Don't use "?=" which seems to be a GNUism.

diff --git a/Doc/Makefile b/Doc/Makefile
index 955fb68b141f7410e1f12b7bbf149334c98dc856..1811a343ed5f08f0f4bfbb050043543d489259d5 100644 (file)
--- a/Doc/Makefile
+++ b/Doc/Makefile
@@ -4,9 +4,9 @@
 #
 
 # You can set these variables from the command line.
-PYTHON       ?= python
-SVNROOT      ?= http://svn.python.org/projects
-SPHINXOPTS   ?=
+PYTHON       = python
+SVNROOT      = http://svn.python.org/projects
+SPHINXOPTS   =
 
 ALLSPHINXOPTS = -b$(BUILDER) -dbuild/doctrees $(SPHINXOPTS) . build/$(BUILDER)