ecb24245bb
Using Makefile's wildcard with absolute path to detect the presence of libyaml results in false-positive detection when cross-compiling e.g. in yocto environment. The latter results in build error: | scripts/dtc/yamltree.o: In function `yaml_propval_int': | yamltree.c: undefined reference to `yaml_sequence_start_event_initialize' | yamltree.c: undefined reference to `yaml_emitter_emit' | yamltree.c: undefined reference to `yaml_scalar_event_initialize' ... Use pkg-config to locate libyaml to address this scenario. Signed-off-by: Pavel Modilaynen <pavel.modilaynen@axis.com> [robh: silence stderr] Signed-off-by: Rob Herring <robh@kernel.org>
30 lines
940 B
Makefile
30 lines
940 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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# scripts/dtc makefile
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hostprogs-y := dtc
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always := $(hostprogs-y)
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dtc-objs := dtc.o flattree.o fstree.o data.o livetree.o treesource.o \
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srcpos.o checks.o util.o
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dtc-objs += dtc-lexer.lex.o dtc-parser.tab.o
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# Source files need to get at the userspace version of libfdt_env.h to compile
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HOST_EXTRACFLAGS := -I$(src)/libfdt
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ifeq ($(shell pkg-config --exists yaml-0.1 2>/dev/null && echo yes),)
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HOST_EXTRACFLAGS += -DNO_YAML
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else
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dtc-objs += yamltree.o
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HOSTLDLIBS_dtc := $(shell pkg-config yaml-0.1 --libs)
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endif
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# Generated files need one more search path to include headers in source tree
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HOSTCFLAGS_dtc-lexer.lex.o := -I$(src)
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HOSTCFLAGS_dtc-parser.tab.o := -I$(src)
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# dependencies on generated files need to be listed explicitly
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$(obj)/dtc-lexer.lex.o: $(obj)/dtc-parser.tab.h
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# generated files need to be cleaned explicitly
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clean-files := dtc-lexer.lex.c dtc-parser.tab.c dtc-parser.tab.h
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