libraries/ogre: Fix build if assimp present.

Signed-off-by: B. Watson <yalhcru@gmail.com>

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

libraries/ogre/README

@@ -35,5 +35,3 @@ zziplib, FreeImage, tbb, cppunit, ois, nvidia-cg-toolkit
 
 Optional dependencies NOT (yet) available at SlackBuilds.org:
 opengles, POCO
-
-NOTE: This will not build if assimp is installed.

libraries/ogre/ogre.SlackBuild

@@ -24,6 +24,11 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+# 20210215 bkw: modified by SlackBuilds.org: force-disable the assimp
+# plugin. Our assimp is too old (or too new?) for this version of
+# ogre. This allows ogre to be built on a system where assimp is
+# installed.
+
 PRGNAM=ogre
 VERSION=${VERSION:-1.12.9}
 IMGUIVER=${IMGUIVER:-1.77}
@@ -91,6 +96,7 @@ tar xvf $CWD/imgui-$IMGUIVER.tar.gz
         -DOGRE_BUILD_DEPENDENCIES=FALSE \
         -DOGRE_BUILD_PLUGIN_FREEIMAGE=TRUE \
         -DOGRE_INSTALL_SAMPLES_SOURCE=$OGRE_INSTALL_SAMPLES_SOURCE \
+        -DOGRE_BUILD_PLUGIN_ASSIMP=FALSE \
         ../
   make
   make install DESTDIR=$PKG