completion: add --skip for cherry-pick and revert
[git/git.git] / contrib / buildsystems / parse.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 Cwd;
13
14 my $file = $ARGV[0];
15 die "No file provided!" if !defined $file;
16
17 my ($cflags, $target, $type, $line);
18
19 open(F, "<$file") || die "Couldn't open file $file";
20 my @data = <F>;
21 close(F);
22
23 while (my $text = shift @data) {
24 my $ate_next;
25 do {
26 $ate_next = 0;
27 $line++;
28 chomp $text;
29 chop $text if ($text =~ /\r$/);
30 if ($text =~ /\\$/) {
31 $text =~ s/\\$//;
32 $text .= shift @data;
33 $ate_next = 1;
34 }
35 } while($ate_next);
36
37 if($text =~ / -c /) {
38 # compilation
39 handleCompileLine($text, $line);
40
41 } elsif ($text =~ / -o /) {
42 # linking executable
43 handleLinkLine($text, $line);
44
45 } elsif ($text =~ /\.o / && $text =~ /\.a /) {
46 # libifying
47 handleLibLine($text, $line);
48
49 # } elsif ($text =~ /^cp /) {
50 # # copy file around
51 #
52 # } elsif ($text =~ /^rm -f /) {
53 # # shell command
54 #
55 # } elsif ($text =~ /^make[ \[]/) {
56 # # make output
57 #
58 # } elsif ($text =~ /^echo /) {
59 # # echo to file
60 #
61 # } elsif ($text =~ /^if /) {
62 # # shell conditional
63 #
64 # } elsif ($text =~ /^tclsh /) {
65 # # translation stuff
66 #
67 # } elsif ($text =~ /^umask /) {
68 # # handling boilerplates
69 #
70 # } elsif ($text =~ /\$\(\:\)/) {
71 # # ignore
72 #
73 # } elsif ($text =~ /^FLAGS=/) {
74 # # flags check for dependencies
75 #
76 # } elsif ($text =~ /^'\/usr\/bin\/perl' -MError -e/) {
77 # # perl commands for copying files
78 #
79 # } elsif ($text =~ /generate-cmdlist\.sh/) {
80 # # command for generating list of commands
81 #
82 # } elsif ($text =~ /^test / && $text =~ /|| rm -f /) {
83 # # commands removing executables, if they exist
84 #
85 # } elsif ($text =~ /new locations or Tcl/) {
86 # # command for detecting Tcl/Tk changes
87 #
88 # } elsif ($text =~ /mkdir -p/) {
89 # # command creating path
90 #
91 # } elsif ($text =~ /: no custom templates yet/) {
92 # # whatever
93
94 } else {
95 # print "Unhandled (line: $line): $text\n";
96 }
97 }
98 close(F);
99
100 # use Data::Dumper;
101 # print "Parsed build structure:\n";
102 # print Dumper(%build_structure);
103
104 # -------------------------------------------------------------------
105 # Functions under here
106 # -------------------------------------------------------------------
107 my (%build_structure, @defines, @incpaths, @cflags, @sources);
108
109 sub clearCompileStep
110 {
111 @defines = ();
112 @incpaths = ();
113 @cflags = ();
114 @sources = ();
115 }
116
117 sub removeDuplicates
118 {
119 my (%dupHash, $entry);
120 %dupHash = map { $_, 1 } @defines;
121 @defines = keys %dupHash;
122
123 %dupHash = map { $_, 1 } @incpaths;
124 @incpaths = keys %dupHash;
125
126 %dupHash = map { $_, 1 } @cflags;
127 @cflags = keys %dupHash;
128
129 %dupHash = map { $_, 1 } @sources;
130 @sources = keys %dupHash;
131 }
132
133 sub handleCompileLine
134 {
135 my ($line, $lineno) = @_;
136 my @parts = split(' ', $line);
137 shift(@parts); # ignore cmd
