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-rw-r--r--Help/variable/CMAKE_CFG_INTDIR.rst2
-rw-r--r--Help/variable/CMAKE_FOLDER.rst7
-rw-r--r--Help/variable/CMAKE_INSTALL_PREFIX.rst16
-rw-r--r--Help/variable/CMAKE_LANG_CLANG_TIDY.rst11
-rw-r--r--Help/variable/CMAKE_LANG_FLAGS.rst11
-rw-r--r--Help/variable/CMAKE_LANG_IMPLICIT_LINK_DIRECTORIES.rst15
-rw-r--r--Help/variable/CMAKE_MINIMUM_REQUIRED_VERSION.rst6
-rw-r--r--Help/variable/CMAKE_MODULE_PATH.rst2
-rw-r--r--Help/variable/CMAKE_PROJECT_DESCRIPTION.rst34
-rw-r--r--Help/variable/CMAKE_PROJECT_HOMEPAGE_URL.rst35
-rw-r--r--Help/variable/CMAKE_PROJECT_NAME.rst34
-rw-r--r--Help/variable/CMAKE_SUPPRESS_REGENERATION.rst11
-rw-r--r--Help/variable/CMAKE_VS_DEVENV_COMMAND.rst2
-rw-r--r--Help/variable/CMAKE_VS_INTEL_Fortran_PROJECT_VERSION.rst2
-rw-r--r--Help/variable/CMAKE_VS_SDK_EXCLUDE_DIRECTORIES.rst4
-rw-r--r--Help/variable/CMAKE_VS_SDK_EXECUTABLE_DIRECTORIES.rst4
-rw-r--r--Help/variable/CMAKE_VS_SDK_INCLUDE_DIRECTORIES.rst4
-rw-r--r--Help/variable/CMAKE_VS_SDK_LIBRARY_DIRECTORIES.rst4
-rw-r--r--Help/variable/CMAKE_VS_SDK_LIBRARY_WINRT_DIRECTORIES.rst5
-rw-r--r--Help/variable/CMAKE_VS_SDK_REFERENCE_DIRECTORIES.rst4
-rw-r--r--Help/variable/CMAKE_VS_SDK_SOURCE_DIRECTORIES.rst4
-rw-r--r--Help/variable/MSVC_TOOLSET_VERSION.rst21
-rw-r--r--Help/variable/MSVC_VERSION.rst3
-rw-r--r--Help/variable/PROJECT-NAME_DESCRIPTION.rst5
-rw-r--r--Help/variable/PROJECT-NAME_HOMEPAGE_URL.rst5
-rw-r--r--Help/variable/PROJECT_DESCRIPTION.rst5
-rw-r--r--Help/variable/PROJECT_HOMEPAGE_URL.rst9
-rw-r--r--Help/variable/PROJECT_NAME.rst4
28 files changed, 229 insertions, 40 deletions
diff --git a/Help/variable/CMAKE_CFG_INTDIR.rst b/Help/variable/CMAKE_CFG_INTDIR.rst
index c36599a..af82f75 100644
--- a/Help/variable/CMAKE_CFG_INTDIR.rst
+++ b/Help/variable/CMAKE_CFG_INTDIR.rst
@@ -12,7 +12,7 @@ Example values:
::
- $(ConfigurationName) = Visual Studio 8, 9
+ $(ConfigurationName) = Visual Studio 9
$(Configuration) = Visual Studio 10
$(CONFIGURATION) = Xcode
. = Make-based tools
diff --git a/Help/variable/CMAKE_FOLDER.rst b/Help/variable/CMAKE_FOLDER.rst
new file mode 100644
index 0000000..50a2b88
--- /dev/null
+++ b/Help/variable/CMAKE_FOLDER.rst
@@ -0,0 +1,7 @@
+CMAKE_FOLDER
+------------
+
+Set the folder name. Use to organize targets in an IDE.
