Postgres include dir not recognoized when specified via command line

defineTest(qtConfLibrary_inline) {
    lib = $$eval($${1}.library)
    !defined($${1}.libs, var): \
        error("'inline' source in library '$$lib' does not specify 'libs'.")

    # if multiple libraries provide the same export, it makes sense
    # to make them recognize the same input variables.
    input = $$eval($${2}.alias)  <<-- here the second parameter is needed
...
    incdir = $$val_escape(config.input.$${input}.incdir) <<--- and here the passed incdir is read

defineTest(qtConfLibrary_psqlEnv) {
    # Respect PSQL_LIBS if set
    PSQL_LIBS = $$getenv(PSQL_LIBS)
    !isEmpty(PSQL_LIBS) {
        $${1}.libs = $$PSQL_LIBS
        export($${1}.libs)
    } else {
        !qtConfLibrary_inline($$1): \<<-- only one parameter passed to the function
            return(false)
    }
    return(true)
}