Modules: Fix CMP0159 warnings in modules when tracing

Closes: #25829

Modules/CMakeDetermineCompilerABI.cmake

@@ -89,7 +89,10 @@ function(CMAKE_DETERMINE_COMPILER_ABI lang src)
     # Load the resulting information strings.
     if(CMAKE_${lang}_ABI_COMPILED)
       message(CHECK_PASS "done")
+      cmake_policy(PUSH)
+      cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
       file(STRINGS "${BIN}" ABI_STRINGS LIMIT_COUNT 32 REGEX "INFO:[A-Za-z0-9_]+\\[[^]]*\\]")
+      cmake_policy(POP)
       set(ABI_SIZEOF_DPTR "NOTFOUND")
       set(ABI_BYTE_ORDER "NOTFOUND")
       set(ABI_NAME "NOTFOUND")

Modules/CMakeDetermineCompilerId.cmake

@@ -919,9 +919,12 @@ function(CMAKE_DETERMINE_COMPILER_ID_CHECK lang file)
     set(SIMULATE_VERSION)
     set(CMAKE_${lang}_COMPILER_ID_STRING_REGEX ".?I.?N.?F.?O.?:.?[A-Za-z0-9_]+\\[[^]]*\\]")
     foreach(encoding "" "ENCODING;UTF-16LE" "ENCODING;UTF-16BE")
+      cmake_policy(PUSH)
+      cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
       file(STRINGS "${file}" CMAKE_${lang}_COMPILER_ID_STRINGS
         LIMIT_COUNT 38 ${encoding}
         REGEX "${CMAKE_${lang}_COMPILER_ID_STRING_REGEX}")
+      cmake_policy(POP)
       if(NOT CMAKE_${lang}_COMPILER_ID_STRINGS STREQUAL "")
         break()
       endif()

Modules/CMakeVerifyManifest.cmake

@@ -31,7 +31,10 @@ found in the .manifest file.
 # it will put the list of versions found into the variable
 # specified by list_var
 function(crt_version file list_var)
+  cmake_policy(PUSH)
+  cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
   file(STRINGS "${file}" strings REGEX "Microsoft.VC...CRT" NEWLINE_CONSUME)
+  cmake_policy(POP)
   foreach(s ${strings})
     set(has_match 1)
     string(REGEX

Modules/CheckTypeSize.cmake

@@ -92,6 +92,7 @@ include_guard(GLOBAL)
 
 block(SCOPE_FOR POLICIES)
 cmake_policy(SET CMP0054 NEW)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
 
 #-----------------------------------------------------------------------------
 # Helper function.  DO NOT CALL DIRECTLY.

Modules/FindALSA.cmake

@@ -43,6 +43,9 @@ The following cache variables may also be set:
   the absolute path of the asound library
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 find_path(ALSA_INCLUDE_DIR NAMES alsa/asoundlib.h
           DOC "The ALSA (asound) include directory"
 )
@@ -74,3 +77,5 @@ if(ALSA_FOUND)
 endif()
 
 mark_as_advanced(ALSA_INCLUDE_DIR ALSA_LIBRARY)
+
+cmake_policy(POP)

Modules/FindArmadillo.cmake

@@ -34,6 +34,9 @@ This module sets the following variables:
   ARMADILLO_VERSION_NAME - name of the version (ex: "Antipodean Antileech")
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 find_path(ARMADILLO_INCLUDE_DIR
   NAMES armadillo
   PATHS "$ENV{ProgramFiles}/Armadillo/include"
@@ -133,3 +136,5 @@ unset(_ARMA_USE_ARPACK)
 unset(_ARMA_USE_HDF5)
 unset(_ARMA_CONFIG_CONTENTS)
 unset(_ARMA_HEADER_CONTENTS)
+
+cmake_policy(POP)

Modules/FindBZip2.cmake

@@ -55,6 +55,9 @@ The following variables are provided for backward compatibility:
     Superseded by ``BZIP2_VERSION``.
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 set(_BZIP2_PATHS PATHS
   "[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\Bzip2;InstallPath]"
   )
@@ -120,3 +123,5 @@ if (BZIP2_FOUND)
 endif ()
 
 mark_as_advanced(BZIP2_INCLUDE_DIR)
+
+cmake_policy(POP)

Modules/FindBoost.cmake

@@ -387,6 +387,7 @@ include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
 cmake_policy(PUSH)
 cmake_policy(SET CMP0057 NEW) # if IN_LIST
 cmake_policy(SET CMP0102 NEW) # if mark_as_advanced(non_cache_var)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
 
 function(_boost_get_existing_target component target_var)
   set(names "${component}")

Modules/FindCURL.cmake

@@ -72,6 +72,9 @@ Hints
 
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
 
 if(NOT CURL_NO_CURL_CMAKE)
@@ -86,6 +89,8 @@ if(NOT CURL_NO_CURL_CMAKE)
     find_package_handle_standard_args(CURL HANDLE_COMPONENTS CONFIG_MODE)
     # The upstream curl package sets CURL_VERSION, not CURL_VERSION_STRING.
     set(CURL_VERSION_STRING "${CURL_VERSION}")
+
+    cmake_policy(POP)
     return()
   endif()
 endif()
@@ -241,3 +246,5 @@ if(CURL_FOUND)
 
   endif()
 endif()
+
+cmake_policy(POP)

