From 2386b935473755b1f4adae1b868b995055a3edfa Mon Sep 17 00:00:00 2001
From: Glenn Waldron <gwaldron@gmail.com>
Date: Mon, 6 May 2024 13:15:36 -0400
Subject: [PATCH] cmake wip

---
 cmake/FindTinyXML.cmake     | 76 +++++++++++++++++++++++++++++++++++++
 src/osgEarth/CMakeLists.txt | 10 +++--
 2 files changed, 82 insertions(+), 4 deletions(-)
 create mode 100644 cmake/FindTinyXML.cmake

diff --git a/cmake/FindTinyXML.cmake b/cmake/FindTinyXML.cmake
new file mode 100644
index 0000000000..dd949b847e
--- /dev/null
+++ b/cmake/FindTinyXML.cmake
@@ -0,0 +1,76 @@
+##################################################################################################
+#
+# Source: https://github.com/ros/cmake_modules
+# 
+# CMake script for finding TinyXML.
+# 
+# Input variables:
+# 
+# - TinyXML_ROOT_DIR (optional): When specified, header files and libraries will be searched for in
+#     ${TinyXML_ROOT_DIR}/include
+#     ${TinyXML_ROOT_DIR}/libs
+#   respectively, and the default CMake search order will be ignored. When unspecified, the default
+#   CMake search order is used.
+#   This variable can be specified either as a CMake or environment variable. If both are set,
+#   preference is given to the CMake variable.
+#   Use this variable for finding packages installed in a nonstandard location, or for enforcing
+#   that one of multiple package installations is picked up.
+# 
+# 
+# Cache variables (not intended to be used in CMakeLists.txt files)
+# 
+# - TinyXML_INCLUDE_DIR: Absolute path to package headers.
+# - TinyXML_LIBRARY: Absolute path to library.
+# 
+# 
+# Output variables:
+# 
+# - TinyXML_FOUND: Boolean that indicates if the package was found
+# - TinyXML_INCLUDE_DIRS: Paths to the necessary header files
+# - TinyXML_LIBRARIES: Package libraries
+# 
+# 
+# Example usage:
+# 
+#  find_package(TinyXML)
+#  if(NOT TinyXML_FOUND)
+#    # Error handling
+#  endif()
+#  ...
+#  include_directories(${TinyXML_INCLUDE_DIRS} ...)
+#  ...
+#  target_link_libraries(my_target ${TinyXML_LIBRARIES})
+# 
+##################################################################################################
+
+# Get package location hint from environment variable (if any)
+if(NOT TinyXML_ROOT_DIR AND DEFINED ENV{TinyXML_ROOT_DIR})
+  set(TinyXML_ROOT_DIR "$ENV{TinyXML_ROOT_DIR}" CACHE PATH
+      "TinyXML base directory location (optional, used for nonstandard installation paths)")
+endif()
+
+# Search path for nonstandard package locations
+if(TinyXML_ROOT_DIR)
+  set(TinyXML_INCLUDE_PATH PATHS "${TinyXML_ROOT_DIR}/include" NO_DEFAULT_PATH)
+  set(TinyXML_LIBRARY_PATH PATHS "${TinyXML_ROOT_DIR}/lib"     NO_DEFAULT_PATH)
+endif()
+
+# Find headers and libraries
+find_path(TinyXML_INCLUDE_DIR NAMES tinyxml.h PATH_SUFFIXES "tinyxml" ${TinyXML_INCLUDE_PATH})
+find_library(TinyXML_LIBRARY  NAMES tinyxml   PATH_SUFFIXES "tinyxml" ${TinyXML_LIBRARY_PATH})
+
+mark_as_advanced(TinyXML_INCLUDE_DIR
+                 TinyXML_LIBRARY)
+
+# Output variables generation
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(TinyXML DEFAULT_MSG TinyXML_LIBRARY
+                                                      TinyXML_INCLUDE_DIR)
+
+set(TinyXML_FOUND ${TINYXML_FOUND}) # Enforce case-correctness: Set appropriately cased variable...
+unset(TINYXML_FOUND) # ...and unset uppercase variable generated by find_package_handle_standard_args
+
+if(TinyXML_FOUND)
+  set(TinyXML_INCLUDE_DIRS ${TinyXML_INCLUDE_DIR})
+  set(TinyXML_LIBRARIES ${TinyXML_LIBRARY})
+endif()
\ No newline at end of file
diff --git a/src/osgEarth/CMakeLists.txt b/src/osgEarth/CMakeLists.txt
index 2561c4333b..bb6814a0fd 100644
--- a/src/osgEarth/CMakeLists.txt
+++ b/src/osgEarth/CMakeLists.txt
@@ -12,7 +12,7 @@ endif()
 find_package(CURL REQUIRED)
 find_package(GDAL REQUIRED)
 find_package(SQLite3 REQUIRED)
-find_package(tinyxml REQUIRED)
+find_package(TinyXML REQUIRED)
 
 # optional
 find_package(geos)
@@ -945,9 +945,11 @@ if (spdlog_FOUND)
 endif()
 
 # TinyXML support?
-include_directories(${tinyxml_INCLUDE_DIR})
-target_link_libraries(${LIB_NAME} PRIVATE unofficial-tinyxml::unofficial-tinyxml)
-message(STATUS "Linking osgEarth with tinyxml")
+if (TinyXML_FOUND)
+    include_directories(${TinyXML_INCLUDE_DIRS})
+    target_link_libraries(${LIB_NAME} PRIVATE ${TinyXML_LIBRARIES})
+    message(STATUS "Linking osgEarth with tinyxml")
+endif()
 
 # MBTiles support?
 if(SQLITE3_FOUND)