Merge topic 'tutorial_step5_update'

92edbce342 Tutorial: Update step 5 style

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Merge-request: !7728

16 files changed, 317 insertions, 61 deletions

diff --git a/Help/guide/tutorial/Adding Export Configuration.rst b/Help/guide/tutorial/Adding Export Configuration.rst
index 3bd6d64..eb14f42 100644
--- a/Help/guide/tutorial/Adding Export Configuration.rst
+++ b/Help/guide/tutorial/Adding Export Configuration.rst
@@ -21,7 +21,7 @@ in ``MathFunctions/CMakeLists.txt`` to look like:
   :caption: MathFunctions/CMakeLists.txt
   :name: MathFunctions/CMakeLists.txt-install-TARGETS-EXPORT
   :language: cmake
-  :start-after: # install rules
+  :start-after: # install libs
 
 Now that we have ``MathFunctions`` being exported, we also need to explicitly
 install the generated ``MathFunctionsTargets.cmake`` file. This is done by
diff --git a/Help/guide/tutorial/Adding Generator Expressions.rst b/Help/guide/tutorial/Adding Generator Expressions.rst
index ba728bd..6f9714e 100644
--- a/Help/guide/tutorial/Adding Generator Expressions.rst
+++ b/Help/guide/tutorial/Adding Generator Expressions.rst
@@ -158,6 +158,7 @@ and this:
   :name: MathFunctions-CMakeLists.txt-target_link_libraries-step4
   :language: cmake
   :start-after: # link our compiler flags interface library
+  :end-before: # TODO 1
 
 .. raw:: html
 
diff --git a/Help/guide/tutorial/Adding System Introspection.rst b/Help/guide/tutorial/Adding System Introspection.rst
index 4f3e808..ba91df4 100644
--- a/Help/guide/tutorial/Adding System Introspection.rst
+++ b/Help/guide/tutorial/Adding System Introspection.rst
@@ -30,7 +30,7 @@ If available, use :command:`target_compile_definitions` to specify
   :name: MathFunctions/CMakeLists.txt-target_compile_definitions
   :language: cmake
   :start-after: # add compile definitions
-  :end-before: # install rules
+  :end-before: # install libs
 
 If ``log`` and ``exp`` are available on the system, then we will use them to
 compute the square root in the ``mysqrt`` function. Add the following code to
diff --git a/Help/guide/tutorial/Adding a Custom Command and Generated File.rst b/Help/guide/tutorial/Adding a Custom Command and Generated File.rst
index 343979e..b1f9840 100644
--- a/Help/guide/tutorial/Adding a Custom Command and Generated File.rst
+++ b/Help/guide/tutorial/Adding a Custom Command and Generated File.rst
@@ -62,7 +62,7 @@ directories so that ``Table.h`` can be found and included by ``mysqrt.cxx``.
   :name: MathFunctions/CMakeLists.txt-target_include_directories-Table.h
   :language: cmake
   :start-after: # state that we depend on our bin
-  :end-before: # install rules
+  :end-before: # install libs
 
 Now let's use the generated table. First, modify ``mysqrt.cxx`` to include
 ``Table.h``. Next, we can rewrite the ``mysqrt`` function to use the table:
diff --git a/Help/guide/tutorial/Complete/MathFunctions/CMakeLists.txt b/Help/guide/tutorial/Complete/MathFunctions/CMakeLists.txt
index 40b9fd2..d256db2 100644
--- a/Help/guide/tutorial/Complete/MathFunctions/CMakeLists.txt
+++ b/Help/guide/tutorial/Complete/MathFunctions/CMakeLists.txt
@@ -56,7 +56,7 @@ target_compile_definitions(MathFunctions PRIVATE "EXPORTING_MYMATH")
 set_property(TARGET MathFunctions PROPERTY VERSION "1.0.0")
 set_property(TARGET MathFunctions PROPERTY SOVERSION "1")
 
-# install rules
+# install libs
 set(installable_libs MathFunctions tutorial_compiler_flags)
 if(TARGET SqrtLibrary)
   list(APPEND installable_libs SqrtLibrary)
@@ -64,4 +64,5 @@ endif()
 install(TARGETS ${installable_libs}
         EXPORT MathFunctionsTargets
         DESTINATION lib)
+# install include headers
 install(FILES MathFunctions.h DESTINATION include)
diff --git a/Help/guide/tutorial/Installing and Testing.rst b/Help/guide/tutorial/Installing and Testing.rst
index 8daf5aa..3969192 100644
--- a/Help/guide/tutorial/Installing and Testing.rst
+++ b/Help/guide/tutorial/Installing and Testing.rst
@@ -1,50 +1,80 @@
 Step 5: Installing and Testing
 ==============================
 
