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Diffstat (limited to 'kBuild/units/lex.kmk')
| -rw-r--r-- | kBuild/units/lex.kmk | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/kBuild/units/lex.kmk b/kBuild/units/lex.kmk new file mode 100644 index 0000000..d8ec238 --- /dev/null +++ b/kBuild/units/lex.kmk @@ -0,0 +1,153 @@ +# $Id: lex.kmk 3284 2019-01-05 01:40:31Z bird $ +## @file +# lex unit. +# + +# +# Copyright (c) 2008-2017 knut st. osmundsen <bird-kBuild-spam-xviiv@anduin.net> +# +# This file is part of kBuild. +# +# kBuild is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# kBuild is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with kBuild; if not, write to the Free Software +# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA +# +# +# As a special exception you are granted permission to include this file, via +# the kmk include directive, as you wish without this in itself causing the +# resulting makefile, program or whatever to be covered by the GPL license. +# This exception does not however invalidate any other reasons why the makefile, +# program, whatever should not be covered the GPL. +# +# + +ifdef UNIT_lex + $(error kBuild: The lex unit was included twice!) +endif +UNIT_lex = lex + +# Add our target properties. +PROPS_TOOLS += LEXTOOL +PROPS_SINGLE += LEXTOOL +PROPS_ACCUMULATE_R += LEXFLAGS + +# Add ourselves to the default source handlers. +KBUILD_SRC_HANDLERS += \ + .l:def_src_handler_lex + + +## wrapper the compile command dependency check. +ifndef NO_COMPILE_CMDS_DEPS + _DEP_LEX_CMDS = $$(comp-cmds-ex $$($(target)_$(subst :,_,$(source))_LEX_CMDS_PREV_),$$(commands $(out)),FORCE) +else + _DEP_LEX_CMDS = +endif + + +## +# Generates the rules for running flex on a specific source file. +# +# @param $(obj) The object file. +# @param lots more +define def_lex_rule +$(out) + $(output_extra) +| $(output_maybe) : \ + $(deps) \ + $(value _DEP_LEX_CMDS) \ + | \ + $(orderdeps) + %$$(call MSG_COMPILE,$(target),$(source),$$@,$(type)) + $$(QUIET)$$(RM) -f -- $(dep) $(out) $(output_extra) $(output_maybe) + +$(cmds) + +ifndef NO_COMPILE_CMDS_DEPS +ifdef KBUILD_HAVE_OPTIMIZED_APPEND + %$$(QUIET2)$$(APPEND) -ni '$(dep)' \ + 'define $(target)_$(subst :,_,$(source))_LEX_CMDS_PREV_' \ + '--insert-command=$(out)' \ + 'endef' +else + %$$(QUIET2)$$(APPEND) '$(dep)' + %$$(QUIET2)$$(APPEND) '$(dep)' 'define $(target)_$(subst :,_,$(source))_LEX_CMDS_PREV_' + %$$(QUIET2)$$(APPEND) -c '$(dep)' '$(out)' + %$$(QUIET2)$$(APPEND) '$(dep)' 'endef' +endif +endif + +# update globals +_OUT_FILES += $(out) $(output_extra) $(output_maybe) +$(target)_GEN_SOURCES_ += $(out) +$(target)_2_INTERMEDIATES += $(intermediates) + +endef # def_lex_rule + +## +# Handler for .l files listed in the SOURCES properties. +# +# .l files are transformed into .c files that then gets compiled by +# the C compiler. +# +# @param target The target file. +# @param source The source file. +# @param lots more +# @returns quite a bit. +define def_src_handler_lex +# Figure out all the props. +local type := LEX +local tmp := $(kb-src-tool tool) +ifeq ($(tool),) +$(error kBuild: $(target) / $(sources) does not a (lex) tool defined!) +endif +ifndef TOOL_$(tool)_LEX_CMDS +$(error kBuild: TOOL_$(tool)_LEX_CMDS isn't defined! target=$(target) source=$(source) ) +endif +local out := $(kb-obj-base outbase).c +local tmp := $(kb-src-prop LEXFLAGS,flags,left-to-right,) +local tmp := $(kb-src-prop DEPS,deps,left-to-right,$(defpath)) +local tmp := $(kb-src-prop ORDERDEPS,orderdeps,left-to-right,$(defpath)) +ifdef TOOL_$(tool)_LEX_OUT_FILE # .c/.cpp output depends on flags. + local out := $(strip $(TOOL_$(tool)_LEX_OUT_FILE)) + ifeq ($(out),) + local out := $(outbase).c + endif +endif +local dirdep := $(call DIRDEP,$(dir $(out))) + +# Adjust paths if we got a default path. +ifneq ($(defpath),) + local source := $(abspathex $(source),$(defpath)) +endif + +# dependency file. +local dep := $(out)$(SUFF_DEP) +ifndef NO_COMPILE_CMDS_DEPS + _DEPFILES_INCLUDED += $(dep) + $(eval includedep $(dep)) +endif + +# call the tool +local cmds := $(TOOL_$(tool)_LEX_CMDS) +local output_extra := $(TOOL_$(tool)_LEX_OUTPUT) +local output_maybe := $(TOOL_$(tool)_LEX_OUTPUT_MAYBE) +local deps += $(TOOL_$(tool)_LEX_DEPEND) $(source) +local orderdeps += $(TOOL_$(tool)_LEX_DEPORD) $(dirdep) + +# Whether it generates a header file depends on the tool / flags. +local intermediates := $(filter %.h %.hpp %.h++ %.H,$(output_extra)) + +# generate the rule. +$(eval $(def_lex_rule)) + +endef # def_src_handler_lex + + |