1 files changed, 34 insertions, 0 deletions
diff --git a/gr-howto-write-a-block/Makefile.common b/gr-howto-write-a-block/Makefile.common
index 15a521698..0787b4eec 100644
--- a/gr-howto-write-a-block/Makefile.common
+++ b/gr-howto-write-a-block/Makefile.common
@@ -23,6 +23,10 @@
 # The name of this "out-of-tree" module
 modname = howto
 
+# Make rebuilds less verbose with stuff we can safely ignore
+# about GNU make only extensions.
+AUTOMAKE += -Wno-portability -Wnone
+
 # these flags are used when compiling non-SWIG-wrapper files
 # when going in to non-SWIG libraries
 AM_CXXFLAGS = @autoconf_default_CXXFLAGS@
@@ -69,6 +73,36 @@ RM=$(RM_PROG) -f
 STAMPS =
 MOSTLYCLEANFILES = $(BUILT_SOURCES) $(STAMPS) *.pyc *.pyo *~ *.tmp *.loT
 
+## SWIG suffixes for automake to know about
+SUFFIXES = .i .scm .py
+
+if GUILE
+# Compile a .i to what guile needs. We use -o to set the output file name,
+# or even with -outdir guile in SWIG_GUILE_ARGS, swig keeps putting a 
+# gnuradio_core_*_wrap.cxx in the source directory.
+gnuradio/%.scm : %.i
+	@echo "Compile .i to .scm"
+	@test -d "guile" || $(mkinstalldirs) "guile"
+	@test -d "gnuradio" || $(mkinstalldirs) "gnuradio"
+	$(SWIG) $(STD_SWIG_GUILE_ARGS) $($*_swig_args) \
+		-MD -MF guile/$*.Std \
+		-module $* -o guile/$*.cc $<
+	$(SED) -e 's|guile/\(.*\)\.cc:|gnuradio/\1.scm:|' guile/$*.Std > guile/$*.d
+	$(SED) -i -e 's/<--dummy-[0-9]\+-->/<top>/g' gnuradio/$*.scm
+	$(SED) -i -e 's/^(export /(export-safely /' gnuradio/$*.scm
+	$(RM) guile/$*.Std
+endif
+
+# Compile a .i file to what python needs
+.i.py:
+	@echo "Compile .i to .py"
+	@test -d "python" || $(mkinstalldirs) "python"
+	$(SWIG) $(STD_SWIG_PYTHON_ARGS) $($*_swig_args) \
+		-MD -MF python/$*.Std \
+		-module $* -o python/$*.cc -oh python/$*.h $<
+	$(SED) -e 's|python/\(.*\)\.cc:|\1.py:|' python/$*.Std > python/$*.d
+	$(RM) python/$*.Std
+
 # Don't distribute the files defined in the variable 'no_dist_files'
 dist-hook:
 	@for file in $(no_dist_files); do \