+
+This variable is used to initialize the :prop_tgt:`FOLDER` property on all the
+targets. See that target property for additional information.
diff --git a/Help/variable/CMAKE_INSTALL_PREFIX.rst b/Help/variable/CMAKE_INSTALL_PREFIX.rst
index 7bd87d6..02ba645 100644
--- a/Help/variable/CMAKE_INSTALL_PREFIX.rst
+++ b/Help/variable/CMAKE_INSTALL_PREFIX.rst
@@ -10,21 +10,7 @@ See :variable:`CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT` for how a
project might choose its own default.
On UNIX one can use the ``DESTDIR`` mechanism in order to relocate the
-whole installation. ``DESTDIR`` means DESTination DIRectory. It is
-commonly used by makefile users in order to install software at
-non-default location. It is usually invoked like this:
-
-::
-
- make DESTDIR=/home/john install
-
-which will install the concerned software using the installation
-prefix, e.g. ``/usr/local`` prepended with the ``DESTDIR`` value which
-finally gives ``/home/john/usr/local``.
-
-WARNING: ``DESTDIR`` may not be used on Windows because installation
-prefix usually contains a drive letter like in ``C:/Program Files``
-which cannot be prepended with some other prefix.
+whole installation. See :envvar:`DESTDIR` for more information.
The installation prefix is also added to :variable:`CMAKE_SYSTEM_PREFIX_PATH`
so that :command:`find_package`, :command:`find_program`,
diff --git a/Help/variable/CMAKE_LANG_CLANG_TIDY.rst b/Help/variable/CMAKE_LANG_CLANG_TIDY.rst
index 492c12c..d1fccbb 100644
--- a/Help/variable/CMAKE_LANG_CLANG_TIDY.rst
+++ b/Help/variable/CMAKE_LANG_CLANG_TIDY.rst
@@ -1,6 +1,13 @@
CMAKE_<LANG>_CLANG_TIDY
-----------------------
-Default value for :prop_tgt:`<LANG>_CLANG_TIDY` target property.
+Default value for :prop_tgt:`<LANG>_CLANG_TIDY` target property
+when ``<LANG>`` is ``C`` or ``CXX``.
+
This variable is used to initialize the property on each target as it is
-created. This is done only when ``<LANG>`` is ``C`` or ``CXX``.
+created. For example:
+
+.. code-block:: cmake
+
+ set(CMAKE_CXX_CLANG_TIDY clang-tidy checks=-*,readability-*)
+ add_executable(foo foo.cxx)
diff --git a/Help/variable/CMAKE_LANG_FLAGS.rst b/Help/variable/CMAKE_LANG_FLAGS.rst
index c57d92c..14b2694 100644
--- a/Help/variable/CMAKE_LANG_FLAGS.rst
+++ b/Help/variable/CMAKE_LANG_FLAGS.rst
@@ -4,3 +4,14 @@ CMAKE_<LANG>_FLAGS
Flags for all build types.
``<LANG>`` flags used regardless of the value of :variable:`CMAKE_BUILD_TYPE`.
+
+This is initialized for each language from environment variables:
+
+* ``CMAKE_C_FLAGS``:
+ Initialized by the :envvar:`CFLAGS` environment variable.
+* ``CMAKE_CXX_FLAGS``:
+ Initialized by the :envvar:`CXXFLAGS` environment variable.
+* ``CMAKE_CUDA_FLAGS``:
+ Initialized by the :envvar:`CUDAFLAGS` environment variable.
+* ``CMAKE_Fortran_FLAGS``:
+ Initialized by the :envvar:`FFLAGS` environment variable.
diff --git a/Help/variable/CMAKE_LANG_IMPLICIT_LINK_DIRECTORIES.rst b/Help/variable/CMAKE_LANG_IMPLICIT_LINK_DIRECTORIES.rst
index a0bd830..e9e04be 100644
--- a/Help/variable/CMAKE_LANG_IMPLICIT_LINK_DIRECTORIES.rst
+++ b/Help/variable/CMAKE_LANG_IMPLICIT_LINK_DIRECTORIES.rst
@@ -9,9 +9,12 @@ These paths are implicit linker search directories for the compiler's
language. CMake automatically detects these directories for each
language and reports the results in this variable.
