build: Limit recursion to speed up configuration in slow filesystems with many files

build-support/custom-modules/ns3-executables.cmake

@@ -168,8 +168,20 @@ function(scan_python_examples path)
     return()
   endif()
 
-  # Search for python examples
-  file(GLOB_RECURSE python_examples ${path}/*.py)
+  # Search for example scripts in the directory and its immediate children
+  # directories
+  set(python_examples)
+  file(GLOB examples_subdirs LIST_DIRECTORIES TRUE ${path}/*)
+  foreach(subdir ${path} ${examples_subdirs})
+    if(NOT (IS_DIRECTORY ${subdir}))
+      continue()
+    endif()
+    file(GLOB python_examples_subdir ${subdir}/*.py)
+    list(APPEND python_examples ${python_examples_subdir})
+  endforeach()
+
+  # Add example scripts to the list
+  list(REMOVE_DUPLICATES python_examples)
   foreach(python_example ${python_examples})
     if(NOT (${python_example} MATCHES "examples-to-run"))
       set(ns3-execs-py "${python_example};${ns3-execs-py}"

build-support/macros-and-definitions.cmake

@@ -320,10 +320,17 @@ macro(process_options)
   if("${CMAKE_FORMAT_PROGRAM}" STREQUAL "CMAKE_FORMAT_PROGRAM-NOTFOUND")
     message(${HIGHLIGHTED_STATUS} "Proceeding without cmake-format")
   else()
-    file(GLOB_RECURSE MODULES_CMAKE_FILES src/**/CMakeLists.txt
-         contrib/**/CMakeLists.txt examples/**/CMakeLists.txt
-         scratch/**/CMakeLists.txt
+    file(
+      GLOB
+      MODULES_CMAKE_FILES
+      src/**/CMakeLists.txt
+      contrib/**/CMakeLists.txt
+      src/**/examples/CMakeLists.txt
+      contrib/**/examples/CMakeLists.txt
+      examples/**/CMakeLists.txt
+      scratch/**/CMakeLists.txt
     )
+    file(GLOB_RECURSE SCRATCH_CMAKE_FILES scratch/**/CMakeLists.txt)
     file(
       GLOB
       INTERNAL_CMAKE_FILES
@@ -342,7 +349,7 @@ macro(process_options)
       COMMAND
         ${CMAKE_FORMAT_PROGRAM} -c
         ${PROJECT_SOURCE_DIR}/build-support/cmake-format-modules.yaml -i
-        ${MODULES_CMAKE_FILES}
+        ${MODULES_CMAKE_FILES} ${SCRATCH_CMAKE_FILES}
     )
     add_custom_target(
       cmake-format-check

ns3

@@ -657,7 +657,7 @@ def remove_file(file_to_remove, dry_run):
 def clean_cmake_artifacts(dry_run=False):
     remove_dir(out_dir, dry_run, "output")
 
-    cmake_cache_files = glob.glob("%s/**/CMakeCache.txt" % ns3_path, recursive=True)
+    cmake_cache_files = glob.glob("%s/**/CMakeCache.txt" % ns3_path)
     for cmake_cache_file in cmake_cache_files:
         dirname = os.path.dirname(cmake_cache_file)
         remove_dir(dirname, dry_run, "CMake cache")
@@ -707,7 +707,7 @@ def clean_vcpkg_artifacts(dry_run=False):
 
 def search_cmake_cache(build_profile):
     # Search for the CMake cache
-    cmake_cache_files = glob.glob("%s/**/CMakeCache.txt" % ns3_path, recursive=True)
+    cmake_cache_files = glob.glob("%s/**/CMakeCache.txt" % ns3_path)
     current_cmake_cache_folder = None
     current_cmake_generator = None