Module: MakeMakefile

# File 'lib/mkmf.rb', line 2849

def self.[]=(name, mod)
  @lang[name] = mod
end

# File 'lib/mkmf.rb', line 130

def config_string(key, config = CONFIG)
  s = config[key] and !s.empty? and block_given? ? yield(s) : s
end

# File 'lib/mkmf.rb', line 135

def dir_re(dir)
  Regexp.new('\$(?:\('dir'\)|\{'dir'\})(?:\$(?:\(target_prefix\)|\{target_prefix\}))?')
end

# File 'lib/mkmf.rb', line 248

def rm_f(*files)
  opt = (Hash === files.last ? [files.pop] : [])
  FileUtils.rm_f(Dir[*files.flatten], *opt)
end

# File 'lib/mkmf.rb', line 254

def rm_rf(*files)
  opt = (Hash === files.last ? [files.pop] : [])
  FileUtils.rm_rf(Dir[*files.flatten], *opt)
end

# File 'lib/mkmf.rb', line 1518

def have_typeof?
  return $typeof if defined?($typeof)
  $typeof = %w[__typeof__ typeof].find do |t|
    try_compile(<<SRC)
int rbcv_foo;
#{t}(rbcv_foo) rbcv_bar;
SRC
  end
end

# File 'lib/mkmf.rb', line 1016

def append_cflags(flags, *opts)
  Array(flags).each do |flag|
    if checking_for("whether #{flag} is accepted as CFLAGS") {
         try_cflags(flag, *opts)
       }
      $CFLAGS << " " << flag
    end
  end
end

# File 'lib/mkmf.rb', line 651

def append_cppflags(flags, *opts)
  Array(flags).each do |flag|
    if checking_for("whether #{flag} is accepted as CPPFLAGS") {
         try_cppflags(flag, *opts)
       }
      $CPPFLAGS << " " << flag
    end
  end
end

# File 'lib/mkmf.rb', line 686

def append_ldflags(flags, *opts)
  Array(flags).each do |flag|
    if checking_for("whether #{flag} is accepted as LDFLAGS") {
         try_ldflags(flag, *opts)
       }
      $LDFLAGS << " " << flag
    end
  end
end

# File 'lib/mkmf.rb', line 957

def append_library(libs, lib) # :no-doc:
  format(LIBARG, lib) + " " + libs
end

# File 'lib/mkmf.rb', line 1644

def arg_config(config, default=nil, &block)
  $arg_config << [config, default]
  defaults = []
  if default
    defaults << default
  elsif !block
    defaults << nil
  end
  $configure_args.fetch(config.tr('_', '-'), *defaults, &block)
end

# File 'lib/mkmf.rb', line 522

def cc_command(opt="")
  conf = cc_config(opt)
  RbConfig::expand("$(CC) #$INCFLAGS #$CPPFLAGS #$CFLAGS #$ARCH_FLAG #{opt} -c #{CONFTEST_C}",
                   conf)
end

# File 'lib/mkmf.rb', line 515

def cc_config(opt="")
  conf = RbConfig::CONFIG.merge('hdrdir' => $hdrdir.quote, 'srcdir' => $srcdir.quote,
                                'arch_hdrdir' => $arch_hdrdir.quote,
                                'top_srcdir' => $top_srcdir.quote)
  conf
end

# File 'lib/mkmf.rb', line 1417

def check_signedness(type, headers = nil, opts = nil, &b)
  typedef, member, prelude = typedef_expr(type, headers)
  signed = nil
  checking_for("signedness of #{type}", STRING_OR_FAILED_FORMAT) do
    signed = try_signedness(typedef, member, [prelude], opts, &b) or next nil
    $defs.push("-DSIGNEDNESS_OF_%s=%+d" % [type.tr_cpp, signed])
    signed < 0 ? "signed" : "unsigned"
  end
  signed
end

# File 'lib/mkmf.rb', line 1388

def check_sizeof(type, headers = nil, opts = "", &b)
  typedef, member, prelude = typedef_expr(type, headers)
  prelude << "#{typedef} *rbcv_ptr_;\n"
  prelude = [prelude]
  expr = "sizeof((*rbcv_ptr_)#{"." << member if member})"
  fmt = STRING_OR_FAILED_FORMAT
  checking_for checking_message("size of #{type}", headers), fmt do
    if size = try_constant(expr, prelude, opts, &b)
      $defs.push(format("-DSIZEOF_%s=%s", type.tr_cpp, size))
      size
    end
  end
end

# File 'lib/mkmf.rb', line 973

def checking_for(m, fmt = nil)
  if f = caller_locations(1, 1).first.base_label and /\A\w/ =~ f
    f += ": "
  else
    f = ""
  end
  m = "checking #{/\Acheck/ =~ f ? '' : 'for '}#{m}... "
  message "%s", m
  a = r = nil
  Logging::postpone do
    r = yield
    a = (fmt ? "#{fmt % r}" : r ? "yes" : "no")
    "#{f}#{m}-------------------- #{a}\n\n"
  end
  message "%s\n", a
  Logging::message "--------------------\n\n"
  r
end

