Draft: Merge the latest contrib installation into master

Add a patch setting proper build targets for clang for aarch64; Add congiguration flags for gcc similiar to CMS; set LLVM_ENABLE_ASSERTIONS=OFF

cmake/modules/ExternalProject.cmake

@@ -621,6 +621,10 @@ function(_ep_write_extractfile_script script_filename name filename directory)
     set(args xfz)
   endif()
 
+  if(filename MATCHES "(\\.|=)tar\\.xz$")
+    set(args xfJ)
+  endif()
+
   if(filename MATCHES "(\\.|=)tar$")
     set(args xf)
   endif()
@@ -1243,6 +1247,11 @@ function(_ep_add_download_command name)
   set(comment)
   set(work_dir)
 
+  set(REPOSITORY_INFO_DIR Modules)
+  if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.25)
+    set(REPOSITORY_INFO_DIR Modules/ExternalProject)
+  endif()
+
   if(cmd_set)
     set(work_dir ${download_dir})
   elseif(cvs_repository)
@@ -1262,7 +1271,7 @@ function(_ep_add_download_command name)
     set(module ${cvs_module})
     set(tag ${cvs_tag})
     configure_file(
-      "${CMAKE_ROOT}/Modules/RepositoryInfo.txt.in"
+      "${CMAKE_ROOT}/${REPOSITORY_INFO_DIR}/RepositoryInfo.txt.in"
       "${stamp_dir}/${name}-cvsinfo.txt"
       @ONLY
       )
@@ -1287,7 +1296,7 @@ function(_ep_add_download_command name)
     set(module)
     set(tag ${svn_revision})
     configure_file(
-      "${CMAKE_ROOT}/Modules/RepositoryInfo.txt.in"
+      "${CMAKE_ROOT}/${REPOSITORY_INFO_DIR}/RepositoryInfo.txt.in"
       "${stamp_dir}/${name}-svninfo.txt"
       @ONLY
       )
@@ -1336,7 +1345,7 @@ function(_ep_add_download_command name)
     set(module)
     set(tag)
     configure_file(
-      "${CMAKE_ROOT}/Modules/RepositoryInfo.txt.in"
+      "${CMAKE_ROOT}/${REPOSITORY_INFO_DIR}/RepositoryInfo.txt.in"
       "${stamp_dir}/${name}-gitinfo.txt"
       @ONLY
       )
@@ -1376,7 +1385,7 @@ function(_ep_add_download_command name)
     set(module)
     set(tag)
     configure_file(
-      "${CMAKE_ROOT}/Modules/RepositoryInfo.txt.in"
+      "${CMAKE_ROOT}/${REPOSITORY_INFO_DIR}/RepositoryInfo.txt.in"
       "${stamp_dir}/${name}-hginfo.txt"
       @ONLY
       )
@@ -1414,7 +1423,7 @@ function(_ep_add_download_command name)
     set(module "${url}")
     set(tag "${hash}")
     configure_file(
-      "${CMAKE_ROOT}/Modules/RepositoryInfo.txt.in"
+      "${CMAKE_ROOT}/${REPOSITORY_INFO_DIR}/RepositoryInfo.txt.in"
       "${stamp_dir}/${name}-urlinfo.txt"
       @ONLY
       )
@@ -1430,11 +1439,11 @@ function(_ep_add_download_command name)
         if("x${fname}" STREQUAL "x")
           string(REGEX MATCH "[^/\\?]*$" fname "${url}")
         endif()
-        if(NOT "${fname}" MATCHES "(\\.|=)(bz2|tar|tgz|tar\\.gz|zip)$")
-          string(REGEX MATCH "([^/\\?]+(\\.|=)(bz2|tar|tgz|tar\\.gz|zip))/.*$" match_result "${url}")
+        if(NOT "${fname}" MATCHES "(\\.|=)(bz2|tar|tgz|tar\\.gz|zip|tar\\.xz)$")
+          string(REGEX MATCH "([^/\\?]+(\\.|=)(bz2|tar|tgz|tar\\.gz|zip|tar\\.xz))/.*$" match_result "${url}")
           set(fname "${CMAKE_MATCH_1}")
         endif()
-        if(NOT "${fname}" MATCHES "(\\.|=)(bz2|tar|tgz|tar\\.gz|zip)$")
+        if(NOT "${fname}" MATCHES "(\\.|=)(bz2|tar|tgz|tar\\.gz|zip|tar\\.xz)$")
           message(FATAL_ERROR "Could not extract tarball filename from url:\n  ${url}")
         endif()
         string(REPLACE ";" "-" fname "${fname}")