-Now we can start adding install rules and testing support to our project.
+.. _`Tutorial Testing Support`:
+
+Exercise 1 - Install Rules
+^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Often, it is not enough to only build an executable, it should also be
+installable. With CMake, we can specify install rules using the
+:command:`install` command. Supporting local installations for your builds in
+CMake is often as simple as specifying an install location and the targets and
+files to be installed.
+
+Goal
+----
+
+Install the ``Tutorial`` executable and the ``MathFunctions`` library.
+
+Helpful Materials
+-----------------
+
+* :command:`install`
 
-Install Rules
+Files to Edit
 -------------
 
-The install rules are fairly simple: for ``MathFunctions`` we want to install
-the library and header file and for the application we want to install the
-executable and configured header.
+* ``MathFunctions/CMakeLists.txt``
+* ``CMakeLists.txt``
 
-So to the end of ``MathFunctions/CMakeLists.txt`` we add:
+Getting Started
+---------------
 
-.. literalinclude:: Step6/MathFunctions/CMakeLists.txt
-  :caption: MathFunctions/CMakeLists.txt
-  :name: MathFunctions/CMakeLists.txt-install-TARGETS
-  :language: cmake
-  :start-after: # install rules
+The starting code is provided in the ``Step5`` directory. In this
+exercise, complete ``TODO 1`` through ``TODO 4``.
 
-And to the end of the top-level ``CMakeLists.txt`` we add:
+First, update ``MathFunctions/CMakeLists.txt`` to install the
+``MathFunctions`` and ``tutorial_compiler_flags`` libraries to the ``lib``
+directory. In that same file, specify the install rules needed to install
+``MathFunctions.h`` to the ``include`` directory.
 
-.. literalinclude:: Step6/CMakeLists.txt
-  :caption: CMakeLists.txt
-  :name: CMakeLists.txt-install-TARGETS
-  :language: cmake
-  :start-after: # add the install targets
-  :end-before: # enable testing
+Then, update the top level ``CMakeLists.txt`` to install
+the ``Tutorial`` executable to the ``bin`` directory. Lastly, any header files
+should be installed to the ``include`` directory. Remember that
+``TutorialConfig.h`` is in the :variable:`PROJECT_BINARY_DIR`.
 
-That is all that is needed to create a basic local install of the tutorial.
+Build and Run
+-------------
 
-Now run the :manual:`cmake  <cmake(1)>` executable or the
+Make a new directory called ``Step5_build``. Run the
+:manual:`cmake <cmake(1)>` executable or the
 :manual:`cmake-gui <cmake-gui(1)>` to configure the project and then build it
 with your chosen build tool.
 
-Then run the install step by using the ``install`` option of the
+Then, run the install step by using the ``install`` option of the
 :manual:`cmake  <cmake(1)>` command (introduced in 3.15, older versions of
-CMake must use ``make install``) from the command line. For
-multi-configuration tools, don't forget to use the ``--config`` argument to
-specify the configuration. If using an IDE, simply build the ``INSTALL``
-target. This step will install the appropriate header files, libraries, and
-executables. For example:
+CMake must use ``make install``) from the command line. This step will
+install the appropriate header files, libraries, and executables. For example:
 
 .. code-block:: console
 
   cmake --install .
 
+For multi-configuration tools, don't forget to use the ``--config`` argument to
+specify the configuration.
+
+.. code-block:: console
+
+  cmake --install . --config Release
+
+If using an IDE, simply build the ``INSTALL`` target. You can build the same
+install target from the command line like the following:
+
+.. code-block:: console
+
+  cmake --build . --target install --config Debug
+
 The CMake variable :variable:`CMAKE_INSTALL_PREFIX` is used to determine the
 root of where the files will be installed. If using the ``cmake --install``
 command, the installation prefix can be overridden via the ``--prefix``
@@ -54,42 +84,227 @@ argument. For example:
 
   cmake --install . --prefix "/home/myuser/installdir"
 
-Navigate to the install directory and verify that the installed Tutorial runs.
+Navigate to the install directory and verify that the installed ``Tutorial``
+runs.
 
