push preprocessed stuff into build directory

doc/Makefile

@@ -13,16 +13,16 @@ M4 := m4
 SPHINX_ACTIONS := html dirhtml singlehtml pickle json htmlhelp qthelp devhelp epub latex latexpdf latexpdfja text man texinfo info gettext changes xml pseudoxml linkcheck doctest coverage clean
 
 MACROS := $(SOURCEDIR)/macros.m4
-SRCS := $(wildcard $(SOURCEDIR)/*.rst.pp)
-OBJS := $(patsubst %.pp,%,$(SRCS))
+SRCS := $(wildcard $(SOURCEDIR)/*.rst)
+OBJS := $(patsubst $(SOURCEDIR)/%,$(BUILDDIR)/%,$(SRCS))
 
 # Put it first so that "make" without argument is like "make help".
 help:
 	@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
 
 preprocess: $(OBJS)
 
-%.rst: %.rst.pp $(MACROS)
+$(BUILDDIR)/%.rst: $(SOURCEDIR)/%.rst $(MACROS)
 	@$(M4) -I $(SOURCEDIR) $< > $@
 
 $(SPHINX_ACTIONS): Makefile preprocess

doc/source/conf.py

@@ -17,6 +17,7 @@
 
 sys.path.insert(0, os.path.abspath('../..'))
 sys.path.append(os.path.abspath("."))
+sys.path.append(os.path.abspath("../build"))
 sys.path.append(os.path.abspath('../../src/python'))
 
 # -- Project information -----------------------------------------------------