# File 'lib/mkmf.rb', line 992

def checking_message(target, place = nil, opt = nil)
  [["in", place], ["with", opt]].inject("#{target}") do |msg, (pre, noun)|
    if noun
      [[:to_str], [:join, ","], [:to_s]].each do |meth, *args|
        if noun.respond_to?(meth)
          break noun = noun.__send__(meth, *args)
        end
      end
      unless noun.empty?
        msg << " #{pre} " unless msg.empty?
        msg << noun
      end
    end
    msg
  end
end

# File 'lib/mkmf.rb', line 1971

def configuration(srcdir)
  mk = []
  verbose = with_config('verbose') ?  "1" : (CONFIG['MKMF_VERBOSE'] || "0")
  vpath = $VPATH.dup
  CONFIG["hdrdir"] ||= $hdrdir
  mk << %{
SHELL = /bin/sh

# V=0 quiet, V=1 verbose.  other values don't work.
V = #{verbose}
V0 = $(V:0=)
Q1 = $(V:1=)
Q = $(Q1:0=@)
ECHO1 = $(V:1=@ #{CONFIG['NULLCMD']})
ECHO = $(ECHO1:0=@ echo)
NULLCMD = #{CONFIG['NULLCMD']}

#### Start of system configuration section. ####
#{"top_srcdir = " + $top_srcdir.sub(%r"\A#{Regexp.quote($topdir)}/", "$(topdir)/") if $extmk}
srcdir = #{srcdir.gsub(/\$\((srcdir)\)|\$\{(srcdir)\}/) {mkintpath(CONFIG[$1||$2]).unspace}}
topdir = #{mkintpath(topdir = $extmk ? CONFIG["topdir"] : $topdir).unspace}
hdrdir = #{(hdrdir = CONFIG["hdrdir"]) == topdir ? "$(topdir)" : mkintpath(hdrdir).unspace}
arch_hdrdir = #{mkintpath($arch_hdrdir).unspace}
PATH_SEPARATOR = #{CONFIG['PATH_SEPARATOR']}
VPATH = #{vpath.join(CONFIG['PATH_SEPARATOR'])}
}
  if $extmk
    mk << "RUBYLIB =\n""RUBYOPT = -\n"
  end
  prefix = mkintpath(CONFIG["prefix"])
  if destdir = prefix[$dest_prefix_pattern, 1]
    mk << "\nDESTDIR = #{destdir}\n"
    prefix = prefix[destdir.size..-1]
  end
  mk << "prefix = #{with_destdir(prefix).unspace}\n"
  CONFIG.each do |key, var|
    mk << "#{key} = #{with_destdir(mkintpath(var)).unspace}\n" if /.prefix$/ =~ key
  end
  CONFIG.each do |key, var|
    next if /^abs_/ =~ key
    next if /^(?:src|top(?:_src)?|build|hdr)dir$/ =~ key
    next unless /dir$/ =~ key
    mk << "#{key} = #{with_destdir(var)}\n"
  end
  if !$extmk and !$configure_args.has_key?('--ruby') and
      sep = config_string('BUILD_FILE_SEPARATOR')
    sep = ":/=#{sep}"
  else
    sep = ""
  end
  possible_command = (proc {|s| s if /top_srcdir|tooldir/ !~ s} unless $extmk)
  extconf_h = $extconf_h ? "-DRUBY_EXTCONF_H=\\\"$(RUBY_EXTCONF_H)\\\" " : $defs.join(" ") << " "
  headers = %w[
    $(hdrdir)/ruby.h
    $(hdrdir)/ruby/backward.h
    $(hdrdir)/ruby/ruby.h
    $(hdrdir)/ruby/defines.h
    $(hdrdir)/ruby/missing.h
    $(hdrdir)/ruby/intern.h
    $(hdrdir)/ruby/st.h
    $(hdrdir)/ruby/subst.h
  ]
  headers += $headers
  if RULE_SUBST
    headers.each {|h| h.sub!(/.*/, &RULE_SUBST.method(:%))}
  end
  headers << $config_h
  headers << '$(RUBY_EXTCONF_H)' if $extconf_h
  mk << %{

CC_WRAPPER = #{CONFIG['CC_WRAPPER']}
CC = #{CONFIG['CC']}
CXX = #{CONFIG['CXX']}
LIBRUBY = #{CONFIG['LIBRUBY']}
LIBRUBY_A = #{CONFIG['LIBRUBY_A']}
LIBRUBYARG_SHARED = #$LIBRUBYARG_SHARED
LIBRUBYARG_STATIC = #$LIBRUBYARG_STATIC
empty =
OUTFLAG = #{OUTFLAG}$(empty)
COUTFLAG = #{COUTFLAG}$(empty)
CSRCFLAG = #{CSRCFLAG}$(empty)

