diff --git a/Help/command/find_package.rst b/Help/command/find_package.rst
index b486b79..3ad571c 100644
--- a/Help/command/find_package.rst
+++ b/Help/command/find_package.rst
@@ -1,7 +1,16 @@
 find_package
 ------------
 
-Load settings for an external project.
+.. only:: html
+
+   .. contents::
+
+Find an external project, and load its settings.
+
+.. _`basic signature`:
+
+Basic Signature and Module Mode
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 ::
 
@@ -15,7 +24,6 @@
 package is found package-specific information is provided through
 variables and :ref:`Imported Targets` documented by the package itself.  The
 ``QUIET`` option disables messages if the package cannot be found.  The
-``MODULE`` option disables the second signature documented below.  The
 ``REQUIRED`` option stops processing with an error message if the package
 cannot be found.
 
@@ -33,25 +41,32 @@
 inside a find-module, the corresponding arguments are forwarded
 automatically from the outer call (including the ``EXACT`` flag for
 ``[version]``).  Version support is currently provided only on a
-package-by-package basis (details below).
+package-by-package basis (see the `Version Selection`_ section below).
 
-User code should generally look for packages using the above simple
-signature.  The remainder of this command documentation specifies the
+See the :command:`cmake_policy` command documentation for discussion
+of the ``NO_POLICY_SCOPE`` option.
+
+The command has two modes by which it searches for packages: "Module"
+mode and "Config" mode.  The above signature selects Module mode.
+If no module is found the command falls back to Config mode, described
+below. This fall back is disabled if the ``MODULE`` option is given.
+
+In Module mode, CMake searches for a file called ``Find<PackageName>.cmake``
+in the :variable:`CMAKE_MODULE_PATH` followed by the CMake installation.
+If the file is found, it is read and processed by CMake.  It is responsible
+for finding the package, checking the version, and producing any needed
+messages.  Some find-modules provide limited or no support for versioning;
+check the module documentation.
+
+Full Signature and Config Mode
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+User code should generally look for packages using the above `basic
+signature`_.  The remainder of this command documentation specifies the
 full command signature and details of the search process.  Project
 maintainers wishing to provide a package to be found by this command
 are encouraged to read on.
 
-The command has two modes by which it searches for packages: "Module"
-mode and "Config" mode.  Module mode is available when the command is
-invoked with the above reduced signature.  CMake searches for a file
-called ``Find<PackageName>.cmake`` in the :variable:`CMAKE_MODULE_PATH`
-followed by the CMake installation.  If the file is found, it is read
-and processed by CMake.  It is responsible for finding the package,
-checking the version, and producing any needed messages.  Many
-find-modules provide limited or no support for versioning; check
-the module documentation.  If no module is found and the ``MODULE``
-option is not given the command proceeds to Config mode.
-
 The complete Config mode command signature is::
 
   find_package(<PackageName> [version] [EXACT] [QUIET]
@@ -76,12 +91,12 @@
                 ONLY_CMAKE_FIND_ROOT_PATH |
                 NO_CMAKE_FIND_ROOT_PATH])
 
-The ``CONFIG`` option may be used to skip Module mode explicitly and
-switch to Config mode.  It is synonymous to using ``NO_MODULE``.  Config
-mode is also implied by use of options not specified in the reduced
-signature.
+The ``CONFIG`` option, the synonymous ``NO_MODULE`` option, or the use
+of options not specified in the `basic signature`_ all enforce pure Config
+mode.  In pure Config mode, the command skips Module mode search and
+proceeds at once with Config mode search.
 
-Config mode attempts to locate a configuration file provided by the
+Config mode search attempts to locate a configuration file provided by the
 package to be found.  A cache entry called ``<PackageName>_DIR`` is created to
 hold the directory containing the file.  By default the command
 searches for a package with the name ``<PackageName>``.  If the ``NAMES`` option
@@ -107,6 +122,13 @@
 ``<PackageName>_DIR`` has been set to a directory not containing a
 configuration file CMake will ignore it and search from scratch.
 
+Package maintainers providing CMake package configuration files are
+encouraged to name and install them such that the `Search Procedure`_
+outlined below will find them without requiring use of additional options.
+
+Version Selection
+^^^^^^^^^^^^^^^^^
+
 When the ``[version]`` argument is given Config mode will only find a
 version of the package that claims compatibility with the requested
 version (format is ``major[.minor[.patch[.tweak]]]``).  If the ``EXACT``
@@ -187,17 +209,8 @@
 
 before calling ``find_package``.
 
-Config mode provides an elaborate interface and search procedure.
-Much of the interface is provided for completeness and for use
-internally by find-modules loaded by Module mode.  Most user code
-should simply call::
-
-  find_package(<PackageName> [major[.minor]] [EXACT] [REQUIRED|QUIET])
-
-in order to find a package.  Package maintainers providing CMake
-package configuration files are encouraged to name and install them
-such that the procedure outlined below will find them without
-requiring use of additional options.
+Search Procedure
+^^^^^^^^^^^^^^^^
 
 CMake constructs a set of possible installation prefixes for the
 package.  Under each prefix several directories are searched for a
@@ -339,6 +352,9 @@
 Every non-REQUIRED ``find_package`` call can be disabled by setting the
 :variable:`CMAKE_DISABLE_FIND_PACKAGE_<PackageName>` variable to ``TRUE``.
 
+Package File Interface Variables
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
 When loading a find module or package configuration file ``find_package``
 defines variables to provide information about the call arguments (and
 restores their original state before returning):
@@ -377,6 +393,3 @@
 for the package.  The package configuration file may set
 ``<PackageName>_FOUND`` to false to tell ``find_package`` that component
 requirements are not satisfied.
-
-See the :command:`cmake_policy` command documentation for discussion
-of the ``NO_POLICY_SCOPE`` option.
diff --git a/Help/command/list.rst b/Help/command/list.rst
index ad2c428..2357a9b 100644
--- a/Help/command/list.rst
+++ b/Help/command/list.rst
@@ -256,20 +256,24 @@
   list(SORT <list> [COMPARE <compare>] [CASE <case>] [ORDER <order>])
 
 Sorts the list in-place alphabetically.
-Use the option ``<compare>`` to select the compare type for sorting.
-The ``<compare>`` option may be one of:
+Use the ``COMPARE`` keyword to select the comparison method for sorting.
+The ``<compare>`` option should be one of:
 
-* ``STRING``: Sorts a list of strings alphabetically.
-* ``FILE_BASENAME``: Sort a list of pathnames of files by their basenames.
+* ``STRING``: Sorts a list of strings alphabetically.  This is the
+  default behavior if the ``COMPARE`` option is not given.
+* ``FILE_BASENAME``: Sorts a list of pathnames of files by their basenames.
 
-Use the option ``<case>`` to select a case sensitive or case insensitive sort mode.
-The ``<case>`` option may be one of:
+Use the ``CASE`` keyword to select a case sensitive or case insensitive
+sort mode.  The ``<case>`` option should be one of:
 
-* ``SENSITIVE``: Sorts the list alphabetically.
-* ``INSENSITIVE``: Sorts the list alphabetically in descending order.
+* ``SENSITIVE``: List items are sorted in a case-sensitive manner.  This is
+  the default behavior if the ``CASE`` option is not given.
+* ``INSENSITIVE``: List items are sorted case insensitively.  The order of
+  items which differ only by upper/lowercase is not specified.
 
