started updating examples for cmake v3 syntax

01-basic/D-shared-library/README.adoc

@@ -6,7 +6,9 @@ toc::[]
 
 # Introduction
 
-Shows a hello world example which first creates and links a shared library
+Shows a hello world example which first creates and links a shared library.
+
+This also shows how to create an link:https://cmake.org/cmake/help/v3.0/manual/cmake-buildsystem.7.html#alias-targets[alias target]
 
 The files in this tutorial are below:
 
@@ -48,6 +50,17 @@ add_library(hello_library SHARED ${library_SOURCES})
 This will be used to create a shared library with the name libhello_library.so with
 the sources from the +library_SOURCES+ variable.
 
+## Alias Target
+
+As the name suggests an alias target is an alternative name for a target that can be used instead of the real target name in read-only contexts.
+
+[source,cmake]
+----
+add_library(hello::library ALIAS hello_library)
+----
+
+As show below, this allows you to reference the target using the alias name when linking it against other targets.
+
 ## Linking a Shared Library
 
 Linking a shared library is the same as linking a static library. When creating your
@@ -58,12 +71,11 @@ executable use the the +target_link_library()+ function to point to your library
 add_executable(hello_binary ${binary_SOURCES})
 
 target_link_libraries( hello_binary
-    hello_library
+    hello::library
 )
 ----
 
-This tells CMake to link the hello_library against the hello_binary executable
-during link time.
+This tells CMake to link the hello_library against the hello_binary executable using the alias target name.
 
 An example of this being called by the linker is