RUBY_EXTCONF_H = #{$extconf_h}
cflags   = #{CONFIG['cflags']}
cxxflags = #{CONFIG['cxxflags']}
optflags = #{CONFIG['optflags']}
debugflags = #{CONFIG['debugflags']}
warnflags = #{$warnflags}
cppflags = #{CONFIG['cppflags']}
CCDLFLAGS = #{$static ? '' : CONFIG['CCDLFLAGS']}
CFLAGS   = $(CCDLFLAGS) #$CFLAGS $(ARCH_FLAG)
INCFLAGS = -I. #$INCFLAGS
DEFS     = #{CONFIG['DEFS']}
CPPFLAGS = #{extconf_h}#{$CPPFLAGS}
CXXFLAGS = $(CCDLFLAGS) #$CXXFLAGS $(ARCH_FLAG)
ldflags  = #{$LDFLAGS}
dldflags = #{$DLDFLAGS} #{CONFIG['EXTDLDFLAGS']}
ARCH_FLAG = #{$ARCH_FLAG}
DLDFLAGS = $(ldflags) $(dldflags) $(ARCH_FLAG)
LDSHARED = #{CONFIG['LDSHARED']}
LDSHAREDXX = #{config_string('LDSHAREDXX') || '$(LDSHARED)'}
AR = #{CONFIG['AR']}
EXEEXT = #{CONFIG['EXEEXT']}

}
  CONFIG.each do |key, val|
    mk << "#{key} = #{val}\n" if /^RUBY.*NAME/ =~ key
  end
  mk << %{
arch = #{CONFIG['arch']}
sitearch = #{CONFIG['sitearch']}
ruby_version = #{RbConfig::CONFIG['ruby_version']}
ruby = #{$ruby.sub(%r[\A#{Regexp.quote(RbConfig::CONFIG['bindir'])}(?=/|\z)]) {'$(bindir)'}}
RUBY = $(ruby#{sep})
BUILTRUBY = #{if defined?($builtruby) && $builtruby
  $builtruby
else
  File.join('$(bindir)', CONFIG["RUBY_INSTALL_NAME"] + CONFIG['EXEEXT'])
end}
ruby_headers = #{headers.join(' ')}

RM = #{config_string('RM', &possible_command) || '$(RUBY) -run -e rm -- -f'}
RM_RF = #{config_string('RMALL', &possible_command) || '$(RUBY) -run -e rm -- -rf'}
RMDIRS = #{config_string('RMDIRS', &possible_command) || '$(RUBY) -run -e rmdir -- -p'}
MAKEDIRS = #{config_string('MAKEDIRS', &possible_command) || '@$(RUBY) -run -e mkdir -- -p'}
INSTALL = #{config_string('INSTALL', &possible_command) || '@$(RUBY) -run -e install -- -vp'}
INSTALL_PROG = #{config_string('INSTALL_PROG') || '$(INSTALL) -m 0755'}
INSTALL_DATA = #{config_string('INSTALL_DATA') || '$(INSTALL) -m 0644'}
COPY = #{config_string('CP', &possible_command) || '@$(RUBY) -run -e cp -- -v'}
TOUCH = exit >

#### End of system configuration section. ####

preload = #{defined?($preload) && $preload ? $preload.join(' ') : ''}
}
  mk
end

# File 'lib/mkmf.rb', line 446

def conftest_source
  CONFTEST_C
end

# File 'lib/mkmf.rb', line 1452

def convertible_int(type, headers = nil, opts = nil, &b)
  type, macname = *type
  checking_for("convertible type of #{type}", STRING_OR_FAILED_FORMAT) do
    if UNIVERSAL_INTS.include?(type)
      type
    else
      typedef, member, prelude = typedef_expr(type, headers, &b)
      if member
        prelude << "static rbcv_typedef_ rbcv_var;"
        compat = UNIVERSAL_INTS.find {|t|
          try_static_assert("sizeof(rbcv_var.#{member}) == sizeof(#{t})", [prelude], opts, &b)
        }
      else
        next unless signed = try_signedness(typedef, member, [prelude])
        u = "unsigned " if signed > 0
        prelude << "extern rbcv_typedef_ foo();"
        compat = UNIVERSAL_INTS.find {|t|
          try_compile([prelude, "extern #{u}#{t} foo();"].join("\n"), opts, :werror=>true, &b)
        }
      end
      if compat
        macname ||= type.sub(/_(?=t\z)/, '').tr_cpp
        conv = (compat == "long long" ? "LL" : compat.upcase)
        compat = "#{u}#{compat}"
        typename = type.tr_cpp
        $defs.push(format("-DSIZEOF_%s=SIZEOF_%s", typename, compat.tr_cpp))
        $defs.push(format("-DTYPEOF_%s=%s", typename, compat.quote))
        $defs.push(format("-DPRI_%s_PREFIX=PRI_%s_PREFIX", macname, conv))
        conv = (u ? "U" : "") + conv
        $defs.push(format("-D%s2NUM=%s2NUM", macname, conv))
        $defs.push(format("-DNUM2%s=NUM2%s", macname, conv))
        compat
      end
    end
  end
end

