[cmake] Change how rcfile details are printed

Print our verbose build settings when we actually run the build, not
during CMake configuration. This is nicer and more accurate anyway,
but will soon be required since Bazel loads MODULE.bazel more eagerly
than WORKSPACE.bazel and the override_repository generated files do
not yet upon CMake configuration, only upon CMake generation.

CMakeLists.txt

@@ -562,11 +562,6 @@ find_package(Git)
 
 set(GIT_DIR "${PROJECT_SOURCE_DIR}/.git")
 
-execute_process(
-  COMMAND "${Bazel_EXECUTABLE}" info --announce_rc
-  WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/drake_build_cwd"
-)
-
 set(GENERATE_DRAKE_VERSION_ARGS)
 if(DEFINED DRAKE_VERSION_OVERRIDE)
   list(APPEND GENERATE_DRAKE_VERSION_ARGS

cmake/bazel.rc.in

@@ -4,6 +4,9 @@
 # The scratch directory Bazel will use for the build.
 startup --output_base="@BAZEL_OUTPUT_BASE@"
 
+# Be verbose.
+common --announce_rc
+
 # Inherit Drake's default options.
 @BAZELRC_IMPORT@