Excerise 1 - Step 2

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;