Modules/FindCups.cmake

@@ -41,6 +41,9 @@ The following cache variables may also be set:
   the directory containing the Cups headers
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 find_path(CUPS_INCLUDE_DIR cups/cups.h )
 
 find_library(CUPS_LIBRARIES NAMES cups )
@@ -98,3 +101,5 @@ if (CUPS_FOUND)
             INTERFACE_INCLUDE_DIRECTORIES "${CUPS_INCLUDE_DIR}")
     endif ()
 endif ()
+
+cmake_policy(POP)

Modules/FindEXPAT.cmake

@@ -41,6 +41,9 @@ Hints
 
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 find_package(PkgConfig QUIET)
 
 pkg_check_modules(PC_EXPAT QUIET expat)
@@ -156,3 +159,5 @@ if(EXPAT_FOUND)
 endif()
 
 mark_as_advanced(EXPAT_INCLUDE_DIR EXPAT_LIBRARY)
+
+cmake_policy(POP)

Modules/FindFontconfig.cmake

@@ -34,6 +34,8 @@ This will define the following variables in your project:
 
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
 
 # use pkg-config to get the directories and then use these values
 # in the FIND_PATH() and FIND_LIBRARY() calls
@@ -101,3 +103,5 @@ if(Fontconfig_FOUND)
   set(Fontconfig_LIBRARIES ${Fontconfig_LIBRARY})
   set(Fontconfig_INCLUDE_DIRS ${Fontconfig_INCLUDE_DIR})
 endif()
+
+cmake_policy(POP)

Modules/FindFreetype.cmake

@@ -47,6 +47,9 @@ The user may set the environment variable ``FREETYPE_DIR`` to the root
 directory of a Freetype installation.
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 # Created by Eric Wing.
 # Modifications by Alexander Neundorf.
 # This file has been renamed to "FindFreetype.cmake" instead of the correct
@@ -202,3 +205,5 @@ if(Freetype_FOUND)
     endif()
   endif()
 endif()
+
+cmake_policy(POP)

Modules/FindGDAL.cmake

@@ -72,6 +72,9 @@ The following variables may be set to modify the search strategy:
 #
 #include "gdal.h"
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 find_path(GDAL_INCLUDE_DIR gdal.h
   HINTS
     ENV GDAL_DIR
@@ -197,3 +200,5 @@ if (GDAL_FOUND)
             INTERFACE_INCLUDE_DIRECTORIES "${GDAL_INCLUDE_DIR}")
     endif ()
 endif ()
+
+cmake_policy(POP)

Modules/FindGIF.cmake

@@ -46,6 +46,9 @@ Hints
 ``./configure --prefix=$GIF_DIR``.
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 # Created by Eric Wing.
 # Modifications by Alexander Neundorf, Ben Campbell
 
@@ -126,3 +129,5 @@ if(GIF_FOUND)
 endif()
 
 mark_as_advanced(GIF_INCLUDE_DIR GIF_LIBRARY)
+
+cmake_policy(POP)

Modules/FindGLEW.cmake

@@ -223,7 +223,10 @@ endif()
 
 # Read version from GL/glew.h file
 if(EXISTS "${GLEW_INCLUDE_DIR}/GL/glew.h")
+  cmake_policy(PUSH)
+  cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
   file(STRINGS "${GLEW_INCLUDE_DIR}/GL/glew.h" _contents REGEX "^VERSION_.+ [0-9]+")
+  cmake_policy(POP)
   if(_contents)
     string(REGEX REPLACE ".*VERSION_MAJOR[ \t]+([0-9]+).*" "\\1" GLEW_VERSION_MAJOR "${_contents}")
     string(REGEX REPLACE ".*VERSION_MINOR[ \t]+([0-9]+).*" "\\1" GLEW_VERSION_MINOR "${_contents}")

Modules/FindGSL.cmake

@@ -59,6 +59,9 @@ help this module find the correct files::
 
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
 
 #=============================================================================
@@ -229,3 +232,5 @@ if( GSL_FOUND AND NOT TARGET GSL::gsl )
       INTERFACE_LINK_LIBRARIES          GSL::gslcblas )
   endif()
 endif()
+
+cmake_policy(POP)

Modules/FindGTK2.cmake

@@ -175,7 +175,10 @@ Use the results:
 include(${CMAKE_CURRENT_LIST_DIR}/SelectLibraryConfigurations.cmake)
 
 function(_GTK2_GET_VERSION _OUT_major _OUT_minor _OUT_micro _gtkversion_hdr)
+    cmake_policy(PUSH)
+    cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
     file(STRINGS ${_gtkversion_hdr} _contents REGEX "#define GTK_M[A-Z]+_VERSION[ \t]+")
+    cmake_policy(POP)
     if(_contents)
         string(REGEX REPLACE ".*#define GTK_MAJOR_VERSION[ \t]+\\(([0-9]+)\\).*" "\\1" ${_OUT_major} "${_contents}")
         string(REGEX REPLACE ".*#define GTK_MINOR_VERSION[ \t]+\\(([0-9]+)\\).*" "\\1" ${_OUT_minor} "${_contents}")
@@ -211,7 +214,10 @@ endfunction()
 #=============================================================
 
 function(_GTK2_SIGCXX_GET_VERSION _OUT_major _OUT_minor _OUT_micro _sigcxxversion_hdr)
+    cmake_policy(PUSH)
+    cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
     file(STRINGS ${_sigcxxversion_hdr} _contents REGEX "#define SIGCXX_M[A-Z]+_VERSION[ \t]+")
+    cmake_policy(POP)
     if(_contents)
         string(REGEX REPLACE ".*#define SIGCXX_MAJOR_VERSION[ \t]+([0-9]+).*" "\\1" ${_OUT_major} "${_contents}")
         string(REGEX REPLACE ".*#define SIGCXX_MINOR_VERSION[ \t]+([0-9]+).*" "\\1" ${_OUT_minor} "${_contents}")