# File 'lib/mkmf.rb', line 528

def cpp_command(outfile, opt="")
  conf = cc_config(opt)
  if $universal and (arch_flag = conf['ARCH_FLAG']) and !arch_flag.empty?
    conf['ARCH_FLAG'] = arch_flag.gsub(/(?:\G|\s)-arch\s\S/, '')
  end
  RbConfig::expand("$(CPP) #$INCFLAGS #$CPPFLAGS #$CFLAGS #{opt} #{CONFTEST_C} #{outfile}",
                   conf)
end

# File 'lib/mkmf.rb', line 630

def cpp_include(header)
  if header
    header = [header] unless header.kind_of? Array
    header.map {|h| String === h ? "#include <#{h}>\n" : h}.join
  else
    ""
  end
end

# File 'lib/mkmf.rb', line 1744

def create_header(header = "extconf.h")
  message "creating %s\n", header
  sym = header.tr_cpp
  hdr = ["#ifndef #{sym}\n#define #{sym}\n"]
  for line in $defs
    case line
    when /^-D([^=]+)(?:=(.*))?/
      hdr << "#define #$1 #{$2 ? Shellwords.shellwords($2)[0].gsub(/(?=\t+)/, "\\\n") : 1}\n"
    when /^-U(.*)/
      hdr << "#undef #$1\n"
    end
  end
  hdr << "#endif\n"
  hdr = hdr.join("")
  log_src(hdr, "#{header} is")
  unless (File.read(header) == hdr rescue false)
    File.open(header, "wb") do |hfile|
      hfile.write(hdr)
    end
  end
  $extconf_h = header
end

# File 'lib/mkmf.rb', line 2272

def create_makefile(target, srcprefix = nil)
  $target = target
  libpath = $DEFLIBPATH|$LIBPATH
  message "creating Makefile\n"
  MakeMakefile.rm_f "#{CONFTEST}*"
  if CONFIG["DLEXT"] == $OBJEXT
    for lib in libs = $libs.split(' ')
      lib.sub!(/-l(.*)/, %%"lib\\1.#{$LIBEXT}"%)
    end
    $defs.push(format("-DEXTLIB='%s'", libs.join(",")))
  end

  if target.include?('/')
    target_prefix, target = File.split(target)
    target_prefix[0,0] = '/'
  else
    target_prefix = ""
  end

  srcprefix ||= "$(srcdir)/#{srcprefix}".chomp('/')
  RbConfig.expand(srcdir = srcprefix.dup)

  ext = ".#{$OBJEXT}"
  orig_srcs = Dir[File.join(srcdir, "*.{#{SRC_EXT.join(%q{,})}}")]
  if not $objs
    srcs = $srcs || orig_srcs
    $objs = []
    objs = srcs.inject(Hash.new {[]}) {|h, f|
      h.key?(o = File.basename(f, ".*") << ext) or $objs << o
      h[o] <<= f
      h
    }
    unless objs.delete_if {|b, f| f.size == 1}.empty?
      dups = objs.map {|b, f|
        "#{b[/.*\./]}{#{f.collect {|n| n[/([^.]+)\z/]}.join(',')}}"
      }
      abort "source files duplication - #{dups.join(", ")}"
    end
  else
    $objs.collect! {|o| File.basename(o, ".*") << ext} unless $OBJEXT == "o"
    srcs = $srcs || $objs.collect {|o| o.chomp(ext) << ".c"}
  end
  $srcs = srcs

  hdrs = Dir[File.join(srcdir, "*.{#{HDR_EXT.join(%q{,})}}")]

  target = nil if $objs.empty?

  if target and EXPORT_PREFIX
    if File.exist?(File.join(srcdir, target + '.def'))
      deffile = "$(srcdir)/$(TARGET).def"
      unless EXPORT_PREFIX.empty?
        makedef = %{$(RUBY) -pe "$$_.sub!(/^(?=\\w)/,'#{EXPORT_PREFIX}') unless 1../^EXPORTS$/i" #{deffile}}
      end
    else
      makedef = %{(echo EXPORTS && echo $(TARGET_ENTRY))}
    end
    if makedef
      $cleanfiles << '$(DEFFILE)'
      origdef = deffile
      deffile = "$(TARGET)-$(arch).def"
    end
  end
  origdef ||= ''

  if $extout and $INSTALLFILES
    $cleanfiles.concat($INSTALLFILES.collect {|files, dir|File.join(dir, files.delete_prefix('./'))})
    $distcleandirs.concat($INSTALLFILES.collect {|files, dir| dir})
  end

  if $extmk and $static
    $defs << "-DRUBY_EXPORT=1"
  end

  if $extmk and not $extconf_h
    create_header
  end

  libpath = libpathflag(libpath)

  dllib = target ? "$(TARGET).#{CONFIG['DLEXT']}" : ""
  staticlib = target ? "$(TARGET).#$LIBEXT" : ""
  conf = configuration(srcprefix)
  conf << "\
libpath = #{($DEFLIBPATH|$LIBPATH).join(" ")}
LIBPATH = #{libpath}
DEFFILE = #{deffile}

