fixes #904 Static Build errors
diff --git a/README.md b/README.md
index c9559ed..4de07d6 100644
--- a/README.md
+++ b/README.md
@@ -44,13 +44,28 @@
3. `mkdir build`
4. `cd build`
5. `cmake ..`
- (You can add -DCMAKE_INSTALL_PREFIX=/usr/local or some other directory.)
+ (You can add `-DCMAKE_INSTALL_PREFIX=/usr/local` or some other directory.
+ You can specify a release build with `-DCMAKE_BUILD_TYPE=Release`.
6. `cmake --build .`
7. `ctest -C Debug .`
8. `cmake --build . --target install`
*NB:* This may have to be done as a privileged user.
9. (Linux only). `ldconfig` (As a privileged or root user.)
+Static Library (Windows Only)
+-----------------------------
+
+We normally build a dynamic library (.DLL) by default.
+
+If you want a static library (.LIB) , configure by passing `-DNN_STATIC_LIB=ON`
+to the `cmake` command.
+
+You will also need to define `NN_STATIC_LIB` in your compilation environment
+when building programs that use this library.
+
+This is required because of the way Windows DLL exports happen. This is not
+necessary when compiling on POSIX platforms.
+
Resources
---------
