1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
# 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 ($(HOST_ARCH),arm64)
RUSTC_HOST_ARCH:=aarch64-apple-darwin
else ifeq ($(HOST_ARCH),x86_64)
RUSTC_HOST_ARCH:=x86_64-apple-darwin
endif
endif
# mips64 openwrt has a specific target 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
# 32-bit PowerPC has both soft-float and hard-float subtargets: mpc85xx is an
# e500v2 with no floating-point unit at all, while apm821xx (powerpc_464fp)
# has one. They share the powerpc-unknown-linux-musl triple, which is the
# hard-float one, so on the soft-float subtarget rustc emits lfd, stfd and
# fdiv for a core with no floating-point registers, and passes doubles in
# registers nothing else in the image uses.
#
# CONFIG_SOFT_FLOAT already carries this: it defaults to y when the target has
# no fpu feature, and it is what puts --with-float=soft into the toolchain and
# -msoft-float into TARGET_CFLAGS.
ifeq ($(ARCH),powerpc)
ifeq ($(CONFIG_SOFT_FLOAT),y)
RUSTC_TARGET_RUSTFLAGS+=-Ctarget-feature=-hard-float
endif
endif
CARGO_RUSTFLAGS+=$(RUSTC_TARGET_RUSTFLAGS)
# ARM Logic
ifeq ($(ARCH),arm)
ifeq ($(CONFIG_arm_v6)$(CONFIG_arm_v7),)
RUSTC_TARGET_ARCH:=$(subst arm,armv5te,$(RUSTC_TARGET_ARCH))
else 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
# The same flags have to reach the std that rust/host builds for the target,
# or std and the packages linked against it disagree about how a double is
# passed. Bootstrap sets RUSTFLAGS itself on the cargo invocations it spawns,
# so setting that would be overwritten; it does however read
# CARGO_TARGET_<TRIPLE>_RUSTFLAGS and fold it in, scoped to that triple, which
# leaves the host artifacts built in the same run untouched.
# Deferred, because the blocks above still rewrite RUSTC_TARGET_ARCH.
RUSTC_TARGET_UPPER = $(subst -,_,$(call toupper,$(RUSTC_TARGET_ARCH)))
RUSTC_TARGET_CARGO_RUSTFLAGS = CARGO_TARGET_$(RUSTC_TARGET_UPPER)_RUSTFLAGS
# Support only a subset for now.
RUST_ARCH_DEPENDS:=@(aarch64||arm||i386||loongarch64||mips||mips64||mips64el||mipsel||powerpc||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=$(CARGO_HOME) \
CARGO_PROFILE_RELEASE_CODEGEN_UNITS=1 \
CARGO_PROFILE_RELEASE_DEBUG=false \
CARGO_PROFILE_RELEASE_DEBUG_ASSERTIONS=false \
CARGO_PROFILE_RELEASE_LTO=true \
CARGO_PROFILE_RELEASE_OPT_LEVEL=z \
CARGO_PROFILE_RELEASE_OVERFLOW_CHECKS=true \
CARGO_PROFILE_RELEASE_PANIC=unwind \
CARGO_PROFILE_RELEASE_RPATH=false \
CARGO_TARGET_$(RUSTC_TARGET_UPPER)_LINKER=$(TARGET_CC_NOCACHE) \
RUSTFLAGS="$(CARGO_RUSTFLAGS)" \
TARGET_CC=$(TARGET_CC_NOCACHE) \
TARGET_CFLAGS="$(TARGET_CFLAGS) $(RUSTC_CFLAGS)"
CARGO_PKG_PROFILE:=$(if $(CONFIG_DEBUG),dev,release)
CARGO_RUSTFLAGS+=-Clink-arg=-fuse-ld=$(TARGET_LINKER)
|