138 while (my $part = shift @parts) {
139 if ("$part" eq "-o") {
140 # ignore object file
141 shift @parts;
142 } elsif ("$part" eq "-c") {
143 # ignore compile flag
144 } elsif ("$part" eq "-c") {
145 } elsif ($part =~ /^.?-I/) {
146 push(@incpaths, $part);
147 } elsif ($part =~ /^.?-D/) {
148 push(@defines, $part);
149 } elsif ($part =~ /^-/) {
150 push(@cflags, $part);
151 } elsif ($part =~ /\.(c|cc|cpp)$/) {
152 push(@sources, $part);
153 } else {
154 die "Unhandled compiler option @ line $lineno: $part";
155 }
156 }
157 #print "Sources: @sources\nCFlags: @cflags\nDefine: @defines\nIncpat: @incpaths\n";
158 #exit(1);
159 }
160
161 sub handleLibLine
162 {
163 my ($line, $lineno) = @_;
164 my (@objfiles, @lflags, $libout, $part);
165 # kill cmd and rm 'prefix'
166 $line =~ s/^rm -f .* && .* rcs //;
167 my @parts = split(' ', $line);
168 while ($part = shift @parts) {
169 if ($part =~ /^-/) {
170 push(@lflags, $part);
171 } elsif ($part =~ /\.(o|obj)$/) {
172 push(@objfiles, $part);
173 } elsif ($part =~ /\.(a|lib)$/) {
174 $libout = $part;
175 } else {
176 die "Unhandled lib option @ line $lineno: $part";
177 }
178 }
179 #print "LibOut: '$libout'\nLFlags: @lflags\nOfiles: @objfiles\n";
180 #exit(1);
181 removeDuplicates();
182 push(@{$build_structure{"LIBS"}}, $libout);
183 @{$build_structure{"LIBS_${libout}"}} = ("_DEFINES", "_INCLUDES", "_CFLAGS", "_SOURCES",
184 "_OBJECTS");
185 @{$build_structure{"LIBS_${libout}_DEFINES"}} = @defines;
186 @{$build_structure{"LIBS_${libout}_INCLUDES"}} = @incpaths;
187 @{$build_structure{"LIBS_${libout}_CFLAGS"}} = @cflags;
188 @{$build_structure{"LIBS_${libout}_SOURCES"}} = @sources;
189 @{$build_structure{"LIBS_${libout}_OBJECTS"}} = @objfiles;
190 clearCompileStep();
191 }
192
193 sub handleLinkLine
194 {
195 my ($line, $lineno) = @_;
196 my (@objfiles, @lflags, @libs, $appout, $part);
197 my @parts = split(' ', $line);
198 shift(@parts); # ignore cmd
199 while ($part = shift @parts) {
200 if ($part =~ /^-[GRIDO]/) {
201 # eat compiler flags
202 } elsif ("$part" eq "-o") {
203 $appout = shift @parts;
204 } elsif ($part =~ /^-/) {
205 push(@lflags, $part);
206 } elsif ($part =~ /\.(a|lib)$/) {
207 push(@libs, $part);
208 } elsif ($part =~ /\.(o|obj)$/) {
209 push(@objfiles, $part);
210 } else {
211 die "Unhandled lib option @ line $lineno: $part";
212 }
213 }
214 #print "AppOut: '$appout'\nLFlags: @lflags\nLibs : @libs\nOfiles: @objfiles\n";
215 #exit(1);
216 removeDuplicates();
217 push(@{$build_structure{"APPS"}}, $appout);
218 @{$build_structure{"APPS_${appout}"}} = ("_DEFINES", "_INCLUDES", "_CFLAGS", "_LFLAGS",
219 "_SOURCES", "_OBJECTS", "_LIBS");
220 @{$build_structure{"APPS_${appout}_DEFINES"}} = @defines;
221 @{$build_structure{"APPS_${appout}_INCLUDES"}} = @incpaths;
222 @{$build_structure{"APPS_${appout}_CFLAGS"}} = @cflags;
223 @{$build_structure{"APPS_${appout}_LFLAGS"}} = @lflags;
224 @{$build_structure{"APPS_${appout}_SOURCES"}} = @sources;
225 @{$build_structure{"APPS_${appout}_OBJECTS"}} = @objfiles;
226 @{$build_structure{"APPS_${appout}_LIBS"}} = @libs;
227 clearCompileStep();
228 }