-Use the option ``<order>`` to select a case sensitive or case insensitive sort mode.
-The ``<order>`` option may be one of:
+To control the sort order, the ``ORDER`` keyword can be given.
+The ``<order>`` option should be one of:
 
-* ``ASCENDING``: Sorts the list in ascending order.
+* ``ASCENDING``: Sorts the list in ascending order.  This is the default
+  behavior when the ``ORDER`` option is not given.
 * ``DESCENDING``: Sorts the list in descending order.
diff --git a/Help/command/project.rst b/Help/command/project.rst
index c1de057..bd8b4ef 100644
--- a/Help/command/project.rst
+++ b/Help/command/project.rst
@@ -44,6 +44,7 @@
 
 If the optional ``DESCRIPTION`` is given, then :variable:`PROJECT_DESCRIPTION`
 and :variable:`<PROJECT-NAME>_DESCRIPTION` will be set to its argument.
+These variables will be cleared if ``DESCRIPTION`` is not given.
 The description is expected to be a relatively short string, usually no more
 than a few words.
 
@@ -51,6 +52,7 @@
 :variable:`PROJECT_HOMEPAGE_URL` and :variable:`<PROJECT-NAME>_HOMEPAGE_URL`.
 When this option is given, the URL provided should be the canonical home for
 the project.
+These variables will be cleared if ``HOMEPAGE_URL`` is not given.
 
 Note that the description and homepage URL may be used as defaults for
 things like packaging meta-data, documentation, etc.
diff --git a/Help/command/string.rst b/Help/command/string.rst
index 29a153a..cc18069 100644
--- a/Help/command/string.rst
+++ b/Help/command/string.rst
@@ -121,6 +121,11 @@
   Matches at end of input
 ``.``
   Matches any single character
+``\<char>``
+  Matches the single character specified by ``<char>``.  Use this to
+  match special regex characters, e.g. ``\.`` for a literal ``.``
+  or ``\\`` for a literal backslash ``\``.  Escaping a non-special
+  character is unnecessary but allowed, e.g. ``\a`` matches ``a``.
 ``[ ]``
   Matches any character(s) inside the brackets
 ``[^ ]``
@@ -151,12 +156,9 @@
 expression ``^ab+d$`` matches ``abbd`` but not ``ababd``, and the regular
 expression ``^(ab|cd)$`` matches ``ab`` but not ``abd``.
 
-Backslash (``\``) characters in regular expressions are interpreted
-literally and do not escape anything or represent placeholders.
-However, CMake language :ref:`Escape Sequences` such as ``\t``,
-``\r``, ``\n``, and ``\\`` may be used to construct literal tabs,
-carriage returns, newlines, and backslashes (respectively) to pass
-in a regex.  For example:
+CMake language :ref:`Escape Sequences` such as ``\t``, ``\r``, ``\n``,
+and ``\\`` may be used to construct literal tabs, carriage returns,
+newlines, and backslashes (respectively) to pass in a regex.  For example:
 
 * The quoted argument ``"[ \t\r\n]"`` specifies a regex that matches
   any single whitespace character.
@@ -164,6 +166,11 @@
   a single forward slash ``/`` or backslash ``\``.
 * The quoted argument ``"[A-Za-z0-9_]"`` specifies a regex that matches
   any single "word" character in the C locale.
+* The quoted argument ``"\\(\\a\\+b\\)"`` specifies a regex that matches
+  the exact string ``(a+b)``.  Each ``\\`` is parsed in a quoted argument
+  as just ``\``, so the regex itself is actually ``\(\a\+\b\)``.  This
+  can alternatively be specified in a :ref:`bracket argument` without
+  having to escape the backslashes, e.g. ``[[\(\a\+\b\)]]``.
 
 Manipulation
 ^^^^^^^^^^^^
diff --git a/Help/command/target_link_libraries.rst b/Help/command/target_link_libraries.rst
index e1c374e..229d10c 100644
--- a/Help/command/target_link_libraries.rst
+++ b/Help/command/target_link_libraries.rst
@@ -78,6 +78,20 @@
   flags explicitly. The flags will then be placed at the toolchain-defined
   flag position in the link command.
 
+* **A generator expression**: A ``$<...>`` :manual:`generator expression
+  <cmake-generator-expressions(7)>` may evaluate to any of the above
+  items or to a :ref:`;-list <CMake Language Lists>` of them.
+  If the ``...`` contains any ``;`` characters, e.g. after evaluation
+  of a ``${list}`` variable, be sure to use an explicitly quoted
+  argument ``"$<...>"`` so that this command receives it as a
+  single ``<item>``.
+
+  Additionally, a generator expression may be used as a fragment of
+  any of the above items, e.g. ``foo$<1:_d>``.
+
+  Note that generator expressions will not be used in OLD handling of
+  policy :policy:`CMP0003` or policy :policy:`CMP0004`.
+
 * A ``debug``, ``optimized``, or ``general`` keyword immediately followed
   by another ``<item>``.  The item following such a keyword will be used
   only for the corresponding build configuration.  The ``debug`` keyword
@@ -88,18 +102,16 @@
   optional.  Higher granularity may be achieved for per-configuration
   rules by creating and linking to
   :ref:`IMPORTED library targets <Imported Targets>`.
+  These keywords are interpreted immediately by this command and therefore
+  have no special meaning when produced by a generator expression.
 
 Items containing ``::``, such as ``Foo::Bar``, are assumed to be
 :ref:`IMPORTED <Imported Targets>` or :ref:`ALIAS <Alias Targets>` library
 target names and will cause an error if no such target exists.
 See policy :policy:`CMP0028`.
 
-Arguments to ``target_link_libraries`` may use "generator expressions"
-with the syntax ``$<...>``.  Note however, that generator expressions
-will not be used in OLD handling of :policy:`CMP0003` or :policy:`CMP0004`.
-See the :manual:`cmake-generator-expressions(7)` manual for available
-expressions.  See the :manual:`cmake-buildsystem(7)` manual for more on
-defining buildsystem properties.
+See the :manual:`cmake-buildsystem(7)` manual for more on defining
+buildsystem properties.
 
 Libraries for a Target and/or its Dependents
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/Help/envvar/CTEST_PROGRESS_OUTPUT.rst b/Help/envvar/CTEST_PROGRESS_OUTPUT.rst
new file mode 100644
index 0000000..a8e15bc
--- /dev/null
+++ b/Help/envvar/CTEST_PROGRESS_OUTPUT.rst
@@ -0,0 +1,14 @@
+CTEST_PROGRESS_OUTPUT
+---------------------
+
+Boolean environment variable that affects how :manual:`ctest <ctest(1)>`
+command output reports overall progress.  When set to 1, TRUE, ON or anything
+else that evaluates to boolean true, progress is reported by repeatedly
+updating the same line.  This greatly reduces the overall verbosity, but is
+only supported when output is sent directly to a terminal.  If the environment
+variable is not set or has a value that evaluates to false, output is reported
+normally with each test having its own start and end lines logged to the
+output.
+
+The ``--progress`` option to :manual:`ctest <ctest(1)>` overrides this
+environment variable if both are given.
diff --git a/Help/manual/cmake-env-variables.7.rst b/Help/manual/cmake-env-variables.7.rst
index 42aeabc..31aa723 100644
--- a/Help/manual/cmake-env-variables.7.rst
+++ b/Help/manual/cmake-env-variables.7.rst
@@ -53,5 +53,6 @@
    /envvar/CTEST_INTERACTIVE_DEBUG_MODE
    /envvar/CTEST_OUTPUT_ON_FAILURE
    /envvar/CTEST_PARALLEL_LEVEL
+   /envvar/CTEST_PROGRESS_OUTPUT
    /envvar/CTEST_USE_LAUNCHERS_DEFAULT
    /envvar/DASHBOARD_TEST_FROM_CTEST
diff --git a/Help/manual/ctest.1.rst b/Help/manual/ctest.1.rst
index 9553d15..e24b10d 100644
--- a/Help/manual/ctest.1.rst
+++ b/Help/manual/ctest.1.rst
@@ -35,6 +35,19 @@
  which one should be tested.  Example configurations are "Debug" and
  "Release".
 