-.. _`Tutorial Testing Support`:
+Solution
+--------
 
-Testing Support
----------------
+The install rules for our project are fairly simple:
 
-Next let's test our application. At the end of the top-level ``CMakeLists.txt``
-file we can enable testing and then add a number of basic tests to verify that
-the application is working correctly.
+* For ``MathFunctions``, we want to install the libraries and header file to
+  the ``lib`` and ``include`` directories respectively.
+
+* For the ``Tutorial`` executable, we want to install the executable and
+  configured header file to the ``bin`` and ``include`` directories
+  respectively.
+
+So to the end of ``MathFunctions/CMakeLists.txt`` we add:
+
+.. raw:: html
+
+  <details><summary>TODO 1: Click to show/hide answer</summary>
+
+.. literalinclude:: Step6/MathFunctions/CMakeLists.txt
+  :caption: TODO 1: MathFunctions/CMakeLists.txt
+  :name: MathFunctions/CMakeLists.txt-install-TARGETS
+  :language: cmake
+  :start-after: # install libs
+  :end-before: # install include headers
+
+.. raw:: html
+
+  </details>
+
+and
+
+.. raw:: html
+
+  <details><summary>TODO 2: Click to show/hide answer</summary>
+
+.. literalinclude:: Step6/MathFunctions/CMakeLists.txt
+  :caption: TODO 2: MathFunctions/CMakeLists.txt
+  :name: MathFunctions/CMakeLists.txt-install-headers
+  :language: cmake
+  :start-after: # install include headers
+
+.. raw:: html
+
+  </details>
+
+The install rules for the ``Tutorial`` executable and configured header file
+are similar. To the end of the top-level ``CMakeLists.txt`` we add:
+
+.. raw:: html
+
+  <details><summary>TODO 3,4: Click to show/hide answer</summary>
 
 .. literalinclude:: Step6/CMakeLists.txt
   :caption: CMakeLists.txt
-  :name: CMakeLists.txt-enable_testing
+  :name: TODO 3,4: CMakeLists.txt-install-TARGETS
   :language: cmake
-  :start-after: # enable testing
+  :start-after: # add the install targets
+  :end-before: # enable testing
+
+.. raw:: html
+
+  </details>
 
-The first test simply verifies that the application runs, does not segfault or
-otherwise crash, and has a zero return value. This is the basic form of a
-CTest test.
+That is all that is needed to create a basic local
+install of the tutorial.
 
-The next test makes use of the :prop_test:`PASS_REGULAR_EXPRESSION` test
-property to verify that the output of the test contains certain strings. In
-this case, verifying that the usage message is printed when an incorrect number
-of arguments are provided.
+Exercise 2 - Testing Support
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-Lastly, we have a function called ``do_test`` that runs the application and
-verifies that the computed square root is correct for given input. For each
-invocation of ``do_test``, another test is added to the project with a name,
-input, and expected results based on the passed arguments.
+CTest offers a way to easily manage tests for your project. Tests can be
+added through the :command:`add_test` command. Although it is not
+explicitly covered in this tutorial, there is a lot of compatibility
+between CTest and other testing frameworks such as :module:`GoogleTest`.
 
