waf complains about missing source files, e.g.:

   could not find 'jack/*.h' in /home/adi/jack2/common

ant_glob fixes the problem

config.h is generated in build/, that's "../" at compile time.

For the sake of completeness, here's the waf error:

[122/163] cxx: common/Jackdmp.cpp -> build/common/Jackdmp.cpp.1.o
In file included from ../common/Jackdmp.cpp:35:0:
../common/JackConstants.h:24:20: fatal error: config.h: No such file or directory
compilation terminated.
Waf: Leaving directory `/home/adi/jack2/build'
Build failed
 -> task in 'jackd' failed (exit status 1):
        {task 39469904: cxx Jackdmp.cpp -> Jackdmp.cpp.1.o}
['/usr/bin/g++', '-Wall', '-I/home/adi/jack2/build/linux', '-I/home/adi/jack2/linux', '-I/home/adi/jack2/build/posix', '-I/home/adi/jack2/posix', '-I/home/adi/jack2/build/common/jack', '-I/home/adi/jack2/common/jack', '-I/home/adi/jack2/build/common', '-I/home/adi/jack2/common', '-I/home/adi/jack2/build/dbus', '-I/home/adi/jack2/dbus', '-DHAVE_CONFIG_H', '-DSERVER_SIDE', '../common/Jackdmp.cpp', '-c', '-o', 'common/Jackdmp.cpp.1.o']

waf complains about missing features in the builder, so let's add some.

For the sake of completeness, here's an example error message:

Traceback (most recent call last):
  File "/home/adi/jack2/.waf-1.6.11-30618c54883417962c38f5d395f83584/waflib/Runner.py", line 162, in start
    st=tsk.runnable_status()
  File "/home/adi/jack2/.waf-1.6.11-30618c54883417962c38f5d395f83584/waflib/Task.py", line 285, in runnable_status
    new_sig=self.signature()
  File "/home/adi/jack2/.waf-1.6.11-30618c54883417962c38f5d395f83584/waflib/Task.py", line 274, in signature
    self.sig_implicit_deps()
  File "/home/adi/jack2/.waf-1.6.11-30618c54883417962c38f5d395f83584/waflib/Task.py", line 372, in sig_implicit_deps
    (nodes,names)=self.scan()
  File "/home/adi/jack2/.waf-1.6.11-30618c54883417962c38f5d395f83584/waflib/Tools/c_preproc.py", line 594, in scan
    raise Errors.WafError('%r is missing a feature such as "c", "cxx" or "includes": '%task.generator)
WafError: bld(uselib_local='clientlib', posted=True, features=[], idx=28, uselib='RT SNDFILE', meths=['process_rule', 'process_source'], prec=defaultdict(<type 'list'>, {}), includes=['../linux', '../posix', '../common/jack', '../common'], source=[/home/adi/jack2/example-clients/capture_client.c], mappings={}, path=/home/adi/jack2/example-clients, _name='jack_rec', target='jack_rec') in /home/adi/jack2/example-clients is missing a feature such as "c", "cxx" or "includes":

Instead of rewriting all end=' ' statements, we can import the new print
function in python-2.6.0a2 or newer. Should be "old enough".

misc is no longer available, but luckily, we don't need it.

The misc module is no longer available, but we have a subst_pc builder
now. Let's use this instead.

We're in the middle of moving to git, so we don't need it atm.

conf.env no longer contains conf.defines, they are now in
conf.env.DEFINES and are only a list.

Resort to the options parser and directly use this value.

The method name has changed in recent versions of waf.

Prevents waf configure from failing if not marked as non-mandatory.

Util no longer provides the pprint method, let's use Logs.pprint
instead.

Utils.detect_platform is no longer available, so let's use the
underlying sys.platform instead. On Linux, sys.platform returns "linux2"
these days, but upstreams is considering to change it "linux" in the
future.

Automatically upgrading to python3 syntax, where possible.

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