+``--progress``
+ Enable short progress output from tests.
+
+ When the output of ``ctest`` is being sent directly to a terminal, the
+ progress through the set of tests is reported by updating the same line
+ rather than printing start and end messages for each test on new lines.
+ This can significantly reduce the verbosity of the test output.
+ Test completion messages are still output on their own line for failed
+ tests and the final test summary will also still be logged.
+
+ This option can also be enabled by setting the environment variable
+ :envvar:`CTEST_PROGRESS_OUTPUT`.
+
 ``-V,--verbose``
  Enable verbose output from tests.
 
@@ -55,8 +68,8 @@
 
 ``--output-on-failure``
  Output anything outputted by the test program if the test should fail.
- This option can also be enabled by setting the environment variable
- ``CTEST_OUTPUT_ON_FAILURE``.
+ This option can also be enabled by setting the
+ :envvar:`CTEST_OUTPUT_ON_FAILURE` environment variable
 
 ``-F``
  Enable failover.
@@ -70,7 +83,7 @@
 
  This option tells CTest to run the tests in parallel using given
  number of jobs. This option can also be set by setting the
- environment variable ``CTEST_PARALLEL_LEVEL``.
+ :envvar:`CTEST_PARALLEL_LEVEL` environment variable.
 
  This option can be used with the :prop_test:`PROCESSORS` test property.
 
@@ -867,7 +880,7 @@
 
   * `CTest Script`_ variable: :variable:`CTEST_CONFIGURATION_TYPE`
   * :module:`CTest` module variable: ``DEFAULT_CTEST_CONFIGURATION_TYPE``,
-    initialized by the ``CMAKE_CONFIG_TYPE`` environment variable
+    initialized by the :envvar:`CMAKE_CONFIG_TYPE` environment variable
 
 ``LabelsForSubprojects``
   Specify a semicolon-separated list of labels that will be treated as
diff --git a/Help/policy/CMP0077.rst b/Help/policy/CMP0077.rst
index 8efe198..44797b6 100644
--- a/Help/policy/CMP0077.rst
+++ b/Help/policy/CMP0077.rst
@@ -3,10 +3,46 @@
 
 :command:`option` honors normal variables.
 
-The ``OLD`` behavior for this policy is to clear any existing normal variables
-with the same name.  The ``NEW`` behavior for this policy is to not create
-a cache entry or modify any existing normal variables if a normal variable
-with the same name already exists.
+The :command:`option` command is typically used to create a cache entry
+to allow users to set the option.  However, there are cases in which a
+normal (non-cached) variable of the same name as the option may be
+defined by the project prior to calling the :command:`option` command.
+For example, a project that embeds another project as a subdirectory
+may want to hard-code options of the subproject to build the way it needs.
+
+For historical reasons in CMake 3.12 and below the :command:`option`
+command *removes* a normal (non-cached) variable of the same name when:
+
+* a cache entry of the specified name does not exist at all, or
+* a cache entry of the specified name exists but has not been given
+  a type (e.g. via ``-D<name>=ON`` on the command line).
+
+In both of these cases (typically on the first run in a new build tree),
+the :command:`option` command gives the cache entry type ``BOOL`` and
+removes any normal (non-cached) variable of the same name.  In the
+remaining case that the cache entry of the specified name already
+exists and has a type (typically on later runs in a build tree), the
+:command:`option` command changes nothing and any normal variable of
+the same name remains set.
+
+In CMake 3.13 and above the :command:`option` command prefers to
+do nothing when a normal variable of the given name already exists.
+It does not create or update a cache entry or remove the normal variable.
+The new behavior is consistent between the first and later runs in a
+build tree.  This policy provides compatibility with projects that have
+not been updated to expect the new behavior.
+
+When the :command:`option` command sees a normal variable of the given
+name:
+
+* The ``OLD`` behavior for this policy is to proceed even when a normal
+  variable of the same name exists.  If the cache entry does not already
+  exist and have a type then it is created and/or given a type and the
+  normal variable is removed.
+
+* The ``NEW`` behavior for this policy is to do nothing when a normal
+  variable of the same name exists.  The normal variable is not removed.
+  The cache entry is not created or updated and is ignored if it exists.
 
 This policy was introduced in CMake version 3.13.  CMake version
 |release| warns when the policy is not set and uses ``OLD`` behavior.
diff --git a/Help/release/3.13.rst b/Help/release/3.13.rst
index b08f21d..b993775 100644
--- a/Help/release/3.13.rst
+++ b/Help/release/3.13.rst
@@ -20,7 +20,7 @@
 * The :generator:`Xcode` generator learned to configure more Xcode Scheme
   fields.  See the :variable:`CMAKE_XCODE_GENERATE_SCHEME` variable.
 
-* The :generator:`Green Hills MULTI` generator has been udpated:
+* The :generator:`Green Hills MULTI` generator has been updated:
 
   - Added support for architecture selection through
     :variable:`CMAKE_GENERATOR_PLATFORM`:
@@ -157,6 +157,10 @@
 * The :module:`FindPkgConfig` module gained an option to create imported
   targets in global scope.
 
+* The :module:`FindPkgConfig` module gained support for ``<`` and ``>``
+  operators for version checks in addition to the already supported
+  operators ``>=``, ``<=``, and ``=``.
+
 * Modules :module:`FindPython3`, :module:`FindPython2` and :module:`FindPython`
   gain capability to control order of resource lookup on macOS (Framework) and
   Windows (Registry).
@@ -203,8 +207,10 @@
 Other Changes
 =============
 
-* The :command:`option` command now honors existing normal variables instead
-  of replacing them with a cache entry. See policy :policy:`CMP0077`.
+* The :command:`option` command now honors an existing normal variable
+  of the same name and does nothing instead of possibly creating a cache
+  entry (or setting its type) and removing the normal variable.
+  See policy :policy:`CMP0077`.
 
 * The :ref:`Makefile Generators` learned to remove custom command and
   custom target byproducts during ``make clean``.
diff --git a/Help/release/dev/0-sample-topic.rst b/Help/release/dev/0-sample-topic.rst
deleted file mode 100644
index e4cc01e..0000000
--- a/Help/release/dev/0-sample-topic.rst
+++ /dev/null
@@ -1,7 +0,0 @@
-0-sample-topic
---------------
-
-* This is a sample release note for the change in a topic.
-  Developers should add similar notes for each topic branch
-  making a noteworthy change.  Each document should be named
-  and titled to match the topic name to avoid merge conflicts.
diff --git a/Help/release/index.rst b/Help/release/index.rst
index 7ef3a8e..fbe4cf6 100644
--- a/Help/release/index.rst
+++ b/Help/release/index.rst
@@ -7,8 +7,6 @@
   This file should include the adjacent "dev.txt" file
   in development versions but not in release versions.
 
-.. include:: dev.txt
-
 Releases
 ========
 
diff --git a/Help/variable/CMAKE_OSX_VARIABLE.txt b/Help/variable/CMAKE_OSX_VARIABLE.txt
index 5b84726..16f3c1a 100644
--- a/Help/variable/CMAKE_OSX_VARIABLE.txt
+++ b/Help/variable/CMAKE_OSX_VARIABLE.txt
@@ -2,6 +2,8 @@
 :command:`project` or :command:`enable_language` command invocation
 because it may influence configuration of the toolchain and flags.
 It is intended to be set locally by the user creating a build tree.
+This variable should be set as a ``CACHE`` entry (or else CMake may
+remove it while initializing a cache entry of the same name).
 
