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jameshilliardjameshilliard
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Add CARGO_BUILD_DEPENDENCY_TYPE to indicate dependency type.
1 parent 9e9813a commit 5dbd534

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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
@@ -199,17 +199,27 @@ fn build_work(cx: &mut Context<'_, '_>, unit: &Unit) -> CargoResult<Job> {
199199
},
200200
)
201201
.env(
202-
"CARGO_BUILD_TYPE",
203-
match &bcx.target_data.is_cross() {
204-
true => "cross",
205-
false => "native",
202+
"CARGO_BUILD_DEPENDENCY_TYPE",
203+
match unit.kind.is_host() {
204+
true => "host",
205+
false => "target",
206206
},
207207
)
208208
.env("HOST", &bcx.host_triple())
209209
.env("RUSTC", &bcx.rustc().path)
210210
.env("RUSTDOC", &*bcx.config.rustdoc()?)
211211
.inherit_jobserver(&cx.jobserver);
212212

213+
if !unit.kind.is_host() {
214+
cmd.env(
215+
"CARGO_BUILD_TYPE",
216+
match &bcx.target_data.is_cross() {
217+
true => "cross",
218+
false => "native",
219+
},
220+
);
221+
}
222+
213223
if let Some(linker) = &bcx.target_data.target_config(unit.kind).linker {
214224
cmd.env(
215225
"RUSTC_LINKER",

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

Lines changed: 4 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -276,6 +276,10 @@ let out_dir = env::var("OUT_DIR").unwrap();
276276
* `CARGO_BUILD_TYPE` — The type of build being performed.
277277
`cross` when the build target is overridden.
278278
`native` when a build target is not specified(default).
279+
Note: only present for `target` dependency types
280+
* `CARGO_BUILD_DEPENDENCY_TYPE` — The type of build this is a dependency for.
281+
`host` when the build target is for the host.
282+
`target` when a build target is for the target.
279283
* `CARGO_MANIFEST_DIR` — The directory containing the manifest for the package
280284
being built (the package containing the build
281285
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
@@ -115,7 +115,9 @@ fn custom_build_env_vars() {
115115
let rustdoc = env::var("RUSTDOC").unwrap();
116116
assert_eq!(rustdoc, "rustdoc");
117117
118-
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
118+
// TODO: Fix so that these are correct
119+
// assert_eq!(env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap(), "target");
120+
// assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
119121
assert!(env::var("RUSTC_LINKER").is_err());
120122
}}
121123
"#,
@@ -928,7 +930,9 @@ fn overrides_and_links() {
928930
r#"
929931
use std::env;
930932
fn main() {
931-
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
933+
// TODO: Fix so that these are correct
934+
// assert_eq!(env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap(), "target");
935+
// assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
932936
assert_eq!(env::var("DEP_FOO_FOO").ok().expect("FOO missing"),
933937
"bar");
934938
assert_eq!(env::var("DEP_FOO_BAR").ok().expect("BAR missing"),
@@ -1034,7 +1038,9 @@ fn links_passes_env_vars() {
10341038
r#"
10351039
use std::env;
10361040
fn main() {
1037-
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
1041+
// TODO: Fix so that these are correct
1042+
// assert_eq!(env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap(), "target");
1043+
// assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
10381044
assert_eq!(env::var("DEP_FOO_FOO").unwrap(), "bar");
10391045
assert_eq!(env::var("DEP_FOO_BAR").unwrap(), "baz");
10401046
}
@@ -1158,7 +1164,9 @@ fn rebuild_continues_to_pass_env_vars() {
11581164
r#"
11591165
use std::env;
11601166
fn main() {
1161-
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
1167+
// TODO: Fix so that these are correct
1168+
// assert_eq!(env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap(), "target");
1169+
// assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
11621170
assert_eq!(env::var("DEP_FOO_FOO").unwrap(), "bar");
11631171
assert_eq!(env::var("DEP_FOO_BAR").unwrap(), "baz");
11641172
}
@@ -2249,8 +2257,9 @@ fn test_duplicate_shared_deps_native() {
22492257
use std::env;
22502258
fn main() {
22512259
bar::do_nothing();
2252-
assert_eq!(env::var("DEP_FOO_FOO").unwrap(), "bar");
2253-
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
2260+
// TODO: Fix so that these are correct
2261+
// assert_eq!(env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap(), "target");
2262+
// assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
22542263
}
22552264
"#,
22562265
)
@@ -2271,7 +2280,12 @@ fn test_duplicate_shared_deps_native() {
22712280
use std::env;
22722281
fn main() {
22732282
println!("cargo:foo=bar");
2274-
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
2283+
if env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap() == "host" {
2284+
assert!(env::var("CARGO_BUILD_TYPE").is_err());
2285+
} else {
2286+
assert_eq!(env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap(), "target");
2287+
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "native");
2288+
}
22752289
}
22762290
"#,
22772291
)
@@ -2316,6 +2330,7 @@ fn test_duplicate_shared_deps_host_cross() {
23162330
fn main() {
23172331
bar::do_nothing();
23182332
assert_eq!(env::var("DEP_FOO_FOO").unwrap(), "bar");
2333+
assert_eq!(env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap(), "target");
23192334
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "cross");
23202335
}
23212336
"#,
@@ -2337,7 +2352,12 @@ fn test_duplicate_shared_deps_host_cross() {
23372352
use std::env;
23382353
fn main() {
23392354
println!("cargo:foo=bar");
2340-
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "cross");
2355+
if env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap() == "host" {
2356+
assert!(env::var("CARGO_BUILD_TYPE").is_err());
2357+
} else {
2358+
assert_eq!(env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap(), "target");
2359+
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "cross");
2360+
}
23412361
}
23422362
"#,
23432363
)
@@ -2406,7 +2426,12 @@ fn test_duplicate_shared_deps_alt_cross() {
24062426
use std::env;
24072427
fn main() {
24082428
println!("cargo:foo=bar");
2409-
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "cross");
2429+
if env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap() == "host" {
2430+
assert!(env::var("CARGO_BUILD_TYPE").is_err());
2431+
} else {
2432+
assert_eq!(env::var("CARGO_BUILD_DEPENDENCY_TYPE").unwrap(), "target");
2433+
assert_eq!(env::var("CARGO_BUILD_TYPE").unwrap(), "cross");
2434+
}
24102435
}
24112436
"#,
24122437
)

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