Files
u-boot/scripts/dtc/Makefile
João Marcos Costa 8ef8dee4f3 scripts/dtc: drop yaml in DT validation
The build issues found in dtc/yamltree were partially mitigated by a
previous commit (807bcd844a: "scripts/dtc: Fix pkg-config behavior under
sysroot"), but upstream dtc simply disabled yaml, and the same should be
done here in order to permanently avoid those issues.

Backport the change below from Linux v5.18 [1]:

ef8795f3f1c ("dt-bindings: kbuild: Use DTB files for validation")

I tested this patch with a couple Yocto builds: u-boot and u-boot-tools,
using the current master branch (rev. "c53b0708f9"), having removed
libyaml-native from u-boot-tools's dependencies.

[1] https://git.kernel.org/linus/ef8795f3f1ce

Signed-off-by: João Marcos Costa <joaomarcos.costa@bootlin.com>
Acked-by: Quentin Schulz <quentin.schulz@cherry.de>
2026-04-30 12:21:47 -06:00

33 lines
1.1 KiB
Makefile

# SPDX-License-Identifier: GPL-2.0
# scripts/dtc makefile
# *** Also keep .gitignore in sync when changing ***
hostprogs-always-y += dtc fdtoverlay
dtc-objs := dtc.o flattree.o fstree.o data.o livetree.o treesource.o \
srcpos.o checks.o util.o
dtc-objs += dtc-lexer.lex.o dtc-parser.tab.o
# The upstream project builds libfdt as a separate library. We are choosing to
# instead directly link the libfdt object files into fdtoverlay.
libfdt-objs := fdt.o fdt_ro.o fdt_wip.o fdt_sw.o fdt_rw.o fdt_strerror.o fdt_empty_tree.o fdt_addresses.o fdt_overlay.o
libfdt = $(addprefix libfdt/,$(libfdt-objs))
fdtoverlay-objs := $(libfdt) fdtoverlay.o util.o
# Source files need to get at the userspace version of libfdt_env.h to compile
HOST_EXTRACFLAGS := -I$(srctree)/$(src)/libfdt
HOST_EXTRACFLAGS += -DNO_YAML
# Generated files need one more search path to include headers in source tree
HOSTCFLAGS_dtc-lexer.lex.o := -I$(src)
HOSTCFLAGS_dtc-parser.tab.o := -I$(src)
# dependencies on generated files need to be listed explicitly
$(obj)/dtc-lexer.lex.o: $(obj)/dtc-parser.tab.h
# Added for U-Boot
ifeq ($(PYTHON_ENABLE),y)
subdir-$(CONFIG_PYLIBFDT) += pylibfdt
endif