LDADD doesn't work as expected

[Arthur Schwarz]

I'm trying to use LDADD to reference libgslip.a in another directory. After
building libgslip.a with make, I issue a make check and get the message:

 *** No rule to make target '../libgslip/libgslip.a/', needed by
'SlipTest.exe'.  Stop.

The test directory is entered and the Makefile in the test directory is
executed, so the path would seem to be correct but I am missing something. I
have read Section 8.1.2 Linking the program and I think I'm following the
example given, but alas, it just doesn't work.

I have tried to use LDADD and prog_LDADD with the same effect. 
 
Maintenance turns design into chaos