Merge 90ebd1e into 9341eb2

CMakeLists.txt

@@ -20,7 +20,7 @@ ign_configure_project(VERSION_SUFFIX)
 # Set project-specific options
 #============================================================================
 
-# ignition-rendering currently has no options that are unique to it
+option(USE_UNOFFICAL_OGRE_VERSIONS "Accept unsupported Ogre versions in the build" OFF)
 
 #============================================================================
 # Search for project-specific dependencies
@@ -61,10 +61,26 @@ endif()
 # Find OGRE
 list(APPEND ign_ogre_components "RTShaderSystem" "Terrain" "Overlay")
 
-ign_find_package(IgnOGRE VERSION 1.8.0
-  COMPONENTS ${ign_ogre_components}
-  REQUIRED_BY ogre
-  PRIVATE_FOR ogre)
+# Ogre versions greater than 1.9 are not officialy supported.
+# Display a warning for the users on this setup unless they provide
+# USE_UNOFFICAL_OGRE_VERSIONS flag
+if (NOT USE_UNOFFICAL_OGRE_VERSIONS)
+  ign_find_package(IgnOGRE VERSION 1.10
+    COMPONENTS ${ign_ogre_components})
+
+  if (OGRE_FOUND)
+    IGN_BUILD_WARNING("Ogre 1.x versions greater than 1.9 are not officially supported."
+                      "The software might compile and even work but support from upstream"
+                      "could be reduced to accepting patches for newer versions")
+  else()
+    # If ogre 1.10 or greater was not found, then proceed to look for 1.9.x
+    # versions which are offically supported
+    ign_find_package(IgnOGRE VERSION 1.9.0
+      COMPONENTS ${ign_ogre_components}
+      REQUIRED_BY ogre
+      PRIVATE_FOR ogre)
+  endif()
+endif()
 
 if (OGRE_FOUND)
   # find boost - mainly needed on macOS and also by the terrain component

Changelog.md

@@ -1,6 +1,10 @@
 ## Ignition Rendering
 
-### Ignition Rendering 3.X.X (2021-XX-XX)
+### Ignition Rendering 3.x.x (2021-XX-XX)
+
+1. CMake warning on Ogre versions that are not officially supported.
+   To disable the new warning, it is enough to enable the cmake option USE_UNOFFICAL_OGRE_VERSIONS
+    * [Pull request 376](https://github.com/ignitionrobotics/ign-rendering/pull/376)
 
 ### Ignition Rendering 3.5.0 (2021-05-25)