-When a library in one of these directories is given by full path to
-:command:`target_link_libraries` CMake will generate the ``-l<name>`` form on
-link lines to ensure the linker searches its implicit directories for the
-library. Note that some toolchains read implicit directories from an
-environment variable such as ``LIBRARY_PATH`` so keep its value consistent
-when operating in a given build tree.
+Some toolchains read implicit directories from an environment variable such as
+``LIBRARY_PATH``. If using such an environment variable, keep its value
+consistent when operating in a given build tree because CMake saves the value
+detected when first creating a build tree.
+
+If policy :policy:`CMP0060` is not set to ``NEW``, then when a library in one
+of these directories is given by full path to :command:`target_link_libraries`
+CMake will generate the ``-l<name>`` form on link lines for historical
+purposes.
diff --git a/Help/variable/CMAKE_MINIMUM_REQUIRED_VERSION.rst b/Help/variable/CMAKE_MINIMUM_REQUIRED_VERSION.rst
index 5a51634..f466468 100644
--- a/Help/variable/CMAKE_MINIMUM_REQUIRED_VERSION.rst
+++ b/Help/variable/CMAKE_MINIMUM_REQUIRED_VERSION.rst
@@ -1,7 +1,5 @@
CMAKE_MINIMUM_REQUIRED_VERSION
------------------------------
-Version specified to :command:`cmake_minimum_required` command
-
-Variable containing the ``VERSION`` component specified in the
-:command:`cmake_minimum_required` command.
+The ``<min>`` version of CMake given to the most recent call to the
+:command:`cmake_minimum_required(VERSION)` command.
diff --git a/Help/variable/CMAKE_MODULE_PATH.rst b/Help/variable/CMAKE_MODULE_PATH.rst
index 5ea7cbb..6490054 100644
--- a/Help/variable/CMAKE_MODULE_PATH.rst
+++ b/Help/variable/CMAKE_MODULE_PATH.rst
@@ -2,6 +2,6 @@ CMAKE_MODULE_PATH
-----------------
:ref:`;-list <CMake Language Lists>` of directories specifying a search path
-for CMake modules to be loaded by the the :command:`include` or
+for CMake modules to be loaded by the :command:`include` or
:command:`find_package` commands before checking the default modules that come
with CMake. By default it is empty, it is intended to be set by the project.
diff --git a/Help/variable/CMAKE_PROJECT_DESCRIPTION.rst b/Help/variable/CMAKE_PROJECT_DESCRIPTION.rst
index f1911ec..51b0592 100644
--- a/Help/variable/CMAKE_PROJECT_DESCRIPTION.rst
+++ b/Help/variable/CMAKE_PROJECT_DESCRIPTION.rst
@@ -1,7 +1,35 @@
CMAKE_PROJECT_DESCRIPTION
-------------------------
-The description of the current project.
+The description of the top level project.
-This specifies description of the current project from the closest inherited
-:command:`project` command.
+This variable holds the description of the project as specified in the top
+level CMakeLists.txt file by a :command:`project` command. In the event that
+the top level CMakeLists.txt contains multiple :command:`project` calls,
+the most recently called one from that top level CMakeLists.txt will determine
+the value that ``CMAKE_PROJECT_DESCRIPTION`` contains. For example, consider
+the following top level CMakeLists.txt:
+
+.. code-block:: cmake
+
+ cmake_minimum_required(VERSION 3.0)
+ project(First DESCRIPTION "I am First")
+ project(Second DESCRIPTION "I am Second")
+ add_subdirectory(sub)
+ project(Third DESCRIPTION "I am Third")
+
+And ``sub/CMakeLists.txt`` with the following contents:
+
+.. code-block:: cmake
+
+ project(SubProj DESCRIPTION "I am SubProj")
+ message("CMAKE_PROJECT_DESCRIPTION = ${CMAKE_PROJECT_DESCRIPTION}")
+
+The most recently seen :command:`project` command from the top level
+CMakeLists.txt would be ``project(Second ...)``, so this will print::
+
+ CMAKE_PROJECT_DESCRIPTION = I am Second
+
+To obtain the description from the most recent call to :command:`project` in
+the current directory scope or above, see the :variable:`PROJECT_DESCRIPTION`
+variable.