Modules/FindGTest.cmake

@@ -125,7 +125,10 @@ macro(__gtest_determine_windows_library_type _var)
     if(EXISTS "${${_var}}")
         file(TO_NATIVE_PATH "${${_var}}" _lib_path)
         get_filename_component(_name "${${_var}}" NAME_WE)
+        cmake_policy(PUSH)
+        cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
         file(STRINGS "${${_var}}" _match REGEX "${_name}\\.dll" LIMIT_COUNT 1)
+        cmake_policy(POP)
         if(NOT _match STREQUAL "")
             set(${_var}_TYPE SHARED PARENT_SCOPE)
         else()

Modules/FindHDF5.cmake

@@ -157,6 +157,9 @@ The following variables can be set to guide the search for HDF5 libraries and in
 include(${CMAKE_CURRENT_LIST_DIR}/SelectLibraryConfigurations.cmake)
 include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 # We haven't found HDF5 yet. Clear its state in case it is set in the parent
 # scope somewhere else. We can't rely on it because different components may
 # have been requested for this call.
@@ -1243,3 +1246,5 @@ if (HDF5_FIND_DEBUG)
 endif()
 unset(_lang)
 unset(_HDF5_NEED_TO_SEARCH)
+
+cmake_policy(POP)

Modules/FindHSPELL.cmake

@@ -25,6 +25,9 @@ Once done this will define
   HSPELL_MINOR_VERSION  - The minor version of Hspell
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 find_path(HSPELL_INCLUDE_DIR hspell.h)
 
 find_library(HSPELL_LIBRARIES NAMES hspell)
@@ -43,3 +46,5 @@ FIND_PACKAGE_HANDLE_STANDARD_ARGS(HSPELL
                                   VERSION_VAR HSPELL_VERSION_STRING)
 
 mark_as_advanced(HSPELL_INCLUDE_DIR HSPELL_LIBRARIES)
+
+cmake_policy(POP)

Modules/FindICU.cmake

@@ -89,6 +89,9 @@ Other variables one may set to control this module are::
   ICU_DEBUG - Set to ON to enable debug output from FindICU.
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 # Written by Roger Leigh <rleigh@codelibre.net>
 
 set(icu_programs
@@ -435,3 +438,5 @@ if(ICU_DEBUG)
 endif()
 
 unset(icu_programs)
+
+cmake_policy(POP)

Modules/FindIconv.cmake

@@ -75,6 +75,9 @@ The following cache variables may also be set:
 
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 include(${CMAKE_CURRENT_LIST_DIR}/CMakePushCheckState.cmake)
 if(CMAKE_C_COMPILER_LOADED)
   include(${CMAKE_CURRENT_LIST_DIR}/CheckCSourceCompiles.cmake)
@@ -180,3 +183,5 @@ if(Iconv_FOUND)
     set_property(TARGET Iconv::Iconv PROPERTY INTERFACE_LINK_LIBRARIES "${Iconv_LIBRARIES}")
   endif()
 endif()
+
+cmake_policy(POP)

Modules/FindIntl.cmake

@@ -82,6 +82,9 @@ The following cache variables may also be set:
   ``msgfmt``, etc.), use :module:`FindGettext`.
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 include(${CMAKE_CURRENT_LIST_DIR}/CMakePushCheckState.cmake)
 if(CMAKE_C_COMPILER_LOADED)
   include(${CMAKE_CURRENT_LIST_DIR}/CheckCSourceCompiles.cmake)
@@ -181,3 +184,5 @@ if(Intl_FOUND)
       INTERFACE_LINK_LIBRARIES "${Intl_LIBRARIES}")
   endif()
 endif()
+
+cmake_policy(POP)

Modules/FindJPEG.cmake

@@ -56,6 +56,9 @@ Obsolete variables
   where to find the JPEG library.
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 find_path(JPEG_INCLUDE_DIR jpeglib.h)
 
 set(jpeg_names ${JPEG_NAMES} jpeg jpeg-static libjpeg libjpeg-static)
@@ -140,3 +143,5 @@ if(JPEG_FOUND)
 endif()
 
 mark_as_advanced(JPEG_LIBRARY JPEG_INCLUDE_DIR)
+
+cmake_policy(POP)

Modules/FindJasper.cmake

@@ -42,6 +42,9 @@ The following cache variables may also be set:
   where to find the Jasper library (debug).
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 find_path(JASPER_INCLUDE_DIR jasper/jasper.h)
 mark_as_advanced(JASPER_INCLUDE_DIR)
 
@@ -88,3 +91,5 @@ if(JASPER_FOUND)
     endif()
   endif()
 endif()
+
+cmake_policy(POP)

Modules/FindLTTngUST.cmake

@@ -37,6 +37,9 @@ This module sets the following
   ``TRUE`` if the ``tracelog()`` API is available in the system's LTTng-UST
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 find_path(LTTNGUST_INCLUDE_DIRS NAMES lttng/tracepoint.h)
 find_library(LTTNGUST_LIBRARIES NAMES lttng-ust)
 
