reported: http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2011-04/msg01014.html

diff -ru perl-5.12.3.orig/hints/interix.sh perl-5.12.3/hints/interix.sh
--- perl-5.12.3.orig/hints/interix.sh	2011-04-27 08:34:00 +0200
+++ perl-5.12.3/hints/interix.sh	2011-04-27 08:53:46 +0200
@@ -6,14 +6,13 @@
 cc='gcc'
 cccdlflags="-DPIC $cccdlflags"
 ccdlflags='-Wl,-E'
-ccflags="-D_ALL_SOURCE $ccflags"
-d_poll="$undef"
 ld='gcc'
 lddlflags="-shared $lddlflags"
 rpathflag='-Wl,-R'
 sharpbang='#!'
 usemymalloc='false'
 usenm='false'
+firstmakefile=GNUmakefile
 
 # This script UU/usethreads.cbu will get 'called-back' by Configure 
 # after it has prompted the user for whether to use threads.