1import sys, os.path
2
3def rsplit(toSplit, sub, max=-1):
4    """ str.rsplit seems to have been introduced in 2.4 :( """
5    l = []
6    i = 0
7    while i != max:
8        try: idx = toSplit.rindex(sub)
9        except ValueError: break
10
11        toSplit, splitOff = toSplit[:idx], toSplit[idx + len(sub):]
12        l.insert(0, splitOff)
13        i += 1
14
15    l.insert(0, toSplit)
16    return l
17
18sconsDir = os.path.join("build", "scons")
19SConscript(os.path.join(sconsDir, "SConscript_common"))
20Import("Platform", "Posix", "ApiVer")
21
22# SConscript_opts exports PortAudio options
23optsDict = SConscript(os.path.join(sconsDir, "SConscript_opts"))
24optionsCache = os.path.join(sconsDir, "options.cache")   # Save options between runs in this cache
25options = Options(optionsCache, args=ARGUMENTS)
26for k in ("Installation Dirs", "Build Targets", "Host APIs", "Build Parameters", "Bindings"):
27    options.AddOptions(*optsDict[k])
28# Propagate options into environment
29env = Environment(options=options)
30# Save options for next run
31options.Save(optionsCache, env)
32# Generate help text for options
33env.Help(options.GenerateHelpText(env))
34
35buildDir = os.path.join("#", sconsDir, env["PLATFORM"])
36
37# Determine parameters to build tools
38if Platform in Posix:
39    threadCFlags = ''
40    if Platform != 'darwin':
41        threadCFlags = "-pthread "
42    baseLinkFlags = threadCFlags
43    baseCxxFlags = baseCFlags = "-Wall -pedantic -pipe " + threadCFlags
44    debugCxxFlags = debugCFlags = "-g"
45    optCxxFlags = optCFlags  = "-O2"
46env.Append(CCFLAGS = baseCFlags)
47env.Append(CXXFLAGS = baseCxxFlags)
48env.Append(LINKFLAGS = baseLinkFlags)
49if env["enableDebug"]:
50    env.AppendUnique(CCFLAGS=debugCFlags.split())
51    env.AppendUnique(CXXFLAGS=debugCxxFlags.split())
52if env["enableOptimize"]:
53    env.AppendUnique(CCFLAGS=optCFlags.split())
54    env.AppendUnique(CXXFLAGS=optCxxFlags.split())
55if not env["enableAsserts"]:
56    env.AppendUnique(CPPDEFINES=["-DNDEBUG"])
57if env["customCFlags"]:
58    env.Append(CCFLAGS=Split(env["customCFlags"]))
59if env["customCxxFlags"]:
60    env.Append(CXXFLAGS=Split(env["customCxxFlags"]))
61if env["customLinkFlags"]:
62    env.Append(LINKFLAGS=Split(env["customLinkFlags"]))
63
64env.Append(CPPPATH=[os.path.join("#", "include"), "common"])
65
66# Store all signatures in one file, otherwise .sconsign files will get installed along with our own files
67env.SConsignFile(os.path.join(sconsDir, ".sconsign"))
68
69env.SConscriptChdir(False)
70sources, sharedLib, staticLib, tests, portEnv, hostApis = env.SConscript(os.path.join("src", "SConscript"),
71        build_dir=buildDir, duplicate=False, exports=["env"])
72
73if Platform in Posix:
74    prefix = env["prefix"]
75    includeDir = os.path.join(prefix, "include")
76    libDir = os.path.join(prefix, "lib")
77    env.Alias("install", includeDir)
78    env.Alias("install", libDir)
79
80    # pkg-config
81
82    def installPkgconfig(env, target, source):
83        tgt = str(target[0])
84        src = str(source[0])
85        f = open(src)
86        try: txt = f.read()
87        finally: f.close()
88        txt = txt.replace("@prefix@", prefix)
89        txt = txt.replace("@exec_prefix@", prefix)
90        txt = txt.replace("@libdir@", libDir)
91        txt = txt.replace("@includedir@", includeDir)
92        txt = txt.replace("@LIBS@", " ".join(["-l%s" % l for l in portEnv["LIBS"]]))
93        txt = txt.replace("@THREAD_CFLAGS@", threadCFlags)
94
95        f = open(tgt, "w")
96        try: f.write(txt)
97        finally: f.close()
98
99    pkgconfigTgt = "portaudio-%d.0.pc" % int(ApiVer.split(".", 1)[0])
100    env.Command(os.path.join(libDir, "pkgconfig", pkgconfigTgt),
101        os.path.join("#", pkgconfigTgt + ".in"), installPkgconfig)
102
103# Default to None, since if the user disables all targets and no Default is set, all targets
104# are built by default
105env.Default(None)
106if env["enableTests"]:
107    env.Default(tests)
108if env["enableShared"]:
109    env.Default(sharedLib)
110
111    if Platform in Posix:
112        def symlink(env, target, source):
113            trgt = str(target[0])
114            src = str(source[0])
115
116            if os.path.islink(trgt) or os.path.exists(trgt):
117                os.remove(trgt)
118            os.symlink(os.path.basename(src), trgt)
119
120        major, minor, micro = [int(c) for c in ApiVer.split(".")]
