root/branches/libffado-2.0/SConstruct

Revision 1235, 19.6 kB (checked in by ppalmers, 16 years ago)

svn merge -r 1231:1234 svn+ssh://ffadosvn@ffado.org/ffado/trunk/libffado

Line 
1 #! /usr/bin/python
2 #
3 # Copyright (C) 2007-2008 Arnold Krille
4 # Copyright (C) 2007-2008 Pieter Palmers
5 # Copyright (C) 2008 Jonathan Woithe
6 #
7 # This file is part of FFADO
8 # FFADO = Free Firewire (pro-)audio drivers for linux
9 #
10 # FFADO is based upon FreeBoB.
11 #
12 # This program is free software: you can redistribute it and/or modify
13 # it under the terms of the GNU General Public License as published by
14 # the Free Software Foundation, either version 2 of the License, or
15 # (at your option) version 3 of the License.
16 #
17 # This program is distributed in the hope that it will be useful,
18 # but WITHOUT ANY WARRANTY; without even the implied warranty of
19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20 # GNU General Public License for more details.
21 #
22 # You should have received a copy of the GNU General Public License
23 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
24 #
25
26 FFADO_API_VERSION="8"
27 FFADO_VERSION="1.999.35"
28
29 import os
30 import re
31 from string import Template
32 import imp
33
34 build_dir = ARGUMENTS.get('BUILDDIR', "")
35 if build_dir:
36         build_base=build_dir+'/'
37         if not os.path.isdir( build_base ):
38                 os.makedirs( build_base )
39         print "Building into: " + build_base
40 else:
41         build_base=''
42
43 destdir = ARGUMENTS.get( 'DESTDIR', "" )
44
45 if not os.path.isdir( "cache" ):
46         os.makedirs( "cache" )
47
48 opts = Options( "cache/"+build_base+"options.cache" )
49
50 #
51 # If this is just to display a help-text for the variable used via ARGUMENTS, then its wrong...
52 opts.Add( "BUILDDIR", "Path to place the built files in", "")
53
54 opts.AddOptions(
55         BoolOption( "DEBUG", """\
56 Toggle debug-build. DEBUG means \"-g -Wall\" and more, otherwise we will use
57   \"-O2\" to optimise.""", True ),
58         BoolOption( "PROFILE", "Build with symbols and other profiling info", False ),
59         PathOption( "PREFIX", "The prefix where ffado will be installed to.", "/usr/local", PathOption.PathAccept ),
60         PathOption( "BINDIR", "Overwrite the directory where apps are installed to.", "$PREFIX/bin", PathOption.PathAccept ),
61         PathOption( "LIBDIR", "Overwrite the directory where libs are installed to.", "$PREFIX/lib", PathOption.PathAccept ),
62         PathOption( "INCLUDEDIR", "Overwrite the directory where headers are installed to.", "$PREFIX/include", PathOption.PathAccept ),
63         PathOption( "SHAREDIR", "Overwrite the directory where misc shared files are installed to.", "$PREFIX/share/libffado", PathOption.PathAccept ),
64         BoolOption( "ENABLE_BEBOB", "Enable/Disable the bebob part.", True ),
65         BoolOption( "ENABLE_FIREWORKS", "Enable/Disable the ECHO Audio FireWorks AV/C part.", True ),
66         BoolOption( "ENABLE_MOTU", "Enable/Disable the MOTU part.", True ),
67         BoolOption( "ENABLE_GENERICAVC", """\
68 Enable/Disable the the generic avc part (mainly used by apple).
69   Note that disabling this option might be overwritten by other devices needing
70   this code.""", False ),
71         BoolOption( "ENABLE_ALL", "Enable/Disable support for all devices.", False ),
72         BoolOption( "SERIALIZE_USE_EXPAT", "Use libexpat for XML serialization.", False ),
73         BoolOption( "BUILD_TESTS", """\
74 Build the tests in their directory. As some contain quite some functionality,
75   this is on by default.
