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In old days, the "host-progs" syntax was used for specifying host
programs. It was renamed to the current "hostprogs-y" in 2004.
It is typically useful in scripts/Makefile because it allows Kbuild to
selectively compile host programs based on the kernel configuration.
This commit renames like follows:
always -> always-y
hostprogs-y -> hostprogs
So, scripts/Makefile will look like this:
always-$(CONFIG_BUILD_BIN2C) += ...
always-$(CONFIG_KALLSYMS) += ...
...
hostprogs := $(always-y) $(always-m)
I think this makes more sense because a host program is always a host
program, irrespective of the kernel configuration. We want to specify
which ones to compile by CONFIG options, so always-y will be handier.
The "always", "hostprogs-y", "hostprogs-m" will be kept for backward
compatibility for a while.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
32 lines
950 B
Makefile
32 lines
950 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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hostprogs := genksyms
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always-y := $(hostprogs)
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genksyms-objs := genksyms.o parse.tab.o lex.lex.o
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# FIXME: fix the ambiguous grammar in parse.y and delete this hack
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#
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# Suppress shift/reduce, reduce/reduce conflicts warnings
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# unless W=1 is specified.
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#
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# Just in case, run "$(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_EXTRA_WARN)),)
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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)/pars%.tab.c $(obj)/pars%.tab.h: $(src)/pars%.y FORCE
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$(call if_changed,bison_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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