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1#######################################################################
2# Common SCons code
3
4import os
5import os.path
6import re
7import subprocess
8import sys
9import platform as _platform
10
11import SCons.Script.SConscript
12
13
14#######################################################################
15# Defaults
16
17host_platform = _platform.system().lower()
18if host_platform.startswith('cygwin'):
19    host_platform = 'cygwin'
20# MSYS2 default platform selection.
21if host_platform.startswith('mingw'):
22    host_platform = 'windows'
23
24# Search sys.argv[] for a "platform=foo" argument since we don't have
25# an 'env' variable at this point.
26if 'platform' in SCons.Script.ARGUMENTS:
27    target_platform = SCons.Script.ARGUMENTS['platform']
28else:
29    target_platform = host_platform
30
31_machine_map = {
32    'x86': 'x86',
33    'i386': 'x86',
34    'i486': 'x86',
35    'i586': 'x86',
36    'i686': 'x86',
37    'BePC': 'x86',
38    'Intel': 'x86',
39    'ppc': 'ppc',
40    'BeBox': 'ppc',
41    'BeMac': 'ppc',
42    'AMD64': 'x86_64',
43    'x86_64': 'x86_64',
44    'sparc': 'sparc',
45    'sun4u': 'sparc',
46}
47
48
49# find host_machine value
50if 'PROCESSOR_ARCHITECTURE' in os.environ:
51    host_machine = os.environ['PROCESSOR_ARCHITECTURE']
52else:
53    host_machine = _platform.machine()
54host_machine = _machine_map.get(host_machine, 'generic')
55# MSYS2 default machine selection.
56if _platform.system().lower().startswith('mingw') and 'MSYSTEM' in os.environ:
57    if os.environ['MSYSTEM'] == 'MINGW32':
58        host_machine = 'x86'
59    if os.environ['MSYSTEM'] == 'MINGW64':
60        host_machine = 'x86_64'
61
62default_machine = host_machine
63default_toolchain = 'default'
64# MSYS2 default toolchain selection.
65if _platform.system().lower().startswith('mingw'):
66    default_toolchain = 'mingw'
67
68if target_platform == 'windows' and host_platform != 'windows':
69    default_machine = 'x86'
70    default_toolchain = 'crossmingw'
71
72
73# find default_llvm value
74if 'LLVM' in os.environ or 'LLVM_CONFIG' in os.environ:
75    default_llvm = 'yes'
76else:
77    default_llvm = 'no'
78    try:
79        if target_platform != 'windows' and \
80           subprocess.call(['llvm-config', '--version'],
81                           stdout=subprocess.PIPE) == 0:
82            default_llvm = 'yes'
83    except:
84        pass
85
86
87#######################################################################
88# Common options
89
90def AddOptions(opts):
91    try:
92        from SCons.Variables.BoolVariable import BoolVariable as BoolOption
93    except ImportError:
94        from SCons.Options.BoolOption import BoolOption
95    try:
96        from SCons.Variables.EnumVariable import EnumVariable as EnumOption
97    except ImportError:
98        from SCons.Options.EnumOption import EnumOption
99    opts.Add(EnumOption('build', 'build type', 'debug',
100                        allowed_values=('debug', 'checked', 'profile',
101                                        'release')))
102    opts.Add(BoolOption('verbose', 'verbose output', 'no'))
103    opts.Add(EnumOption('machine', 'use machine-specific assembly code',
104                        default_machine,
105                        allowed_values=('generic', 'ppc', 'x86', 'x86_64')))
106    opts.Add(EnumOption('platform', 'target platform', host_platform,
107                        allowed_values=('cygwin', 'darwin', 'freebsd', 'haiku',
108                                        'linux', 'sunos', 'windows')))
109    opts.Add(BoolOption('embedded', 'embedded build', 'no'))
110    opts.Add(BoolOption('analyze',
111                        'enable static code analysis where available', 'no'))
112    opts.Add(BoolOption('asan', 'enable Address Sanitizer', 'no'))
113    opts.Add('toolchain', 'compiler toolchain', default_toolchain)
114    opts.Add(BoolOption('llvm', 'use LLVM', default_llvm))
115    opts.Add(BoolOption('force_scons', 'Force enable scons on deprecated platforms', 'false'))
116    opts.Add(BoolOption('openmp', 'EXPERIMENTAL: compile with openmp (swrast)',
117                        'no'))
118    opts.Add(BoolOption('debug', 'DEPRECATED: debug build', 'yes'))
119    opts.Add(BoolOption('profile', 'DEPRECATED: profile build', 'no'))
120    opts.Add(BoolOption('quiet', 'DEPRECATED: profile build', 'yes'))
121    opts.Add(BoolOption('swr', 'Build OpenSWR', 'no'))
122    if host_platform == 'windows':
123        opts.Add('MSVC_VERSION', 'Microsoft Visual C/C++ version')
124        opts.Add('MSVC_USE_SCRIPT', 'Microsoft Visual C/C++ vcvarsall script', True)
125