# module to create Makefile for extension modules

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# invoke like: ruby -r mkmf extconf.rb

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require 'rbconfig'

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require 'fileutils'

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require 'shellwords'

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CONFIG = Config::MAKEFILE_CONFIG

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ORIG_LIBPATH = ENV['LIB']

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CXX_EXT = %w[cc cxx cpp]

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if /mswin|bccwin|mingw|msdosdjgpp|human|os2/ !~ CONFIG['build_os']

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CXX_EXT.concat(%w[C])

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end

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SRC_EXT = %w[c m].concat(CXX_EXT)

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$static = $config_h = nil

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$default_static = $static

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unless defined? $configure_args

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$configure_args = {}

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args = CONFIG["configure_args"]

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if ENV["CONFIGURE_ARGS"]

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args << " " << ENV["CONFIGURE_ARGS"]

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end

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for arg in Shellwords::shellwords(args)

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arg, val = arg.split('=', 2)

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next unless arg

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arg.tr!('_', '-')

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if arg.sub!(/^(?!--)/, '--')

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val or next

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arg.downcase!

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end

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next if /^--(?:top|topsrc|src|cur)dir$/ =~ arg

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$configure_args[arg] = val || true

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end

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for arg in ARGV

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arg, val = arg.split('=', 2)

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next unless arg

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arg.tr!('_', '-')

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if arg.sub!(/^(?!--)/, '--')

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val or next

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arg.downcase!

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end

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$configure_args[arg] = val || true

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end

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end

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$libdir = CONFIG["libdir"]

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$rubylibdir = CONFIG["rubylibdir"]

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$archdir = CONFIG["archdir"]

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$sitedir = CONFIG["sitedir"]

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$sitelibdir = CONFIG["sitelibdir"]

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$sitearchdir = CONFIG["sitearchdir"]

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$vendordir = CONFIG["vendordir"]

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$vendorlibdir = CONFIG["vendorlibdir"]

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$vendorarchdir = CONFIG["vendorarchdir"]

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$mswin = /mswin/ =~ RUBY_PLATFORM

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$bccwin = /bccwin/ =~ RUBY_PLATFORM

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$mingw = /mingw/ =~ RUBY_PLATFORM

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$cygwin = /cygwin/ =~ RUBY_PLATFORM

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$human = /human/ =~ RUBY_PLATFORM

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$netbsd = /netbsd/ =~ RUBY_PLATFORM

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$os2 = /os2/ =~ RUBY_PLATFORM

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$beos = /beos/ =~ RUBY_PLATFORM

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$solaris = /solaris/ =~ RUBY_PLATFORM

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$dest_prefix_pattern = (File::PATH_SEPARATOR == ';' ? /\A([[:alpha:]]:)?/ : /\A/)

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# :stopdoc:

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def config_string(key, config = CONFIG)

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s = config[key] and !s.empty? and block_given? ? yield(s) : s

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end

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def dir_re(dir)

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Regexp.new('\$(?:\('+dir+'\)|\{'+dir+'\})(?:\$(?:\(target_prefix\)|\{target_prefix\}))?')

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end

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INSTALL_DIRS = [

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[dir_re('commondir'), "$(RUBYCOMMONDIR)"],

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[dir_re('sitedir'), "$(RUBYCOMMONDIR)"],

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[dir_re('vendordir'), "$(RUBYCOMMONDIR)"],

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[dir_re('rubylibdir'), "$(RUBYLIBDIR)"],

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[dir_re('archdir'), "$(RUBYARCHDIR)"],

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[dir_re('sitelibdir'), "$(RUBYLIBDIR)"],

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[dir_re('vendorlibdir'), "$(RUBYLIBDIR)"],

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[dir_re('sitearchdir'), "$(RUBYARCHDIR)"],

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[dir_re('bindir'), "$(BINDIR)"],

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[dir_re('vendorarchdir'), "$(RUBYARCHDIR)"],

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]

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def install_dirs(target_prefix = nil)

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if $extout

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dirs = [

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['BINDIR', '$(extout)/bin'],

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['RUBYCOMMONDIR', '$(extout)/common'],

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['RUBYLIBDIR', '$(RUBYCOMMONDIR)$(target_prefix)'],

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['RUBYARCHDIR', '$(extout)/$(arch)$(target_prefix)'],

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['extout', "#$extout"],

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['extout_prefix', "#$extout_prefix"],

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]

