Drop the internal vendored version of TinyXML2

CMakeLists.txt

@@ -32,16 +32,6 @@ if(WIN32)
     false)
 endif()
 
-#--------------------------------------
-# Option: Should we use our internal copy of tinyxml2?
-if(UNIX OR APPLE)
-  option(USE_EXTERNAL_TINYXML2 "Use a system-installed version of tinyxml2" ON)
-elseif(WIN32)
-  # For backward compatibility, this option on Windows by default is OFF
-  option(USE_EXTERNAL_TINYXML2 "Use a system-installed version of tinyxml2" OFF)
-endif()
-
-
 #============================================================================
 # Search for project-specific dependencies
 #============================================================================
@@ -59,13 +49,10 @@ set(GZ_UTILS_VER ${gz-utils3_VERSION_MAJOR})
 
 #--------------------------------------
 # Find Tinyxml2
-if(USE_EXTERNAL_TINYXML2)
-  gz_find_package(TINYXML2 PRETTY tinyxml2
-    REQUIRED_BY graphics
-    PRIVATE_FOR graphics)
-else()
-  message(STATUS "Skipping search for tinyxml2 and using an internal version\n")
-endif()
+gz_find_package(TINYXML2 PRETTY tinyxml2
+  VERSION 6.0
+  REQUIRED_BY graphics
+  PRIVATE_FOR graphics)
 
 #--------------------------------------
 # Find dependencies that we ignore for Visual Studio

graphics/src/CMakeLists.txt

@@ -1,14 +1,5 @@
 gz_get_libsources_and_unittests(sources gtest_sources)
 
-
-if(NOT USE_EXTERNAL_TINYXML2)
-  # If we are using our internal copy of tinyxml2, then add its
-  # source file.
-  message(STATUS "Adding tinyxml2 source files")
-  list(APPEND sources ${CMAKE_CURRENT_SOURCE_DIR}/tinyxml2/tinyxml2.cpp)
-endif()
-
-
 gz_add_component(graphics SOURCES ${sources} GET_TARGET_NAME graphics_target)
 
 target_link_libraries(${graphics_target}
@@ -18,14 +9,17 @@ target_link_libraries(${graphics_target}
   PRIVATE
     ${GzAssimp_LIBRARIES}
     GTS::GTS
-    FreeImage::FreeImage)
+    FreeImage::FreeImage
+    TINYXML2::TINYXML2
+)
 
 gz_build_tests(
   TYPE UNIT
   SOURCES ${gtest_sources}
   LIB_DEPS
     ${graphics_target}
     gz-common${GZ_COMMON_VER}-testing
+    TINYXML2::TINYXML2
 )
 
 # Assimp doesn't offer preprocessor version, use cmake to set a compatibility
@@ -37,49 +31,3 @@ if(${GzAssimp_VERSION} STRLESS "5.2.0")
     target_compile_definitions(UNIT_AssimpLoader_TEST PRIVATE GZ_ASSIMP_PRE_5_2_0)
   endif()
 endif()
-
-
-if(USE_EXTERNAL_TINYXML2)
-
-  # If we are using an external copy of tinyxml2, add its imported target
-  target_link_libraries(${graphics_target}
-    PRIVATE
-      TINYXML2::TINYXML2)
-
-    # The collada exporter test uses tinyxml2, so we must link it if we're using
-    # an external copy. The graphics target considers tinyxml2 to be a private
-    # dependency, so it will not automatically get linked to this test.
-    if(TARGET UNIT_ColladaExporter_TEST)
-      target_link_libraries(UNIT_ColladaExporter_TEST TINYXML2::TINYXML2)
-    endif()
-
-else()
-
-  # Otherwise, add its source directory to our target's PRIVATE include
-  # directories. We do not want this to be visible to consumers of
-  # gz-common.
-  target_include_directories(${graphics_target}
-    PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/tinyxml2)
-
-  if(TARGET UNIT_ColladaExporter_TEST)
-
-    # If we are using the internal copy of tinyxml2, then the collada exporter
-    # test needs to be pointed to the internal tinyxml2 include directory.
-    target_include_directories(UNIT_ColladaExporter_TEST PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/tinyxml2)
-    # We also need to add this as a source file to the collada exporter test's
-    # target, because we do not export the tinyxml2 symbols that get generated
-    # in the gz-common library. Therefore, the collada exporter test
-    # cannot link to those symbols and must generate its own.
-    target_sources(UNIT_ColladaExporter_TEST PRIVATE tinyxml2/tinyxml2.cpp)
-
-  endif()
-
-endif()
-
-# define of tinxml2 major version >= 6
-# https://github.com/gazebosim/gz-common/issues/28
-if (NOT TINYXML2_VERSION VERSION_LESS "6.0.0")
-  message(STATUS "TINYXML2_VERSION ${TINYXML2_VERSION} >= 6.0.0")
-  target_compile_definitions(${graphics_target}
-    PRIVATE "TINYXML2_MAJOR_VERSION_GE_6")
-endif()

graphics/src/ColladaExporter.cc

@@ -25,12 +25,6 @@
 
 #include "tinyxml2.h"
 
-#ifndef TINYXML2_MAJOR_VERSION_GE_6
-#if TINYXML2_MAJOR_VERSION >= 6
-  #define TINYXML2_MAJOR_VERSION_GE_6
-#endif
-#endif
-
 #ifdef _WIN32
   static const char pathSeparator = '\\';
   #define snprintf _snprintf
@@ -50,24 +44,10 @@ static void LogTinyXml2DocumentError(
   {
     warning += std::to_string(_doc.ErrorID()) + "): ";
 
-#ifdef TINYXML2_MAJOR_VERSION_GE_6
     const char * error1 = _doc.ErrorStr();
-#else
-    const char * error1 = _doc.GetErrorStr1();
-#endif
 
     if (error1)
       warning += "str1=" + std::string(error1);
-
-#ifndef TINYXML2_MAJOR_VERSION_GE_6
-    const char * error2 = _doc.GetErrorStr2();
-
-    if (error1 && error2)
-      warning += ", ";
-
-    if (error2)
-      warning += "str2=" + std::string(error2);
-#endif
   }
   else
   {

graphics/src/SVGLoader.cc

@@ -23,12 +23,6 @@
 
 #include "tinyxml2.h"
 
-#ifndef TINYXML2_MAJOR_VERSION_GE_6
-#if TINYXML2_MAJOR_VERSION >= 6
-  #define TINYXML2_MAJOR_VERSION_GE_6
-#endif
-#endif
-
 #include "gz/common/Console.hh"
 #include "gz/common/Util.hh"
 
@@ -885,20 +879,12 @@ bool SVGLoader::Parse(const std::string &_filename,
   tinyxml2::XMLDocument doc;
   if (doc.LoadFile(_filename.c_str()) != tinyxml2::XML_SUCCESS)
   {
-#ifdef TINYXML2_MAJOR_VERSION_GE_6
     const char *str1 = doc.ErrorStr();
-    const char *str2 = nullptr;
-#else
-    const char *str1 = doc.GetErrorStr1();
-    const char *str2 = doc.GetErrorStr2();
-#endif
-    std::string err1 = str1 ? str1 : "n/a";
-    std::string err2 = str2 ? str2 : "n/a";
+    std::string err1 = str1 != nullptr ? str1 : "n/a";
 
     gzerr << "Failed to load file " <<  _filename << std::endl
            << "XML error type " << doc.ErrorName() << "\n"
-           << "XML error info 1 " << err1 << "\n"
-           << "XML error info 2 " << err2 << "\n";
+           << "XML error info 1 " << err1 << "\n";
     return false;
   }