diff --git a/Help/variable/CMAKE_PROJECT_HOMEPAGE_URL.rst b/Help/variable/CMAKE_PROJECT_HOMEPAGE_URL.rst
new file mode 100644
index 0000000..ee0bf7c
--- /dev/null
+++ b/Help/variable/CMAKE_PROJECT_HOMEPAGE_URL.rst
@@ -0,0 +1,35 @@
+CMAKE_PROJECT_HOMEPAGE_URL
+--------------------------
+
+The homepage URL of the top level project.
+
+This variable holds the homepage URL of the project as specified in the top
+level CMakeLists.txt file by a :command:`project` command. In the event that
+the top level CMakeLists.txt contains multiple :command:`project` calls,
+the most recently called one from that top level CMakeLists.txt will determine
+the value that ``CMAKE_PROJECT_HOMEPAGE_URL`` contains. For example, consider
+the following top level CMakeLists.txt:
+
+.. code-block:: cmake
+
+ cmake_minimum_required(VERSION 3.0)
+ project(First HOMEPAGE_URL "http://first.example.com")
+ project(Second HOMEPAGE_URL "http://second.example.com")
+ add_subdirectory(sub)
+ project(Third HOMEPAGE_URL "http://third.example.com")
+
+And ``sub/CMakeLists.txt`` with the following contents:
+
+.. code-block:: cmake
+
+ project(SubProj HOMEPAGE_URL "http://subproj.example.com")
+ message("CMAKE_PROJECT_HOMEPAGE_URL = ${CMAKE_PROJECT_HOMEPAGE_URL}")
+
+The most recently seen :command:`project` command from the top level
+CMakeLists.txt would be ``project(Second ...)``, so this will print::
+
+ CMAKE_PROJECT_HOMEPAGE_URL = http://second.example.com
+
+To obtain the homepage URL from the most recent call to :command:`project` in
+the current directory scope or above, see the :variable:`PROJECT_HOMEPAGE_URL`
+variable.
diff --git a/Help/variable/CMAKE_PROJECT_NAME.rst b/Help/variable/CMAKE_PROJECT_NAME.rst
index 431e9f3..94b8dba 100644
--- a/Help/variable/CMAKE_PROJECT_NAME.rst
+++ b/Help/variable/CMAKE_PROJECT_NAME.rst
@@ -1,7 +1,35 @@
CMAKE_PROJECT_NAME
------------------
-The name of the current project.
+The name of the top level project.
-This specifies name of the current project from the closest inherited
-:command:`project` command.
+This variable holds the name of the project as specified in the top
+level CMakeLists.txt file by a :command:`project` command. In the event that
+the top level CMakeLists.txt contains multiple :command:`project` calls,
+the most recently called one from that top level CMakeLists.txt will determine
+the name that ``CMAKE_PROJECT_NAME`` contains. For example, consider
+the following top level CMakeLists.txt:
+
+.. code-block:: cmake
+
+ cmake_minimum_required(VERSION 3.0)
+ project(First)
+ project(Second)
+ add_subdirectory(sub)
+ project(Third)
+
+And ``sub/CMakeLists.txt`` with the following contents:
+
+.. code-block:: cmake
+
+ project(SubProj)
+ message("CMAKE_PROJECT_NAME = ${CMAKE_PROJECT_NAME}")
+
+The most recently seen :command:`project` command from the top level
+CMakeLists.txt would be ``project(Second)``, so this will print::
+
+ CMAKE_PROJECT_NAME = Second
+
+To obtain the name from the most recent call to :command:`project` in
+the current directory scope or above, see the :variable:`PROJECT_NAME`
+variable.
