Support discovery of TinyXML2 by pkgconfig

Author: Federico Giovanardi

cmake/modules/FindTinyXML2.cmake

@@ -15,6 +15,13 @@ endif()
 
 if(NOT (TINYXML2_FROM_SOURCE OR TINYXML2_FROM_THIRDPARTY))
     find_package(TinyXML2 CONFIG QUIET)
+    if(NOT TinyXML2_FOUND)
+        find_package(PkgConfig REQUIRED)
+        pkg_check_modules(TinyXML2 REQUIRED IMPORTED_TARGET tinyxml2)
+        if(TARGET PkgConfig::TinyXML2)
+            add_library(tinyxml2::tinyxml2 ALIAS PkgConfig::TinyXML2)
+        endif()
+    endif()
 endif()
 
 if(TinyXML2_FOUND AND NOT TINYXML2_FROM_THIRDPARTY)

cmake/packaging/Config.cmake.in

@@ -25,6 +25,13 @@ set_and_check(@PROJECT_NAME@_LIB_DIR "@PACKAGE_LIB_INSTALL_DIR@")
 find_package(fastcdr REQUIRED)
 find_package(foonathan_memory REQUIRED)
 find_package(TinyXML2 QUIET)
+if(NOT TinyXML2_FOUND)
+    find_package(PkgConfig REQUIRED)
+    pkg_check_modules(TinyXML2 IMPORTED_TARGET tinyxml2)
+    if(TARGET PkgConfig::TinyXML2)
+        add_library(tinyxml2::tinyxml2 ALIAS PkgConfig::TinyXML2)
+    endif()
+endif()
 @FASTDDS_INSTALLER_DEPS_ANCILLARY@
 @FASTDDS_PACKAGE_UNIX_OPT_DEPS@