fdt: Makefile: Build python libfdt library if needed
This is needed by binman and dtoc, so if those are being used, check that
the library is present and complain if not. Make sure that any error
appears on stderr so that buildman notices it.
This means that the fallback library (which uses fdtget) will not be used
anymore and swig will need to be installed to use binman / dtoc.
This affects any board which uses binman (currently sunxi and x86) or dtoc
(anything that uses CONFIG_SPL_OF_PLATDATA, currently some rockchip
boards).
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/Makefile b/Makefile
index 1b7cab2..c13937c 100644
--- a/Makefile
+++ b/Makefile
@@ -1116,7 +1116,7 @@
u-boot.rom: u-boot-x86-16bit.bin u-boot.bin \
$(if $(CONFIG_SPL_X86_16BIT_INIT),spl/u-boot-spl.bin) \
- $(if $(CONFIG_HAVE_REFCODE),refcode.bin) FORCE
+ $(if $(CONFIG_HAVE_REFCODE),refcode.bin) checkbinman FORCE
$(call if_changed,binman)
OBJCOPYFLAGS_u-boot-x86-16bit.bin := -O binary -j .start16 -j .resetvec
@@ -1125,7 +1125,8 @@
endif
ifneq ($(CONFIG_ARCH_SUNXI),)
-u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.img u-boot.dtb FORCE
+u-boot-sunxi-with-spl.bin: spl/sunxi-spl.bin u-boot.img u-boot.dtb \
+ checkbinman FORCE
$(call if_changed,binman)
endif
@@ -1354,6 +1355,18 @@
$(timestamp_h): $(srctree)/Makefile FORCE
$(call filechk,timestamp.h)
+checkbinman: tools
+ @if ! ( echo 'import libfdt' | ( PYTHONPATH=tools python )); then \
+ echo >&2; \
+ echo >&2 '*** binman needs the Python libfdt library.'; \
+ echo >&2 '*** Either install it on your system, or try:'; \
+ echo >&2 '***'; \
+ echo >&2 '*** sudo apt-get install swig libpython-dev'; \
+ echo >&2 '***'; \
+ echo >&2 '*** to have U-Boot build its own version.'; \
+ false; \
+ fi
+
# ---------------------------------------------------------------------------
quiet_cmd_cpp_lds = LDS $@
cmd_cpp_lds = $(CPP) -Wp,-MD,$(depfile) $(cpp_flags) $(LDPPFLAGS) \