diff --git a/Help/variable/CMAKE_SUPPRESS_REGENERATION.rst b/Help/variable/CMAKE_SUPPRESS_REGENERATION.rst
new file mode 100644
index 0000000..ed47e1a
--- /dev/null
+++ b/Help/variable/CMAKE_SUPPRESS_REGENERATION.rst
@@ -0,0 +1,11 @@
+CMAKE_SUPPRESS_REGENERATION
+---------------------------
+
+If CMAKE_SUPPRESS_REGENERATION is ``OFF``, which is default, then CMake adds a
+special target on which all other targets depend that checks the build system
+and optionally re-runs CMake to regenerate the build system when the target
+specification source changes.
+
+If this variable evaluates to ``ON`` at the end of the top-level
+``CMakeLists.txt`` file, CMake will not add the regeneration target to the
+build system or perform any build system checks.
diff --git a/Help/variable/CMAKE_VS_DEVENV_COMMAND.rst b/Help/variable/CMAKE_VS_DEVENV_COMMAND.rst
index 51b42dd..f109a9e 100644
--- a/Help/variable/CMAKE_VS_DEVENV_COMMAND.rst
+++ b/Help/variable/CMAKE_VS_DEVENV_COMMAND.rst
@@ -1,7 +1,7 @@
CMAKE_VS_DEVENV_COMMAND
-----------------------
-The generators for :generator:`Visual Studio 8 2005` and above set this
+The generators for :generator:`Visual Studio 9 2008` and above set this
variable to the ``devenv.com`` command installed with the corresponding
Visual Studio version. Note that this variable may be empty on
Visual Studio Express editions because they do not provide this tool.
diff --git a/Help/variable/CMAKE_VS_INTEL_Fortran_PROJECT_VERSION.rst b/Help/variable/CMAKE_VS_INTEL_Fortran_PROJECT_VERSION.rst
index 6d196f9..ceedf28 100644
--- a/Help/variable/CMAKE_VS_INTEL_Fortran_PROJECT_VERSION.rst
+++ b/Help/variable/CMAKE_VS_INTEL_Fortran_PROJECT_VERSION.rst
@@ -1,7 +1,7 @@
CMAKE_VS_INTEL_Fortran_PROJECT_VERSION
--------------------------------------
-When generating for :generator:`Visual Studio 8 2005` or greater with the Intel
+When generating for :generator:`Visual Studio 9 2008` or greater with the Intel
Fortran plugin installed, this specifies the ``.vfproj`` project file format
version. This is intended for internal use by CMake and should not be
used by project code.
diff --git a/Help/variable/CMAKE_VS_SDK_EXCLUDE_DIRECTORIES.rst b/Help/variable/CMAKE_VS_SDK_EXCLUDE_DIRECTORIES.rst
new file mode 100644
index 0000000..36c4dcc
--- /dev/null
+++ b/Help/variable/CMAKE_VS_SDK_EXCLUDE_DIRECTORIES.rst
@@ -0,0 +1,4 @@
+CMAKE_VS_SDK_EXCLUDE_DIRECTORIES
+--------------------------------
+
+This variable allows to override Visual Studio default Exclude Directories.
diff --git a/Help/variable/CMAKE_VS_SDK_EXECUTABLE_DIRECTORIES.rst b/Help/variable/CMAKE_VS_SDK_EXECUTABLE_DIRECTORIES.rst
new file mode 100644
index 0000000..3ec755b
--- /dev/null
+++ b/Help/variable/CMAKE_VS_SDK_EXECUTABLE_DIRECTORIES.rst
@@ -0,0 +1,4 @@
+CMAKE_VS_SDK_EXECUTABLE_DIRECTORIES
+-----------------------------------
+
+This variable allows to override Visual Studio default Executable Directories.