@@ -100,3 +103,5 @@ find_package_handle_standard_args(LTTngUST FOUND_VAR LTTNGUST_FOUND
                                                 LTTNGUST_INCLUDE_DIRS
                                   VERSION_VAR LTTNGUST_VERSION_STRING)
 mark_as_advanced(LTTNGUST_LIBRARIES LTTNGUST_INCLUDE_DIRS)
+
+cmake_policy(POP)

Modules/FindLibArchive.cmake

@@ -31,6 +31,9 @@ The module defines the following ``IMPORTED`` targets:
 
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 find_path(LibArchive_INCLUDE_DIR
   NAMES archive.h
   PATHS
@@ -81,3 +84,5 @@ if(LibArchive_FOUND)
       INTERFACE_INCLUDE_DIRECTORIES "${LibArchive_INCLUDE_DIR}")
   endif ()
 endif()
+
+cmake_policy(POP)

Modules/FindLibLZMA.cmake

@@ -58,6 +58,9 @@ The following variables are provided for backward compatibility:
 
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 find_path(LIBLZMA_INCLUDE_DIR lzma.h )
 if(NOT LIBLZMA_LIBRARY)
   find_library(LIBLZMA_LIBRARY_RELEASE NAMES lzma liblzma NAMES_PER_DIR PATH_SUFFIXES lib)
@@ -140,3 +143,5 @@ if (LIBLZMA_FOUND)
         endif()
     endif()
 endif ()
+
+cmake_policy(POP)

Modules/FindLibXml2.cmake

@@ -52,6 +52,9 @@ The following cache variables may also be set:
   path to the LibXml2 library
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 # use pkg-config to get the directories and then use these values
 # in the find_path() and find_library() calls
 find_package(PkgConfig QUIET)
@@ -122,3 +125,5 @@ if(LIBXML2_XMLLINT_EXECUTABLE AND NOT TARGET LibXml2::xmllint)
   add_executable(LibXml2::xmllint IMPORTED)
   set_target_properties(LibXml2::xmllint PROPERTIES IMPORTED_LOCATION "${LIBXML2_XMLLINT_EXECUTABLE}")
 endif()
+
+cmake_policy(POP)

Modules/FindLibXslt.cmake

@@ -45,6 +45,9 @@ for using xslt):
   Contains the full path to the xsltproc executable if found.
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 # use pkg-config to get the directories and then use these values
 # in the find_path() and find_library() calls
 find_package(PkgConfig QUIET)
@@ -133,3 +136,5 @@ if(LIBXSLT_XSLTPROC_EXECUTABLE AND NOT TARGET LibXslt::xsltproc)
   add_executable(LibXslt::xsltproc IMPORTED)
   set_target_properties(LibXslt::xsltproc PROPERTIES IMPORTED_LOCATION "${LIBXSLT_XSLTPROC_EXECUTABLE}")
 endif()
+
+cmake_policy(POP)

Modules/FindLua.cmake

@@ -45,6 +45,7 @@ locations other than lua/
 
 cmake_policy(PUSH)  # Policies apply to functions at definition-time
 cmake_policy(SET CMP0012 NEW)  # For while(TRUE)
+cmake_policy(SET CMP0159 NEW)  # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
 
 unset(_lua_include_subdirs)
 unset(_lua_library_names)

Modules/FindLua51.cmake

@@ -26,6 +26,9 @@ This is because, the lua location is not standardized and may exist in
 locations other than lua/
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 find_path(LUA_INCLUDE_DIR lua.h
   HINTS
     ENV LUA_DIR
@@ -73,3 +76,5 @@ FIND_PACKAGE_HANDLE_STANDARD_ARGS(Lua51
                                   VERSION_VAR LUA_VERSION_STRING)
 
 mark_as_advanced(LUA_INCLUDE_DIR LUA_LIBRARIES LUA_LIBRARY LUA_MATH_LIBRARY)
+
+cmake_policy(POP)

Modules/FindMPI.cmake

@@ -265,6 +265,7 @@ Additionally, the following variables are deprecated:
 
 cmake_policy(PUSH)
 cmake_policy(SET CMP0057 NEW) # if IN_LIST
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
 
 include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
 find_package(PkgConfig QUIET)

Modules/FindMatlab.cmake

@@ -291,6 +291,7 @@ Reference
 
 cmake_policy(PUSH)
 cmake_policy(SET CMP0057 NEW) # if IN_LIST
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
 
 set(_FindMatlab_SELF_DIR "${CMAKE_CURRENT_LIST_DIR}")
 

Modules/FindOpenACC.cmake

@@ -70,6 +70,9 @@ If set, will the correct target accelerator flag set to the <target> will
 be returned with OpenACC_<lang>_FLAGS.
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 set(OpenACC_C_CXX_TEST_SOURCE
 "
 int main(void){
@@ -306,3 +309,5 @@ unset(OpenACC_C_CXX_TEST_SOURCE)
 unset(OpenACC_Fortran_TEST_SOURCE)
 unset(OpenACC_C_CXX_CHECK_VERSION_SOURCE)
 unset(OpenACC_Fortran_CHECK_VERSION_SOURCE)
+
+cmake_policy(POP)

Modules/FindOpenMP.cmake

@@ -96,6 +96,7 @@ cmake_policy(PUSH)
 cmake_policy(SET CMP0012 NEW) # if() recognizes numbers and booleans
 cmake_policy(SET CMP0054 NEW) # if() quoted variables not dereferenced
 cmake_policy(SET CMP0057 NEW) # if IN_LIST
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
 
 function(_OPENMP_FLAG_CANDIDATES LANG)
   if(NOT OpenMP_${LANG}_FLAG)