 Despite the ``OSX`` part in the variable name(s) they apply also to
 other SDKs than macOS like iOS, tvOS, or watchOS.
diff --git a/Modules/Compiler/Clang.cmake b/Modules/Compiler/Clang.cmake
index 1653b55..e23470b 100644
--- a/Modules/Compiler/Clang.cmake
+++ b/Modules/Compiler/Clang.cmake
@@ -33,6 +33,14 @@
     set(CMAKE_${lang}_LINKER_WRAPPER_FLAG "-Xlinker" " ")
     set(CMAKE_${lang}_LINKER_WRAPPER_FLAG_SEP)
 
+    if(CMAKE_${lang}_COMPILER_TARGET)
+      if(CMAKE_${lang}_COMPILER_VERSION VERSION_LESS 3.4.0)
+        list(APPEND CMAKE_${lang}_COMPILER_PREDEFINES_COMMAND "-target" "${CMAKE_${lang}_COMPILER_TARGET}")
+      else()
+        list(APPEND CMAKE_${lang}_COMPILER_PREDEFINES_COMMAND "--target=${CMAKE_${lang}_COMPILER_TARGET}")
+      endif()
+    endif()
+
     set(_CMAKE_${lang}_IPO_SUPPORTED_BY_CMAKE YES)
     set(_CMAKE_${lang}_IPO_MAY_BE_SUPPORTED_BY_COMPILER YES)
 
diff --git a/Modules/FindBLAS.cmake b/Modules/FindBLAS.cmake
index 39b9b74..e955bc2 100644
--- a/Modules/FindBLAS.cmake
+++ b/Modules/FindBLAS.cmake
@@ -53,8 +53,10 @@
 # * SGIMATH
 # * IBMESSL
 # * Intel10_32 (intel mkl v10 32 bit)
-# * Intel10_64lp (intel mkl v10 64 bit, lp thread model, lp64 model)
-# * Intel10_64lp_seq (intel mkl v10 64 bit, sequential code, lp64 model)
+# * Intel10_64lp (intel mkl v10+ 64 bit, threaded code, lp64 model)
+# * Intel10_64lp_seq (intel mkl v10+ 64 bit, sequential code, lp64 model)
+# * Intel10_64ilp (intel mkl v10+ 64 bit, threaded code, ilp64 model)
+# * Intel10_64ilp_seq (intel mkl v10+ 64 bit, sequential code, ilp64 model)
 # * Intel (older versions of mkl 32 and 64 bit)
 # * ACML
 # * ACML_MP
@@ -199,9 +201,14 @@
   endif()
 endif ()
 
-#BLAS in intel mkl 10 library? (em64t 64bit)
+#BLAS in intel mkl 10+ library? (em64t 64bit)
 if (BLA_VENDOR MATCHES "Intel" OR BLA_VENDOR STREQUAL "All")
   if (NOT BLAS_LIBRARIES)
+    if (BLA_VENDOR MATCHES "_64ilp")
+      set(BLAS_mkl_ILP_MODE "ilp64")
+    else ()
+      set(BLAS_mkl_ILP_MODE "lp64")
+    endif ()
     if (NOT WIN32)
       set(LM "-lm")
     endif ()
@@ -230,9 +237,9 @@
             list(APPEND BLAS_SEARCH_LIBS_WIN_MAIN
               "mkl_blas95${BLAS_mkl_DLL_SUFFIX} mkl_intel_c${BLAS_mkl_DLL_SUFFIX}")
           endif()
-          if (BLA_VENDOR MATCHES "^Intel10_64lp" OR BLA_VENDOR STREQUAL "All")
+          if (BLA_VENDOR MATCHES "^Intel10_64i?lp" OR BLA_VENDOR STREQUAL "All")
             list(APPEND BLAS_SEARCH_LIBS_WIN_MAIN
-              "mkl_blas95_lp64${BLAS_mkl_DLL_SUFFIX} mkl_intel_lp64${BLAS_mkl_DLL_SUFFIX}")
+              "mkl_blas95_${BLAS_mkl_ILP_MODE}${BLAS_mkl_DLL_SUFFIX} mkl_intel_${BLAS_mkl_ILP_MODE}${BLAS_mkl_DLL_SUFFIX}")
           endif ()
 
           # Add threading/sequential libs
@@ -262,23 +269,23 @@
             list(APPEND BLAS_SEARCH_LIBS
               "mkl_blas95 mkl_intel mkl_intel_thread mkl_core guide")
           endif ()
-          if (BLA_VENDOR STREQUAL "Intel10_64lp" OR BLA_VENDOR STREQUAL "All")
+          if (BLA_VENDOR MATCHES "^Intel10_64i?lp$" OR BLA_VENDOR STREQUAL "All")
             # old version
             list(APPEND BLAS_SEARCH_LIBS
-              "mkl_blas95 mkl_intel_lp64 mkl_intel_thread mkl_core guide")
+              "mkl_blas95 mkl_intel_${BLAS_mkl_ILP_MODE} mkl_intel_thread mkl_core guide")
 
             # mkl >= 10.3
             if (CMAKE_C_COMPILER MATCHES ".+gcc")
               list(APPEND BLAS_SEARCH_LIBS
-                "mkl_blas95_lp64 mkl_intel_lp64 mkl_gnu_thread mkl_core gomp")
+                "mkl_blas95_${BLAS_mkl_ILP_MODE} mkl_intel_${BLAS_mkl_ILP_MODE} mkl_gnu_thread mkl_core gomp")
             else ()
               list(APPEND BLAS_SEARCH_LIBS
-                "mkl_blas95_lp64 mkl_intel_lp64 mkl_intel_thread mkl_core iomp5")
+                "mkl_blas95_${BLAS_mkl_ILP_MODE} mkl_intel_${BLAS_mkl_ILP_MODE} mkl_intel_thread mkl_core iomp5")
             endif ()
           endif ()
-          if (BLA_VENDOR STREQUAL "Intel10_64lp_seq" OR BLA_VENDOR STREQUAL "All")
+          if (BLA_VENDOR MATCHES "^Intel10_64i?lp_seq$" OR BLA_VENDOR STREQUAL "All")
             list(APPEND BLAS_SEARCH_LIBS
-              "mkl_intel_lp64 mkl_sequential mkl_core")
+              "mkl_blas95_${BLAS_mkl_ILP_MODE} mkl_intel_${BLAS_mkl_ILP_MODE} mkl_sequential mkl_core")
           endif ()
         endif ()
       else ()
@@ -297,9 +304,9 @@
             list(APPEND BLAS_SEARCH_LIBS_WIN_MAIN
               "mkl_intel_c${BLAS_mkl_DLL_SUFFIX}")
           endif()
-          if (BLA_VENDOR MATCHES "^Intel10_64lp" OR BLA_VENDOR STREQUAL "All")
+          if (BLA_VENDOR MATCHES "^Intel10_64i?lp" OR BLA_VENDOR STREQUAL "All")
             list(APPEND BLAS_SEARCH_LIBS_WIN_MAIN
-              "mkl_intel_lp64${BLAS_mkl_DLL_SUFFIX}")
+              "mkl_intel_${BLAS_mkl_ILP_MODE}${BLAS_mkl_DLL_SUFFIX}")
           endif ()
 
           # Add threading/sequential libs
@@ -329,24 +336,24 @@
             list(APPEND BLAS_SEARCH_LIBS
               "mkl_intel mkl_intel_thread mkl_core guide")
           endif ()
-          if (BLA_VENDOR STREQUAL "Intel10_64lp" OR BLA_VENDOR STREQUAL "All")
+          if (BLA_VENDOR MATCHES "^Intel10_64i?lp$" OR BLA_VENDOR STREQUAL "All")
 