diff --git a/Help/variable/CMAKE_VS_SDK_INCLUDE_DIRECTORIES.rst b/Help/variable/CMAKE_VS_SDK_INCLUDE_DIRECTORIES.rst
new file mode 100644
index 0000000..da10bde
--- /dev/null
+++ b/Help/variable/CMAKE_VS_SDK_INCLUDE_DIRECTORIES.rst
@@ -0,0 +1,4 @@
+CMAKE_VS_SDK_INCLUDE_DIRECTORIES
+--------------------------------
+
+This variable allows to override Visual Studio default Include Directories.
diff --git a/Help/variable/CMAKE_VS_SDK_LIBRARY_DIRECTORIES.rst b/Help/variable/CMAKE_VS_SDK_LIBRARY_DIRECTORIES.rst
new file mode 100644
index 0000000..b33754a
--- /dev/null
+++ b/Help/variable/CMAKE_VS_SDK_LIBRARY_DIRECTORIES.rst
@@ -0,0 +1,4 @@
+CMAKE_VS_SDK_LIBRARY_DIRECTORIES
+--------------------------------
+
+This variable allows to override Visual Studio default Library Directories.
diff --git a/Help/variable/CMAKE_VS_SDK_LIBRARY_WINRT_DIRECTORIES.rst b/Help/variable/CMAKE_VS_SDK_LIBRARY_WINRT_DIRECTORIES.rst
new file mode 100644
index 0000000..b022215
--- /dev/null
+++ b/Help/variable/CMAKE_VS_SDK_LIBRARY_WINRT_DIRECTORIES.rst
@@ -0,0 +1,5 @@
+CMAKE_VS_SDK_LIBRARY_WINRT_DIRECTORIES
+--------------------------------------
+
+This variable allows to override Visual Studio default Library WinRT
+Directories.
diff --git a/Help/variable/CMAKE_VS_SDK_REFERENCE_DIRECTORIES.rst b/Help/variable/CMAKE_VS_SDK_REFERENCE_DIRECTORIES.rst
new file mode 100644
index 0000000..c03f0ae
--- /dev/null
+++ b/Help/variable/CMAKE_VS_SDK_REFERENCE_DIRECTORIES.rst
@@ -0,0 +1,4 @@
+CMAKE_VS_SDK_REFERENCE_DIRECTORIES
+----------------------------------
+
+This variable allows to override Visual Studio default Reference Directories.
diff --git a/Help/variable/CMAKE_VS_SDK_SOURCE_DIRECTORIES.rst b/Help/variable/CMAKE_VS_SDK_SOURCE_DIRECTORIES.rst
new file mode 100644
index 0000000..0c73f06
--- /dev/null
+++ b/Help/variable/CMAKE_VS_SDK_SOURCE_DIRECTORIES.rst
@@ -0,0 +1,4 @@
+CMAKE_VS_SDK_SOURCE_DIRECTORIES
+-------------------------------
+
+This variable allows to override Visual Studio default Source Directories.
diff --git a/Help/variable/MSVC_TOOLSET_VERSION.rst b/Help/variable/MSVC_TOOLSET_VERSION.rst
new file mode 100644
index 0000000..77e1ea9
--- /dev/null
+++ b/Help/variable/MSVC_TOOLSET_VERSION.rst
@@ -0,0 +1,21 @@
+MSVC_TOOLSET_VERSION
+--------------------
+
+The toolset version of Microsoft Visual C/C++ being used if any.
+If MSVC-like is being used, this variable is set based on the version
+of the compiler as given by the :variable:`MSVC_VERSION` variable.
+
+Known toolset version numbers are::
+
+ 80 = VS 2005 (8.0)
+ 90 = VS 2008 (9.0)
+ 100 = VS 2010 (10.0)
+ 110 = VS 2012 (11.0)
+ 120 = VS 2013 (12.0)
+ 140 = VS 2015 (14.0)
+ 141 = VS 2017 (15.0)
+
+Compiler versions newer than those known to CMake will be reported
+as the latest known toolset version.
