Update to minimum CMake 3.5

And modernise some examples.

01-basic/D-shared-library/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.0)
+cmake_minimum_required(VERSION 3.5)
 
 project(hello_library)
 
@@ -6,32 +6,28 @@ project(hello_library)
 # Create a library
 ############################################################
 
-# Source files to be used in the library
-set(library_SOURCES
+#Generate the shared library from the library sources
+add_library(hello_library SHARED 
     src/Hello.cpp
 )
-
-#Generate the shared library from the library sources
-add_library(hello_library SHARED ${library_SOURCES})
 add_library(hello::library ALIAS hello_library)
 
 target_include_directories(hello_library
-    PUBLIC ${PROJECT_SOURCE_DIR}/include
+    PUBLIC 
+        ${PROJECT_SOURCE_DIR}/include
 )
 
 ############################################################
 # Create an executable
 ############################################################
 
-# Source fles for the binary
-set(binary_SOURCES
+# Add an executable with the above sources
+add_executable(hello_binary
     src/main.cpp
 )
 
-# Add an executable with the above sources
-add_executable(hello_binary ${binary_SOURCES})
-
 # link the new hello_library target with the hello_binary target
 target_link_libraries( hello_binary
-    PRIVATE hello::library
+    PRIVATE 
+        hello::library
 )