76   If you just want to use ffado with jack without the tools, you can disable this.\
77 """, True ),
78     BoolOption( "BUILD_STATIC_TOOLS", "Build a statically linked version of the FFADO tools.", False ),
79     EnumOption('DIST_TARGET', 'Build target for cross compiling packagers', 'auto', allowed_values=('auto', 'i386', 'i686', 'x86_64', 'powerpc', 'powerpc64', 'none' ), ignorecase=2),
80     BoolOption( "ENABLE_OPTIMIZATIONS", "Enable optimizations and the use of processor specific extentions (MMX/SSE/...).", False ),
81
82         )
83
84 ## Load the builders in config
85 buildenv=os.environ
86 vars_to_check = [
87         'PATH',
88         'PKG_CONFIG_PATH',
89         'LD_LIBRARY_PATH',
90         'XDG_CONFIG_DIRS',
91         'XDG_DATA_DIRS',
92         'HOME',
93 ]
94 for var in vars_to_check:
95         if os.environ.has_key(var):
96                 buildenv[var]=os.environ[var]
97         else:
98                 buildenv[var]=''
99
100 env = Environment( tools=['default','scanreplace','pyuic','dbus','doxygen','pkgconfig'], toolpath=['admin'], ENV = buildenv, options=opts )
101
102 if os.environ.has_key('CC'):
103         env['CC'] = os.environ['CC']
104 if os.environ.has_key('CXX'):
105         env['CXX'] = os.environ['CXX']
106
107 Help( """
108 For building ffado you can set different options as listed below. You have to
109 specify them only once, scons will save the last value you used and re-use
110 that.
111 To really undo your settings and return to the factory defaults, remove the
112 "cache"-folder and the file ".sconsign.dblite" from this directory.
113 For example with: "rm -Rf .sconsign.dblite cache"
114
115 Note that this is a development version! Don't complain if its not working!
116 See www.ffado.org for stable releases.
117 """ )
118 Help( opts.GenerateHelpText( env ) )
119
120 # make sure the necessary dirs exist
121 if not os.path.isdir( "cache/" + build_base ):
122         os.makedirs( "cache/" + build_base )
123 if not os.path.isdir( 'cache/objects' ):
124         os.makedirs( 'cache/objects' )
125
126 CacheDir( 'cache/objects' )
127
128 opts.Save( 'cache/' + build_base + "options.cache", env )
129
130 def ConfigGuess( context ):
131         context.Message( "Trying to find the system triple: " )
132         ret = os.popen( "admin/config.guess" ).read()[:-1]
133         context.Result( ret )
134         return ret
135
136 def CheckForApp( context, app ):
137         context.Message( "Checking whether '" + app + "' executes " )
138         ret = context.TryAction( app )
139         context.Result( ret[0] )
140         return ret[0]
141
142 def CheckForPyModule( context, module ):
143         context.Message( "Checking for the python module '" + module + "' " )
144         ret = True
145         try:
146                 imp.find_module( module )
147         except ImportError:
148                 ret = False
149         context.Result( ret )
150         return ret
151
152 def CompilerCheck( context ):
153         context.Message( "Checking for a working C-compiler " )
154         ret = context.TryLink( """
155 #include <stdlib.h>
156
157 int main() {
158         printf( "Hello World!" );
159         return 0;
160 }""", '.c' )
161         context.Result( ret )
162         if ret == 0:
163                 return False;
164         context.Message( "Checking for a working C++-compiler " )
165         ret = context.TryLink( """
166 #include <iostream>
167
168 int main() {
169         std::cout << "Hello World!" << std::endl;
170         return 0;
171 }""", ".cpp" )
172         context.Result( ret )
173         return ret
174
175 tests = {
176         "ConfigGuess" : ConfigGuess,
177         "CheckForApp" : CheckForApp,
178         "CheckForPyModule": CheckForPyModule,
179         "CompilerCheck" : CompilerCheck,
180 }
181 tests.update( env['PKGCONFIG_TESTS'] )
182 tests.update( env['PYUIC_TESTS'] )
183
184 conf = Configure( env,
185         custom_tests = tests,
186         conf_dir = "cache/" + build_base,
187         log_file = "cache/" + build_base + 'config.log' )
188
189 if env['SERIALIZE_USE_EXPAT']:
190         env['SERIALIZE_USE_EXPAT']=1
191 else:
192         env['SERIALIZE_USE_EXPAT']=0
193
194 if not env.GetOption('clean'):
195 #       #
196 #       # Check if the environment can actually compile c-files by checking for a
197 #       # header shipped with gcc.
198 #       #
199 #       if not conf.CheckHeader( "stdio.h", language="C" ):
200 #               print "It seems as if stdio.h is missing. This probably means that your build environment is broken, please make sure you have a working c-compiler and libstdc installed and usable."