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elsif $extmk

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dirs = [

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['BINDIR', '$(bindir)'],

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['RUBYCOMMONDIR', '$(rubylibdir)'],

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['RUBYLIBDIR', '$(rubylibdir)$(target_prefix)'],

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['RUBYARCHDIR', '$(archdir)$(target_prefix)'],

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]

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elsif $configure_args.has_key?('--vendor')

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dirs = [

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['BINDIR', '$(bindir)'],

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['RUBYCOMMONDIR', '$(vendordir)$(target_prefix)'],

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['RUBYLIBDIR', '$(vendorlibdir)$(target_prefix)'],

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['RUBYARCHDIR', '$(vendorarchdir)$(target_prefix)'],

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]

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else

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dirs = [

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['BINDIR', '$(bindir)'],

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['RUBYCOMMONDIR', '$(sitedir)$(target_prefix)'],

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['RUBYLIBDIR', '$(sitelibdir)$(target_prefix)'],

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['RUBYARCHDIR', '$(sitearchdir)$(target_prefix)'],

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]

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end

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dirs << ['target_prefix', (target_prefix ? "/#{target_prefix}" : "")]

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dirs

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end

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def map_dir(dir, map = nil)

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map ||= INSTALL_DIRS

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map.inject(dir) {|dir, (orig, new)| dir.gsub(orig, new)}

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end

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topdir = File.dirname(libdir = File.dirname(__FILE__))

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extdir = File.expand_path("ext", topdir)

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$extmk = File.expand_path($0)[0, extdir.size+1] == extdir+"/"

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if not $extmk and File.exist?(($hdrdir = Config::CONFIG["archdir"]) + "/ruby.h")

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$topdir = $hdrdir

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elsif File.exist?(($hdrdir = ($top_srcdir ||= topdir)) + "/ruby.h") and

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File.exist?(($topdir ||= Config::CONFIG["topdir"]) + "/config.h")

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else

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abort "mkmf.rb can't find header files for ruby at #{$hdrdir}/ruby.h"

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end

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OUTFLAG = CONFIG['OUTFLAG']

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CPPOUTFILE = CONFIG['CPPOUTFILE']

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CONFTEST_C = "conftest.c"

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class String

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# Wraps a string in escaped quotes if it contains whitespace.

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def quote

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/\s/ =~ self ? "\"#{self}\"" : "#{self}"

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end

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# Generates a string used as cpp macro name.

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def tr_cpp

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strip.upcase.tr_s("^A-Z0-9_", "_")

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end

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end

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class Array

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# Wraps all strings in escaped quotes if they contain whitespace.

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def quote

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map {|s| s.quote}

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end

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end

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def rm_f(*files)

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FileUtils.rm_f(Dir[files.join("\0")])

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end

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# Returns time stamp of the +target+ file if it exists and is newer

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# than or equal to all of +times+.

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def modified?(target, times)

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(t = File.mtime(target)) rescue return nil

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Array === times or times = [times]

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t if times.all? {|n| n <= t}

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end

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def merge_libs(*libs)

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libs.inject([]) do |x, y|

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xy = x & y

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xn = yn = 0

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y = y.inject([]) {|ary, e| ary.last == e ? ary : ary << e}

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y.each_with_index do |v, yi|

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if xy.include?(v)

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xi = [x.index(v), xn].max()

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x[xi, 1] = y[yn..yi]

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xn, yn = xi + (yi - yn + 1), yi + 1

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end

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end

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x.concat(y[yn..-1] || [])

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end

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end

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# This is a custom logging module. It generates an mkmf.log file when you

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# run your extconf.rb script. This can be useful for debugging unexpected

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# failures.

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#

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# This module and its associated methods are meant for internal use only.

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#

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module Logging

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@log = nil

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@logfile = 'mkmf.log'

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@orgerr = $stderr.dup

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@orgout = $stdout.dup

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@postpone = 0

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@quiet = $extmk

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def self::open

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@log ||= File::open(@logfile, 'w')

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@log.sync = true

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$stderr.reopen(@log)

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$stdout.reopen(@log)

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yield

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ensure

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$stderr.reopen(@orgerr)

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$stdout.reopen(@orgout)

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end

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def self::message(*s)

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@log ||= File::open(@logfile, 'w')

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@log.sync = true

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@log.printf(*s)

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end

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def self::logfile file

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@logfile = file

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if @log and not @log.closed?

