diff --git a/README.CYGWIN.md b/README.CYGWIN.md
new file mode 100644
index 0000000..43a9ef8
--- /dev/null
+++ b/README.CYGWIN.md
@@ -0,0 +1,130 @@
+## STEP BY STEP INSTALLATION GUIDE: ##
+
+#### Step 1: ####
+
+Get [Cygwin](https://cygwin.com):
+
+32-Bit: https://cygwin.com/setup-x86.exe  
+64-Bit: https://cygwin.com/setup-x86_64.exe
+
+Note: *You can compile for 64-bit in a 32-bit environment.*
+
+Click on setup-*.exe and install the following packages:
+
+`git`, `make`, `clang`, `gcc-core`, `gcc-objc`, `gcc-g++`,  
+`patch`, `wget`, `libuuid-devel` and `pkg-config`
+
+#### Step 2: ####
+
+Open the Cygwin shell.
+
+![](images/cygwin/osxcross/2.png)
+
+#### Step 3: ####
+
+Clone the OSXCross repository.
+
+![](images/cygwin/osxcross/3.png)
+
+#### Step 4: ####
+
+Get the Mac OS X SDK and move it into  
+`C:\Cygwin*\home\<User>\osxcross\tarballs`.
+
+Please see [README](README.md) for more.
+
+#### Step 5: ####
+
+Build OSXCross:
+
+![](images/cygwin/osxcross/5_1.png)
+
+![](images/cygwin/osxcross/5_2.png)
+
+#### Step 6: ####
+
+Add the printed target/bin path to your `~/.bashrc`.
+
+![](images/cygwin/osxcross/6.png)
+
+#### Step 7: ####
+
+Restart the Cygwin shell.
+
+![](images/cygwin/osxcross/7.png)
+
+#### Step 8: ####
+
+Verify target/bin is in PATH:
+
+![](images/cygwin/osxcross/8.png)
+
+All done!
+
+## OPTIONAL: ##
+
+### Compiler-RT ###
+
+Please see [README.COMPILER-RT](README.COMPILER-RT.md) for more.
+
+#### Step 1: ####
+
+Build Compiler-RT:
+
+![](images/cygwin/compiler-rt/1.png)
+
+#### Step 2: ####
+
+Execute the printed commands:
+
+![](images/cygwin/compiler-rt/2.png)
+
+![](images/cygwin/compiler-rt/3.png)
+
+#### Step 3: ####
+
+Verify Compiler-RT works:
+
+![](images/cygwin/compiler-rt/4.png)
+
+## EXAMPLES: ###
+
+### osxcross-macports ###
+
+Please see [README.MACPORTS](README.MACPORTS.md) for more.
+
+#### Step 1: ####
+
+Change the deployment target to >= 10.7:
+
+![](images/cygwin/macports/1.png)
+
+#### Step 2: ####
+
+Restart the Cygwin shell:
+
+![](images/cygwin/macports/2.png)
+
+#### Step 3: ####
+
+Let's install libgeoip:
+
+![](images/cygwin/macports/3.png)
+
+#### Step 4: ####
+
+Write a simple test program:
+
+![](images/cygwin/macports/4.png)
+
+#### Step 5: ####
+
+Compile the test program:
+
+![](images/cygwin/macports/5.png)
+
+... or the xcrun way:
+
+![](images/cygwin/macports/6.png)
+
+
diff --git a/README.md b/README.md
index 746da20..f63dfe7 100644
--- a/README.md
+++ b/README.md
@@ -25,6 +25,8 @@ Please see [README.MACPORTS](README.MACPORTS.md) for more.
 
 ### INSTALLATION: ###
 
+*Windows/Cygwin users should follow [README.CYGWIN](README.CYGWIN.md).*
+
 Move your packaged SDK to the tarballs/ directory.
 
 Then ensure you have the following installed on your system:
diff --git a/images/cygwin/compiler-rt/1.png b/images/cygwin/compiler-rt/1.png
new file mode 100644
index 0000000..40acaa3
Binary files /dev/null and b/images/cygwin/compiler-rt/1.png differ
diff --git a/images/cygwin/compiler-rt/2.png b/images/cygwin/compiler-rt/2.png
new file mode 100644
index 0000000..ee1e324
Binary files /dev/null and b/images/cygwin/compiler-rt/2.png differ
diff --git a/images/cygwin/compiler-rt/3.png b/images/cygwin/compiler-rt/3.png
new file mode 100644
index 0000000..3fbd8b7
Binary files /dev/null and b/images/cygwin/compiler-rt/3.png differ
diff --git a/images/cygwin/compiler-rt/4.png b/images/cygwin/compiler-rt/4.png
new file mode 100644
index 0000000..4437e41
Binary files /dev/null and b/images/cygwin/compiler-rt/4.png differ
diff --git a/images/cygwin/macports/1.png b/images/cygwin/macports/1.png
new file mode 100644
index 0000000..6400d55
Binary files /dev/null and b/images/cygwin/macports/1.png differ
diff --git a/images/cygwin/macports/2.png b/images/cygwin/macports/2.png
new file mode 100644
index 0000000..fada330
Binary files /dev/null and b/images/cygwin/macports/2.png differ
diff --git a/images/cygwin/macports/3.png b/images/cygwin/macports/3.png
new file mode 100644
index 0000000..76478b4
Binary files /dev/null and b/images/cygwin/macports/3.png differ
diff --git a/images/cygwin/macports/4.png b/images/cygwin/macports/4.png
new file mode 100644
index 0000000..ccc0fd5
Binary files /dev/null and b/images/cygwin/macports/4.png differ
diff --git a/images/cygwin/macports/5.png b/images/cygwin/macports/5.png
new file mode 100644
index 0000000..6cd0d88
Binary files /dev/null and b/images/cygwin/macports/5.png differ
diff --git a/images/cygwin/macports/6.png b/images/cygwin/macports/6.png
new file mode 100644
index 0000000..fed6e13
Binary files /dev/null and b/images/cygwin/macports/6.png differ
diff --git a/images/cygwin/osxcross/2.png b/images/cygwin/osxcross/2.png
new file mode 100644
index 0000000..fada330
Binary files /dev/null and b/images/cygwin/osxcross/2.png differ
diff --git a/images/cygwin/osxcross/3.png b/images/cygwin/osxcross/3.png
new file mode 100644
index 0000000..2b2d8a6
Binary files /dev/null and b/images/cygwin/osxcross/3.png differ
diff --git a/images/cygwin/osxcross/5_1.png b/images/cygwin/osxcross/5_1.png
new file mode 100644
index 0000000..1161947
Binary files /dev/null and b/images/cygwin/osxcross/5_1.png differ
diff --git a/images/cygwin/osxcross/5_2.png b/images/cygwin/osxcross/5_2.png
new file mode 100644
index 0000000..dc15ce7
Binary files /dev/null and b/images/cygwin/osxcross/5_2.png differ
diff --git a/images/cygwin/osxcross/6.png b/images/cygwin/osxcross/6.png
new file mode 100644
index 0000000..03f9c17
Binary files /dev/null and b/images/cygwin/osxcross/6.png differ
diff --git a/images/cygwin/osxcross/7.png b/images/cygwin/osxcross/7.png
new file mode 100644
index 0000000..fada330
Binary files /dev/null and b/images/cygwin/osxcross/7.png differ
diff --git a/images/cygwin/osxcross/8.png b/images/cygwin/osxcross/8.png
new file mode 100644
index 0000000..fda9eb1
Binary files /dev/null and b/images/cygwin/osxcross/8.png differ