201 #               Exit( 1 )
202 #       #
203 #       # ... and do the same with a c++-header. Because some distributions have
204 #       # distinct packages for gcc and g++.
205 #       #
206 #       if not conf.CheckHeader( "iostream", language="C++" ):
207 #               print "It seems as if iostream is missing. This probably means that your build environment is broken, please make sure you have a working c++-compiler installed and usable."
208 #               Exit( 1 )
209
210         #
211         # Seems as if the above tests don't really work. This one should do the trick!?
212         #
213         if not conf.CompilerCheck():
214                 print "It seems as if your system isn't even able to compile any C-/C++-programs. Probably you don't have gcc and g++ installed. Compiling a package from source without a working compiler is very hard to do, please install the needed packages (Hint: on *ubuntu you need both gcc- and g++-packages installed)."
215                 Exit( 1 )
216
217         #
218         # The following checks are for headers and libs and packages we need.
219         #
220         allpresent = 1;
221         # for DBUS C++ bindings
222         allpresent &= conf.CheckHeader( "expat.h" )
223         allpresent &= conf.CheckLib( 'expat', 'XML_ExpatVersion', '#include <expat.h>' )
224        
225         allpresent &= conf.CheckForPKGConfig();
226
227         pkgs = {
228                 'libraw1394' : '1.3.0',
229                 'libavc1394' : '0.5.3',
230                 'libiec61883' : '1.1.0',
231                 'dbus-1' : '1.0',
232                 }
233         if not env['SERIALIZE_USE_EXPAT']:
234                 pkgs['libxml++-2.6'] = '2.13.0'
235
236         for pkg in pkgs:
237                 name2 = pkg.replace("+","").replace(".","").replace("-","").upper()
238                 env['%s_FLAGS' % name2] = conf.GetPKGFlags( pkg, pkgs[pkg] )
239                 if env['%s_FLAGS'%name2] == 0:
240                         allpresent &= 0
241
242         if not allpresent:
243                 print """
244 (At least) One of the dependencies is missing. I can't go on without it, please
245 install the needed packages for each of the lines saying "no".
246 (Remember to also install the *-devel packages!)
247
248 And remember to remove the cache with "rm -Rf .sconsign.dblite cache" so the
249 results above get rechecked.
250 """
251                 Exit( 1 )
252
253         # Check for C99 lrint() and lrintf() functions used to convert from
254         # float to integer more efficiently via float_cast.h.  If not
255         # present the standard slower methods will be used instead.  This
256         # might not be the best way of testing for these but it's the only
257         # way which seems to work properly.  CheckFunc() fails due to
258         # argument count problems.
259         if env.has_key( 'CFLAGS' ):
260                 oldcf = env['CFLAGS']
261         else:
262                 oldcf = ""
263         oldcf = env.Append(CFLAGS = '-std=c99')
264         if conf.CheckLibWithHeader( "m", "math.h", "c", "lrint(3.2);" ):
265                 HAVE_LRINT = 1
266         else:
267                 HAVE_LRINT = 0
268         if conf.CheckLibWithHeader( "m", "math.h", "c", "lrintf(3.2);" ):
269                 HAVE_LRINTF = 1
270         else:
271                 HAVE_LRINTF = 0
272         env['HAVE_LRINT'] = HAVE_LRINT;
273         env['HAVE_LRINTF'] = HAVE_LRINTF;
274         env.Replace(CFLAGS=oldcf)
275
276         #
277         # Optional checks follow:
278         #
279
280 if conf.CheckForApp( "which pyuic" ) and conf.CheckForPyModule( 'dbus' ) and conf.CheckForPyModule( 'qt' ):
281         env['PYUIC'] = True
282
283         if conf.CheckForApp( "xdg-desktop-menu --help" ):
284                 env['XDG_TOOLS'] = True
285         else:
286                 print """
287 I couldn't find the program 'xdg-desktop-menu'. Together with xdg-icon-resource
288 this is needed to add the fancy entry to your menu. But the mixer will be installed, you can start it by executing "ffadomixer".
289 """
290
291 else:
292         print """
293 I couldn't find all the prerequisites ('pyuic' and the python-modules 'dbus' and
294 'qt', the packages could be named like dbus-python and PyQt) to build the mixer.