             # old version
             list(APPEND BLAS_SEARCH_LIBS
-              "mkl_intel_lp64 mkl_intel_thread mkl_core guide")
+              "mkl_intel_${BLAS_mkl_ILP_MODE} mkl_intel_thread mkl_core guide")
 
             # mkl >= 10.3
             if (CMAKE_C_COMPILER MATCHES ".+gcc")
               list(APPEND BLAS_SEARCH_LIBS
-                "mkl_intel_lp64 mkl_gnu_thread mkl_core gomp")
+                "mkl_intel_${BLAS_mkl_ILP_MODE} mkl_gnu_thread mkl_core gomp")
             else ()
               list(APPEND BLAS_SEARCH_LIBS
-                "mkl_intel_lp64 mkl_intel_thread mkl_core iomp5")
+                "mkl_intel_${BLAS_mkl_ILP_MODE} mkl_intel_thread mkl_core iomp5")
             endif ()
           endif ()
-          if (BLA_VENDOR STREQUAL "Intel10_64lp_seq" OR BLA_VENDOR STREQUAL "All")
+          if (BLA_VENDOR MATCHES "^Intel10_64i?lp_seq$" OR BLA_VENDOR STREQUAL "All")
             list(APPEND BLAS_SEARCH_LIBS
-              "mkl_intel_lp64 mkl_sequential mkl_core")
+              "mkl_intel_${BLAS_mkl_ILP_MODE} mkl_sequential mkl_core")
           endif ()
 
           #older vesions of intel mkl libs
@@ -376,6 +383,7 @@
       endforeach ()
 
     endif ()
+    unset(BLAS_mkl_ILP_MODE)
   endif ()
 endif ()
 
diff --git a/Modules/FindLAPACK.cmake b/Modules/FindLAPACK.cmake
index a3c87f8..7ca9950 100644
--- a/Modules/FindLAPACK.cmake
+++ b/Modules/FindLAPACK.cmake
@@ -278,6 +278,12 @@
       find_package(Threads REQUIRED)
     endif()
 
+    if (BLA_VENDOR MATCHES "_64ilp")
+      set(BLAS_mkl_ILP_MODE "ilp64")
+    else ()
+      set(BLAS_mkl_ILP_MODE "lp64")
+    endif ()
+
     set(LAPACK_SEARCH_LIBS "")
 
     if (BLA_F95)
@@ -292,7 +298,7 @@
       list(APPEND LAPACK_SEARCH_LIBS
         "mkl_intel_c")
       list(APPEND LAPACK_SEARCH_LIBS
-        "mkl_intel_lp64")
+        "mkl_intel_${BLAS_mkl_ILP_MODE}")
     else()
       set(LAPACK_mkl_SEARCH_SYMBOL "cheev")
       set(_LIBRARIES LAPACK_LIBRARIES)
@@ -303,7 +309,7 @@
         "mkl_lapack")
       # new >= 10.3
       list(APPEND LAPACK_SEARCH_LIBS
-        "mkl_gf_lp64")
+        "mkl_gf_${BLAS_mkl_ILP_MODE}")
     endif()
 
     # First try empty lapack libs
@@ -332,6 +338,8 @@
           )
       endif ()
     endforeach ()
+
+    unset(BLAS_mkl_ILP_MODE)
   endif ()
 endif()
 else()
diff --git a/Modules/FindPkgConfig.cmake b/Modules/FindPkgConfig.cmake
index 3934867..a96df99 100644
--- a/Modules/FindPkgConfig.cmake
+++ b/Modules/FindPkgConfig.cmake
@@ -397,7 +397,7 @@
       set(_pkg_check_modules_exist_query)
 
       # check whether version is given
-      if (_pkg_check_modules_pkg MATCHES "(.*[^><])(>=|=|<=)(.*)")
+      if (_pkg_check_modules_pkg MATCHES "(.*[^><])(=|[><]=?)(.*)")
         set(_pkg_check_modules_pkg_name "${CMAKE_MATCH_1}")
         set(_pkg_check_modules_pkg_op "${CMAKE_MATCH_2}")
         set(_pkg_check_modules_pkg_ver "${CMAKE_MATCH_3}")
@@ -415,9 +415,11 @@
       list(APPEND _pkg_check_modules_packages    "${_pkg_check_modules_pkg_name}")
 
       # create the final query which is of the format:
+      # * <pkg-name> > <version>
       # * <pkg-name> >= <version>
       # * <pkg-name> = <version>
       # * <pkg-name> <= <version>
+      # * <pkg-name> < <version>
       # * --exists <pkg-name>
       list(APPEND _pkg_check_modules_exist_query --print-errors --short-errors)
       if (_pkg_check_modules_pkg_op)
diff --git a/Modules/InstallRequiredSystemLibraries.cmake b/Modules/InstallRequiredSystemLibraries.cmake
index 36dd0a0..4ecba05 100644
--- a/Modules/InstallRequiredSystemLibraries.cmake
+++ b/Modules/InstallRequiredSystemLibraries.cmake
@@ -362,7 +362,7 @@
           )
       endif()
 
-      # include the language dll's for vs8 as well as the actuall dll's
+      # include the language dll's for vs8 as well as the actual dll's
       set(MSVC_MFCLOC_DIR "${MSVC_REDIST_DIR}/${CMAKE_MSVC_ARCH}/Microsoft.VC80.MFCLOC")
       # Install the manifest that allows DLLs to be loaded from the
       # directory containing the executable.
@@ -406,7 +406,7 @@
           )
       endif()
 
-      # include the language dll's for vs9 as well as the actuall dll's
+      # include the language dll's for vs9 as well as the actual dll's
       set(MSVC_MFCLOC_DIR "${MSVC_REDIST_DIR}/${CMAKE_MSVC_ARCH}/Microsoft.VC90.MFCLOC")
       # Install the manifest that allows DLLs to be loaded from the
       # directory containing the executable.
@@ -487,7 +487,7 @@
         endif()
       endif()
 
-      # include the language dll's as well as the actuall dll's
+      # include the language dll's as well as the actual dll's
       set(MSVC_MFCLOC_DIR "${MSVC_REDIST_MFC_DIR}/${CMAKE_MSVC_ARCH}/Microsoft.${MSVC_REDIST_NAME}.MFCLOC")
       set(__install__libs ${__install__libs}
         "${MSVC_MFCLOC_DIR}/mfc${v}chs.dll"
diff --git a/Modules/Internal/CPack/CPackRPM.cmake b/Modules/Internal/CPack/CPackRPM.cmake
index 3bd5147..2de71ee 100644
--- a/Modules/Internal/CPack/CPackRPM.cmake
+++ b/Modules/Internal/CPack/CPackRPM.cmake
@@ -491,7 +491,7 @@
           list(LENGTH SYMLINK_RELOCATIONS SYMLINK_RELOCATIONS_COUNT)
           list(LENGTH POINT_RELOCATIONS POINT_RELOCATIONS_COUNT)
         else()
-          # location pointed to is ouside WDR so it should be treated as a permanent symlink
+          # location pointed to is outside WDR so it should be treated as a permanent symlink
           set(SYMLINK_POINT_WD_ "${SYMLINK_POINT_}")
 
           unset(SYMLINK_RELOCATIONS)
diff --git a/Modules/NSIS.template.in b/Modules/NSIS.template.in
index 9001888..f75ae78 100644
--- a/Modules/NSIS.template.in
+++ b/Modules/NSIS.template.in
@@ -847,7 +847,7 @@
 @CPACK_NSIS_DELETE_ICONS@
 @CPACK_NSIS_DELETE_ICONS_EXTRA@
 
