1# Copyright (C) 2022 The Android Open Source Project
2#
3# Licensed under the Apache License, Version 2.0 (the "License");
4# you may not use this file except in compliance with the License.
5# You may obtain a copy of the License at
6#
7#      http://www.apache.org/licenses/LICENSE-2.0
8#
9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS,
11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12# See the License for the specific language governing permissions and
13# limitations under the License.
14#
15
16LOCAL_DIR := $(GET_LOCAL_DIR)
17
18MODULE := $(LOCAL_DIR)
19
20LIBSTD_DIR = $(RUST_BINDIR)/../src/stdlibs/library/std
21
22MODULE_SRCS := $(LIBSTD_DIR)/src/lib.rs
23
24MODULE_CRATE_NAME := std
25
26MODULE_RUST_EDITION := 2021
27
28MODULE_LIBRARY_EXPORTED_DEPS += \
29	$(call FIND_CRATE,cfg-if) \
30	trusty/user/base/lib/libcore-rust \
31	$(call FIND_CRATE,libc) \
32	trusty/user/base/lib/liballoc-rust \
33	trusty/user/base/lib/libunwind-rust \
34	trusty/user/base/lib/libhashbrown-rust \
35	trusty/user/base/lib/libstd_detect-rust \
36	trusty/user/base/lib/librustc-demangle-rust \
37	trusty/user/base/lib/libpanic_abort-rust \
38
39MODULE_RUSTFLAGS += \
40	--cfg 'backtrace_in_libstd' \
41	-Z force-unstable-if-unmarked \
42
43# Suppress known warnings. The libstd source code generates warnings which are
44# normally suppressed with `--cap-lints=allow` during the rustbuild process. We
45# opt to suppress lints individually in order to avoid missing warnings that
46# might be specific to the Trusty build process. These may need to be updated
47# for future Rust releases.
48MODULE_RUSTFLAGS += \
49	-A unused-variables \
50	-A non-fmt-panics \
51	-A deprecated \
52
53MODULE_ADD_IMPLICIT_DEPS := false
54
55# Allow targets to further reduce rust footprint by removing panic information
56ifeq (true,$(call TOBOOL,$(RUST_USE_PANIC_IMMEDIATE_ABORT)))
57MODULE_RUSTFLAGS += \
58	--cfg 'feature="panic_immediate_abort"' \
59	-A unused-imports \
60	-A unused-unsafe \
61
62endif
63
64# `STD_ENV_ARCH` needs to be set when building libstd. For ARM64 `ARCH` needs to
65# be translated to the architecture name that rustc expects, but for the
66# remaining targets `ARCH` already matches. This will need to be updated
67# accordingly if we add support for additional targets where `ARCH` doesn't line
68# up with rustc's architecture names.
69ifeq ($(ARCH),arm64)
70MODULE_RUST_ENV += STD_ENV_ARCH=aarch64
71else
72MODULE_RUST_ENV += STD_ENV_ARCH=$(ARCH)
73endif
74
75MODULE_SKIP_DOCS := true
76
77include make/library.mk
78