+
+See also the :variable:`MSVC_VERSION` variable.
diff --git a/Help/variable/MSVC_VERSION.rst b/Help/variable/MSVC_VERSION.rst
index 5f70c02..4ef43d8 100644
--- a/Help/variable/MSVC_VERSION.rst
+++ b/Help/variable/MSVC_VERSION.rst
@@ -19,4 +19,5 @@ Known version numbers are::
1900 = VS 14.0 (v140 toolset)
1910-1919 = VS 15.0 (v141 toolset)
-See also the :variable:`CMAKE_<LANG>_COMPILER_VERSION` variable.
+See also the :variable:`CMAKE_<LANG>_COMPILER_VERSION` and
+:variable:`MSVC_TOOLSET_VERSION` variable.
diff --git a/Help/variable/PROJECT-NAME_DESCRIPTION.rst b/Help/variable/PROJECT-NAME_DESCRIPTION.rst
new file mode 100644
index 0000000..2b88b1a
--- /dev/null
+++ b/Help/variable/PROJECT-NAME_DESCRIPTION.rst
@@ -0,0 +1,5 @@
+<PROJECT-NAME>_DESCRIPTION
+--------------------------
+
+Value given to the ``DESCRIPTION`` option of the most recent call to the
+:command:`project` command with project name ``<PROJECT-NAME>``, if any.
diff --git a/Help/variable/PROJECT-NAME_HOMEPAGE_URL.rst b/Help/variable/PROJECT-NAME_HOMEPAGE_URL.rst
new file mode 100644
index 0000000..22cc304
--- /dev/null
+++ b/Help/variable/PROJECT-NAME_HOMEPAGE_URL.rst
@@ -0,0 +1,5 @@
+<PROJECT-NAME>_HOMEPAGE_URL
+---------------------------
+
+Value given to the ``HOMEPAGE_URL`` option of the most recent call to the
+:command:`project` command with project name ``<PROJECT-NAME>``, if any.
diff --git a/Help/variable/PROJECT_DESCRIPTION.rst b/Help/variable/PROJECT_DESCRIPTION.rst
index 05ede8f..2833e11 100644
--- a/Help/variable/PROJECT_DESCRIPTION.rst
+++ b/Help/variable/PROJECT_DESCRIPTION.rst
@@ -3,4 +3,7 @@ PROJECT_DESCRIPTION
Short project description given to the project command.
-This is the description given to the most recent :command:`project` command.
+This is the description given to the most recently called :command:`project`
+command in the current directory scope or above. To obtain the description
+of the top level project, see the :variable:`CMAKE_PROJECT_DESCRIPTION`
+variable.
diff --git a/Help/variable/PROJECT_HOMEPAGE_URL.rst b/Help/variable/PROJECT_HOMEPAGE_URL.rst
new file mode 100644
index 0000000..754c9e8
--- /dev/null
+++ b/Help/variable/PROJECT_HOMEPAGE_URL.rst
@@ -0,0 +1,9 @@
+PROJECT_HOMEPAGE_URL
+--------------------
+
+The homepage URL of the project.
+
+This is the homepage URL given to the most recently called :command:`project`
+command in the current directory scope or above. To obtain the homepage URL
+of the top level project, see the :variable:`CMAKE_PROJECT_HOMEPAGE_URL`
+variable.
diff --git a/Help/variable/PROJECT_NAME.rst b/Help/variable/PROJECT_NAME.rst
index 61aa8bc..672680a 100644
--- a/Help/variable/PROJECT_NAME.rst
+++ b/Help/variable/PROJECT_NAME.rst
@@ -3,4 +3,6 @@ PROJECT_NAME
Name of the project given to the project command.
-This is the name given to the most recent :command:`project` command.
+This is the name given to the most recently called :command:`project`
+command in the current directory scope or above. To obtain the name of
+the top level project, see the :variable:`CMAKE_PROJECT_NAME` variable.