-  ;Delete empty start menu parent diretories
+  ;Delete empty start menu parent directories
   StrCpy $MUI_TEMP "$SMPROGRAMS\$MUI_TEMP"
 
   startMenuDeleteLoop:
@@ -866,7 +866,7 @@
   Delete "$SMPROGRAMS\$MUI_TEMP\Uninstall.lnk"
 @CPACK_NSIS_DELETE_ICONS_EXTRA@
 
-  ;Delete empty start menu parent diretories
+  ;Delete empty start menu parent directories
   StrCpy $MUI_TEMP "$SMPROGRAMS\$MUI_TEMP"
 
   secondStartMenuDeleteLoop:
diff --git a/Modules/Platform/Android-Clang.cmake b/Modules/Platform/Android-Clang.cmake
index f739ab1..9ed1e01 100644
--- a/Modules/Platform/Android-Clang.cmake
+++ b/Modules/Platform/Android-Clang.cmake
@@ -40,5 +40,6 @@
   endif()
   if(NOT CMAKE_${lang}_COMPILER_TARGET)
     set(CMAKE_${lang}_COMPILER_TARGET "${_ANDROID_ABI_CLANG_TARGET}")
+    list(APPEND CMAKE_${lang}_COMPILER_PREDEFINES_COMMAND "--target=${CMAKE_${lang}_COMPILER_TARGET}")
   endif()
 endmacro()
diff --git a/Modules/Platform/GNU.cmake b/Modules/Platform/GNU.cmake
index e8c3b65..fac29a8 100644
--- a/Modules/Platform/GNU.cmake
+++ b/Modules/Platform/GNU.cmake
@@ -8,6 +8,33 @@
 set(CMAKE_SHARED_LIBRARY_SONAME_C_FLAG "-Wl,-soname,")
 set(CMAKE_EXE_EXPORTS_C_FLAG "-Wl,--export-dynamic")
 
+# Debian policy requires that shared libraries be installed without
+# executable permission.  Fedora policy requires that shared libraries
+# be installed with the executable permission.  Since the native tools
+# create shared libraries with execute permission in the first place a
+# reasonable policy seems to be to install with execute permission by
+# default.  In order to support debian packages we provide an option
+# here.  The option default is based on the current distribution, but
+# packagers can set it explicitly on the command line.
+if(DEFINED CMAKE_INSTALL_SO_NO_EXE)
+  # Store the decision variable in the cache.  This preserves any
+  # setting the user provides on the command line.
+  set(CMAKE_INSTALL_SO_NO_EXE "${CMAKE_INSTALL_SO_NO_EXE}" CACHE INTERNAL
+    "Install .so files without execute permission.")
+else()
+  # Store the decision variable as an internal cache entry to avoid
+  # checking the platform every time.  This option is advanced enough
+  # that only package maintainers should need to adjust it.  They are
+  # capable of providing a setting on the command line.
+  if(EXISTS "/etc/debian_version")
+    set(CMAKE_INSTALL_SO_NO_EXE 1 CACHE INTERNAL
+      "Install .so files without execute permission.")
+  else()
+    set(CMAKE_INSTALL_SO_NO_EXE 0 CACHE INTERNAL
+      "Install .so files without execute permission.")
+  endif()
+endif()
+
 set(CMAKE_LIBRARY_ARCHITECTURE_REGEX "[a-z0-9_]+(-[a-z0-9_]+)?-gnu[a-z0-9_]*")
 
 include(Platform/UnixPaths)
diff --git a/Modules/UseSWIG.cmake b/Modules/UseSWIG.cmake
index dc4febc..f20a53b 100644
--- a/Modules/UseSWIG.cmake
+++ b/Modules/UseSWIG.cmake
@@ -500,6 +500,10 @@
   get_property (compile_options SOURCE "${infile}" PROPERTY GENERATED_COMPILE_OPTIONS)
   set_property (SOURCE "${swig_generated_file_fullname}" PROPERTY COMPILE_OPTIONS $<TARGET_GENEX_EVAL:${target_name},$<TARGET_PROPERTY:${target_name},SWIG_GENERATED_COMPILE_OPTIONS>> ${compile_options})
 
+  if (SWIG_MODULE_${name}_SWIG_LANGUAGE_FLAG MATCHES "php")
+    set_property (SOURCE "${swig_generated_file_fullname}" APPEND PROPERTY INCLUDE_DIRECTORIES "${outdir}")
+  endif()
+
   set(${outfiles} "${swig_generated_file_fullname}" ${swig_extra_generated_files} PARENT_SCOPE)
 
   # legacy support
diff --git a/Source/CMakeVersion.cmake b/Source/CMakeVersion.cmake
index 129c6fb..626dbb8 100644
--- a/Source/CMakeVersion.cmake
+++ b/Source/CMakeVersion.cmake
@@ -1,5 +1,5 @@
 # CMake version number components.
 set(CMake_VERSION_MAJOR 3)
-set(CMake_VERSION_MINOR 12)
-set(CMake_VERSION_PATCH 20181003)
-#set(CMake_VERSION_RC 1)
+set(CMake_VERSION_MINOR 13)
+set(CMake_VERSION_PATCH 0)
+set(CMake_VERSION_RC 1)
diff --git a/Source/CTest/cmCTestScriptHandler.cxx b/Source/CTest/cmCTestScriptHandler.cxx
index 6b62bb4..a87473d 100644
--- a/Source/CTest/cmCTestScriptHandler.cxx
+++ b/Source/CTest/cmCTestScriptHandler.cxx
@@ -563,7 +563,7 @@
 
   // now that we have done most of the error checking finally run the
   // dashboard, we may be asked to repeatedly run this dashboard, such as
-  // for a continuous, do we ned to run it more than once?
+  // for a continuous, do we need to run it more than once?
   if (this->ContinuousDuration >= 0) {
     this->UpdateElapsedTime();
     auto ending_time =
diff --git a/Source/CTest/cmParseGTMCoverage.cxx b/Source/CTest/cmParseGTMCoverage.cxx
index 822363d..83dde3f 100644
--- a/Source/CTest/cmParseGTMCoverage.cxx
+++ b/Source/CTest/cmParseGTMCoverage.cxx
@@ -160,7 +160,7 @@
 {
   // this method parses lines from the .mcov file
   // each line has ^COVERAGE(...) in it, and there
-  // are several varients of coverage lines:
+  // are several variants of coverage lines:
   //
   // ^COVERAGE("DIC11","PR1",0)="2:0:0:0"
   //          ( file  , entry, line ) = "number_executed:timing_info"
diff --git a/Source/cmProjectCommand.cxx b/Source/cmProjectCommand.cxx
index 305c7a6..8f565c8 100644
--- a/Source/cmProjectCommand.cxx
+++ b/Source/cmProjectCommand.cxx
@@ -300,19 +300,15 @@
     }
   }
 
-  if (haveDescription) {
-    this->Makefile->AddDefinition("PROJECT_DESCRIPTION", description.c_str());
-    this->Makefile->AddDefinition(projectName + "_DESCRIPTION",
-                                  description.c_str());
-    TopLevelCMakeVarCondSet("CMAKE_PROJECT_DESCRIPTION", description.c_str());
-  }
+  this->Makefile->AddDefinition("PROJECT_DESCRIPTION", description.c_str());
+  this->Makefile->AddDefinition(projectName + "_DESCRIPTION",
+                                description.c_str());
+  TopLevelCMakeVarCondSet("CMAKE_PROJECT_DESCRIPTION", description.c_str());
 
