doc/Makefile.am: don¹t set docdir, automake handles it already

And elder make(1) programs don¹t like "x ?= y" ...

diff --git a/doc/Makefile.am b/doc/Makefile.am
index 34dd9c9b7dd6f0d3c5a4e187f65746a10455f2c5..3a37ff4768153ed5badcbfa76435417406ebd678 100644 (file)
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -19,8 +19,6 @@ EXTRA_DIST = FAQ.txt GIT.txt Protocol.txt Platforms.txt README-AUX.txt \
 maintainer-clean-local:
        rm -f Makefile Makefile.in
 
-docdir ?= $(datadir)/doc/$(PACKAGE)
-
 documents = $(EXTRA_DIST) ../AUTHORS ../COPYING ../ChangeLog ../INSTALL \
        ../NEWS ../README