Revert "Re-land "Make building Rust targets faster in eng builds""
This reverts commit e3da5ea86b96d2c489e2ae925975925ecf4f7022.
Reason for revert: b/326108486
Change-Id: Ia99c6024f41f863d7a2a2eaea0567c330c2b1a89
diff --git a/rust/builder.go b/rust/builder.go
index e3b4bee..c855cfb 100644
--- a/rust/builder.go
+++ b/rust/builder.go
@@ -122,6 +122,8 @@
func TransformSrcToBinary(ctx ModuleContext, mainSrc android.Path, deps PathDeps, flags Flags,
outputFile android.WritablePath) buildOutput {
+ flags.GlobalRustFlags = append(flags.GlobalRustFlags, "-C lto=thin")
+
return transformSrctoCrate(ctx, mainSrc, deps, flags, outputFile, "bin")
}
@@ -132,16 +134,20 @@
func TransformSrctoDylib(ctx ModuleContext, mainSrc android.Path, deps PathDeps, flags Flags,
outputFile android.WritablePath) buildOutput {
+ flags.GlobalRustFlags = append(flags.GlobalRustFlags, "-C lto=thin")
+
return transformSrctoCrate(ctx, mainSrc, deps, flags, outputFile, "dylib")
}
func TransformSrctoStatic(ctx ModuleContext, mainSrc android.Path, deps PathDeps, flags Flags,
outputFile android.WritablePath) buildOutput {
+ flags.GlobalRustFlags = append(flags.GlobalRustFlags, "-C lto=thin")
return transformSrctoCrate(ctx, mainSrc, deps, flags, outputFile, "staticlib")
}
func TransformSrctoShared(ctx ModuleContext, mainSrc android.Path, deps PathDeps, flags Flags,
outputFile android.WritablePath) buildOutput {
+ flags.GlobalRustFlags = append(flags.GlobalRustFlags, "-C lto=thin")
return transformSrctoCrate(ctx, mainSrc, deps, flags, outputFile, "cdylib")
}
@@ -257,20 +263,6 @@
inputs = append(inputs, main)
- if ctx.Config().Eng() {
- // Per https://doc.rust-lang.org/rustc/codegen-options/index.html#codegen-units
- // incremental building implies codegen-units=256
- incrementalPath := android.PathForModuleOut(ctx, "rustc-incremental").String()
- flags.GlobalRustFlags = append(flags.GlobalRustFlags, "-C incremental="+incrementalPath)
-
- } else {
- flags.GlobalRustFlags = append(flags.GlobalRustFlags, "-C codegen-units=1")
-
- if !(ctx.RustModule().Rlib() || ctx.RustModule().ProcMacro()) {
- flags.GlobalRustFlags = append(flags.GlobalRustFlags, "-C lto=thin")
- }
- }
-
// Collect rustc flags
rustcFlags = append(rustcFlags, flags.GlobalRustFlags...)
rustcFlags = append(rustcFlags, flags.RustFlags...)
@@ -286,6 +278,15 @@
// Suppress an implicit sysroot
rustcFlags = append(rustcFlags, "--sysroot=/dev/null")
+ // Enable incremental compilation if requested by user
+ if ctx.Config().IsEnvTrue("SOONG_RUSTC_INCREMENTAL") {
+ incrementalPath := android.PathForOutput(ctx, "rustc").String()
+
+ rustcFlags = append(rustcFlags, "-C incremental="+incrementalPath)
+ } else {
+ rustcFlags = append(rustcFlags, "-C codegen-units=1")
+ }
+
// Disallow experimental features
modulePath := ctx.ModuleDir()
if !(android.IsThirdPartyPath(modulePath) || strings.HasPrefix(modulePath, "prebuilts")) {