Add doxygen auto generation.

 Issue #20

Author: suikan4github

.gitignore

@@ -31,5 +31,9 @@
 *.out
 *.app
 
+# Doxygen
+*.bak
+
 # Directory
-build/
+build/
+html/

CHANGELOG.md

@@ -6,6 +6,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased] - YYYY-MM-DD
 ### Added
+- [Issue #20](https://github.com/suikan4github/template_application/issues/20) :  Add doxygen auto generation.
+
 ### Changed
 ### Fixed
 

CMakeLists.txt

@@ -45,5 +45,5 @@ include("CPack")
 # Subdirectories
 add_subdirectory("src")
 add_subdirectory("test")
-
+add_subdirectory("doc")
 

README.md

@@ -85,7 +85,7 @@ ctest
 Run followings on the shell. 
 ```Shell
 sudo snap install code --classic
-sudo apt-get install build-essential cmake
+sudo apt-get install build-essential cmake doxygen
 ```
 - Note 1: After installing VS CODE, install the [C++ Extension Pack](https://marketplace.visualstudio.com/items?itemName=ms-vscode.cpptools-extension-pack) and the [Gcov Viewer extension](https://marketplace.visualstudio.com/items?itemName=JacquesLucke.gcov-viewer) to the VS CODE.
 ### Windows
@@ -97,6 +97,7 @@ winget install Kitware.CMake -e
 winget install Microsoft.VisualStudio.2022.Community -e
 winget install Git.Git -e
 winget install Python.Python.3 -e
+winget install doxygen -e
 ```
 - Note 1: After installing VS CODE, install the [C++ Extension Pack](https://marketplace.visualstudio.com/items?itemName=ms-vscode.cpptools-extension-pack) and the [Gcov Viewer extension](https://marketplace.visualstudio.com/items?itemName=JacquesLucke.gcov-viewer) to the VS CODE.
 - Note 2: The above winget install the CMake installer only. Run the CMake once and complete the installation.
@@ -112,7 +113,7 @@ winget install Microsoft.VisualStudioCode -e
 ```
 Then, run followings on the Ubuntu shell. 
 ```Shell
-sudo apt-get install build-essential cmake ca-certificates
+sudo apt-get install build-essential cmake doxygen ca-certificates
 ```
 - Note 1: After installing VS CODE, install the [C++ Extension Pack](https://marketplace.visualstudio.com/items?itemName=ms-vscode.cpptools-extension-pack) and the [Gcov Viewer extension](https://marketplace.visualstudio.com/items?itemName=JacquesLucke.gcov-viewer) to the VS CODE.
 

doc/CMakeLists.txt

@@ -0,0 +1,16 @@
+# Search for Doxygen package. The result is stored to DOXYGEN_FOUND variable 
+find_package(Doxygen)
+
+# Is Doxygen found? 
+if(${DOXYGEN_FOUND})
+
+    # Declaration of doxygen command execution
+    add_custom_target(documents ALL
+        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+        COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile 
+        )
+
+else(${DOXYGEN_FOUND}) 
+    # Not found
+    message(WARNING "Doxygen package is not found.")
+endif(${DOXYGEN_FOUND})