-Rebuild the application and then cd to the binary directory and run the
+Goal
+----
+
+Create unit tests for our executable using CTest.
+
+Helpful Materials
+-----------------
+
+* :command:`enable_testing`
+* :command:`add_test`
+* :command:`function`
+* :command:`set_tests_properties`
+* :manual:`ctest <ctest(1)>`
+
+Files to Edit
+-------------
+
+* ``CMakeLists.txt``
+
+Getting Started
+---------------
+
+The starting source code is provided in the ``Step5`` directory. In this
+exercise, complete ``TODO 5`` through ``TODO 9``.
+
+First, we need to enable testing. Next, begin adding tests to our project
+using :command:`add_test`. We will work through adding 3 simple tests and
+then you can add additional testing as you see fit.
+
+Build and Run
+-------------
+
+Navigate to the build directory and rebuild the application. Then, run the
 :manual:`ctest <ctest(1)>` executable: ``ctest -N`` and ``ctest -VV``. For
 multi-config generators (e.g. Visual Studio), the configuration type must be
 specified with the ``-C <mode>`` flag.  For example, to run tests in Debug
-mode use ``ctest -C Debug -VV`` from the binary directory
+mode use ``ctest -C Debug -VV`` from the build directory
 (not the Debug subdirectory!). Release mode would be executed from the same
-location but with a ``-C Release``.  Alternatively, build the ``RUN_TESTS``
+location but with a ``-C Release``. Alternatively, build the ``RUN_TESTS``
 target from the IDE.
+
+Solution
+--------
+
+Let's test our application. At the end of the top-level ``CMakeLists.txt``
+file we first need to enable testing with the
+:command:`enable_testing` command.
+
+.. raw:: html
+
+  <details><summary>TODO 5: Click to show/hide answer</summary>
+
+.. literalinclude:: Step6/CMakeLists.txt
+  :caption: TODO 5: CMakeLists.txt
+  :name: CMakeLists.txt-enable_testing
+  :language: cmake
+  :start-after: # enable testing
+  :end-before: # does the application run
+
+.. raw:: html
+
+  </details>
+
+With testing enabled, we will add a number of basic tests to verify
+that the application is working correctly. First, we create a test using
+:command:`add_test` which runs the ``Tutorial`` executable with the
+parameter 25 passed in. For this test, we are not going to check the
+executable's computed answer. This test will verify that
+application runs, does not segfault or otherwise crash, and has a zero
+return value. This is the basic form of a CTest test.
+
+.. raw:: html
+
+  <details><summary>TODO 6: Click to show/hide answer</summary>
+
+.. literalinclude:: Step6/CMakeLists.txt
+  :caption: TODO 6: CMakeLists.txt
+  :name: CMakeLists.txt-test-runs
+  :language: cmake
+  :start-after: # does the application run
+  :end-before: # does the usage message work
+
+.. raw:: html
+
+  </details>
+
+Next, let's use the :prop_test:`PASS_REGULAR_EXPRESSION` test property to
+verify that the output of the test contains certain strings. In this case,
+verifying that the usage message is printed when an incorrect number of
+arguments are provided.
+
+.. raw:: html
+
+  <details><summary>TODO 7: Click to show/hide answer</summary>
+
+.. literalinclude:: Step6/CMakeLists.txt
+  :caption: TODO 7: CMakeLists.txt
+  :name: CMakeLists.txt-test-usage
+  :language: cmake
+  :start-after: # does the usage message work?
+  :end-before: # define a function to simplify adding tests
+
+.. raw:: html
+
+  </details>
+
+The next test we will add verifies the computed value is truly the
+square root.
+
+.. raw:: html
+
+  <details><summary>TODO 8: Click to show/hide answer</summary>
+
+.. code-block:: cmake
+  :caption: TODO 8: CMakeLists.txt
+  :name: CMakeLists.txt-test-standard
+
+  add_test(NAME StandardUse COMMAND Tutorial 4)
+  set_tests_properties(StandardUse
+    PROPERTIES PASS_REGULAR_EXPRESSION "4 is 2"
+    )
+
+.. raw:: html
+
+  </details>
+
+This one test is not enough to give us confidence that it will
+work for all values passed in. We should add more tests to verify this.
+To easily add more tests, we make a function called ``do_test`` that runs the
+application and verifies that the computed square root is correct for
+given input. For each invocation of ``do_test``, another test is added to
+the project with a name, input, and expected results based on the passed
+arguments.
+
+.. raw:: html
+
+  <details><summary>TODO 9: Click to show/hide answer</summary>
+
+.. literalinclude:: Step6/CMakeLists.txt
+  :caption: TODO 9: CMakeLists.txt
+  :name: CMakeLists.txt-generalized-tests
+  :language: cmake
+  :start-after: # define a function to simplify adding tests
+
+.. raw:: html
+
+  </details>
diff --git a/Help/guide/tutorial/Packaging Debug and Release.rst b/Help/guide/tutorial/Packaging Debug and Release.rst
index fc2050e..8c660a3 100644
--- a/Help/guide/tutorial/Packaging Debug and Release.rst
+++ b/Help/guide/tutorial/Packaging Debug and Release.rst
@@ -41,7 +41,7 @@ Let's also add version numbering to the ``MathFunctions`` library. In
   :name: MathFunctions/CMakeLists.txt-VERSION-properties
   :language: cmake
   :start-after: # setup the version numbering
-  :end-before: # install rules
+  :end-before: # install libs
 
