $tmp = $base;
        foreach (split('/', $tmp)) {
            $rel .= "../" if ("$_" ne "");
        }
        $rel .= $path;
    }
    $rel =~ s/\/\//\//g; # simplify
    $rel =~ s/\/$//;     # don't end with /
    return $rel;
}
 
sub parseMakeOutput
{
    print "Parsing GNU Make output to figure out build structure...\n";
    my $line = 0;
    while (my $text = shift @makedry) {
        my $ate_next;
        do {
            $ate_next = 0;
            $line++;
            chomp $text;
            chop $text if ($text =~ /\r$/);
            if ($text =~ /\\$/) {
                $text =~ s/\\$//;
                $text .= shift @makedry;
                $ate_next = 1;
            }
        } while($ate_next);
 
        if ($text =~ /^test /) {
            # options to test (eg -o) may be mistaken for linker options
            next;
        }
 
        if ($text =~ /^(mkdir|msgfmt) /) {
            # options to the Portable Object translations
            # the line "mkdir ... && msgfmt ..." contains no linker options
            next;
        }
 
        if($text =~ / -c /) {
            # compilation
            handleCompileLine($text, $line);
 
        } elsif ($text =~ / -o /) {
            # linking executable
            handleLinkLine($text, $line);
 
        } elsif ($text =~ /\.o / && $text =~ /\.a /) {
            # libifying
            handleLibLine($text, $line);
#
#        } elsif ($text =~ /^cp /) {
#            # copy file around
#
#        } elsif ($text =~ /^rm -f /) {
#            # shell command
#
#        } elsif ($text =~ /^make[ \[]/) {
#            # make output
#
#        } elsif ($text =~ /^echo /) {
#            # echo to file
#
#        } elsif ($text =~ /^if /) {
#            # shell conditional
#
#        } elsif ($text =~ /^tclsh /) {
#            # translation stuff
#
#        } elsif ($text =~ /^umask /) {
#            # handling boilerplates
#
#        } elsif ($text =~ /\$\(\:\)/) {
#            # ignore
#
#        } elsif ($text =~ /^FLAGS=/) {
#            # flags check for dependencies
#
#        } elsif ($text =~ /^'\/usr\/bin\/perl' -MError -e/) {
#            # perl commands for copying files
#
#        } elsif ($text =~ /generate-cmdlist\.sh/) {
#            # command for generating list of commands
#
#        } elsif ($text =~ /new locations or Tcl/) {
#            # command for detecting Tcl/Tk changes
#
#        } elsif ($text =~ /mkdir -p/) {
#            # command creating path
#
#        } elsif ($text =~ /: no custom templates yet/) {
#            # whatever
#
#        } else {
#            print "Unhandled (line: $line): $text\n";
        }
    }
 
#    use Data::Dumper;
#    print "Parsed build structure:\n";
#    print Dumper(%build_structure);
}
 
# variables for the compilation part of each step
my (@defines, @incpaths, @cflags, @sources);
 
sub clearCompileStep
{
    @defines = ();
    @incpaths = ();
    @cflags = ();
    @sources = ();
}
 
sub removeDuplicates
{
    my (%dupHash, $entry);
    %dupHash = map { $_, 1 } @defines;
    @defines = keys %dupHash;
 
    %dupHash = map { $_, 1 } @incpaths;
    @incpaths = keys %dupHash;
 
    %dupHash = map { $_, 1 } @cflags;
    @cflags = keys %dupHash;
}
 
sub handleCompileLine
{
    my ($line, $lineno) = @_;
    my @parts = shellwords($line);
    my $sourcefile;
    shift(@parts); # ignore cmd
    while (my $part = shift @parts) {
        if ("$part" eq "-o") {
            # ignore object file
            shift @parts;
        } elsif ("$part" eq "-c") {
            # ignore compile flag
        } elsif ("$part" eq "-c") {
        } elsif ($part =~ /^.?-I/) {
            push(@incpaths, $part);
        } elsif ($part =~ /^.?-D/) {
            push(@defines, $part);
        } elsif ($part =~ /^-/) {
            push(@cflags, $part);
        } elsif ($part =~ /\.(c|cc|cpp)$/) {
            $sourcefile = $part;
        } else {
            die "Unhandled compiler option @ line $lineno: $part";
        }
    }
    @{$compile_options{"${sourcefile}_CFLAGS"}} = @cflags;
    @{$compile_options{"${sourcefile}_DEFINES"}} = @defines;
    @{$compile_options{"${sourcefile}_INCPATHS"}} = @incpaths;
    clearCompileStep();
}
 
