Merge branch 'upstream-loguru' into HEAD

# By loguru Upstream
* upstream-loguru:
  loguru 2023-05-18 (310ce0cd)

ThirdParty/loguru/vtkloguru/CMakeLists.txt

@@ -5,10 +5,24 @@ set(headers
 set(sources
   loguru.cpp)
 
+include(CheckIncludeFile)
+check_include_file("<cxxabi.h>" VTK_LOGURU_HAVE_CXXABI_H)
+check_include_file("<dlfcn.h>" VTK_LOGURU_HAVE_DLFCN_H)
+check_include_file("<execinfo.h>" VTK_LOGURU_HAVE_EXECINFO_H)
+
+set(loguru_have_stacktraces 0)
+if (VTK_LOGURU_HAVE_CXXABI_H AND VTK_LOGURU_HAVE_DLFCN_H AND VTK_LOGURU_HAVE_EXECINFO_H)
+  set(loguru_have_stacktraces 1)
+endif ()
+
 vtk_module_add_module(VTK::loguru
   SOURCES ${sources}
   HEADERS ${headers}
   HEADERS_SUBDIR "vtkloguru")
+vtk_module_definitions(VTK::loguru
+  PRIVATE
+    "LOGURU_SCOPE_TIME_PRECISION=${VTK_LOGGING_TIME_PRECISION}"
+    "LOGURU_STACKTRACES=$<BOOL:${loguru_have_stacktraces}>")
 
 include(GenerateExportHeader)
 generate_export_header(loguru
@@ -16,8 +30,8 @@ generate_export_header(loguru
   EXPORT_FILE_NAME vtkloguru_export.h)
 
 vtk_module_find_package(PACKAGE Threads)
-vtk_module_link(VTK::loguru PRIVATE Threads::Threads ${CMAKE_DL_LIBS})
+vtk_module_link(VTK::loguru PRIVATE Threads::Threads)
 
-set_source_files_properties(loguru.cpp
-    PROPERTIES
-    COMPILE_DEFINITIONS "LOGURU_SCOPE_TIME_PRECISION=${VTK_LOGGING_TIME_PRECISION}")
+if (loguru_have_stacktraces)
+  vtk_module_link(VTK::loguru PRIVATE ${CMAKE_DL_LIBS})
+endif ()