Squashed 'waflib/' content from commit 982416b

git-subtree-dir: waflib
git-subtree-split: 982416b8a6c6728e200243e1be3ab60435c08830

1 files changed, 186 insertions, 0 deletions

diff --git a/Tools/ruby.py b/Tools/ruby.py
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+++ b/Tools/ruby.py
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+#!/usr/bin/env python
+# encoding: utf-8
+# daniel.svensson at purplescout.se 2008
+# Thomas Nagy 2016-2018 (ita)
+
+"""
+Support for Ruby extensions. A C/C++ compiler is required::
+
+	def options(opt):
+		opt.load('compiler_c ruby')
+	def configure(conf):
+		conf.load('compiler_c ruby')
+		conf.check_ruby_version((1,8,0))
+		conf.check_ruby_ext_devel()
+		conf.check_ruby_module('libxml')
+	def build(bld):
+		bld(
+			features = 'c cshlib rubyext',
+			source = 'rb_mytest.c',
+			target = 'mytest_ext',
+			install_path = '${ARCHDIR_RUBY}')
+		bld.install_files('${LIBDIR_RUBY}', 'Mytest.rb')
+"""
+
+import os
+from waflib import Errors, Options, Task, Utils
+from waflib.TaskGen import before_method, feature, extension
+from waflib.Configure import conf
+
+@feature('rubyext')
+@before_method('apply_incpaths', 'process_source', 'apply_bundle', 'apply_link')
+def init_rubyext(self):
+	"""
+	Add required variables for ruby extensions
+	"""
+	self.install_path = '${ARCHDIR_RUBY}'
+	self.uselib = self.to_list(getattr(self, 'uselib', ''))
+	if not 'RUBY' in self.uselib:
+		self.uselib.append('RUBY')
+	if not 'RUBYEXT' in self.uselib:
+		self.uselib.append('RUBYEXT')
+
+@feature('rubyext')
+@before_method('apply_link', 'propagate_uselib_vars')
+def apply_ruby_so_name(self):
+	"""
+	Strip the *lib* prefix from ruby extensions
+	"""
+	self.env.cshlib_PATTERN = self.env.cxxshlib_PATTERN = self.env.rubyext_PATTERN
+
+@conf
+def check_ruby_version(self, minver=()):
+	"""
+	Checks if ruby is installed.
+	If installed the variable RUBY will be set in environment.
+	The ruby binary can be overridden by ``--with-ruby-binary`` command-line option.
+	"""
+
+	ruby = self.find_program('ruby', var='RUBY', value=Options.options.rubybinary)
+
+	try:
+		version = self.cmd_and_log(ruby + ['-e', 'puts defined?(VERSION) ? VERSION : RUBY_VERSION']).strip()
+	except Errors.WafError:
+		self.fatal('could not determine ruby version')
+	self.env.RUBY_VERSION = version
+
+	try:
+		ver = tuple(map(int, version.split('.')))
+	except Errors.WafError:
+		self.fatal('unsupported ruby version %r' % version)
+
+	cver = ''
+	if minver:
+		cver = '> ' + '.'.join(str(x) for x in minver)
+		if ver < minver:
+			self.fatal('ruby is too old %r' % ver)
+
+	self.msg('Checking for ruby version %s' % cver, version)
+
+@conf
+def check_ruby_ext_devel(self):
+	"""
+	Check if a ruby extension can be created
+	"""
+	if not self.env.RUBY:
+		self.fatal('ruby detection is required first')
+
+	if not self.env.CC_NAME and not self.env.CXX_NAME:
+		self.fatal('load a c/c++ compiler first')
+
+	version = tuple(map(int, self.env.RUBY_VERSION.split(".")))
+
+	def read_out(cmd):
+		return Utils.to_list(self.cmd_and_log(self.env.RUBY + ['-rrbconfig', '-e', cmd]))
+
+	def read_config(key):
+		return read_out('puts RbConfig::CONFIG[%r]' % key)
+
+	cpppath = archdir = read_config('archdir')
+
+	if version >= (1, 9, 0):
+		ruby_hdrdir = read_config('rubyhdrdir')
+		cpppath += ruby_hdrdir
+		if version >= (2, 0, 0):
+			cpppath += read_config('rubyarchhdrdir')
+		cpppath += [os.path.join(ruby_hdrdir[0], read_config('arch')[0])]
+
+	self.check(header_name='ruby.h', includes=cpppath, errmsg='could not find ruby header file', link_header_test=False)
+
+	self.env.LIBPATH_RUBYEXT = read_config('libdir')
+	self.env.LIBPATH_RUBYEXT += archdir
+	self.env.INCLUDES_RUBYEXT = cpppath
+	self.env.CFLAGS_RUBYEXT = read_config('CCDLFLAGS')
+	self.env.rubyext_PATTERN = '%s.' + read_config('DLEXT')[0]
+
+	# ok this is really stupid, but the command and flags are combined.
+	# so we try to find the first argument...
+	flags = read_config('LDSHARED')
+	while flags and flags[0][0] != '-':
+		flags = flags[1:]
+
+	# we also want to strip out the deprecated ppc flags
+	if len(flags) > 1 and flags[1] == "ppc":
+		flags = flags[2:]
+
+	self.env.LINKFLAGS_RUBYEXT = flags
+	self.env.LINKFLAGS_RUBYEXT += read_config('LIBS')
+	self.env.LINKFLAGS_RUBYEXT += read_config('LIBRUBYARG_SHARED')
+
+	if Options.options.rubyarchdir:
+		self.env.ARCHDIR_RUBY = Options.options.rubyarchdir
+	else:
+		self.env.ARCHDIR_RUBY = read_config('sitearchdir')[0]
+
+	if Options.options.rubylibdir:
+		self.env.LIBDIR_RUBY = Options.options.rubylibdir
+	else:
+		self.env.LIBDIR_RUBY = read_config('sitelibdir')[0]
+
+@conf
+def check_ruby_module(self, module_name):
+	"""
+	Check if the selected ruby interpreter can require the given ruby module::
+
+		def configure(conf):
+			conf.check_ruby_module('libxml')
+
+	:param module_name: module
+	:type  module_name: string
+	"""
+	self.start_msg('Ruby module %s' % module_name)
+	try:
+		self.cmd_and_log(self.env.RUBY + ['-e', 'require \'%s\';puts 1' % module_name])
+	except Errors.WafError:
+		self.end_msg(False)
+		self.fatal('Could not find the ruby module %r' % module_name)
+	self.end_msg(True)
+
+@extension('.rb')
+def process(self, node):
+	return self.create_task('run_ruby', node)
+
+class run_ruby(Task.Task):
+	"""
+	Task to run ruby files detected by file extension .rb::
+
+		def options(opt):
+			opt.load('ruby')
+
+		def configure(ctx):
+			ctx.check_ruby_version()
+
+		def build(bld):
+			bld.env.RBFLAGS = '-e puts "hello world"'
+			bld(source='a_ruby_file.rb')
+	"""
+	run_str = '${RUBY} ${RBFLAGS} -I ${SRC[0].parent.abspath()} ${SRC}'
+
+def options(opt):
+	"""
+	Add the ``--with-ruby-archdir``, ``--with-ruby-libdir`` and ``--with-ruby-binary`` options
+	"""
+	opt.add_option('--with-ruby-archdir', type='string', dest='rubyarchdir', help='Specify directory where to install arch specific files')
+	opt.add_option('--with-ruby-libdir', type='string', dest='rubylibdir', help='Specify alternate ruby library path')
+	opt.add_option('--with-ruby-binary', type='string', dest='rubybinary', help='Specify alternate ruby binary')
+