Excerise 1 - Step 2

Signed-off-by: Nigel <nigelbarink@hotmail.com>

.gitignore

@@ -0,0 +1 @@
+*_build/

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

README.md

@@ -0,0 +1,15 @@
+# CMake Tutorial
+
+
+### Reasoning
+Cmake is too popular to ignore.
+Many crossplatform projects written in C and C++ use cmake as their buildtool of choice.
+As this is the case I feel I need to integrate and become more comfortable with CMake myself.
+
+[cmake.org tutorial](https://cmake.org/cmake/help/latest/guide/tutorial/A%20Basic%20Starting%20Point.html)
+
+### What is in this repository
+This directory contains source code examples for the CMake Tutorial.
+Each step has its own subdirectory containing code that may be used as a
+starting point. The tutorial examples are progressive so that each step
+provides the complete solution for the previous step.

README.txt

@@ -1,4 +0,0 @@
-This directory contains source code examples for the CMake Tutorial.
-Each step has its own subdirectory containing code that may be used as a
-starting point. The tutorial examples are progressive so that each step
-provides the complete solution for the previous step.

Step1/CMakeLists.txt

@@ -1,16 +1,11 @@
-# TODO 1: Set the minimum required version of CMake to be 3.10
+cmake_minimum_required(VERSION 3.10)
+project(
+    Tutorial
+    VERSION 1.0
+)
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD_REQUIRED True)
 
-# TODO 2: Create a project named Tutorial
-
-# TODO 7: Set the project version number as 1.0 in the above project command
-
-# TODO 6: Set the variable CMAKE_CXX_STANDARD to 11
-#         and the variable CMAKE_CXX_STANDARD_REQUIRED to True
-
-# TODO 8: Use configure_file to configure and copy TutorialConfig.h.in to
-#         TutorialConfig.h
-
-# TODO 3: Add an executable called Tutorial to the project
-# Hint: Be sure to specify the source file as tutorial.cxx
-
-# TODO 9: Use target_include_directories to include ${PROJECT_BINARY_DIR}
+configure_file(TutorialConfig.h.in TutorialConfig.h)
+add_executable(Tutorial tutorial.cxx)
+target_include_directories(Tutorial PUBLIC ${PROJECT_BINARY_DIR})

Step1/TutorialConfig.h.in

@@ -1,2 +1,4 @@
 // the configured options and settings for Tutorial
 // TODO 10: Define Tutorial_VERSION_MAJOR and Tutorial_VERSION_MINOR
+#define Tutorial_VERSION_MAJOR @Tutorial_VERSION_MAJOR@
+#define Tutorial_VERSION_MINOR @Tutorial_VERSION_MINOR@

Step1/tutorial.cxx

@@ -1,23 +1,21 @@
 // A simple program that computes the square root of a number
 #include <cmath>
-#include <cstdlib> // TODO 5: Remove this line
+
 #include <iostream>
 #include <string>
 
-// TODO 11: Include TutorialConfig.h
+#include "TutorialConfig.h"
 
 int main(int argc, char* argv[])
 {
   if (argc < 2) {
-    // TODO 12: Create a print statement using Tutorial_VERSION_MAJOR
-    //          and Tutorial_VERSION_MINOR
+    std::cout << argv[0] << " V " << Tutorial_VERSION_MAJOR << "." << Tutorial_VERSION_MINOR << std::endl;
     std::cout << "Usage: " << argv[0] << " number" << std::endl;
     return 1;
   }
 
   // convert input to double
-  // TODO 4: Replace atof(argv[1]) with std::stod(argv[1])
-  const double inputValue = atof(argv[1]);
+  const double inputValue = std::stod(argv[1]);
 
   // calculate square root
   const double outputValue = sqrt(inputValue);

Step2/CMakeLists.txt

@@ -11,15 +11,17 @@ set(CMAKE_CXX_STANDARD_REQUIRED True)
 # to the source code
 configure_file(TutorialConfig.h.in TutorialConfig.h)
 
-# TODO 2: Use add_subdirectory() to add MathFunctions to this project
+add_subdirectory(MathFunctions)
 
 # add the executable
 add_executable(Tutorial tutorial.cxx)
 
-# TODO 3: Use target_link_libraries to link the library to our executable
+target_link_libraries(Tutorial PUBLIC MathFunctions)
 
-# TODO 4: Add MathFunctions to Tutorial's target_include_directories()
-# Hint: ${PROJECT_SOURCE_DIR} is a path to the project source. AKA This folder!
+target_include_directories(Tutorial PUBLIC
+    "${PROJECT_BINARY_DIR}"
+        "${PROJECT_SOURCE_DIR}/MathFunctions"
+)
 
 # add the binary tree to the search path for include files
 # so that we will find TutorialConfig.h

Step2/MathFunctions/CMakeLists.txt

@@ -1,8 +1,7 @@
 # TODO 14: Remove mysqrt.cxx from the list of sources
 
-# TODO 1: Add a library called MathFunctions with sources MathFunctions.cxx
-# and mysqrt.cxx
-# Hint: You will need the add_library command
+
+add_library(MathFunctions MathFunctions.cxx mysqrt.cxx)
 
 # TODO 7: Create a variable USE_MYMATH using option and set default to ON
 

Step2/tutorial.cxx

@@ -3,7 +3,7 @@
 #include <iostream>
 #include <string>
 
-// TODO 5: Include MathFunctions.h
+#include "MathFunctions/MathFunctions.h"
 #include "TutorialConfig.h"
 
 int main(int argc, char* argv[])
@@ -19,10 +19,8 @@ int main(int argc, char* argv[])
   // convert input to double
   const double inputValue = std::stod(argv[1]);
 
-  // TODO 6: Replace sqrt with mathfunctions::sqrt
-
   // calculate square root
-  const double outputValue = sqrt(inputValue);
+  const double outputValue = mathfunctions::sqrt(inputValue);
   std::cout << "The square root of " << inputValue << " is " << outputValue
             << std::endl;
   return 0;