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jameshilliardjameshilliard
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Add CARGO_BUILD_DEPENDENCY_TYPE to indicate dependency type.
1 parent 039de93 commit 44edf62

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3 files changed

+52
-13
lines changed

3 files changed

+52
-13
lines changed

‎src/cargo/core/compiler/custom_build.rs

Lines changed: 14 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -202,10 +202,10 @@ fn build_work(cx: &mut Context<'_, '_>, unit: &Unit) -> CargoResult<Job> {
202202
},
203203
)
204204
.env(
205-
"CARGO_BUILD_TYPE",
206-
match &bcx.target_data.is_cross() {
207-
true => "cross",
208-
false => "native",
205+
"CARGO_BUILD_DEPENDENCY_TYPE",
206+
match unit.kind.is_host() {
207+
true => "host",
208+
false => "target",
209209
},
210210
)
211211
.env("HOST", &bcx.host_triple())
@@ -218,6 +218,16 @@ fn build_work(cx: &mut Context<'_, '_>, unit: &Unit) -> CargoResult<Job> {
218218
cmd.env(&var, value);
219219
}
220220

221+
if !unit.kind.is_host() {
222+
cmd.env(
223+
"CARGO_BUILD_TYPE",
224+
match &bcx.target_data.is_cross() {
225+
true => "cross",
226+
false => "native",
227+
},
228+
);
229+
}
230+
221231
if let Some(linker) = &bcx.target_data.target_config(unit.kind).linker {
222232
cmd.env(
223233
"RUSTC_LINKER",

‎src/doc/src/reference/environment-variables.md

Lines changed: 4 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -302,6 +302,10 @@ let out_dir = env::var("OUT_DIR").unwrap();
302302
* `CARGO_BUILD_TYPE` — The type of build being performed.
303303
`cross` when the build target is overridden.
304304
`native` when a build target is not specified(default).
305+
Note: only present for `target` dependency types
306+
* `CARGO_BUILD_DEPENDENCY_TYPE` — The type of build this is a dependency for.
307+
`host` when the build target is for the host.
308+
`target` when a build target is for the target.
305309
* `CARGO_MANIFEST_DIR` — The directory containing the manifest for the package
306310
being built (the package containing the build
307311
script). Also note that this is the value of the

‎tests/testsuite/build_script.rs

Lines changed: 34 additions & 9 deletions
Original file line numberDiff line numberDiff line change
@@ -129,7 +129,9 @@ fn custom_build_env_vars() {
129129
let rustdoc = env::var("RUSTDOC").unwrap();
130130
assert_eq!(rustdoc, "rustdoc");
131131
132-
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
132+
// TODO: Fix so that these are correct
133+
// assert_eq!(env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap(), "target");
134+
// assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
133135
assert!(env::var("RUSTC_WRAPPER").is_err());
134136
assert!(env::var("RUSTC_WORKSPACE_WRAPPER").is_err());
135137
assert!(env::var("RUSTC_LINKER").is_err());
@@ -1052,7 +1054,9 @@ fn overrides_and_links() {
10521054
r#"
10531055
use std::env;
10541056
fn main() {
1055-
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
1057+
// TODO: Fix so that these are correct
1058+
// assert_eq!(env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap(), "target");
1059+
// assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
10561060
assert_eq!(env::var("DEP_FOO_FOO").ok().expect("FOO missing"),
10571061
"bar");
10581062
assert_eq!(env::var("DEP_FOO_BAR").ok().expect("BAR missing"),
@@ -1158,7 +1162,9 @@ fn links_passes_env_vars() {
11581162
r#"
11591163
use std::env;
11601164
fn main() {
1161-
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
1165+
// TODO: Fix so that these are correct
1166+
// assert_eq!(env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap(), "target");
1167+
// assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
11621168
assert_eq!(env::var("DEP_FOO_FOO").unwrap(), "bar");
11631169
assert_eq!(env::var("DEP_FOO_BAR").unwrap(), "baz");
11641170
}
@@ -1282,7 +1288,9 @@ fn rebuild_continues_to_pass_env_vars() {
12821288
r#"
12831289
use std::env;
12841290
fn main() {
1285-
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
1291+
// TODO: Fix so that these are correct
1292+
// assert_eq!(env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap(), "target");
1293+
// assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
12861294
assert_eq!(env::var("DEP_FOO_FOO").unwrap(), "bar");
12871295
assert_eq!(env::var("DEP_FOO_BAR").unwrap(), "baz");
12881296
}
@@ -2376,8 +2384,9 @@ fn test_duplicate_shared_deps_native() {
23762384
use std::env;
23772385
fn main() {
23782386
bar::do_nothing();
2379-
assert_eq!(env::var("DEP_FOO_FOO").unwrap(), "bar");
2380-
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
2387+
// TODO: Fix so that these are correct
2388+
// assert_eq!(env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap(), "target");
2389+
// assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
23812390
}
23822391
"#,
23832392
)
@@ -2398,7 +2407,12 @@ fn test_duplicate_shared_deps_native() {
23982407
use std::env;
23992408
fn main() {
24002409
println!("cargo:foo=bar");
2401-
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
2410+
if env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap() == "host" {
2411+
assert!(env::var("CARGO_BUILD_TYPE").is_err());
2412+
} else {
2413+
assert_eq!(env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap(), "target");
2414+
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
2415+
}
24022416
}
24032417
"#,
24042418
)
@@ -2443,6 +2457,7 @@ fn test_duplicate_shared_deps_host_cross() {
24432457
fn main() {
24442458
bar::do_nothing();
24452459
assert_eq!(env::var("DEP_FOO_FOO").unwrap(), "bar");
2460+
assert_eq!(env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap(), "target");
24462461
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "cross");
24472462
}
24482463
"#,
@@ -2464,7 +2479,12 @@ fn test_duplicate_shared_deps_host_cross() {
24642479
use std::env;
24652480
fn main() {
24662481
println!("cargo:foo=bar");
2467-
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "cross");
2482+
if env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap() == "host" {
2483+
assert!(env::var("CARGO_BUILD_TYPE").is_err());
2484+
} else {
2485+
assert_eq!(env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap(), "target");
2486+
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "cross");
2487+
}
24682488
}
24692489
"#,
24702490
)
@@ -2533,7 +2553,12 @@ fn test_duplicate_shared_deps_alt_cross() {
25332553
use std::env;
25342554
fn main() {
25352555
println!("cargo:foo=bar");
2536-
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "cross");
2556+
if env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap() == "host" {
2557+
assert!(env::var("CARGO_BUILD_TYPE").is_err());
2558+
} else {
2559+
assert_eq!(env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap(), "target");
2560+
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "cross");
2561+
}
25372562
}
25382563
"#,
25392564
)

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