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@log.flush

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@log.close

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@log = nil

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end

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end

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def self::postpone

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tmplog = "mkmftmp#{@postpone += 1}.log"

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open do

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log, *save = @log, @logfile, @orgout, @orgerr

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@log, @logfile, @orgout, @orgerr = nil, tmplog, log, log

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begin

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log.print(open {yield})

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@log.close

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File::open(tmplog) {|t| FileUtils.copy_stream(t, log)}

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ensure

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@log, @logfile, @orgout, @orgerr = log, *save

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@postpone -= 1

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rm_f tmplog

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end

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end

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end

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class << self

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attr_accessor :quiet

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end

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end

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def xsystem command

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varpat = /\$\((\w+)\)|\$\{(\w+)\}/

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if varpat =~ command

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vars = Hash.new {|h, k| h[k] = ''; ENV[k]}

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command = command.dup

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nil while command.gsub!(varpat) {vars[$1||$2]}

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end

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Logging::open do

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puts command.quote

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system(command)

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end

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end

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def xpopen command, *mode, &block

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Logging::open do

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case mode[0]

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when nil, /^r/

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puts "#{command} |"

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else

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puts "| #{command}"

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end

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IO.popen(command, *mode, &block)

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end

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end

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def log_src(src)

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src = src.split(/^/)

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fmt = "%#{src.size.to_s.size}d: %s"

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Logging::message <<"EOM"

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checked program was:

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/* begin */

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EOM

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src.each_with_index {|line, no| Logging::message fmt, no+1, line}

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Logging::message <<"EOM"

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/* end */

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EOM

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end

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def create_tmpsrc(src)

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src = yield(src) if block_given?

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src = src.gsub(/[ \t]+$/, '').gsub(/\A\n+|^\n+$/, '').sub(/[^\n]\z/, "\\&\n")

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open(CONFTEST_C, "wb") do |cfile|

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cfile.print src

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end

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src

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end

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def try_do(src, command, &b)

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src = create_tmpsrc(src, &b)

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xsystem(command)

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ensure

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log_src(src)

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end

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def link_command(ldflags, opt="", libpath=$DEFLIBPATH|$LIBPATH)

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conf = Config::CONFIG.merge('hdrdir' => $hdrdir.quote,

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'src' => CONFTEST_C,

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'INCFLAGS' => $INCFLAGS,

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'CPPFLAGS' => $CPPFLAGS,

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'CFLAGS' => "#$CFLAGS",

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'ARCH_FLAG' => "#$ARCH_FLAG",

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'LDFLAGS' => "#$LDFLAGS #{ldflags}",

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'LIBPATH' => libpathflag(libpath),

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'LOCAL_LIBS' => "#$LOCAL_LIBS #$libs",

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'LIBS' => "#$LIBRUBYARG_STATIC #{opt} #$LIBS")

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Config::expand(TRY_LINK.dup, conf)

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end

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def cc_command(opt="")

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conf = Config::CONFIG.merge('hdrdir' => $hdrdir.quote, 'srcdir' => $srcdir.quote)

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Config::expand("$(CC) #$INCFLAGS #$CPPFLAGS #$CFLAGS #$ARCH_FLAG #{opt} -c #{CONFTEST_C}",

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conf)

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end

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def cpp_command(outfile, opt="")

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conf = Config::CONFIG.merge('hdrdir' => $hdrdir.quote, 'srcdir' => $srcdir.quote)

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Config::expand("$(CPP) #$INCFLAGS #$CPPFLAGS #$CFLAGS #{opt} #{CONFTEST_C} #{outfile}",

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conf)

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end

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def libpathflag(libpath=$DEFLIBPATH|$LIBPATH)

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libpath.map{|x|

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case x

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when "$(topdir)", /\A\./

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LIBPATHFLAG

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else

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LIBPATHFLAG+RPATHFLAG

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end % x.quote

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}.join

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end

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def try_link0(src, opt="", &b)

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try_do(src, link_command("", opt), &b)

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end

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def try_link(src, opt="", &b)

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try_link0(src, opt, &b)

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ensure

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rm_f "conftest*", "c0x32*"

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end

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def try_compile(src, opt="", &b)

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try_do(src, cc_command(opt), &b)

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ensure

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rm_f "conftest*"

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end

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def try_cpp(src, opt="", &b)

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try_do(src, cpp_command(CPPOUTFILE, opt), &b)

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ensure

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rm_f "conftest*"

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end

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def cpp_include(header)

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if header

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header = [header] unless header.kind_of? Array

