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#!/usr/bin/env python
#
# Copyright (C) 2009 Alexander Kl"aser
#
# This piece is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# This software has been downloaded from:
# http://lear.inrialpes.fr/people/klaeser/software
#
import sys
import os
import string
import os.path
import re
HELP_USAGE = """
Usage: dep.py <link-target> <link-file> <build-dir> <root-dep-file> <include-dir> ...
"""
regSuffix = re.compile(r"\.[^.]*$")
regSrc = re.compile(r"^.*\.(c|cc|cpp)$")
regDep = re.compile(r"^.*\.d$")
regDepSplit = re.compile(r"\s*\\*\s*")
suffixes = ['.cpp', '.c', '.cc']
includeDirs = []
def parseDepFile(fileName):
# read in the dependency file
depFile = open(fileName, 'r')
depStr = depFile.read()
# discard everything up to the colon
colonPos = depStr.find(":")
assert colonPos > 0, "the dependency file '" + fileName + "' does not have the correct format"
depStr = depStr[colonPos + 1:]
# collect all included files
return regDepSplit.split(depStr)
def findSourceFile(headerFile):
# get the basename without extension
headerFile = regSuffix.sub('', headerFile)
if not headerFile:
return None
# iterate over known suffixes
for suffix in suffixes:
srcFile = headerFile + suffix
# check whether a source file corresponding to the header exists
if os.path.exists(srcFile):
return srcFile
# we add to the file path directory by directory and check whether it
# exists in one of the include directories
i = headerFile.find('/') + 1
if i != 1:
i = 0
while True:
# check whether a source file exists in one of the given include dirs
for dir in includeDirs:
# check all suffixes for source files
for suffix in suffixes:
srcFile = os.path.join(dir, headerFile[i:] + suffix)
#srcFile = os.path.abspath(srcFile)
if os.path.exists(srcFile):
return srcFile
# find next position of '/'
i = headerFile.find('/', i) + 1
if i <= 0:
break
return None
def main(argv):
global includeDirs
# check command line parameters
if len(sys.argv) < 5:
print HELP_USAGE
return
args = sys.argv
args.pop(0)
ruleTarget = args.pop(0)
linkFile = args.pop(0)
buildDir = args.pop(0)
rootDepFile = args.pop(0)
includeDirs = args
# scan all dependency files for files we need to link to
# do this recursively starting at the root dependency file
linkFiles = set()
incFiles = set()
depFileStack = set([rootDepFile])
depFilesDone = set()
while depFileStack:
# get the next dependency file to process from the stack
depFile = depFileStack.pop()
if depFile in depFilesDone:
continue
depFilesDone.add(depFile)
# iterate over all source files in the dependency file
for nextFile in parseDepFile(depFile):
newDepFile = ""
# if we have a source file, we need to link against it
if regSrc.match(nextFile):
linkFiles.add(nextFile)
newDepFile = buildDir + "/" + regSuffix.sub(".d", nextFile)
# check whether a .cpp/.c/.cc file exist
srcFile = findSourceFile(nextFile)
if srcFile != None:
linkFiles.add(srcFile)
newDepFile = buildDir + "/" + regSuffix.sub(".d", srcFile)
# if the corresponding .d file exists as parameter, add it to the stack
if newDepFile and os.path.exists(newDepFile):
depFileStack.add(newDepFile)
#
# generate all necessary rules
#
# all includes of dependency files
for i in linkFiles:
i = regSuffix.sub(".d", i)
print "-include " + buildDir + "/" + i
print
# dependencies for link file
print linkFile + ": \\"
for i in linkFiles:
i = regSuffix.sub(".d", i)
print "\t" + buildDir + "/" + i + " \\"
print
# print out all files we need to link against
print ruleTarget + ": " + linkFile + " \\"
for i in linkFiles:
i = regSuffix.sub(".o", i)
print "\t" + buildDir + "/" + i + " \\"
print
if __name__ == "__main__":
main( sys.argv )