295 Therefor the mixer won't get installed.
296 """
297
298 config_guess = conf.ConfigGuess()
299
300 env = conf.Finish()
301
302 if env['DEBUG']:
303         print "Doing a DEBUG build"
304         # -Werror could be added to, which would force the devs to really remove all the warnings :-)
305         env.AppendUnique( CCFLAGS=["-DDEBUG","-Wall","-g"] )
306         env.AppendUnique( CFLAGS=["-DDEBUG","-Wall","-g"] )
307 else:
308         env.AppendUnique( CCFLAGS=["-O2","-DNDEBUG"] )
309         env.AppendUnique( CFLAGS=["-O2","-DNDEBUG"] )
310
311 if env['PROFILE']:
312         print "Doing a PROFILE build"
313         # -Werror could be added to, which would force the devs to really remove all the warnings :-)
314         env.AppendUnique( CCFLAGS=["-Wall","-g"] )
315         env.AppendUnique( CFLAGS=["-Wall","-g"] )
316
317
318 # this is required to indicate that the DBUS version we use has support
319 # for platform dependent threading init functions
320 # this is true for DBUS >= 0.96 or so. Since we require >= 1.0 it is
321 # always true
322 env.AppendUnique( CCFLAGS=["-DDBUS_HAS_THREADS_INIT_DEFAULT"] )
323
324 if env['ENABLE_ALL']:
325         env['ENABLE_BEBOB'] = True
326         env['ENABLE_FIREWORKS'] = True
327         env['ENABLE_MOTU'] = True
328
329 if env['ENABLE_BEBOB'] or env['ENABLE_FIREWORKS']:
330         env['ENABLE_GENERICAVC'] = True
331
332 env['BUILD_STATIC_LIB'] = False
333 if env['BUILD_STATIC_TOOLS']:
334     print "Building static versions of the tools..."
335     env['BUILD_STATIC_LIB'] = True
336
337 if build_base:
338         env['build_base']="#/"+build_base
339 else:
340         env['build_base']="#/"
341
342 #
343 # Uppercase variables are for usage in code, lowercase versions for usage in
344 # scons-files for installing.
345 #
346 env['BINDIR'] = Template( env['BINDIR'] ).safe_substitute( env )
347 env['LIBDIR'] = Template( env['LIBDIR'] ).safe_substitute( env )
348 env['INCLUDEDIR'] = Template( env['INCLUDEDIR'] ).safe_substitute( env )
349 env['SHAREDIR'] = Template( env['SHAREDIR'] ).safe_substitute( env )
350 env['bindir'] = Template( destdir + env['BINDIR'] ).safe_substitute( env )
351 env['libdir'] = Template( destdir + env['LIBDIR'] ).safe_substitute( env )
352 env['includedir'] = Template( destdir + env['INCLUDEDIR'] ).safe_substitute( env )
353 env['sharedir'] = Template( destdir + env['SHAREDIR'] ).safe_substitute( env )
354
355 env.Command( target=env['sharedir'], source="", action=Mkdir( env['sharedir'] ) )
356
357 env.Alias( "install", env['libdir'] )
358 env.Alias( "install", env['includedir'] )
359 env.Alias( "install", env['sharedir'] )
360 env.Alias( "install", env['bindir'] )
361
362 #
363 # shamelessly copied from the Ardour scons file
364 #
365
366 opt_flags = []
367 env['USE_SSE'] = 0
368
369 # guess at the platform, used to define compiler flags
370
371 config_cpu = 0
372 config_arch = 1
373 config_kernel = 2
374 config_os = 3
375 config = config_guess.split ("-")
376
377 # Autodetect
378 if env['DIST_TARGET'] == 'auto':
379     if re.search ("x86_64", config[config_cpu]) != None:
380         env['DIST_TARGET'] = 'x86_64'
381     elif re.search("i[0-5]86", config[config_cpu]) != None:
382         env['DIST_TARGET'] = 'i386'
383     elif re.search("powerpc64", config[config_cpu]) != None:
384         env['DIST_TARGET'] = 'powerpc64'
385     elif re.search("powerpc", config[config_cpu]) != None:
386         env['DIST_TARGET'] = 'powerpc'
387     else:
388         env['DIST_TARGET'] = 'i686'
389     print "Detected DIST_TARGET = " + env['DIST_TARGET']
390
391 if ((re.search ("i[0-9]86", config[config_cpu]) != None) or (re.search ("x86_64", config[config_cpu]) != None) or (re.search ("powerpc", config[config_cpu]) != None)):