CLEANFILES = #{$cleanfiles.join(' ')}
DISTCLEANFILES = #{$distcleanfiles.join(' ')}
DISTCLEANDIRS = #{$distcleandirs.join(' ')}

extout = #{$extout && $extout.quote}
extout_prefix = #{$extout_prefix}
target_prefix = #{target_prefix}
LOCAL_LIBS = #{$LOCAL_LIBS}
LIBS = #{$LIBRUBYARG} #{$libs} #{$LIBS}
ORIG_SRCS = #{orig_srcs.collect(&File.method(:basename)).join(' ')}
SRCS = $(ORIG_SRCS) #{(srcs - orig_srcs).collect(&File.method(:basename)).join(' ')}
OBJS = #{$objs.join(" ")}
HDRS = #{hdrs.map{|h| '$(srcdir)/' + File.basename(h)}.join(' ')}
LOCAL_HDRS = #{$headers.join(' ')}
TARGET = #{target}
TARGET_NAME = #{target && target[/\A\w+/]}
TARGET_ENTRY = #{EXPORT_PREFIX || ''}Init_$(TARGET_NAME)
DLLIB = #{dllib}
EXTSTATIC = #{$static || ""}
STATIC_LIB = #{staticlib unless $static.nil?}
#{!$extout && defined?($installed_list) ? "INSTALLED_LIST = #{$installed_list}\n" : ""}
TIMESTAMP_DIR = #{$extout && $extmk ? '$(extout)/.timestamp' : '.'}
" #"
  # TODO: fixme
  install_dirs.each {|d| conf << ("%-14s= %s\n" % d) if /^[[:upper:]]/ =~ d[0]}
  sodir = $extout ? '$(TARGET_SO_DIR)' : '$(RUBYARCHDIR)'
  n = '$(TARGET_SO_DIR)$(TARGET)'
  cleanobjs = ["$(OBJS)"]
  if $extmk
    %w[bc i s].each {|ex| cleanobjs << "$(OBJS:.#{$OBJEXT}=.#{ex})"}
  end
  if target
    config_string('cleanobjs') {|t| cleanobjs << t.gsub(/\$\*/, "$(TARGET)#{deffile ? '-$(arch)': ''}")}
  end
  conf << "\
TARGET_SO_DIR =#{$extout ? " $(RUBYARCHDIR)/" : ''}
TARGET_SO     = $(TARGET_SO_DIR)$(DLLIB)
CLEANLIBS     = #{'$(TARGET_SO) ' if target}#{config_string('cleanlibs') {|t| t.gsub(/\$\*/) {n}}}
CLEANOBJS     = #{cleanobjs.join(' ')} *.bak
TARGET_SO_DIR_TIMESTAMP = #{timestamp_file(sodir, target_prefix)}
" #"