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header.map {|h| "#include <#{h}>\n"}.join

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else

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""

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end

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end

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def with_cppflags(flags)

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cppflags = $CPPFLAGS

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$CPPFLAGS = flags

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ret = yield

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ensure

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$CPPFLAGS = cppflags unless ret

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end

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def with_cflags(flags)

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cflags = $CFLAGS

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$CFLAGS = flags

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ret = yield

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ensure

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$CFLAGS = cflags unless ret

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end

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def with_ldflags(flags)

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ldflags = $LDFLAGS

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$LDFLAGS = flags

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ret = yield

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ensure

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$LDFLAGS = ldflags unless ret

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end

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def try_static_assert(expr, headers = nil, opt = "", &b)

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headers = cpp_include(headers)

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try_compile(<<SRC, opt, &b)

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#{COMMON_HEADERS}

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#{headers}

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/*top*/

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int conftest_const[(#{expr}) ? 1 : -1];

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SRC

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end

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def try_constant(const, headers = nil, opt = "", &b)

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includes = cpp_include(headers)

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if CROSS_COMPILING

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if try_static_assert("#{const} > 0", headers, opt)

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# positive constant

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elsif try_static_assert("#{const} < 0", headers, opt)

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neg = true

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const = "-(#{const})"

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elsif try_static_assert("#{const} == 0", headers, opt)

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return 0

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else

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# not a constant

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return nil

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end

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upper = 1

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lower = 0

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until try_static_assert("#{const} <= #{upper}", headers, opt)

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lower = upper

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upper <<= 1

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end

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return nil unless lower

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while upper > lower + 1

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mid = (upper + lower) / 2

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if try_static_assert("#{const} > #{mid}", headers, opt)

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lower = mid

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else

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upper = mid

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end

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end

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upper = -upper if neg

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return upper

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else

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src = %{#{COMMON_HEADERS}

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#{includes}

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#include <stdio.h>

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/*top*/

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int conftest_const = (int)(#{const});

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int main() {printf("%d\\n", conftest_const); return 0;}

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}

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if try_link0(src, opt, &b)

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xpopen("./conftest") do |f|

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return Integer(f.gets)

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end

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end

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end

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nil

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end

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def try_func(func, libs, headers = nil, &b)

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headers = cpp_include(headers)

[462] Fix | Delete

try_link(<<"SRC", libs, &b) or try_link(<<"SRC", libs, &b)

[463] Fix | Delete

#{COMMON_HEADERS}

[464] Fix | Delete

#{headers}

[465] Fix | Delete

/*top*/

[466] Fix | Delete

int main() { return 0; }

[467] Fix | Delete

int t() { void ((*volatile p)()); p = (void ((*)()))#{func}; return 0; }

[468] Fix | Delete

SRC

[469] Fix | Delete

#{headers}

[470] Fix | Delete

/*top*/

[471] Fix | Delete

int main() { return 0; }

[472] Fix | Delete

int t() { #{func}(); return 0; }

[473] Fix | Delete

SRC

[474] Fix | Delete

end

[475] Fix | Delete

[476] Fix | Delete

def try_var(var, headers = nil, &b)

[477] Fix | Delete

headers = cpp_include(headers)

[478] Fix | Delete

try_compile(<<"SRC", &b)

[479] Fix | Delete

#{COMMON_HEADERS}

[480] Fix | Delete

#{headers}

[481] Fix | Delete

/*top*/

[482] Fix | Delete

int main() { return 0; }

[483] Fix | Delete

int t() { const volatile void *volatile p; p = &(&#{var})[0]; return 0; }

[484] Fix | Delete

SRC

[485] Fix | Delete

end

[486] Fix | Delete

[487] Fix | Delete

def egrep_cpp(pat, src, opt = "", &b)

[488] Fix | Delete

src = create_tmpsrc(src, &b)

[489] Fix | Delete

xpopen(cpp_command('', opt)) do |f|

[490] Fix | Delete

if Regexp === pat

[491] Fix | Delete

puts(" ruby -ne 'print if #{pat.inspect}'")

[492] Fix | Delete

f.grep(pat) {|l|

[493] Fix | Delete

puts "#{f.lineno}: #{l}"

[494] Fix | Delete

return true

[495] Fix | Delete

}

[496] Fix | Delete

false

[497] Fix | Delete

else

[498] Fix | Delete

puts(" egrep '#{pat}'")

[499] Fix | Delete