Prefer to use pkg-config to detect tiff library.

This solves FTBFS with tiff library >= 4.7.0.

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
(cherry picked from commit 57eef5d4f2)

ConfigureChecks.cmake

@@ -241,7 +241,10 @@ endif( )
 ##### checks for tiff codec #####
 
 if( BUILD_TIFF )
-  find_package( TIFF )
+  pkg_search_module( TIFF libtiff-4 )
+  if( NOT TIFF_FOUND )
+    find_package( TIFF )
+  endif( )
   if( NOT TIFF_FOUND )
     tde_message_fatal( "libtiff was requested but not found on your system" )
   endif( )

kernel/kls_tiff/CMakeLists.txt

@@ -4,6 +4,9 @@ include_directories(
   ${CMAKE_BINARY_DIR}
 )
 
+link_directories(
+  ${TIFF_LIBRARY_DIRS}
+)
 
 add_definitions(
   -DTIFF_UI="${SHARE_INSTALL_PREFIX}/ksquirrel-libs/libkls_tiff.so.ui"
@@ -14,7 +17,7 @@ add_definitions(
 
 tde_add_library( kls_tiff SHARED AUTOMOC
   SOURCES fmt_codec_tiff.cpp
-  LINK ksquirrel-libs-shared ${TIFF_LIBRARY}
+  LINK ksquirrel-libs-shared ${TIFF_LIBRARIES}
   VERSION 0.8.0
   DESTINATION ${LIB_INSTALL_DIR}/ksquirrel-libs
 )