  conf = yield(conf) if block_given?
  mfile = File.open("Makefile", "wb")
  mfile.puts(conf)
  mfile.print "
all:    #{$extout ? "install" : target ? "$(DLLIB)" : "Makefile"}
static: #{$extmk && !$static ? "all" : "$(STATIC_LIB)#{$extout ? " install-rb" : ""}"}
.PHONY: all install static install-so install-rb
.PHONY: clean clean-so clean-static clean-rb
" #"
  mfile.print CLEANINGS
  fsep = config_string('BUILD_FILE_SEPARATOR') {|s| s unless s == "/"}
  if fsep
    sep = ":/=#{fsep}"
    fseprepl = proc {|s|
      s = s.gsub("/", fsep)
      s = s.gsub(/(\$\(\w+)(\))/) {$1sep$2}
      s.gsub(/(\$\{\w+)(\})/) {$1sep$2}
    }
    rsep = ":#{fsep}=/"
  else
    fseprepl = proc {|s| s}
    sep = ""
    rsep = ""
  end
  dirs = []
  mfile.print "install: install-so install-rb\n\n"
  dir = sodir.dup
  mfile.print("install-so: ")
  if target
    f = "$(DLLIB)"
    dest = "$(TARGET_SO)"
    stamp = '$(TARGET_SO_DIR_TIMESTAMP)'
    if $extout
      mfile.puts dest
      mfile.print "clean-so::\n"
      mfile.print "\t-$(Q)$(RM) #{fseprepl[dest]} #{fseprepl[stamp]}\n"
      mfile.print "\t-$(Q)$(RMDIRS) #{fseprepl[dir]}#{$ignore_error}\n"
    else
      mfile.print "#{f} #{stamp}\n"
      mfile.print "\t$(INSTALL_PROG) #{fseprepl[f]} #{dir}\n"
      if defined?($installed_list)
        mfile.print "\t@echo #{dir}/#{File.basename(f)}>>$(INSTALLED_LIST)\n"
      end
    end
    mfile.print "clean-static::\n"
    mfile.print "\t-$(Q)$(RM) $(STATIC_LIB)\n"
  else
    mfile.puts "Makefile"
  end
  mfile.print("install-rb: pre-install-rb do-install-rb install-rb-default\n")
  mfile.print("install-rb-default: pre-install-rb-default do-install-rb-default\n")
  mfile.print("pre-install-rb: Makefile\n")
  mfile.print("pre-install-rb-default: Makefile\n")
  mfile.print("do-install-rb:\n")
  mfile.print("do-install-rb-default:\n")
  for sfx, i in [["-default", [["lib/**/*.rb", "$(RUBYLIBDIR)", "lib"]]], ["", $INSTALLFILES]]
    files = install_files(mfile, i, nil, srcprefix) or next
    for dir, *files in files
      unless dirs.include?(dir)
        dirs << dir
        mfile.print "pre-install-rb#{sfx}: #{timestamp_file(dir, target_prefix)}\n"
      end
      for f in files
        dest = "#{dir}/#{File.basename(f)}"
        mfile.print("do-install-rb#{sfx}: #{dest}\n")
        mfile.print("#{dest}: #{f} #{timestamp_file(dir, target_prefix)}\n")
        mfile.print("\t$(Q) $(#{$extout ? 'COPY' : 'INSTALL_DATA'}) #{f} $(@D)\n")
        if defined?($installed_list) and !$extout
          mfile.print("\t@echo #{dest}>>$(INSTALLED_LIST)\n")
        end
        if $extout
          mfile.print("clean-rb#{sfx}::\n")
          mfile.print("\t-$(Q)$(RM) #{fseprepl[dest]}\n")
        end
      end
    end
    mfile.print "pre-install-rb#{sfx}:\n"
    if files.empty?
      mfile.print("\t@$(NULLCMD)\n")
    else
      q = "$(MAKE) -q do-install-rb#{sfx}"
      if $nmake
        mfile.print "!if \"$(Q)\" == \"@\"\n\t@#{q} || \\\n!endif\n\t"
      else
        mfile.print "\t$(Q1:0=@#{q} || )"
      end
      mfile.print "$(ECHO1:0=echo) installing#{sfx.sub(/^-/, " ")} #{target} libraries\n"
    end
    if $extout
      dirs.uniq!
      unless dirs.empty?
        mfile.print("clean-rb#{sfx}::\n")
        for dir in dirs.sort_by {|d| -d.count('/')}
          stamp = timestamp_file(dir, target_prefix)
          mfile.print("\t-$(Q)$(RM) #{fseprepl[stamp]}\n")
          mfile.print("\t-$(Q)$(RMDIRS) #{fseprepl[dir]}#{$ignore_error}\n")
        end
      end
    end
  end
  if target and !dirs.include?(sodir)
    mfile.print "$(TARGET_SO_DIR_TIMESTAMP):\n\t$(Q) $(MAKEDIRS) $(@D) #{sodir}\n\t$(Q) $(TOUCH) $@\n"
  end
  dirs.each do |d|
    t = timestamp_file(d, target_prefix)
    mfile.print "#{t}:\n\t$(Q) $(MAKEDIRS) $(@D) #{d}\n\t$(Q) $(TOUCH) $@\n"
  end

  mfile.print <<-SITEINSTALL

site-install: site-install-so site-install-rb
site-install-so: install-so
site-install-rb: install-rb

  SITEINSTALL

  return unless target

  mfile.print ".SUFFIXES: .#{(SRC_EXT + [$OBJEXT, $ASMEXT]).compact.join(' .')}\n"
  mfile.print "\n"

  compile_command = "\n\t$(ECHO) compiling $(<#{rsep})\n\t$(Q) %s\n\n"
  command = compile_command % COMPILE_CXX
  asm_command = compile_command.sub(/compiling/, 'translating') % ASSEMBLE_CXX
  CXX_EXT.each do |e|
    each_compile_rules do |rule|
      mfile.printf(rule, e, $OBJEXT)
      mfile.print(command)
      mfile.printf(rule, e, $ASMEXT)
      mfile.print(asm_command)
    end
  end
  command = compile_command % COMPILE_C
  asm_command = compile_command.sub(/compiling/, 'translating') % ASSEMBLE_C
  C_EXT.each do |e|
    each_compile_rules do |rule|
      mfile.printf(rule, e, $OBJEXT)
      mfile.print(command)
      mfile.printf(rule, e, $ASMEXT)
      mfile.print(asm_command)
    end
  end

