Only build the libfdt python module if 'swig' is available
When swig is not available, we can still build correctly. So make this
optional. Add a comment about how to enable this build.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/Makefile b/tools/Makefile
index 2731b7a..421414b 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -107,7 +107,10 @@
fit_info-objs := $(dumpimage-mkimage-objs) fit_info.o
fit_check_sign-objs := $(dumpimage-mkimage-objs) fit_check_sign.o
-hostprogs-$(CONFIG_SPL_OF_PLATDATA) += _libfdt.so
+# Build a libfdt Python module if swig is available
+# Use 'sudo apt-get install swig libpython-dev' to enable this
+hostprogs-$(CONFIG_SPL_OF_PLATDATA) += \
+ $(if $(shell which swig),_libfdt.so)
_libfdt.so-sharedobjs += $(LIBFDT_OBJS)
libfdt: