4 files changed, 16 insertions, 60 deletions
diff --git a/Help/guide/tutorial/Step7/CMakeLists.txt b/Help/guide/tutorial/Step7/CMakeLists.txt
index 3ac5cd6..d26a90c 100644
--- a/Help/guide/tutorial/Step7/CMakeLists.txt
+++ b/Help/guide/tutorial/Step7/CMakeLists.txt
@@ -1,11 +1,20 @@
-cmake_minimum_required(VERSION 3.10)
+cmake_minimum_required(VERSION 3.15)
 
 # set the project name and version
 project(Tutorial VERSION 1.0)
 
 # specify the C++ standard
-set(CMAKE_CXX_STANDARD 11)
-set(CMAKE_CXX_STANDARD_REQUIRED True)
+add_library(tutorial_compiler_flags INTERFACE)
+target_compile_features(tutorial_compiler_flags INTERFACE cxx_std_11)
+
+# add compiler warning flags just when building this project via
+# the BUILD_INTERFACE genex
+set(gcc_like_cxx "$<COMPILE_LANG_AND_ID:CXX,ARMClang,AppleClang,Clang,GNU,LCC>")
+set(msvc_cxx "$<COMPILE_LANG_AND_ID:CXX,MSVC>")
+target_compile_options(tutorial_compiler_flags INTERFACE
+  "$<${gcc_like_cxx}:$<BUILD_INTERFACE:-Wall;-Wextra;-Wshadow;-Wformat=2;-Wunused>>"
+  "$<${msvc_cxx}:$<BUILD_INTERFACE:-W3>>"
+)
 
 # should we use our own math functions
 option(USE_MYMATH "Use tutorial provided math implementation" ON)
@@ -22,7 +31,7 @@ endif()
 
 # add the executable
 add_executable(Tutorial tutorial.cxx)
-target_link_libraries(Tutorial PUBLIC ${EXTRA_LIBS})
+target_link_libraries(Tutorial PUBLIC ${EXTRA_LIBS} tutorial_compiler_flags)
 
 # add the binary tree to the search path for include files
 # so that we will find TutorialConfig.h
diff --git a/Help/guide/tutorial/Step7/MathFunctions/CMakeLists.txt b/Help/guide/tutorial/Step7/MathFunctions/CMakeLists.txt
index 42e098a..226099a 100644
--- a/Help/guide/tutorial/Step7/MathFunctions/CMakeLists.txt
+++ b/Help/guide/tutorial/Step7/MathFunctions/CMakeLists.txt
@@ -6,29 +6,9 @@ target_include_directories(MathFunctions
           INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}
           )
 
-# does this system provide the log and exp functions?
-include(CheckCXXSourceCompiles)
-check_cxx_source_compiles("
-  #include <cmath>
-  int main() {
-    std::log(1.0);
-    return 0;
-  }
-" HAVE_LOG)
-check_cxx_source_compiles("
-  #include <cmath>
-  int main() {
-    std::exp(1.0);
-    return 0;
-  }
-" HAVE_EXP)
-
-# add compile definitions
-if(HAVE_LOG AND HAVE_EXP)
-  target_compile_definitions(MathFunctions
-                             PRIVATE "HAVE_LOG" "HAVE_EXP")
-endif()
+target_link_libraries(MathFunctions tutorial_compiler_flags)
 
 # install rules
-install(TARGETS MathFunctions DESTINATION lib)
+set(installable_libs MathFunctions tutorial_compiler_flags)
+install(TARGETS ${installable_libs} DESTINATION lib)
 install(FILES MathFunctions.h DESTINATION include)
diff --git a/Help/guide/tutorial/Step7/MathFunctions/MakeTable.cxx b/Help/guide/tutorial/Step7/MathFunctions/MakeTable.cxx
deleted file mode 100644
index ee58556..0000000
--- a/Help/guide/tutorial/Step7/MathFunctions/MakeTable.cxx
+++ /dev/null
@@ -1,25 +0,0 @@
-// A simple program that builds a sqrt table
-#include <cmath>
-#include <fstream>
-#include <iostream>
-
-int main(int argc, char* argv[])
-{
-  // make sure we have enough arguments
-  if (argc < 2) {
-    return 1;
-  }
-
-  std::ofstream fout(argv[1], std::ios_base::out);
-  const bool fileOpen = fout.is_open();
-  if (fileOpen) {
-    fout << "double sqrtTable[] = {" << std::endl;
-    for (int i = 0; i < 10; ++i) {
-      fout << sqrt(static_cast<double>(i)) << "," << std::endl;
-    }
-    // close the table with a zero
-    fout << "0};" << std::endl;
-    fout.close();
-  }
-  return fileOpen ? 0 : 1; // return 0 if wrote the file
-}
diff --git a/Help/guide/tutorial/Step7/MathFunctions/mysqrt.cxx b/Help/guide/tutorial/Step7/MathFunctions/mysqrt.cxx
index 7eecd26..abe767d 100644
--- a/Help/guide/tutorial/Step7/MathFunctions/mysqrt.cxx
+++ b/Help/guide/tutorial/Step7/MathFunctions/mysqrt.cxx
@@ -1,4 +1,3 @@
-#include <cmath>
 #include <iostream>
 
 #include "MathFunctions.h"
@@ -10,12 +9,6 @@ double mysqrt(double x)
     return 0;
   }
 
-  // if we have both log and exp then use them
-#if defined(HAVE_LOG) && defined(HAVE_EXP)
-  double result = std::exp(std::log(x) * 0.5);
-  std::cout << "Computing sqrt of " << x << " to be " << result
-            << " using log and exp" << std::endl;
-#else
   double result = x;
 
   // do ten iterations
@@ -27,6 +20,5 @@ double mysqrt(double x)
     result = result + 0.5 * delta / result;
     std::cout << "Computing sqrt of " << x << " to be " << result << std::endl;
   }
-#endif
   return result;
 }