  mfile.print "$(TARGET_SO): "
  mfile.print "$(DEFFILE) " if makedef
  mfile.print "$(OBJS) Makefile"
  mfile.print " $(TARGET_SO_DIR_TIMESTAMP)" if $extout
  mfile.print "\n"
  mfile.print "\t$(ECHO) linking shared-object #{target_prefix.sub(/\A\/(.*)/, '\1/')}$(DLLIB)\n"
  mfile.print "\t-$(Q)$(RM) $(@#{sep})\n"
  link_so = LINK_SO.gsub(/^/, "\t$(Q) ")
  if srcs.any?(&%r"\.(?:#{CXX_EXT.join('|')})\z".method(:===))
    link_so = link_so.sub(/\bLDSHARED\b/, '\&XX')
  end
  mfile.print link_so, "\n\n"
  unless $static.nil?
    mfile.print "$(STATIC_LIB): $(OBJS)\n\t-$(Q)$(RM) $(@#{sep})\n\t"
    mfile.print "$(ECHO) linking static-library $(@#{rsep})\n\t$(Q) "
    mfile.print "$(AR) #{config_string('ARFLAGS') || 'cru '}$@ $(OBJS)"
    config_string('RANLIB') do |ranlib|
      mfile.print "\n\t-$(Q)#{ranlib} $(@)#{$ignore_error}"
    end
  end
  mfile.print "\n\n"
  if makedef
    mfile.print "$(DEFFILE): #{origdef}\n"
    mfile.print "\t$(ECHO) generating $(@#{rsep})\n"
    mfile.print "\t$(Q) #{makedef} > $@\n\n"
  end

  depend = File.join(srcdir, "depend")
  if File.exist?(depend)
    mfile.print("###\n", *depend_rules(File.read(depend)))
  else
    mfile.print "$(OBJS): $(HDRS) $(ruby_headers)\n"
  end

  $makefile_created = true
ensure
  mfile.close if mfile
end

# File 'lib/mkmf.rb', line 450

def create_tmpsrc(src)
  src = "#{COMMON_HEADERS}\n#{src}"
  src = yield(src) if block_given?
  src.gsub!(/[ \t]+$/, '')
  src.gsub!(/\A\n|^\n$/, '')
  src.sub!(/[^\n]\z/, "\\&\n")
  count = 0
  begin
    File.open(conftest_source, "wb") do |cfile|
      cfile.print src
    end
  rescue Errno::EACCES
    if (count += 1) < 5
      sleep 0.2
      retry
    end
  end
  src
end

# File 'lib/mkmf.rb', line 2157

def depend_rules(depend)
  suffixes = []
  depout = []
  cont = implicit = nil
  impconv = proc do
    each_compile_rules {|rule| depout << (rule % implicit[0]) << implicit[1]}
    implicit = nil
  end
  ruleconv = proc do |line|
    if implicit
      if /\A\t/ =~ line
        implicit[1] << line
        next
      else
        impconv[]
      end
    end
    if m = /\A\.(\w)\.(\w)(?:\s*:)/.match(line)
      suffixes << m[1] << m[2]
      implicit = [[m[1], m[2]], [m.post_match]]
      next
    elsif RULE_SUBST and /\A(?!\s*\w+\s*=)[$\w][^#]*:/ =~ line
      line.sub!(/\s*\#.*$/, '')
      comment = $&
      line.gsub!(%r"(\s)(?!\.)([^$(){}=:\s\\,])(?=\s|\z)") {$1 + RULE_SUBST % $2}
      line = line.chomp + comment + "\n" if comment
    end
    depout << line
  end
  depend.each_line do |line|
    line.gsub!(/\.o\b/, ".#{$OBJEXT}")
    line.gsub!(/\{\$\(VPATH\)\}/, "") unless $nmake
    line.gsub!(/\$\((?:hdr|top)dir\)\/config.h/, $config_h)
    if $nmake && /\A\s*\$\(RM|COPY\)/ =~ line
      line.gsub!(%r"[-\w\./]{2,}"){$&.tr("/", "\\")}
      line.gsub!(/(\$\((?!RM|COPY)[^:)]+)(?=\))/, '\1:/=\\')
    end
    if /(?:^|[^\\])(?:\\\\)*\\$/ =~ line
      (cont ||= []) << line
      next
    elsif cont
      line = (cont << line).join
      cont = nil
    end
    ruleconv.call(line)
  end
  if cont
    ruleconv.call(cont.join)
  elsif implicit
    impconv.call
  end
  unless suffixes.empty?
    depout.unshift(".SUFFIXES: ." + suffixes.uniq.join(" .") + "\n\n")
  end
  if $extconf_h
    depout.unshift("$(OBJS): $(RUBY_EXTCONF_H)\n\n")
    depout.unshift("$(OBJS): $(hdrdir)/ruby/win32.h\n\n") if $mswin or $mingw
  end
  depout.flatten!
  depout
end