392    
393     build_host_supports_sse = 0
394     build_host_supports_sse2 = 0
395     build_host_supports_sse3 = 0
396
397     if config[config_kernel] == 'linux' :
398        
399         if (env['DIST_TARGET'] == 'i686') or (env['DIST_TARGET'] == 'x86_64'):
400            
401             flag_line = os.popen ("cat /proc/cpuinfo | grep '^flags'").read()[:-1]
402             x86_flags = flag_line.split (": ")[1:][0].split ()
403            
404             if "mmx" in x86_flags:
405                 opt_flags.append ("-mmmx")
406             if "sse" in x86_flags:
407                 build_host_supports_sse = 1
408             if "sse2" in x86_flags:
409                 build_host_supports_sse2 = 1
410             #if "sse3" in x86_flags:
411                 #build_host_supports_sse3 = 1
412             if "3dnow" in x86_flags:
413                 opt_flags.append ("-m3dnow")
414            
415             if config[config_cpu] == "i586":
416                 opt_flags.append ("-march=i586")
417             elif config[config_cpu] == "i686":
418                 opt_flags.append ("-march=i686")
419
420         elif (env['DIST_TARGET'] == 'powerpc') or (env['DIST_TARGET'] == 'powerpc64'):
421
422             cpu_line = os.popen ("cat /proc/cpuinfo | grep '^cpu'").read()[:-1]
423
424             ppc_type = cpu_line.split (": ")[1]
425             if re.search ("altivec", ppc_type) != None:
426                 opt_flags.append ("-maltivec")
427                 opt_flags.append ("-mabi=altivec")
428
429             ppc_type = ppc_type.split (", ")[0]
430             if re.match ("74[0145][0578]A?", ppc_type) != None:
431                 opt_flags.append ("-mcpu=7400")
432                 opt_flags.append ("-mtune=7400")
433             elif re.match ("750", ppc_type) != None:
434                 opt_flags.append ("-mcpu=750")
435                 opt_flags.append ("-mtune=750")
436             elif re.match ("PPC970", ppc_type) != None:
437                 opt_flags.append ("-mcpu=970")
438                 opt_flags.append ("-mtune=970")
439             elif re.match ("Cell Broadband Engine", ppc_type) != None:
440                 opt_flags.append ("-mcpu=cell")
441                 opt_flags.append ("-mtune=cell")
442
443     if ((env['DIST_TARGET'] == 'i686') or (env['DIST_TARGET'] == 'x86_64')) \
444        and build_host_supports_sse and env['ENABLE_OPTIMIZATIONS']:
445         opt_flags.extend (["-msse", "-mfpmath=sse"])
446         env['USE_SSE'] = 1
447
448     if ((env['DIST_TARGET'] == 'i686') or (env['DIST_TARGET'] == 'x86_64')) \
449        and build_host_supports_sse2 and env['ENABLE_OPTIMIZATIONS']:
450         opt_flags.extend (["-msse2"])
451         env['USE_SSE2'] = 1
452
453     #if ((env['DIST_TARGET'] == 'i686') or (env['DIST_TARGET'] == 'x86_64')) \
454        #and build_host_supports_sse2 and env['ENABLE_OPTIMIZATIONS']:
455         #opt_flags.extend (["-msse3"])
456         #env['USE_SSE3'] = 1
457
458     # build for 64-bit userland?
459     if env['DIST_TARGET'] == "powerpc64" or env['DIST_TARGET'] == "x86_64":
460         print "Doing a 64-bit build"
461         env.AppendUnique( CCFLAGS=["-m64"] )
462         env.AppendUnique( CFLAGS=["-m64"] )
463     else:
464         print "Doing a 32-bit build"
465         env.AppendUnique( CCFLAGS=["-m32"] )
466         env.AppendUnique( CFLAGS=["-m32"] )
467
468 # end of processor-specific section
469 if env['ENABLE_OPTIMIZATIONS']:
470     opt_flags.extend (["-fomit-frame-pointer","-ffast-math","-funroll-loops"])
471     env.AppendUnique( CCFLAGS=opt_flags )
472     env.AppendUnique( CFLAGS=opt_flags )
473     print "Doing an optimized build..."