121
122        soFile = "%s.%s" % (os.path.basename(str(sharedLib[0])), ApiVer)
123        env.InstallAs(target=os.path.join(libDir, soFile), source=sharedLib)
124        # Install symlinks
125        symTrgt = os.path.join(libDir, soFile)
126        env.Command(os.path.join(libDir, "libportaudio.so.%d.%d" % (major, minor)),
127            symTrgt, symlink)
128        symTrgt = rsplit(symTrgt, ".", 1)[0]
129        env.Command(os.path.join(libDir, "libportaudio.so.%d" % major), symTrgt, symlink)
130        symTrgt = rsplit(symTrgt, ".", 1)[0]
131        env.Command(os.path.join(libDir, "libportaudio.so"), symTrgt, symlink)
132
133if env["enableStatic"]:
134    env.Default(staticLib)
135    env.Install(libDir, staticLib)
136
137env.Install(includeDir, os.path.join("include", "portaudio.h"))
138
139
140if env["enableCxx"]:
141    env.SConscriptChdir(True)
142    cxxEnv = env.Copy()
143    sharedLibs, staticLibs, headers = env.SConscript(os.path.join("bindings", "cpp", "SConscript"),
144            exports={"env": cxxEnv, "buildDir": buildDir}, build_dir=os.path.join(buildDir, "portaudiocpp"), duplicate=False)
145    if env["enableStatic"]:
146        env.Default(staticLibs)
147        env.Install(libDir, staticLibs)
148    if env["enableShared"]:
149        env.Default(sharedLibs)
150        env.Install(libDir, sharedLibs)
151    env.Install(os.path.join(includeDir, "portaudiocpp"), headers)
152
153# Generate portaudio_config.h header with compile-time definitions of which PA
154# back-ends are available, and which includes back-end extension headers
155
156# Host-specific headers
157hostApiHeaders = {"ALSA": "pa_linux_alsa.h",
158                    "ASIO": "pa_asio.h",
159                    "COREAUDIO": "pa_mac_core.h",
160                    "JACK": "pa_jack.h",
161                    "WMME": "pa_winwmme.h",
162                    }
163
164def buildConfigH(target, source, env):
165    """builder for portaudio_config.h"""
166    global hostApiHeaders, hostApis
167    out = ""
168    for hostApi in hostApis:
169        out += "#define PA_HAVE_%s\n" % hostApi
170
171        hostApiSpecificHeader = hostApiHeaders.get(hostApi, None)
172        if hostApiSpecificHeader:
173            out += "#include \"%s\"\n" % hostApiSpecificHeader
174
175        out += "\n"
176    # Strip the last newline
177    if out and out[-1] == "\n":
178        out = out[:-1]
179
180    f = file(str(target[0]), 'w')
181    try: f.write(out)
182    finally: f.close()
183    return 0
184
185# Define the builder for the config header
186env.Append(BUILDERS={"portaudioConfig": env.Builder(
187            action=Action(buildConfigH), target_factory=env.fs.File)})
188
189confH = env.portaudioConfig(File("portaudio_config.h", "include"),
190        File("portaudio.h", "include"))
191env.Default(confH)
192env.Install(os.path.join(includeDir, "portaudio"), confH)
193
194for api in hostApis:
195    if api in hostApiHeaders:
196        env.Install(os.path.join(includeDir, "portaudio"),
197                File(hostApiHeaders[api], "include"))
198