Merge topic 'tutorial-cmath' into release-3.23

5c84eca210 Tutorial: Simplify logic checking for cmath functions

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: buildbot <buildbot@kitware.com>
Merge-request: !7314

1 files changed, 3 insertions, 5 deletions

diff --git a/Help/guide/tutorial/Adding System Introspection.rst b/Help/guide/tutorial/Adding System Introspection.rst
index e149110..8db0cb8 100644
--- a/Help/guide/tutorial/Adding System Introspection.rst
+++ b/Help/guide/tutorial/Adding System Introspection.rst
@@ -9,17 +9,15 @@ tutorial assume that they are not common.
 
 If the platform has ``log`` and ``exp`` then we will use them to compute the
 square root in the ``mysqrt`` function. We first test for the availability of
-these functions using the :module:`CheckSymbolExists` module in
-``MathFunctions/CMakeLists.txt``. On some platforms, we will need to link to
-the ``m`` library. If ``log`` and ``exp`` are not initially found, require the
-``m`` library and try again.
+these functions using the :module:`CheckCXXSourceCompiles` module in
+``MathFunctions/CMakeLists.txt``.
 
 Add the checks for ``log`` and ``exp`` to ``MathFunctions/CMakeLists.txt``,
 after the call to :command:`target_include_directories`:
 
 .. literalinclude:: Step6/MathFunctions/CMakeLists.txt
   :caption: MathFunctions/CMakeLists.txt
-  :name: MathFunctions/CMakeLists.txt-check_symbol_exists
+  :name: MathFunctions/CMakeLists.txt-check_cxx_source_compiles
   :language: cmake
   :start-after: # to find MathFunctions.h, while we don't.
   :end-before: # add compile definitions