39 lines
1.1 KiB
Makefile
39 lines
1.1 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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hostprogs-y := genksyms
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always := $(hostprogs-y)
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genksyms-objs := genksyms.o parse.tab.o lex.lex.o
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# FIXME: fix the ambiguous grammar in parse.y and delete this hack
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#
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# Suppress shift/reduce, reduce/reduce conflicts warnings
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# unless W=1 is specified.
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#
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# Just in case, run "$(YACC) --version" without suppressing stderr
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# so that 'bison: not found' will be displayed if it is missing.
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ifeq ($(findstring 1,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
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quiet_cmd_bison_no_warn = $(quiet_cmd_bison)
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cmd_bison_no_warn = $(YACC) --version >/dev/null; \
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$(cmd_bison) 2>/dev/null
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$(obj)/parse.tab.c: $(src)/parse.y FORCE
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$(call if_changed,bison_no_warn)
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quiet_cmd_bison_h_no_warn = $(quiet_cmd_bison_h)
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cmd_bison_h_no_warn = $(YACC) --version >/dev/null; \
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$(cmd_bison_h) 2>/dev/null
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$(obj)/parse.tab.h: $(src)/parse.y FORCE
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$(call if_changed,bison_h_no_warn)
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endif
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# -I needed for generated C source (shipped source)
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HOSTCFLAGS_parse.tab.o := -I $(srctree)/$(src)
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HOSTCFLAGS_lex.lex.o := -I $(srctree)/$(src)
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# dependencies on generated files need to be listed explicitly
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$(obj)/lex.lex.o: $(obj)/parse.tab.h
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