diff -rup ddrescue-1.12-rc1.orig/ddrescue.cc ddrescue-1.12-rc1/ddrescue.cc
--- ddrescue-1.12-rc1.orig/ddrescue.cc	2010-01-03 01:08:17.000000000 +0100
+++ ddrescue-1.12-rc1/ddrescue.cc	2010-03-02 21:09:58.634125000 +0100
@@ -320,8 +320,12 @@ void set_signals() throw()
   {
   interrupted = false;
   signal( SIGINT, sighandler );
+#ifdef SIGHUP
   signal( SIGHUP, sighandler );
+#endif
   signal( SIGTERM, sighandler );
+#ifdef SIGUSR1
   signal( SIGUSR1, SIG_IGN );
   signal( SIGUSR2, SIG_IGN );
+#endif
   }
diff -rup ddrescue-1.12-rc1.orig/ddrescue.h ddrescue-1.12-rc1/ddrescue.h
--- ddrescue-1.12-rc1.orig/ddrescue.h	2010-01-03 01:08:17.000000000 +0100
+++ ddrescue-1.12-rc1/ddrescue.h	2010-03-02 22:42:38.212250000 +0100
@@ -181,3 +181,10 @@ void internal_error( const char * msg ) 
 void show_error( const char * msg,
                  const int errcode = 0, const bool help = false ) throw();
 void write_logfile_header( FILE * f ) throw();
+
+#ifdef _WIN32
+#include <io.h>
+#define lseek lseek64
+inline int fsync(int) { return 0; }
+#endif
+
diff -rup ddrescue-1.12-rc1.orig/logbook.cc ddrescue-1.12-rc1/logbook.cc
--- ddrescue-1.12-rc1.orig/logbook.cc	2010-01-03 01:08:17.000000000 +0100
+++ ddrescue-1.12-rc1/logbook.cc	2010-03-02 21:12:02.056000000 +0100
@@ -217,7 +217,11 @@ Logbook::Logbook( const long long ipos, 
     final_msg_( 0 ), final_errno_( 0 ), index_( 0 ),
     ul_t1( std::time( 0 ) )
   {
+#ifdef _SC_PAGESIZE
   int alignment = sysconf( _SC_PAGESIZE );
+#else
+  int alignment = 4096;
+#endif
   if( alignment < hardbs_ || alignment % hardbs_ ) alignment = hardbs_;
   if( alignment < 2 || alignment > 65536 ) alignment = 0;
   iobuf_ = iobuf_base = new char[ softbs_ + alignment ];