Modules/FindOpenSP.cmake

@@ -63,6 +63,9 @@ The following cache variables may also be set:
 
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 find_package(PkgConfig QUIET)
 if (PkgConfig_FOUND)
   pkg_check_modules(PC_OpenSP QUIET opensp)
@@ -158,3 +161,5 @@ set_package_properties(OpenSP PROPERTIES
   URL "http://openjade.sourceforge.net/doc/index.htm"
   DESCRIPTION "An SGML System Conforming to International Standard ISO 8879"
   )
+
+cmake_policy(POP)

Modules/FindOpenSSL.cmake

@@ -111,6 +111,9 @@ The following variables may be set to control search behavior:
   locations.  Useful on multi-lib systems.
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 macro(_OpenSSL_test_and_find_dependencies ssl_library crypto_library)
   unset(_OpenSSL_extra_static_deps)
   if(UNIX AND
@@ -792,3 +795,5 @@ unset(_OpenSSL_extra_static_deps)
 unset(_OpenSSL_has_dependency_dl)
 unset(_OpenSSL_has_dependency_threads)
 unset(_OpenSSL_has_dependency_zlib)
+
+cmake_policy(POP)

Modules/FindOpenSceneGraph.cmake

@@ -101,6 +101,9 @@ This module defines the following output variables:
   target_link_libraries(foo ${OPENSCENEGRAPH_LIBRARIES})
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 #
 # Naming convention:
 #  Local variables of the form _osg_foo
@@ -230,3 +233,5 @@ FIND_PACKAGE_HANDLE_STANDARD_ARGS(OpenSceneGraph
 unset(_osg_component_founds)
 
 set(OPENSCENEGRAPH_INCLUDE_DIRS ${OPENSCENEGRAPH_INCLUDE_DIR})
+
+cmake_policy(POP)

Modules/FindPNG.cmake

@@ -48,6 +48,9 @@ Since PNG depends on the ZLib compression library, none of the above
 will be defined unless ZLib can be found.
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 # Default install location on windows when installing from included cmake build
 # From FindZLIB.cmake
 set(_PNG_x86 "(x86)")
@@ -177,3 +180,5 @@ include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
 find_package_handle_standard_args(PNG
                                   REQUIRED_VARS PNG_LIBRARY PNG_PNG_INCLUDE_DIR
                                   VERSION_VAR PNG_VERSION_STRING)
+
+cmake_policy(POP)

Modules/FindPostgreSQL.cmake

@@ -93,6 +93,7 @@ is set regardless of the presence of the ``Server`` component in find_package ca
 
 cmake_policy(PUSH)
 cmake_policy(SET CMP0057 NEW) # if IN_LIST
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
 
 set(PostgreSQL_INCLUDE_PATH_DESCRIPTION "top-level directory containing the PostgreSQL include directories. E.g /usr/local/include/PostgreSQL/8.4 or C:/Program Files/PostgreSQL/8.4/include")
 set(PostgreSQL_INCLUDE_DIR_MESSAGE "Set the PostgreSQL_INCLUDE_DIR cmake cache entry to the ${PostgreSQL_INCLUDE_PATH_DESCRIPTION}")

Modules/FindProtobuf.cmake

@@ -218,6 +218,9 @@ Example:
         GENERATE_EXTENSIONS .grpc.pb.h .grpc.pb.cc)
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 function(protobuf_generate)
   set(_options APPEND_PATH DESCRIPTORS)
   set(_singleargs LANGUAGE OUT_VAR EXPORT_MACRO PROTOC_OUT_DIR PLUGIN PLUGIN_OPTIONS DEPENDENCIES)
@@ -782,3 +785,5 @@ foreach(Camel
     string(TOUPPER ${Camel} UPPER)
     set(${UPPER} ${${Camel}})
 endforeach()
+
+cmake_policy(POP)

Modules/FindPython/Support.cmake

@@ -20,6 +20,8 @@ cmake_policy (SET CMP0057 NEW)
 cmake_policy (SET CMP0124 NEW)
 # registry view behavior
 cmake_policy (SET CMP0134 NEW)
+# file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+cmake_policy(SET CMP0159 NEW)
 
 if (NOT DEFINED _PYTHON_PREFIX)
   message (FATAL_ERROR "FindPython: INTERNAL ERROR")

Modules/FindPythonLibs.cmake

@@ -48,6 +48,9 @@ get the currently active Python version by default with a consistent version
 of PYTHON_LIBRARIES.
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 cmake_policy(GET CMP0148 _FindPythonLibs_CMP0148)
 if(_FindPythonLibs_CMP0148 STREQUAL "NEW")
   message(FATAL_ERROR "The FindPythonLibs module has been removed by policy CMP0148.")
@@ -55,6 +58,7 @@ endif()
 
 if(_FindPythonLibs_testing)
   set(_FindPythonLibs_included TRUE)
+  cmake_policy(POP)
   return()
 endif()
 
@@ -410,3 +414,5 @@ extern \"C\" {
   execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different "${_filenameTmp}" "${_filename}" OUTPUT_QUIET ERROR_QUIET)
 
 endfunction()
+
+cmake_policy(POP)