 From the ``Step12`` directory, create ``debug`` and ``release``
 subdirectories. The layout will look like:
diff --git a/Help/guide/tutorial/Step10/MathFunctions/CMakeLists.txt b/Help/guide/tutorial/Step10/MathFunctions/CMakeLists.txt
index d7f30d6..fa73321 100644
--- a/Help/guide/tutorial/Step10/MathFunctions/CMakeLists.txt
+++ b/Help/guide/tutorial/Step10/MathFunctions/CMakeLists.txt
@@ -25,7 +25,8 @@ target_include_directories(MathFunctions
 # link our compiler flags interface library
 target_link_libraries(MathFunctions tutorial_compiler_flags)
 
-# install rules
+# install libs
 set(installable_libs MathFunctions tutorial_compiler_flags)
 install(TARGETS ${installable_libs} DESTINATION lib)
+# install include headers
 install(FILES MathFunctions.h DESTINATION include)
diff --git a/Help/guide/tutorial/Step11/MathFunctions/CMakeLists.txt b/Help/guide/tutorial/Step11/MathFunctions/CMakeLists.txt
index 0e86a12..a60fb63 100644
--- a/Help/guide/tutorial/Step11/MathFunctions/CMakeLists.txt
+++ b/Help/guide/tutorial/Step11/MathFunctions/CMakeLists.txt
@@ -50,10 +50,11 @@ target_link_libraries(MathFunctions PUBLIC tutorial_compiler_flags)
 # building on windows
 target_compile_definitions(MathFunctions PRIVATE "EXPORTING_MYMATH")
 
-# install rules
+# install libs
 set(installable_libs MathFunctions tutorial_compiler_flags)
 if(TARGET SqrtLibrary)
   list(APPEND installable_libs SqrtLibrary)
 endif()
 install(TARGETS ${installable_libs} DESTINATION lib)
+# install include headers
 install(FILES MathFunctions.h DESTINATION include)
diff --git a/Help/guide/tutorial/Step12/MathFunctions/CMakeLists.txt b/Help/guide/tutorial/Step12/MathFunctions/CMakeLists.txt
index d5961da..a85f3cb 100644
--- a/Help/guide/tutorial/Step12/MathFunctions/CMakeLists.txt
+++ b/Help/guide/tutorial/Step12/MathFunctions/CMakeLists.txt
@@ -52,7 +52,7 @@ target_link_libraries(MathFunctions PUBLIC tutorial_compiler_flags)
 # building on windows
 target_compile_definitions(MathFunctions PRIVATE "EXPORTING_MYMATH")
 
-# install rules
+# install libs
 set(installable_libs MathFunctions tutorial_compiler_flags)
 if(TARGET SqrtLibrary)
   list(APPEND installable_libs SqrtLibrary)
@@ -60,4 +60,5 @@ endif()
 install(TARGETS ${installable_libs}
         EXPORT MathFunctionsTargets
         DESTINATION lib)
+# install include headers
 install(FILES MathFunctions.h DESTINATION include)
diff --git a/Help/guide/tutorial/Step5/CMakeLists.txt b/Help/guide/tutorial/Step5/CMakeLists.txt
index 4003c21..a8f241a 100644
--- a/Help/guide/tutorial/Step5/CMakeLists.txt
+++ b/Help/guide/tutorial/Step5/CMakeLists.txt
@@ -38,3 +38,27 @@ target_link_libraries(Tutorial PUBLIC ${EXTRA_LIBS} tutorial_compiler_flags)
 target_include_directories(Tutorial PUBLIC
                            "${PROJECT_BINARY_DIR}"
                            )
+
+# TODO 3: Install Tutorial in the bin directory
+# Hint: Use the TARGETS and DESTINATION parameters
+
+# TODO 4: Install Tutorial.h to the include directory
+# Hint: Use the FILES and DESTINATION parameters
+
+# TODO 5: Enable testing
+
+# TODO 6: Add a test called Runs which runs the following command:
+# $ Tutorial 25
+
+# TODO 7: Add a test called Usage which runs the following command:
+# $ Tutorial
+# Make sure the expected output is displayed.
+# Hint: Use the PASS_REGULAR_EXPRESSION property with "Usage.*number"
+
+# TODO 8: Add a test which runs the following command:
+# $ Tutorial 4
+# Make sure the result is correct.
+# Hint: Use the PASS_REGULAR_EXPRESSION property with "4 is 2"
+
+# TODO 9: Add more tests. Create a function called do_test to avoid copy +
+# paste. Test the following values: 4, 9, 5, 7, 25, -25 and 0.00001.
diff --git a/Help/guide/tutorial/Step5/MathFunctions/CMakeLists.txt b/Help/guide/tutorial/Step5/MathFunctions/CMakeLists.txt
index fc932af..6cd88d7 100644
--- a/Help/guide/tutorial/Step5/MathFunctions/CMakeLists.txt
+++ b/Help/guide/tutorial/Step5/MathFunctions/CMakeLists.txt
@@ -8,3 +8,11 @@ target_include_directories(MathFunctions
 
