Makefile.rules

#  SPDX-License-Identifier: BSD-3-Clause
#
#  lib-cargo Makefile.rules
#
#  Authors: Vlad-Andrei BADOIU <vlad_andrei.badoiu@upb.ro>
#	    Dennis Kobert <dennis@kobert.dev>
#
#  Copyright (c) 2022, University Politehnica of Bucharest (UPB)
#
#  Redistribution and use in source and binary forms, with or without
#  modification, are permitted provided that the following conditions
#  are met:
#
#  1. Redistributions of source code must retain the above copyright
#     notice, this list of conditions and the following disclaimer.
#  2. Redistributions in binary form must reproduce the above copyright
#     notice, this list of conditions and the following disclaimer in the
#     documentation and/or other materials provided with the distribution.
#  3. Neither the name of the copyright holder nor the names of its
#     contributors may be used to endorse or promote products derived from
#     this software without specific prior written permission.
#
#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
#  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
#  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
#  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
#  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
#  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
#  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
#  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
#  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
#  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
#  POSSIBILITY OF SUCH DAMAGE.
#

CARGO_PREFIX    = cargo
CARGO_BUILD_DIR = $(BUILD_DIR)/$(CARGO_PREFIX)

ifeq ("$(origin LLVM_TARGET_ARCH)", "undefined")
CARGO  = cargo
else
CARGO  = cargo --target=$(CONFIG_LLVM_TARGET_ARCH)
endif

# vprefix_cargo $libname,$varname(s)
vprefix_cargo = $(addprefix $(call uc,$(1))_,$(2))

# Transform $libname to archive file name
# cargotoalib $libname(s)
define cargotoalib =
$(addprefix $(CARGO_BUILD_DIR)/,$(join $(dir $(1)),\
	$(addsuffix .a,$(addprefix lib,$(notdir $(1))))))
endef

# buildrule_cargo $libname,$source,$variant,$target,$extraflags
# $$(RUSTCFLAGS) $$(RUSTCFLAGS-y) $$(RUSTCFLAGS_EXTRA)
define buildrule_toml =
$(call mk_sub_build_dir,$(CARGO_PREFIX))
$(call cargotoalib, $(1)): $(2) $(4) 
	$(call build_cmd,CARGO,$(1),$(2),\
                UK_CINCLUDES="$$(CINCLUDES) $$(CINCLUDES-y) $$($(call vprefix_cargo,$(1),CINCLUDES)) $$($(call vprefix_cargo,$(1),CINCLUDES-y))" \
                $(CARGO) $$($(call vprefix_cargo,$(1),RUSTCHANNEL)) $(RUSTC) \
                        --manifest-path=$(2) \
                        $$($(call vprefix_cargo,$(1),CARGOFLAGS)) $$($(call vprefix_cargo,$(1),CARGOFLAGS-y)) \
                        -- \
                        $$($(call vprefix_cargo,$(1),RUSTCFLAGS)) $$($(call vprefix_cargo,$(1),RUSTCFLAGS-y)) \
                        $$($(call vprefix_src,$(1),$(2),$(3),FLAGS)) $$($(call vprefix_src,$(1),$(2),$(3),FLAGS-y)) \
                        --cfg '__LIBNAME__="$(1)"' $(if $(3),--cfg '__VARIANT__="$(3)"') \
                        $$(CARGOFLAGS) $$(CARGOFLAGS-y) \
                        --emit link=$(call cargotoalib, $(1))\
        )
UK_SRCS-y += $(2)
UK_ALIBS-y += $(call cargotoalib, $(1))
$(eval $(call vprefix_cargo,$(1),CLEAN-y) += $(call build_clean,$(call cargotoalib, $(1))))
.PHONY: $(4)
endef