Modules/FindQt3.cmake

@@ -34,6 +34,9 @@ Also defined, but not for general use are:
    library. This is only required by Qt3 on Windows.
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 # These are around for backwards compatibility
 # they will be set
 #  QT_WRAP_CPP, set true if QT_MOC_EXECUTABLE is found
@@ -47,6 +50,7 @@ if(QT4_FOUND)
     if(NOT Qt3_FIND_QUIETLY)
       message( STATUS    "Qt3 and Qt4 cannot be used together in one project.")
     endif()
+    cmake_policy(POP)
     return()
   endif()
 endif()
@@ -304,3 +308,5 @@ mark_as_advanced(
   QT_WRAP_CPP
   QT_WRAP_UI
   )
+
+cmake_policy(POP)

Modules/FindSDL.cmake

@@ -110,6 +110,9 @@ This needed to change because "proper" SDL convention is #include
 because not all systems place things in SDL/ (see FreeBSD).
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 find_path(SDL_INCLUDE_DIR SDL.h
   HINTS
     ENV SDLDIR
@@ -235,3 +238,5 @@ if(SDL_FOUND)
       INTERFACE_LINK_LIBRARIES "${SDL_LIBRARY}")
   endif()
 endif()
+
+cmake_policy(POP)

Modules/FindSDL_gfx.cmake

@@ -24,6 +24,9 @@ This module defines:
 ``./configure --prefix=$SDLDIR`` used in building SDL.
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 find_path(SDL_GFX_INCLUDE_DIRS
   NAMES
     SDL_framerate.h
@@ -84,3 +87,5 @@ if(SDL_gfx_FOUND)
       INTERFACE_LINK_LIBRARIES "${SDL_GFX_LIBRARIES}")
   endif()
 endif()
+
+cmake_policy(POP)

Modules/FindSDL_image.cmake

@@ -33,6 +33,9 @@ $SDLDIR is an environment variable that would correspond to the
 ./configure --prefix=$SDLDIR used in building SDL.
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 if(NOT SDL_IMAGE_INCLUDE_DIR AND SDLIMAGE_INCLUDE_DIR)
   set(SDL_IMAGE_INCLUDE_DIR ${SDLIMAGE_INCLUDE_DIR} CACHE PATH "directory cache
 entry initialized from old variable name")
@@ -95,3 +98,5 @@ set(SDLIMAGE_INCLUDE_DIR ${SDL_IMAGE_INCLUDE_DIRS})
 set(SDLIMAGE_FOUND ${SDL_IMAGE_FOUND})
 
 mark_as_advanced(SDL_IMAGE_LIBRARY SDL_IMAGE_INCLUDE_DIR)
+
+cmake_policy(POP)

Modules/FindSDL_mixer.cmake

@@ -33,6 +33,9 @@ $SDLDIR is an environment variable that would correspond to the
 ./configure --prefix=$SDLDIR used in building SDL.
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 if(NOT SDL_MIXER_INCLUDE_DIR AND SDLMIXER_INCLUDE_DIR)
   set(SDL_MIXER_INCLUDE_DIR ${SDLMIXER_INCLUDE_DIR} CACHE PATH "directory cache
 entry initialized from old variable name")
@@ -95,3 +98,5 @@ set(SDLMIXER_INCLUDE_DIR ${SDL_MIXER_INCLUDE_DIRS})
 set(SDLMIXER_FOUND ${SDL_MIXER_FOUND})
 
 mark_as_advanced(SDL_MIXER_LIBRARY SDL_MIXER_INCLUDE_DIR)
+
+cmake_policy(POP)

Modules/FindSDL_net.cmake

@@ -32,6 +32,9 @@ $SDLDIR is an environment variable that would correspond to the
 ./configure --prefix=$SDLDIR used in building SDL.
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 if(NOT SDL_NET_INCLUDE_DIR AND SDLNET_INCLUDE_DIR)
   set(SDL_NET_INCLUDE_DIR ${SDLNET_INCLUDE_DIR} CACHE PATH "directory cache
 entry initialized from old variable name")
@@ -94,3 +97,5 @@ set(SDLNET_INCLUDE_DIR ${SDL_NET_INCLUDE_DIRS})
 set(SDLNET_FOUND ${SDL_NET_FOUND})
 
 mark_as_advanced(SDL_NET_LIBRARY SDL_NET_INCLUDE_DIR)
+
+cmake_policy(POP)

Modules/FindSDL_sound.cmake

@@ -84,6 +84,9 @@ parses the error output for known symbol names to figure out which
 libraries are needed.
 #]]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 set(SDL_SOUND_EXTRAS "" CACHE STRING "SDL_sound extra flags")
 mark_as_advanced(SDL_SOUND_EXTRAS)
 
@@ -371,3 +374,5 @@ include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
 FIND_PACKAGE_HANDLE_STANDARD_ARGS(SDL_sound
                                   REQUIRED_VARS SDL_SOUND_LIBRARY SDL_SOUND_INCLUDE_DIR
                                   VERSION_VAR SDL_SOUND_VERSION_STRING)
+
+cmake_policy(POP)

Modules/FindSDL_ttf.cmake

@@ -32,6 +32,9 @@ $SDLDIR is an environment variable that would correspond to the
 ./configure --prefix=$SDLDIR used in building SDL.
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 if(NOT SDL_TTF_INCLUDE_DIR AND SDLTTF_INCLUDE_DIR)
   set(SDL_TTF_INCLUDE_DIR ${SDLTTF_INCLUDE_DIR} CACHE PATH "directory cache
 entry initialized from old variable name")
@@ -94,3 +97,5 @@ set(SDLTTF_INCLUDE_DIR ${SDL_TTF_INCLUDE_DIRS})
 set(SDLTTF_FOUND ${SDL_TTF_FOUND})
 
 mark_as_advanced(SDL_TTF_LIBRARY SDL_TTF_INCLUDE_DIR)
+
+cmake_policy(POP)