 # link our compiler flags interface library
 target_link_libraries(MathFunctions tutorial_compiler_flags)
+
+# TODO 1: Create a variable called installable_libs that is a list of all
+# libraries we want to install (e.g. MathFunctions and tutorial_compiler_flags)
+# Then install the installable libraries to the lib folder.
+# Hint: Use the TARGETS and DESTINATION parameters
+
+# TODO 2: Install the library headers to the include folder.
+# Hint: Use the FILES and DESTINATION parameters
diff --git a/Help/guide/tutorial/Step6/MathFunctions/CMakeLists.txt b/Help/guide/tutorial/Step6/MathFunctions/CMakeLists.txt
index e7667ab..b4724c4 100644
--- a/Help/guide/tutorial/Step6/MathFunctions/CMakeLists.txt
+++ b/Help/guide/tutorial/Step6/MathFunctions/CMakeLists.txt
@@ -9,7 +9,8 @@ target_include_directories(MathFunctions
 # link our compiler flags interface library
 target_link_libraries(MathFunctions tutorial_compiler_flags)
 
-# install rules
+# install libs
 set(installable_libs MathFunctions tutorial_compiler_flags)
 install(TARGETS ${installable_libs} DESTINATION lib)
+# install include headers
 install(FILES MathFunctions.h DESTINATION include)
diff --git a/Help/guide/tutorial/Step7/MathFunctions/CMakeLists.txt b/Help/guide/tutorial/Step7/MathFunctions/CMakeLists.txt
index e7667ab..b4724c4 100644
--- a/Help/guide/tutorial/Step7/MathFunctions/CMakeLists.txt
+++ b/Help/guide/tutorial/Step7/MathFunctions/CMakeLists.txt
@@ -9,7 +9,8 @@ target_include_directories(MathFunctions
 # link our compiler flags interface library
 target_link_libraries(MathFunctions tutorial_compiler_flags)
 
-# install rules
+# install libs
 set(installable_libs MathFunctions tutorial_compiler_flags)
 install(TARGETS ${installable_libs} DESTINATION lib)
+# install include headers
 install(FILES MathFunctions.h DESTINATION include)
diff --git a/Help/guide/tutorial/Step8/MathFunctions/CMakeLists.txt b/Help/guide/tutorial/Step8/MathFunctions/CMakeLists.txt
index 4a19684..f81b563 100644
--- a/Help/guide/tutorial/Step8/MathFunctions/CMakeLists.txt
+++ b/Help/guide/tutorial/Step8/MathFunctions/CMakeLists.txt
@@ -32,7 +32,8 @@ if(HAVE_LOG AND HAVE_EXP)
                              PRIVATE "HAVE_LOG" "HAVE_EXP")
 endif()
 
-# install rules
+# install libs
 set(installable_libs MathFunctions tutorial_compiler_flags)
 install(TARGETS ${installable_libs} DESTINATION lib)
+# install include headers
 install(FILES MathFunctions.h DESTINATION include)
diff --git a/Help/guide/tutorial/Step9/MathFunctions/CMakeLists.txt b/Help/guide/tutorial/Step9/MathFunctions/CMakeLists.txt
index 6a1a108..8e04f97 100644
--- a/Help/guide/tutorial/Step9/MathFunctions/CMakeLists.txt
+++ b/Help/guide/tutorial/Step9/MathFunctions/CMakeLists.txt
@@ -27,7 +27,8 @@ target_include_directories(MathFunctions
 # link our compiler flags interface library
 target_link_libraries(MathFunctions tutorial_compiler_flags)
 
-# install rules
+# install libs
 set(installable_libs MathFunctions tutorial_compiler_flags)
 install(TARGETS ${installable_libs} DESTINATION lib)
+# install include headers
 install(FILES MathFunctions.h DESTINATION include)