* ext/io/wait: imported.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@4124 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 28 insertions, 0 deletions

diff --git a/ext/io/wait/extconf.rb b/ext/io/wait/extconf.rb
new file mode 100644
index 0000000000..0c1a870474
--- /dev/null
+++ b/ext/io/wait/extconf.rb
@@ -0,0 +1,28 @@
+require 'mkmf'
+target = "io/wait"
+unless defined?(checking_for)
+  def checking_for(msg)
+    STDOUT.print "checking for ", msg, "..."
+    STDOUT.flush
+    STDOUT.puts((r = yield) ? "yes" : "no")
+    r
+  end
+end
+unless defined?(macro_defined?)
+  def macro_defined?(macro, src, opt="")
+    try_cpp(src + <<"SRC", opt)
+#ifndef #{macro}
+# error
+#endif
+SRC
+  end
+end
+
+unless /djgpp|mswin|mingw|human/ =~ RUBY_PLATFORM
+  fionread = %w[sys/ioctl.h sys/filio.h].find do |h|
+    checking_for("FIONREAD") {macro_defined?("FIONREAD", "#include <#{h}>\n")}
+  end
+  exit 1 unless fionread
+  $defs << "-DFIONREAD_HEADER=\"<#{fionread}>\""
+  create_makefile(target)
+end