-  if (haveHomepage) {
-    this->Makefile->AddDefinition("PROJECT_HOMEPAGE_URL", homepage.c_str());
-    this->Makefile->AddDefinition(projectName + "_HOMEPAGE_URL",
-                                  homepage.c_str());
-    TopLevelCMakeVarCondSet("CMAKE_PROJECT_HOMEPAGE_URL", homepage.c_str());
-  }
+  this->Makefile->AddDefinition("PROJECT_HOMEPAGE_URL", homepage.c_str());
+  this->Makefile->AddDefinition(projectName + "_HOMEPAGE_URL",
+                                homepage.c_str());
+  TopLevelCMakeVarCondSet("CMAKE_PROJECT_HOMEPAGE_URL", homepage.c_str());
 
   if (languages.empty()) {
     // if no language is specified do c and c++
diff --git a/Source/cmSystemTools.cxx b/Source/cmSystemTools.cxx
index 8339aac..d05d660 100644
--- a/Source/cmSystemTools.cxx
+++ b/Source/cmSystemTools.cxx
@@ -2826,11 +2826,11 @@
         // contain the location of the linker map, however on MIPS the
         // .dynamic section is always read-only so this is not possible. MIPS
         // objects instead contain a DT_MIPS_RLD_MAP tag which contains the
-        // address where the dyanmic linker will write to (an indirect
+        // address where the dynamic linker will write to (an indirect
         // version of DT_DEBUG). Since this doesn't work when using PIE, a
         // relative equivalent was created - DT_MIPS_RLD_MAP_REL. Since this
         // version contains a relative offset, moving it changes the
-        // calculated address. This may cause the dyanmic linker to write
+        // calculated address. This may cause the dynamic linker to write
         // into memory it should not be changing.
         //
         // To fix this, we adjust the value of DT_MIPS_RLD_MAP_REL here. If
diff --git a/Source/cmTimestamp.cxx b/Source/cmTimestamp.cxx
index 14cf6e9..da5d21e 100644
--- a/Source/cmTimestamp.cxx
+++ b/Source/cmTimestamp.cxx
@@ -96,7 +96,7 @@
   // From Linux timegm() manpage.
 
   std::string tz_old;
-  cmSystemTools::GetEnv("TZ", tz_old);
+  bool const tz_was_set = cmSystemTools::GetEnv("TZ", tz_old);
   tz_old = "TZ=" + tz_old;
 
   // The standard says that "TZ=" or "TZ=[UNRECOGNIZED_TZ]" means UTC.
@@ -109,7 +109,17 @@
 
   time_t result = mktime(&tm);
 
+#  ifdef CMAKE_BUILD_WITH_CMAKE
+  if (tz_was_set) {
+    cmSystemTools::PutEnv(tz_old);
+  } else {
+    cmSystemTools::UnsetEnv("TZ");
+  }
+#  else
+  // No UnsetEnv during bootstrap.  This is good enough for CMake itself.
   cmSystemTools::PutEnv(tz_old);
+  static_cast<void>(tz_was_set);
+#  endif
 
   tzset();
 
diff --git a/Source/cmVS141CLFlagTable.h b/Source/cmVS141CLFlagTable.h
index 7d3e356..2a9944a 100644
--- a/Source/cmVS141CLFlagTable.h
+++ b/Source/cmVS141CLFlagTable.h
@@ -83,6 +83,8 @@
   { "FloatingPointModel", "fp:strict", "Strict", "Strict", 0 },
   { "FloatingPointModel", "fp:fast", "Fast", "Fast", 0 },
 
+  { "SpectreMitigation", "Qspectre", "Spectre mitigations", "Spectre", 0 },
+
   { "LanguageStandard", "std:c++17", "ISO C++17 Standard", "stdcpp17", 0 },
   { "LanguageStandard", "std:c++14", "ISO C++14 Standard", "stdcpp14", 0 },
   { "LanguageStandard", "std:c++latest", "ISO C++ Latest Draft Standard",
diff --git a/Source/cmVisualStudio10TargetGenerator.cxx b/Source/cmVisualStudio10TargetGenerator.cxx
index 16eca96..57d66e0 100644
--- a/Source/cmVisualStudio10TargetGenerator.cxx
+++ b/Source/cmVisualStudio10TargetGenerator.cxx
@@ -1125,6 +1125,9 @@
   if (this->IPOEnabledConfigurations.count(config) > 0) {
     e1.Element("WholeProgramOptimization", "true");
   }
+  if (this->SpectreMitigationConfigurations.count(config) > 0) {
+    e1.Element("SpectreMitigation", "Spectre");
+  }
 }
 
 void cmVisualStudio10TargetGenerator::WriteMSToolConfigurationValuesManaged(
@@ -2625,6 +2628,11 @@
     }
   }
 
+  if (clOptions.HasFlag("SpectreMitigation")) {
+    this->SpectreMitigationConfigurations.insert(configName);
+    clOptions.RemoveFlag("SpectreMitigation");
+  }
+
   this->ClOptions[configName] = std::move(pOptions);
   return true;
 }
diff --git a/Source/cmVisualStudio10TargetGenerator.h b/Source/cmVisualStudio10TargetGenerator.h
index 829d2bf..0dc03b6 100644
--- a/Source/cmVisualStudio10TargetGenerator.h
+++ b/Source/cmVisualStudio10TargetGenerator.h
@@ -205,6 +205,7 @@
   unsigned int NsightTegraVersion[4];
   bool TargetCompileAsWinRT;
   std::set<std::string> IPOEnabledConfigurations;
+  std::set<std::string> SpectreMitigationConfigurations;
   cmGlobalVisualStudio10Generator* const GlobalGenerator;
   cmLocalVisualStudio10Generator* const LocalGenerator;
   std::set<std::string> CSharpCustomCommandNames;
diff --git a/Tests/CMakeLib/testSystemTools.cxx b/Tests/CMakeLib/testSystemTools.cxx
index 0dfa326..623ad28 100644
--- a/Tests/CMakeLib/testSystemTools.cxx
+++ b/Tests/CMakeLib/testSystemTools.cxx
@@ -52,7 +52,7 @@
   cmAssert(cmSystemTools::strverscmp("99999999999999", "99999999999991") > 0,
            "strverscmp natural overflow");
   cmAssert(cmSystemTools::strverscmp("00000000000009", "00000000000001") > 0,
-           "strverscmp deciaml precision");
+           "strverscmp decimal precision");
   cmAssert(cmSystemTools::strverscmp("a.b.c.0", "a.b.c.000") > 0,
            "strverscmp multiple zeros");
   cmAssert(cmSystemTools::strverscmp("lib_1.2_10", "lib_1.2_2") > 0,
diff --git a/Tests/QtAutogen/MocIncludeRelaxed/CMakeLists.txt b/Tests/QtAutogen/MocIncludeRelaxed/CMakeLists.txt
index b1c4fc3..1ad6238 100644
--- a/Tests/QtAutogen/MocIncludeRelaxed/CMakeLists.txt
+++ b/Tests/QtAutogen/MocIncludeRelaxed/CMakeLists.txt
@@ -9,7 +9,7 @@
 set(MOC_INCLUDE_NAME "mocIncludeRelaxed")
 include(${CMAKE_CURRENT_SOURCE_DIR}/../MocInclude/shared.cmake)
 