474
475 env['REVISION'] = os.popen('svnversion .').read()[:-1]
476 # This may be as simple as '89' or as complex as '4123:4184M'.
477 # We'll just use the last bit.
478 env['REVISION'] = env['REVISION'].split(':')[-1]
479
480 if env['REVISION'] == 'exported':
481         env['REVISION'] = ''
482
483 env['FFADO_API_VERSION']=FFADO_API_VERSION
484
485 env['PACKAGE'] = "libffado"
486 env['VERSION'] = FFADO_VERSION
487 env['LIBVERSION'] = "1.0.0"
488
489 env['CONFIGDIR'] = "~/.ffado"
490 env['CACHEDIR'] = "~/.ffado"
491
492 env['REGISTRATION_URL'] = "http://ffado.org/deviceregistration/register.php?action=register"
493
494 #
495 # To have the top_srcdir as the doxygen-script is used from auto*
496 #
497 env['top_srcdir'] = env.Dir( "." ).abspath
498
499 #
500 # Start building
501 #
502 env.ScanReplace( "config.h.in" )
503 # ensure that the config.h is updated with the version
504
505 env.Depends( "config.h", "SConstruct" )
506 env.Depends( "config.h", 'cache/' + build_base + "options.cache" )
507
508 # update config.h whenever the SVN revision changes
509 env.Depends( "config.h", env.Value(env['REVISION']))
510
511 env.Depends( "libffado.pc", "SConstruct" )
512 pkgconfig = env.ScanReplace( "libffado.pc.in" )
513 env.Install( env['libdir'] + '/pkgconfig', pkgconfig )
514
515 subdirs=['external','src','libffado','tests','support','doc']
516 if build_base:
517         env.SConscript( dirs=subdirs, exports="env", build_dir=build_base+subdir )
518 else:
519         env.SConscript( dirs=subdirs, exports="env" )
520
521 # By default only src is built but all is cleaned
522 if not env.GetOption('clean'):
523     Default( 'src' )
524     Default( 'support' )
525     if env['BUILD_TESTS']:
526         Default( 'tests' )
527
528 #
529 # Deal with the DESTDIR vs. xdg-tools conflict (which is basicely that the
530 # xdg-tools can't deal with DESTDIR, so the packagers have to deal with this
531 # their own :-/
532 #
533 if len(destdir) > 0:
534         if not len( ARGUMENTS.get( "WILL_DEAL_WITH_XDG_MYSELF", "" ) ) > 0:
535                 print """
536 WARNING!
537 You are using the (packagers) option DESTDIR to install this package to a
538 different place than the real prefix. As the xdg-tools can't cope with
539 that, the .desktop-files are not installed by this build, you have to
540 deal with them your own.
541 (And you have to look into the SConstruct to learn how to disable this
542 message.)
543 """
544 else:
545
546         def CleanAction( action ):
547                 if env.GetOption( "clean" ):
548                         env.Execute( action )
549
550         if env.has_key( 'XDG_TOOLS' ) and env.has_key( 'PYUIC' ):
551                 if not env.GetOption("clean"):
552                         action = "install"
553                 else:
554                         action = "uninstall"
555                 mixerdesktopaction = env.Action( "xdg-desktop-menu %s support/xdg/ffado.org-ffadomixer.desktop" % action )
556                 mixericonaction = env.Action( "xdg-icon-resource %s --size 64 --context apps support/xdg/hi64-apps-ffado.png" % action )
557                 env.Command( "__xdgstuff1", None, mixerdesktopaction )
558                 env.Command( "__xdgstuff2", None, mixericonaction )
559                 env.Alias( "install", ["__xdgstuff1", "__xdgstuff2" ] )
560                 CleanAction( mixerdesktopaction )
561                 CleanAction( mixericonaction )
562
563 #
564 # Create a tags-file for easier emacs/vim-source-browsing
565 #  I don't know if the dependency is right...
566 #
567 findcommand = "find . \( -path \"*.h\" -o -path \"*.cpp\" -o -path \"*.c\" \) \! -path \"*.svn*\" \! -path \"./doc*\" \! -path \"./cache*\""
568 env.Command( "tags", "", findcommand + " |xargs ctags" )
569 env.Command( "TAGS", "", findcommand + " |xargs etags" )
570 env.AlwaysBuild( "tags", "TAGS" )
571 env.NoCache( "tags", "TAGS" )
572
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