Modules/FindSQLite3.cmake

@@ -32,6 +32,9 @@ This module will set the following variables if found:
 
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 find_package(PkgConfig QUIET)
 pkg_check_modules(PC_SQLite3 QUIET sqlite3)
 
@@ -75,3 +78,5 @@ if(SQLite3_FOUND)
             INTERFACE_INCLUDE_DIRECTORIES "${SQLite3_INCLUDE_DIR}")
     endif()
 endif()
+
+cmake_policy(POP)

Modules/FindTIFF.cmake

@@ -67,6 +67,7 @@ The following cache variables may also be set:
 
 cmake_policy(PUSH)
 cmake_policy(SET CMP0057 NEW) # if IN_LIST
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
 
 set(_TIFF_args)
 if (TIFF_FIND_VERSION)

Modules/FindVulkan.cmake

@@ -221,6 +221,7 @@ environment.
 
 cmake_policy(PUSH)
 cmake_policy(SET CMP0057 NEW)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
 
 # Provide compatibility with a common invalid component request that
 # was silently ignored prior to CMake 3.24.

Modules/FindXalanC.cmake

@@ -44,6 +44,9 @@ The following cache variables may also be set:
   the Xalan library
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 # Written by Roger Leigh <rleigh@codelibre.net>
 
 function(_XalanC_GET_VERSION  version_hdr)
@@ -153,3 +156,5 @@ if(XalanC_FOUND)
     set_target_properties(XalanC::XalanC PROPERTIES INTERFACE_LINK_LIBRARIES XercesC::XercesC)
   endif()
 endif()
+
+cmake_policy(POP)

Modules/FindXercesC.cmake

@@ -47,6 +47,9 @@ The following cache variables may also be set:
   Debug and Release variants are found separately.
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 # Written by Roger Leigh <rleigh@codelibre.net>
 
 function(_XercesC_GET_VERSION  version_hdr)
@@ -149,3 +152,5 @@ if(XercesC_FOUND)
     endif()
   endif()
 endif()
+
+cmake_policy(POP)

Modules/FindZLIB.cmake

@@ -84,6 +84,9 @@ module where to look.
 
 #]=======================================================================]
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 if(ZLIB_FIND_COMPONENTS AND NOT ZLIB_FIND_QUIETLY)
   message(AUTHOR_WARNING
     "ZLIB does not provide any COMPONENTS.  Calling\n"
@@ -232,3 +235,5 @@ if(ZLIB_FOUND)
       endif()
     endif()
 endif()
+
+cmake_policy(POP)

Modules/FortranCInterface/Detect.cmake

@@ -76,8 +76,11 @@ endif()
 # Load symbols from INFO:symbol[] strings in the executable.
 set(FortranCInterface_SYMBOLS)
 if(FortranCInterface_EXE)
+  cmake_policy(PUSH)
+  cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
   file(STRINGS "${FortranCInterface_EXE}" _info_strings
     LIMIT_COUNT 8 REGEX "INFO:[A-Za-z0-9_]+\\[[^]]*\\]")
+  cmake_policy(POP)
   foreach(info ${_info_strings})
     if("${info}" MATCHES "INFO:symbol\\[([^]]*)\\]")
       list(APPEND FortranCInterface_SYMBOLS ${CMAKE_MATCH_1})

Modules/Internal/FeatureTesting.cmake

@@ -52,8 +52,11 @@ macro(_record_compiler_features lang compile_flags feature_list)
 
   if (_result EQUAL 0)
     if(EXISTS "${CMAKE_BINARY_DIR}/CMakeFiles/feature_tests.bin")
+      cmake_policy(PUSH)
+      cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
       file(STRINGS "${CMAKE_BINARY_DIR}/CMakeFiles/feature_tests.bin"
         features REGEX "${lang}_FEATURE:.*")
+      cmake_policy(POP)
       foreach(info ${features})
         string(REPLACE "${lang}_FEATURE:" "" info ${info})
         string(SUBSTRING ${info} 0 1 has_feature)

Modules/KDE3Macros.cmake

@@ -213,7 +213,10 @@ macro(KDE3_AUTOMOC)
 
     if (EXISTS ${_abs_FILE} AND NOT _skip)
 
+      cmake_policy(PUSH)
+      cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
       file(STRINGS ${_abs_FILE} _match REGEX "#include +[^ ]+\\.moc[\">]")
+      cmake_policy(POP)
 
       get_filename_component(_abs_PATH ${_abs_FILE} PATH)
 

Modules/Platform/Android-Determine.cmake

@@ -32,6 +32,7 @@ endif()
 
 cmake_policy(PUSH)
 cmake_policy(SET CMP0057 NEW) # if IN_LIST
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
 
 # If using Android tools for Visual Studio, compile a sample project to get the
 # NDK path and set the processor from the generator platform.

