prl file is read but LIBS is not updated

Hi

as far as I understand from qmake documentation, http://doc.qt.nokia.com/4.6/qmake-environment-reference.html#libdepend, prl files can keep track of additional static libraries to be linked in the application when linking to static libraries.

Thus, in my library project I added

1. save information about the library:
   CONFIG += create_prl

and the .prl file actually gets created; the information which relates to other static libraries used is the following I guess

QMAKE_PRL_LIBS = -LC:\Lore\Boost\lib -lboost_regex-mgw44-mt-1_43

which correctly says that my library (in this case libsource-highlight.a) uses the boost library.

Now, in an application that uses libsource-highlight.a I added

CONFIG += link_prl

and I put

LIBS += <other stuff> -lsource-highlight

however, the directives

-LC:\Lore\Boost\lib -lboost_regex-mgw44-mt-1_43

are not automatically added by qmake to LIBS,

Please, note that libsource-highlight.a is correctly found (I put the right library path). Moreover, by running qmake with -d the .prl file is parsed

DEBUG 1: Project file: reading C:/Lore/usr/lib/source-highlight.prl
DEBUG 1: Project Parser: c:\Lore\usr\lib\source-highlight.prl:1 :QMAKE_PRL_BUILD_DIR: :=: (C:/Lore/work/source-highlight-build-desktop/lib/srchilite)
DEBUG 1: Project Parser: c:\Lore\usr\lib\source-highlight.prl:2 :QMAKE_PRO_INPUT: :=: (srchilite.pro)
DEBUG 1: Project Parser: c:\Lore\usr\lib\source-highlight.prl:3 :QMAKE_PRL_TARGET: :=: (libsource-highlight)
DEBUG 1: Project Parser: c:\Lore\usr\lib\source-highlight.prl:4 :QMAKE_PRL_CONFIG: :=: (include_source_dir lex yacc warn_on debug uic resources incremental_off thread_off warn_on link_prl copy_dir_files debug_and_release_target precompile_header debug stl exceptions rtti static console warn_on create_prl staticlib static)
DEBUG 1: Project Parser: c:\Lore\usr\lib\source-highlight.prl:5 :QMAKE_PRL_VERSION: :=: (3)
DEBUG 1: Project Parser: c:\Lore\usr\lib\source-highlight.prl:6 :QMAKE_PRL_LIBS: :=: (-LC:\Lore\Boost\lib -lboost_regex-mgw44-mt-1_43)

many thanks in advance
Lorenzo