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kbuild: add LEX and YACC variables 

Allow users to use their favorite lexer / parser generators.
This is useful for me to test various flex and bison versions.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada 2017-12-10 01:02:28 +09:00
parent e3b03bf29d
commit 73a4f6dbe7
2 changed files with 5 additions and 3 deletions
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4
Makefile
View File

@ -377,6 +377,8 @@ NM = $(CROSS_COMPILE)nm
STRIP = $(CROSS_COMPILE)strip
OBJCOPY = $(CROSS_COMPILE)objcopy
OBJDUMP = $(CROSS_COMPILE)objdump
LEX = flex
YACC = bison
AWK = awk
GENKSYMS = scripts/genksyms/genksyms
INSTALLKERNEL := installkernel
@ -428,7 +430,7 @@ GCC_PLUGINS_CFLAGS :=
export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
export CPP AR NM STRIP OBJCOPY OBJDUMP HOSTLDFLAGS HOST_LOADLIBES
export MAKE AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE
export MAKE LEX YACC AWK GENKSYMS INSTALLKERNEL PERL PYTHON UTS_MACHINE
export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS

4
scripts/Makefile.lib
View File

@ -193,7 +193,7 @@ ifdef REGENERATE_PARSERS
LEX_PREFIX = $(if $(LEX_PREFIX_${baseprereq}),$(LEX_PREFIX_${baseprereq}),yy)
quiet_cmd_flex = LEX $@
cmd_flex = flex -o$@ -L -P $(LEX_PREFIX) $<
cmd_flex = $(LEX) -o$@ -L -P $(LEX_PREFIX) $<
.PRECIOUS: $(src)/%.lex.c_shipped
$(src)/%.lex.c_shipped: $(src)/%.l
@ -204,7 +204,7 @@ $(src)/%.lex.c_shipped: $(src)/%.l
YACC_PREFIX = $(if $(YACC_PREFIX_${baseprereq}),$(YACC_PREFIX_${baseprereq}),yy)
quiet_cmd_bison = YACC $@
cmd_bison = bison -o$@ -t -l -p $(YACC_PREFIX) $<
cmd_bison = $(YACC) -o$@ -t -l -p $(YACC_PREFIX) $<
.PRECIOUS: $(src)/%.tab.c_shipped
$(src)/%.tab.c_shipped: $(src)/%.y