Prefer to use pkg-config to detect tiff library.

This solves FTBFS with tiff library >= 4.7.0.
This resolves issue TDE/tde-packaging#385.

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>

CMakeLists.txt

@@ -854,7 +854,10 @@ set( HAVE_LIBPNG 1 )
 ##### check for tiff ############################
 
 if( WITH_TIFF )
-  find_package( TIFF )
+  pkg_search_module( TIFF libtiff-4 )
+  if( NOT TIFF_FOUND )
+    find_package( TIFF )
+  endif( NOT TIFF_FOUND )
   if( NOT TIFF_FOUND )
     message(FATAL_ERROR "\ntiff are requested, but not found on your system" )
   endif( NOT TIFF_FOUND )

kimgio/CMakeLists.txt

@@ -20,6 +20,7 @@ include_directories(
 
 link_directories(
   ${TDECORE_LIBRARY_DIRS}
+  ${TIFF_LIBRARY_DIRS}
 )