xref: /aosp_15_r20/external/bazelbuild-rules_rust/test/extra_exec_rustc_flags/BUILD.bazel (revision d4726bddaa87cc4778e7472feed243fa4b6c267f) 
1load("@bazel_skylib//rules:build_test.bzl", "build_test")
2load("@rules_rust//rust:defs.bzl", "rust_library")
3load("defs.bzl", "with_exec_cfg", "with_extra_exec_rustc_flags_cfg")
4
5package(default_visibility = ["//test:__subpackages__"])
6
7# Checks that extra_exec_rustc_flags are passed in exec configuration.
8# lib.rs is a sample source file that requires a `--cfg=bazel_exec` flag to build.
9# These targets set up transitions so that building :lib triggers building
10# lib.rs in exec configuration with //:extra_exec_rustc_flags=[--cfg=bazel_exec].
11# The intermediate targets are tagged "manual" as they are not meant to be built
12# on their own.
13
14rust_library(
15    name = "lib_do_not_build_directly",
16    srcs = ["lib.rs"],
17    edition = "2018",
18    tags = ["manual"],
19)
20
21with_extra_exec_rustc_flags_cfg(
22    name = "lib_with_exec_flags_do_not_build_directly",
23    srcs = ["lib_do_not_build_directly"],
24    extra_exec_rustc_flag = [],
25    extra_exec_rustc_flags = ["--cfg=bazel_exec"],
26    tags = ["manual"],
27)
28
29with_extra_exec_rustc_flags_cfg(
30    name = "lib_with_singular_exec_flags_do_not_build_directly",
31    srcs = ["lib_do_not_build_directly"],
32    extra_exec_rustc_flag = ["--cfg=bazel_exec"],
33    extra_exec_rustc_flags = [],
34    tags = ["manual"],
35)
36
37with_exec_cfg(
38    name = "lib",
39    srcs = ["lib_with_exec_flags_do_not_build_directly"],
40)
41
42with_exec_cfg(
43    name = "lib_singular",
44    srcs = ["lib_with_singular_exec_flags_do_not_build_directly"],
45)
46
47# Checks that extra_exec_rustc_flags are not passed in non-exec configurations.
48# lib_no_exec.rs is a sample source file that fails to build if
49# `--cfg=bazel_exec` is present. The targets below are built in non-exec configurations,
50# so they should build just fine with //:extra_exec_rustc_flags=[--cfg=bazel_exec].
51rust_library(
52    name = "lib_no_exec",
53    srcs = ["lib_no_exec.rs"],
54    edition = "2018",
55)
56
57with_extra_exec_rustc_flags_cfg(
58    name = "lib_no_exec_with_extra_build_flags",
59    srcs = ["lib_no_exec"],
60    extra_exec_rustc_flag = [],
61    extra_exec_rustc_flags = ["--cfg=bazel_exec"],
62)
63
64with_extra_exec_rustc_flags_cfg(
65    name = "lib_no_exec_with_singular_extra_build_flags",
66    srcs = ["lib_no_exec"],
67    extra_exec_rustc_flag = ["--cfg=bazel_exec"],
68    extra_exec_rustc_flags = [],
69)
70
71build_test(
72    name = "lib_build",
73    targets = [
74        ":lib",
75        ":lib_singular",
76        ":lib_no_exec",
77        ":lib_no_exec_with_extra_build_flags",
78        ":lib_no_exec_with_singular_extra_build_flags",
79    ],
80)
81