-# Relaxed ony executable
+# Relaxed only executable
 add_executable(mocIncludeRelaxedOnly
   RObjA.cpp
   RObjB.cpp
diff --git a/Tests/RunCMake/FindPkgConfig/FindPkgConfig_VERSION_OPERATORS.cmake b/Tests/RunCMake/FindPkgConfig/FindPkgConfig_VERSION_OPERATORS.cmake
new file mode 100644
index 0000000..2a505c6
--- /dev/null
+++ b/Tests/RunCMake/FindPkgConfig/FindPkgConfig_VERSION_OPERATORS.cmake
@@ -0,0 +1,83 @@
+cmake_minimum_required(VERSION 3.12)
+
+project(FindPkgConfig_IMPORTED_TARGET C)
+
+find_package(PkgConfig REQUIRED)
+
+message(STATUS "source: ${CMAKE_CURRENT_SOURCE_DIR} bin ${CMAKE_CURRENT_BINARY_DIR}")
+
+# Setup for the remaining package tests below
+set(PKG_CONFIG_USE_CMAKE_PREFIX_PATH)
+set(fakePkgDir ${CMAKE_CURRENT_BINARY_DIR}/pc-fakepackage)
+file(WRITE ${fakePkgDir}/lib/libcmakeinternalfakepackage.a "")
+file(WRITE ${fakePkgDir}/lib/cmakeinternalfakepackage.lib  "")
+file(WRITE ${fakePkgDir}/lib/pkgconfig/cmakeinternalfakepackage.pc
+"Name: CMakeInternalFakePackage
+Description: Dummy package for FindPkgConfig VERSION_OPERATORS test
+Version: 8.9
+Libs: -lcmakeinternalfakepackage
+")
+
+# Always find the .pc file in the calls further below so that we can test that
+# the import target find_library() calls handle the NO...PATH options correctly
+set(ENV{PKG_CONFIG_PATH} ${fakePkgDir}/lib/pkgconfig)
+
+pkg_check_modules(FakePackageGE REQUIRED QUIET "cmakeinternalfakepackage >= 8")
+if (NOT FakePackageGE_FOUND)
+  message(FATAL_ERROR "fake package >= 8 not found")
+endif()
+
+pkg_check_modules(FakePackageGE_FAIL QUIET "cmakeinternalfakepackage >= 8.10")
+if (FakePackageGE_FAIL_FOUND)
+  message(FATAL_ERROR "fake package >= 8.10 found")
+endif()
+
+pkg_check_modules(FakePackageLE REQUIRED QUIET "cmakeinternalfakepackage<=9")
+if (NOT FakePackageLE_FOUND)
+  message(FATAL_ERROR "fake package <= 9 not found")
+endif()
+
+pkg_check_modules(FakePackageLE_FAIL QUIET "cmakeinternalfakepackage <= 8.1")
+if (FakePackageLE_FAIL_FOUND)
+  message(FATAL_ERROR "fake package <= 8.1 found")
+endif()
+
+pkg_check_modules(FakePackageGT REQUIRED QUIET "cmakeinternalfakepackage > 8")
+if (NOT FakePackageGT_FOUND)
+  message(FATAL_ERROR "fake package > 8 not found")
+endif()
+
+pkg_check_modules(FakePackageGT_FAIL QUIET "cmakeinternalfakepackage > 8.9")
+if (FakePackageGT_FAIL_FOUND)
+  message(FATAL_ERROR "fake package > 8.9 found")
+endif()
+
+pkg_check_modules(FakePackageLT REQUIRED QUIET "cmakeinternalfakepackage<9")
+if (NOT FakePackageLT_FOUND)
+  message(FATAL_ERROR "fake package < 9 not found")
+endif()
+
+pkg_check_modules(FakePackageLT_FAIL QUIET "cmakeinternalfakepackage < 8.9")
+if (FakePackageLT_FAIL_FOUND)
+  message(FATAL_ERROR "fake package < 8.9 found")
+endif()
+
+pkg_check_modules(FakePackageEQ REQUIRED QUIET "cmakeinternalfakepackage=8.9")
+if (NOT FakePackageEQ_FOUND)
+  message(FATAL_ERROR "fake package = 8.9 not found")
+endif()
+
+pkg_check_modules(FakePackageEQ_FAIL QUIET "cmakeinternalfakepackage = 8.8")
+if (FakePackageEQ_FAIL_FOUND)
+  message(FATAL_ERROR "fake package = 8.8 found")
+endif()
+
+pkg_check_modules(FakePackageEQ_INV QUIET "cmakeinternalfakepackage == 8.9")
+if (FakePackageEQ_FAIL_FOUND)
+  message(FATAL_ERROR "fake package == 8.9 found")
+endif()
+
+pkg_check_modules(FakePackageLLT_INV QUIET "cmakeinternalfakepackage <<= 9")
+if (FakePackageLLT_FAIL_FOUND)
+  message(FATAL_ERROR "fake package <<= 9 found")
+endif()
diff --git a/Tests/RunCMake/FindPkgConfig/RunCMakeTest.cmake b/Tests/RunCMake/FindPkgConfig/RunCMakeTest.cmake
index e12b52f..671ff51 100644
--- a/Tests/RunCMake/FindPkgConfig/RunCMakeTest.cmake
+++ b/Tests/RunCMake/FindPkgConfig/RunCMakeTest.cmake
@@ -16,4 +16,5 @@
   run_cmake(FindPkgConfig_GET_VARIABLE)
   run_cmake(FindPkgConfig_cache_variables)
   run_cmake(FindPkgConfig_IMPORTED_TARGET)
+  run_cmake(FindPkgConfig_VERSION_OPERATORS)
 endif ()
diff --git a/Tests/RunCMake/project/ProjectTwice.cmake b/Tests/RunCMake/project/ProjectTwice.cmake
new file mode 100644
index 0000000..d053834
--- /dev/null
+++ b/Tests/RunCMake/project/ProjectTwice.cmake
@@ -0,0 +1,26 @@
+cmake_policy(SET CMP0048 NEW)
+project(ProjectTwiceTestFirst
+  VERSION 1.2.3.4
+  DESCRIPTION "Test Project"
+  HOMEPAGE_URL "http://example.com"
+  LANGUAGES NONE
+)
+
+project(ProjectTwiceTestSecond LANGUAGES NONE)
+
+foreach(var
+  PROJECT_VERSION
+  PROJECT_VERSION_MAJOR
+  PROJECT_VERSION_MINOR
+  PROJECT_VERSION_PATCH
+  PROJECT_VERSION_TWEAK
+  PROJECT_DESCRIPTION
+  PROJECT_HOMEPAGE_URL
+)
+  if(${var})
+    message(SEND_ERROR "${var} set but should be empty")
+  endif()
+  if(CMAKE_${var})
+    message(SEND_ERROR "CMAKE_${var} set but should be empty")
+  endif()
+endforeach()
diff --git a/Tests/RunCMake/project/RunCMakeTest.cmake b/Tests/RunCMake/project/RunCMakeTest.cmake
index e9fb929..3a8ad4b 100644
--- a/Tests/RunCMake/project/RunCMakeTest.cmake
+++ b/Tests/RunCMake/project/RunCMakeTest.cmake
@@ -15,6 +15,7 @@
 run_cmake(ProjectHomepage)
 run_cmake(ProjectHomepage2)
 run_cmake(ProjectHomepageNoArg)
+run_cmake(ProjectTwice)
 run_cmake(VersionAndLanguagesEmpty)
 run_cmake(VersionEmpty)
 run_cmake(VersionInvalid)
diff --git a/Utilities/Release/upload_release.cmake b/Utilities/Release/upload_release.cmake
index 1edcd65..bbc7437 100644
--- a/Utilities/Release/upload_release.cmake
+++ b/Utilities/Release/upload_release.cmake
@@ -1,6 +1,6 @@
 set(CTEST_RUN_CURRENT_SCRIPT 0)
 if(NOT VERSION)
- set(VERSION 3.12)
+ set(VERSION 3.13)
 endif()
 if(NOT DEFINED PROJECT_PREFIX)
   set(PROJECT_PREFIX cmake-${VERSION})