--- IO-AIO/Makefile.PL	2005/07/31 18:14:48	1.3
+++ IO-AIO/Makefile.PL	2006/10/26 16:28:33	1.10
@@ -4,7 +4,52 @@
 
 require "autoconf.pm";
 
-autoconf::run_script();
+if ($^O =~ /win32/i or $^O =~ /mswin/) {
+
+   # configuration on windows is hardcoded - as always
+
+   die "your platform is not standards-compliant, you have to port this module first\n";#d#
+
+} else {
+
+   if ($^O =~ /freebsd/i) {
+      print <<EOF;
+
+This package seems to deadlock or otherwise misbehave under FreeBSD. As
+documentation on FreeBSD threading is sorely lacking and confusing, I'll
+just call FreeBSD broken with regards to threading.
+
+If you find out whats wrong, please tell me.
+
+Some people had luck with using OPTIMIZE=-O instead of -O2, so you might
+want to try that.
+
+EOF
+   }
+
+   autoconf::run_script()
+      and die "\nconfigure failed, check it's output above and autoconf/config.log\n\n";
+}
+
+if ($^O =~ /linux/ && $Config{usemymalloc} eq "y") {
+   print <<EOF;
+
+***
+*** WARNING:
+***
+*** Your perl uses it's own memory allocator (-Dusemymalloc=y),
+*** which is known not to be threadsafe on GNU/Linux and probably
+*** other platforms (even when not used concurrently, it trashes
+*** the data structures of the system malloc running concurrently),
+*** for perls up to 5.8.8 and possibly later versions.
+***
+*** If you are unsure wether your perl has been fixed, your system
+*** is safe for other reasons, or you experience spurious segfaults,
+*** please compile your perl with -Dusemymalloc=n.
+***
+
+EOF
+}
 
 my $mm = MM->new({
     dist         => {
@@ -15,6 +60,7 @@
     NAME         => "IO::AIO",
     VERSION_FROM => "AIO.pm",
     LIBS         => ['-lpthread -lrt', '-lpthread', '-lpthreads', ''],
+    clean        => { FILES => "autoconf/config.h autoconf/config.log autoconf/config.status" },
 });
 
 $mm->flush;