sub handleLibLine
{
    my ($line, $lineno) = @_;
    my (@objfiles, @lflags, $libout, $part);
    # kill cmd and rm 'prefix'
    $line =~ s/^rm -f .* && .* rcs //;
    my @parts = shellwords($line);
    while ($part = shift @parts) {
        if ($part =~ /^-/) {
            push(@lflags, $part);
        } elsif ($part =~ /\.(o|obj)$/) {
            push(@objfiles, $part);
        } elsif ($part =~ /\.(a|lib)$/) {
            $libout = $part;
            $libout =~ s/\.a$//;
        } else {
            die "Unhandled lib option @ line $lineno: $part";
        }
    }
#    print "LibOut: '$libout'\nLFlags: @lflags\nOfiles: @objfiles\n";
#    exit(1);
    foreach (@objfiles) {
        my $sourcefile = $_;
        $sourcefile =~ s/\.o$/.c/;
        push(@sources, $sourcefile);
        push(@cflags, @{$compile_options{"${sourcefile}_CFLAGS"}});
        push(@defines, @{$compile_options{"${sourcefile}_DEFINES"}});
        push(@incpaths, @{$compile_options{"${sourcefile}_INCPATHS"}});
    }
    removeDuplicates();
 
    push(@{$build_structure{"LIBS"}}, $libout);
    @{$build_structure{"LIBS_${libout}"}} = ("_DEFINES", "_INCLUDES", "_CFLAGS", "_SOURCES",
                                             "_OBJECTS");
    @{$build_structure{"LIBS_${libout}_DEFINES"}} = @defines;
    @{$build_structure{"LIBS_${libout}_INCLUDES"}} = @incpaths;
    @{$build_structure{"LIBS_${libout}_CFLAGS"}} = @cflags;
    @{$build_structure{"LIBS_${libout}_LFLAGS"}} = @lflags;
    @{$build_structure{"LIBS_${libout}_SOURCES"}} = @sources;
    @{$build_structure{"LIBS_${libout}_OBJECTS"}} = @objfiles;
    clearCompileStep();
}
 
sub handleLinkLine
{
    my ($line, $lineno) = @_;
    my (@objfiles, @lflags, @libs, $appout, $part);
    my @parts = shellwords($line);
    shift(@parts); # ignore cmd
    while ($part = shift @parts) {
        if ($part =~ /^-IGNORE/) {
            push(@lflags, $part);
        } elsif ($part =~ /^-[GRIMDO]/) {
            # eat compiler flags
        } elsif ("$part" eq "-o") {
            $appout = shift @parts;
        } elsif ("$part" eq "-lz") {
            push(@libs, "zlib.lib");
	} elsif ("$part" eq "-lcrypto") {
            push(@libs, "libeay32.lib");
        } elsif ("$part" eq "-lssl") {
            push(@libs, "ssleay32.lib");
        } elsif ($part =~ /^-/) {
            push(@lflags, $part);
        } elsif ($part =~ /\.(a|lib)$/) {
            $part =~ s/\.a$/.lib/;
            push(@libs, $part);
        } elsif ($part eq 'invalidcontinue.obj') {
            # ignore - known to MSVC
        } elsif ($part =~ /\.o$/) {
            push(@objfiles, $part);
        } elsif ($part =~ /\.obj$/) {
            # do nothing, 'make' should not be producing .obj, only .o files
        } else {
            die "Unhandled link option @ line $lineno: $part";
        }
    }
#    print "AppOut: '$appout'\nLFlags: @lflags\nLibs  : @libs\nOfiles: @objfiles\n";
#    exit(1);
    foreach (@objfiles) {
        my $sourcefile = $_;
        $sourcefile =~ s/\.o$/.c/;
        push(@sources, $sourcefile);
        push(@cflags, @{$compile_options{"${sourcefile}_CFLAGS"}});
        push(@defines, @{$compile_options{"${sourcefile}_DEFINES"}});
        push(@incpaths, @{$compile_options{"${sourcefile}_INCPATHS"}});
    }
    removeDuplicates();
 
    removeDuplicates();
    push(@{$build_structure{"APPS"}}, $appout);
    @{$build_structure{"APPS_${appout}"}} = ("_DEFINES", "_INCLUDES", "_CFLAGS", "_LFLAGS",
                                             "_SOURCES", "_OBJECTS", "_LIBS");
    @{$build_structure{"APPS_${appout}_DEFINES"}} = @defines;
    @{$build_structure{"APPS_${appout}_INCLUDES"}} = @incpaths;
    @{$build_structure{"APPS_${appout}_CFLAGS"}} = @cflags;
    @{$build_structure{"APPS_${appout}_LFLAGS"}} = @lflags;
    @{$build_structure{"APPS_${appout}_SOURCES"}} = @sources;
    @{$build_structure{"APPS_${appout}_OBJECTS"}} = @objfiles;
    @{$build_structure{"APPS_${appout}_LIBS"}} = @libs;
    clearCompileStep();
}