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# SPDX-License-Identifier: GPL-2.0-only
#
# Copyright (C) 2023 Luca Barbato and Donald Hoskins
# Clear environment variables which should be handled internally,
# as users might configure their own env on the host
# CCache
unexport RUSTC_WRAPPER
# Rust Environmental Vars
RUSTC_HOST_SUFFIX:=$(word 4, $(subst -, ,$(GNU_HOST_NAME)))
RUSTC_HOST_ARCH:=$(HOST_ARCH)-unknown-linux-$(RUSTC_HOST_SUFFIX)
CARGO_HOME:=$(DL_DIR)/cargo
ifeq ($(CONFIG_USE_MUSL),y)
# Force linking of the SSP library for musl
ifdef CONFIG_PKG_CC_STACKPROTECTOR_REGULAR
ifeq ($(strip $(PKG_SSP)),1)
RUSTC_LDFLAGS+=-lssp_nonshared
endif
endif
ifdef CONFIG_PKG_CC_STACKPROTECTOR_STRONG
ifeq ($(strip $(PKG_SSP)),1)
RUSTC_LDFLAGS+=-lssp_nonshared
endif
endif
endif
CARGO_RUSTFLAGS+=-Ctarget-feature=-crt-static $(RUSTC_LDFLAGS)
ifeq ($(HOST_OS),Darwin)
ifeq ($(HOST_ARCH),arm64)
RUSTC_HOST_ARCH:=aarch64-apple-darwin
endif
endif
# mips64 openwrt has a specific targed in rustc
ifeq ($(ARCH),mips64)
RUSTC_TARGET_ARCH:=$(REAL_GNU_TARGET_NAME)
else
RUSTC_TARGET_ARCH:=$(subst openwrt,unknown,$(REAL_GNU_TARGET_NAME))
endif
RUSTC_TARGET_ARCH:=$(subst muslgnueabi,musleabi,$(RUSTC_TARGET_ARCH))
ifeq ($(ARCH),i386)
RUSTC_TARGET_ARCH:=$(subst i486,i586,$(RUSTC_TARGET_ARCH))
else ifeq ($(ARCH),riscv64)
RUSTC_TARGET_ARCH:=$(subst riscv64,riscv64gc,$(RUSTC_TARGET_ARCH))
endif
# ARM Logic
ifeq ($(ARCH),arm)
ifeq ($(CONFIG_arm_v7),y)
RUSTC_TARGET_ARCH:=$(subst arm,armv7,$(RUSTC_TARGET_ARCH))
endif
ifeq ($(CONFIG_HAS_FPU),y)
RUSTC_TARGET_ARCH:=$(subst musleabi,musleabihf,$(RUSTC_TARGET_ARCH))
RUSTC_TARGET_ARCH:=$(subst gnueabi,gnueabihf,$(RUSTC_TARGET_ARCH))
endif
endif
ifeq ($(ARCH),aarch64)
RUSTC_CFLAGS:=-mno-outline-atomics
endif
# Support only a subset for now.
RUST_ARCH_DEPENDS:=@(aarch64||arm||i386||i686||mips||mipsel||mips64||mips64el||mipsel||powerpc64||riscv64||x86_64)
ifneq ($(CONFIG_RUST_SCCACHE),)
RUST_SCCACHE_DIR:=$(if $(call qstrip,$(CONFIG_RUST_SCCACHE_DIR)),$(call qstrip,$(CONFIG_RUST_SCCACHE_DIR)),$(TOPDIR)/.sccache)
RUST_SCCACHE_VARS:= \
CARGO_INCREMENTAL=0 \
RUSTC_WRAPPER=sccache \
SCCACHE_DIR=$(RUST_SCCACHE_DIR)
endif
CARGO_HOST_CONFIG_VARS= \
$(RUST_SCCACHE_VARS) \
CARGO_HOME=$(CARGO_HOME)
CARGO_HOST_PROFILE:=release
CARGO_PKG_CONFIG_VARS= \
$(RUST_SCCACHE_VARS) \
CARGO_BUILD_TARGET=$(RUSTC_TARGET_ARCH) \
CARGO_HOME=$(CARGO_HOME) \
CARGO_PROFILE_RELEASE_CODEGEN_UNITS=1 \
CARGO_PROFILE_RELEASE_DEBUG=false \
CARGO_PROFILE_RELEASE_DEBUG_ASSERTIONS=false \
CARGO_PROFILE_RELEASE_LTO=true \
CARGO_PROFILE_RELEASE_OPT_LEVEL=z \
CARGO_PROFILE_RELEASE_OVERFLOW_CHECKS=true \
CARGO_PROFILE_RELEASE_PANIC=unwind \
CARGO_PROFILE_RELEASE_RPATH=false \
CARGO_TARGET_$(subst -,_,$(call toupper,$(RUSTC_TARGET_ARCH)))_LINKER=$(TARGET_CC_NOCACHE) \
RUSTFLAGS="$(CARGO_RUSTFLAGS)" \
TARGET_CC=$(TARGET_CC_NOCACHE) \
TARGET_CFLAGS="$(TARGET_CFLAGS) $(RUSTC_CFLAGS)"
CARGO_PKG_PROFILE:=$(if $(CONFIG_DEBUG),dev,release)
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