Modules/Platform/Android/Determine-Compiler-NDK.cmake

@@ -46,6 +46,9 @@ endif()
 #     -target <triple>
 #     -gcc-toolchain <ndk>/toolchains/<triple-or-arch>-<gcc-version>
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 # Glob available toolchains in the NDK, restricted by any version request.
 if(CMAKE_ANDROID_NDK_TOOLCHAIN_VERSION STREQUAL "clang")
   set(_ANDROID_TOOL_PATTERNS "*-clang" "*-clang[0-9].[0-9]")
@@ -269,3 +272,5 @@ unset(_ANDROID_TOOL_PREFIX)
 unset(_ANDROID_TOOL_CLANG_NAME)
 unset(_ANDROID_TOOL_CLANG_VERS)
 unset(_ANDROID_TOOL_LLVM_NAME)
+
+cmake_policy(POP)

Modules/Platform/CrayLinuxEnvironment.cmake

@@ -6,7 +6,10 @@ if(DEFINED ENV{CRAYOS_VERSION})
 elseif(DEFINED ENV{XTOS_VERSION})
   set(CMAKE_SYSTEM_VERSION "$ENV{XTOS_VERSION}")
 elseif(EXISTS /etc/opt/cray/release/cle-release)
+  cmake_policy(PUSH)
+  cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
   file(STRINGS /etc/opt/cray/release/cle-release release REGEX "^RELEASE=.*")
+  cmake_policy(POP)
   string(REGEX REPLACE "^RELEASE=(.*)$" "\\1" CMAKE_SYSTEM_VERSION "${release}")
   unset(release)
 elseif(EXISTS /etc/opt/cray/release/clerelease)

Modules/Platform/Darwin-Initialize.cmake

@@ -159,7 +159,10 @@ function(_apple_resolve_supported_archs_for_sdk_from_system_lib sdk_path ret ret
   # Newer SDKs ship text based dylib stub files which contain the architectures supported by the
   # library in text form.
   if(EXISTS "${system_lib_tbd_path}")
+    cmake_policy(PUSH)
+    cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
     file(STRINGS "${system_lib_tbd_path}" tbd_lines REGEX "^(archs|targets): +\\[.+\\]")
+    cmake_policy(POP)
     if(NOT tbd_lines)
       set(${ret_failed} TRUE PARENT_SCOPE)
       return()

Modules/ProcessorCount.cmake

@@ -207,7 +207,10 @@ function(ProcessorCount var)
     # Systems with /proc/cpuinfo:
     set(cpuinfo_file /proc/cpuinfo)
     if(EXISTS "${cpuinfo_file}")
+      cmake_policy(PUSH)
+      cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
       file(STRINGS "${cpuinfo_file}" procs REGEX "^processor.: [0-9]+$")
+      cmake_policy(POP)
       list(LENGTH procs count)
       #message("ProcessorCount: trying cpuinfo '${cpuinfo_file}'")
     endif()

Modules/TestBigEndian.cmake

@@ -91,12 +91,17 @@ macro(__TEST_BIG_ENDIAN_LEGACY_IMPL VARIABLE)
 
       if(HAVE_${VARIABLE})
 
+        cmake_policy(PUSH)
+        cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
         file(STRINGS "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/TestEndianess.bin"
             CMAKE_TEST_ENDIANESS_STRINGS_LE LIMIT_COUNT 1 REGEX "THIS IS LITTLE ENDIAN")
 
         file(STRINGS "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/TestEndianess.bin"
             CMAKE_TEST_ENDIANESS_STRINGS_BE LIMIT_COUNT 1 REGEX "THIS IS BIG ENDIAN")
 
+        cmake_policy(POP)
+
         # on mac, if there are universal binaries built both will be true
         # return the result depending on the machine on which cmake runs
         if(CMAKE_TEST_ENDIANESS_STRINGS_BE  AND  CMAKE_TEST_ENDIANESS_STRINGS_LE)

Modules/UseJava/ClearClassFiles.cmake

@@ -3,6 +3,9 @@
 
 # This script deletes compiled Java class files.
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
+
 if(CMAKE_JAVA_CLASS_OUTPUT_PATH)
   if(EXISTS "${CMAKE_JAVA_CLASS_OUTPUT_PATH}/java_class_filelist")
     file(STRINGS "${CMAKE_JAVA_CLASS_OUTPUT_PATH}/java_class_filelist" classes)
@@ -15,3 +18,5 @@ if(CMAKE_JAVA_CLASS_OUTPUT_PATH)
 else()
   message(FATAL_ERROR "Can't find CMAKE_JAVA_CLASS_OUTPUT_PATH")
 endif()
+
+cmake_policy(POP)

Modules/UseSWIG.cmake

@@ -466,7 +466,10 @@ function(SWIG_GET_EXTRA_OUTPUT_FILES language outfiles generatedpath infile)
 
     # try to get module name from "%module foo" syntax
     if ( EXISTS "${infile}" )
+      cmake_policy(PUSH)
+      cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
       file ( STRINGS "${infile}" module_basename REGEX "[ ]*%module[ ]*[a-zA-Z0-9_]+.*" )
+      cmake_policy(POP)
     endif ()
     if ( module_basename )
       string ( REGEX REPLACE "[ ]*%module[ ]*([a-zA-Z0-9_]+).*" "\\1" module_basename "${module_basename}" )
@@ -474,7 +477,10 @@ function(SWIG_GET_EXTRA_OUTPUT_FILES language outfiles generatedpath infile)
     else ()
       # try to get module name from "%module (options=...) foo" syntax
       if ( EXISTS "${infile}" )
+        cmake_policy(PUSH)
+        cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
         file ( STRINGS "${infile}" module_basename REGEX "[ ]*%module[ ]*\\(.*\\)[ ]*[a-zA-Z0-9_]+.*" )
+        cmake_policy(POP)
       endif ()
       if ( module_basename )
         string ( REGEX REPLACE "[ ]*%module[ ]*\\(.*\\)[ ]*([a-zA-Z0-9_]+).*" "\\1" module_basename "${module_basename}" )