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

# The Android toolchain, built.
#
# There is no Android graph in this repo yet — the third-party crates have no
# Android platform in reindeer.toml, so nothing that depends on them can be
# configured for the device — so these are what keep the toolchain honest in
# the meantime. One C object, compiled by the NDK's clang against bionic's
# headers, and one Rust one, compiled against the device's libstd and linked
# by that same clang. Both configured for the device, neither shipping.
#
#   just buck build toolchains//selftest:abi-android
#   just buck build toolchains//selftest:std-android
cxx_library(
    name = "abi",
    srcs = ["abi.c"],
    visibility = ["PUBLIC"],
)

# The target configuration moves; the execution platform does not. Building
# `:abi` directly would compile it for the host, where it is meant to fail.
configured_alias(
    name = "abi-android",
    actual = ":abi",
    platform = "root//platforms:android-arm64",
    visibility = ["PUBLIC"],
)

rust_library(
    name = "std",
    srcs = ["abi.rs"],
    crate_root = "abi.rs",
    edition = "2021",
    # Shared, so the link runs: a rlib would prove rustc found the target
    # libstd and nothing about whether the linker can produce a device object.
    preferred_linkage = "shared",
    visibility = ["PUBLIC"],
)

configured_alias(
    name = "std-android",
    actual = ":std",
    platform = "root//platforms:android-arm64",
    visibility = ["PUBLIC"],
)