Presets: Only print presets variables for verbose log level or higher

Fixes: #26664

Help/release/4.0.rst

@@ -226,3 +226,9 @@ Other Changes
 
 * On AIX, ``SHARED`` library targets now produce a shared library archive
   by default.  See policy :policy:`CMP0182`.
+
+* The :option:`cmake --preset` command no longer outputs a summary of the
+  preset's CMake cache and environment variables by default.  That summary is
+  now only shown when the message log level is set to ``VERBOSE``, ``DEBUG``,
+  or ``TRACE`` via the   :option:`cmake --log-level` option or the
+  :variable:`CMAKE_MESSAGE_LOG_LEVEL` cache variable.

Source/cmake.cxx

@@ -2935,8 +2935,12 @@ int cmake::Run(std::vector<std::string> const& args, bool noconfigure)
     return -1;
   }
 #ifndef CMAKE_BOOTSTRAP
-  this->PrintPresetVariables();
-  this->PrintPresetEnvironment();
+  if (this->GetLogLevel() == Message::LogLevel::LOG_VERBOSE ||
+      this->GetLogLevel() == Message::LogLevel::LOG_DEBUG ||
+      this->GetLogLevel() == Message::LogLevel::LOG_TRACE) {
+    this->PrintPresetVariables();
+    this->PrintPresetEnvironment();
+  }
 #endif
 
   // In script mode we terminate after running the script.

Tests/RunCMake/CMakePresets/RunCMakeTest.cmake

@@ -76,6 +76,11 @@ function(run_cmake_presets name)
     set(_preset)
   endif()
 
+  set(_log_level)
+  if(CMakePresets_LOG_LEVEL)
+    set(_log_level "--log-level=${CMakePresets_LOG_LEVEL}")
+  endif()
+
   set(_make_program)
   if(RunCMake_MAKE_PROGRAM)
     set(_make_program -DCMAKE_MAKE_PROGRAM=${RunCMake_MAKE_PROGRAM})
@@ -88,6 +93,7 @@ function(run_cmake_presets name)
     ${_make_program}
     ${_unused_cli}
     ${_preset}
+    ${_log_level}
     ${ARGN}
     )
   run_cmake(${name})
@@ -192,6 +198,7 @@ unset(ENV{TEST_D_ENV_REF})
 set(ENV{TEST_ENV_OVERRIDE} "This environment variable will be overridden")
 set(ENV{TEST_PENV} "Process environment variable")
 set(ENV{TEST_ENV_REF_PENV} "suffix")
+set(CMakePresets_LOG_LEVEL "verbose")
 run_cmake_presets(Good "-DTEST_OVERRIDE_1=Overridden value" "-DTEST_OVERRIDE_2:STRING=Overridden value" -C "${RunCMake_SOURCE_DIR}/CacheOverride.cmake" "-UTEST_UNDEF")
 unset(ENV{TEST_ENV_OVERRIDE})
 unset(ENV{TEST_PENV})
@@ -209,6 +216,7 @@ if(WIN32)
 endif()
 set(CMakePresets_FILE "${RunCMake_SOURCE_DIR}/GoodBOM.json.in")
 run_cmake_presets(GoodBOM)
+unset(CMakePresets_LOG_LEVEL)
 set(CMakePresets_FILE "${RunCMake_SOURCE_DIR}/CMakePresets.json.in")
 file(REMOVE_RECURSE ${RunCMake_BINARY_DIR}/GoodBinaryCmdLine-build)
 run_cmake_presets(GoodBinaryCmdLine -B ${RunCMake_BINARY_DIR}/GoodBinaryCmdLine-build)