--- a/squashfs-tools/mksquashfs.c
+++ b/squashfs-tools/mksquashfs.c
@@ -51,15 +51,22 @@
 #include <sys/wait.h>
 
 #ifndef linux
+#ifndef __CYGWIN__
 #define __BYTE_ORDER BYTE_ORDER
 #define __BIG_ENDIAN BIG_ENDIAN
 #define __LITTLE_ENDIAN LITTLE_ENDIAN
 #include <sys/sysctl.h>
+#endif /* __CYGWIN__ */
 #else
 #include <endian.h>
 #include <sys/sysinfo.h>
 #endif
 
+#ifdef __CYGWIN__
+#include <sys/termios.h>
+#define FNM_EXTMATCH  (1 << 5)
+#endif
+
 #ifndef FNM_EXTMATCH
 #define FNM_EXTMATCH 0
 #endif
@@ -844,6 +851,7 @@ void sigusr1_handler()
 
 void sigwinch_handler()
 {
+#ifndef __CYGWIN__
 	struct winsize winsize;
 
 	if(ioctl(1, TIOCGWINSZ, &winsize) == -1) {
@@ -853,6 +861,9 @@ void sigwinch_handler()
 		columns = 80;
 	} else
 		columns = winsize.ws_col;
+#else
+	columns = 80;
+#endif
 }
 
 
@@ -4066,6 +4077,9 @@ void initialise_threads(int readb_mbytes
 
 	signal(SIGUSR1, sigusr1_handler);
 
+#ifdef __CYGWIN__
+	processors = atoi(getenv("NUMBER_OF_PROCESSORS"));
+#else
 	if(processors == -1) {
 #ifndef linux
 		int mib[2];
@@ -4087,6 +4101,7 @@ void initialise_threads(int readb_mbytes
 		processors = sysconf(_SC_NPROCESSORS_ONLN);
 #endif
 	}
+#endif /* __CYGWIN__ */
 
 	thread = malloc((2 + processors * 2) * sizeof(pthread_t));
 	if(thread == NULL)
--- a/squashfs-tools/read_fs.c
+++ b/squashfs-tools/read_fs.c
@@ -33,9 +33,11 @@
 #include <sys/mman.h>
 
 #ifndef linux
+#ifndef __CYGWIN__
 #define __BYTE_ORDER BYTE_ORDER
 #define __BIG_ENDIAN BIG_ENDIAN
 #define __LITTLE_ENDIAN LITTLE_ENDIAN
+#endif
 #else
 #include <endian.h>
 #endif
--- a/squashfs-tools/swap.c
+++ b/squashfs-tools/swap.c
@@ -20,9 +20,11 @@
  */
 
 #ifndef linux
+#ifndef __CYGWIN__
 #define __BYTE_ORDER BYTE_ORDER
 #define __BIG_ENDIAN BIG_ENDIAN
 #define __LITTLE_ENDIAN LITTLE_ENDIAN
+#endif
 #else
 #include <endian.h>
 #endif
--- a/squashfs-tools/unsquashfs.c
+++ b/squashfs-tools/unsquashfs.c
@@ -117,6 +117,7 @@ void update_progress_bar();
 
 void sigwinch_handler()
 {
+#ifndef __CYGWIN__
 	struct winsize winsize;
 
 	if(ioctl(1, TIOCGWINSZ, &winsize) == -1) {
@@ -126,6 +127,9 @@ void sigwinch_handler()
 		columns = 80;
 	} else
 		columns = winsize.ws_col;
+#else
+	columns = 80;
+#endif
 }
 
 
@@ -1807,7 +1811,9 @@ void initialise_threads(int fragment_buf
 	if(sigprocmask(SIG_BLOCK, &sigmask, &old_mask) == -1)
 		EXIT_UNSQUASH("Failed to set signal mask in intialise_threads"
 			"\n");
-
+#ifdef __CYGWIN__
+	processors = atoi(getenv("NUMBER_OF_PROCESSORS"));
+#else
 	if(processors == -1) {
 #ifndef linux
 		int mib[2];
@@ -1829,6 +1835,7 @@ void initialise_threads(int fragment_buf
 		processors = sysconf(_SC_NPROCESSORS_ONLN);
 #endif
 	}
+#endif /* __CYGWIN__ */
 
 	thread = malloc((3 + processors) * sizeof(pthread_t));
 	if(thread == NULL)
--- a/squashfs-tools/unsquashfs.h
+++ b/squashfs-tools/unsquashfs.h
@@ -46,15 +46,22 @@
 #include <sys/time.h>
 
 #ifndef linux
+#ifndef __CYGWIN__
 #define __BYTE_ORDER BYTE_ORDER
 #define __BIG_ENDIAN BIG_ENDIAN
 #define __LITTLE_ENDIAN LITTLE_ENDIAN
 #include <sys/sysctl.h>
+#endif
 #else
 #include <endian.h>
 #include <sys/sysinfo.h>
 #endif
 
+#ifdef __CYGWIN__
+#include <sys/termios.h>
+#define FNM_EXTMATCH  (1 << 5)
+#endif
+
 #ifndef FNM_EXTMATCH
 #define FNM_EXTMATCH 0
 #endif