# File 'lib/mkmf.rb', line 1794

def dir_config(target, idefault=nil, ldefault=nil)
  key = [target, idefault, ldefault].compact.join("\0")
  if conf = $config_dirs[key]
    return conf
  end

  if dir = with_config(target + "-dir", (idefault unless ldefault))
    defaults = Array === dir ? dir : dir.split(File::PATH_SEPARATOR)
    idefault = ldefault = nil
  end

  idir = with_config(target + "-include", idefault)
  if conf = $arg_config.assoc("--with-#{target}-include")
    conf[1] ||= "${#{target}-dir}/include"
  end
  ldir = with_config(target + "-lib", ldefault)
  if conf = $arg_config.assoc("--with-#{target}-lib")
    conf[1] ||= "${#{target}-dir}/#{_libdir_basename}"
  end

  idirs = idir ? Array === idir ? idir.dup : idir.split(File::PATH_SEPARATOR) : []
  if defaults
    idirs.concat(defaults.collect {|d| d + "/include"})
    idir = ([idir] + idirs).compact.join(File::PATH_SEPARATOR)
  end
  unless idirs.empty?
    idirs.collect! {|d| "-I" + d}
    idirs -= Shellwords.shellwords($CPPFLAGS)
    unless idirs.empty?
      $CPPFLAGS = (idirs.quote << $CPPFLAGS).join(" ")
    end
  end

  ldirs = ldir ? Array === ldir ? ldir.dup : ldir.split(File::PATH_SEPARATOR) : []
  if defaults
    ldirs.concat(defaults.collect {|d| "#{d}/#{_libdir_basename}"})
    ldir = ([ldir] + ldirs).compact.join(File::PATH_SEPARATOR)
  end
  $LIBPATH = ldirs | $LIBPATH

  $config_dirs[key] = [idir, ldir]
end

# File 'lib/mkmf.rb', line 2126

def dummy_makefile(srcdir)
  configuration(srcdir) << <<RULES << CLEANINGS
CLEANFILES = #{$cleanfiles.join(' ')}
DISTCLEANFILES = #{$distcleanfiles.join(' ')}

all install static install-so install-rb: Makefile
	@$(NULLCMD)
.PHONY: all install static install-so install-rb
.PHONY: clean clean-so clean-static clean-rb

RULES
end

# File 'lib/mkmf.rb', line 2139

def each_compile_rules # :nodoc:
  vpath_splat = /\$\(\*VPATH\*\)/
  COMPILE_RULES.each do |rule|
    if vpath_splat =~ rule
      $VPATH.each do |path|
        yield rule.sub(vpath_splat) {path}
      end
    else
      yield rule
    end
  end
end

# File 'lib/mkmf.rb', line 843

def egrep_cpp(pat, src, opt = "", &b)
  src = create_tmpsrc(src, &b)
  xpopen(cpp_command('', opt)) do |f|
    if Regexp === pat
      puts("    ruby -ne 'print if #{pat.inspect}'")
      f.grep(pat) {|l|
        puts "#{f.lineno}: #{l}"
        return true
      }
      false
    else
      puts("    egrep '#{pat}'")
      begin
        stdin = $stdin.dup
        $stdin.reopen(f)
        system("egrep", pat)
      ensure
        $stdin.reopen(stdin)
      end
    end
  end
ensure
  MakeMakefile.rm_f "#{CONFTEST}*"
  log_src(src)
end

# File 'lib/mkmf.rb', line 1706

def enable_config(config, default=nil)
  if arg_config("--enable-"+config)
    true
  elsif arg_config("--disable-"+config)
    false
  elsif block_given?
    yield(config, default)
  else
    return default
  end
end

# File 'lib/mkmf.rb', line 396

def env_quote(envs)
  envs.map {|e, v| "#{e}=#{v.quote}"}
end

# File 'lib/mkmf.rb', line 371

def expand_command(commands, envs = libpath_env)
  varpat = /\$\((\w)\)|\$\{(\w)\}/
  vars = nil
  expand = proc do |command|
    case command
    when Array
      command.map(&expand)
    when String
      if varpat =~ command
        vars ||= Hash.new {|h, k| h[k] = ENV[k]}
        command = command.dup
        nil while command.gsub!(varpat) {vars[$1||$2]}
      end
      command
    else
      command
    end
  end
  if Array === commands
    env, *commands = commands if Hash === commands.first
    envs.merge!(env) if env
  end
  return envs, expand[commands]
end

# File 'lib/mkmf.rb', line 1636

def find_executable(bin, path = nil)
  checking_for checking_message(bin, path) do
    find_executable0(bin, path)
  end
end

# File 'lib/mkmf.rb', line 1591

def find_executable0(bin, path = nil)
  executable_file = proc do |name|
    begin
      stat = File.stat(name)
    rescue SystemCallError
    else
      next name if stat.file? and stat.executable?
    end
  end

  exts = config_string('EXECUTABLE_EXTS') {|s| s.split} || config_string('EXEEXT') {|s| [s]}
  if File.expand_path(bin) == bin
    return bin if executable_file.call(bin)
    if exts
      exts.each {|ext| executable_file.call(file = bin + ext) and return file}
    end
    return nil
  end
  if path ||= ENV['PATH']
    path = path.split(File::PATH_SEPARATOR)
  else
    path = %w[/usr/local/bin /usr/ucb /usr/bin /bin]
  end
  file = nil
  path.each do |dir|
    dir.sub!(/\A"(.*)"\z/m, '\1') if $mswin or $mingw
    return file if executable_file.call(file = File.join(dir, bin))
    if exts
      exts.each {|ext| executable_file.call(ext = file + ext) and return ext}
    end
  end
  nil
end