Filter raw linker flags from GBL_LIBRARIES (#15162)

Author: f3sch

dependencies/O2Dependencies.cmake

@@ -286,12 +286,25 @@ find_package(GBL)
 set_package_properties(GBL PROPERTIES TYPE REQUIRED)
 if(GBL_FOUND AND NOT TARGET GBL::GBL)
     # As of now, GBL does not provide a cmake target so create a compatibility wrapper
+    # also GBL_LIBRARIES contains raw linker flags to ROOT we need to filter out
+    set(GBL_LIBRARIES_FILTERED "")
+    set(GBL_LINK_OPTIONS "")
+    foreach(_lib IN LISTS GBL_LIBRARIES)
+        if(_lib MATCHES "^-[lL]")
+            continue()
+        elseif(_lib MATCHES "^-")
+            list(APPEND GBL_LINK_OPTIONS "${_lib}")
+        else()
+            list(APPEND GBL_LIBRARIES_FILTERED "${_lib}")
+        endif()
+    endforeach()
     add_library(GBL::GBL INTERFACE IMPORTED)
     target_include_directories(GBL::GBL INTERFACE ${GBL_INCLUDE_DIR})
     target_link_libraries(GBL::GBL INTERFACE
-        ${GBL_LIBRARIES}
+        ${GBL_LIBRARIES_FILTERED}
         Eigen3::Eigen
     )
+    target_link_options(GBL::GBL INTERFACE ${GBL_LINK_OPTIONS})
 endif()
 
 feature_summary(WHAT ALL FATAL_ON_MISSING_REQUIRED_PACKAGES)