rust: made-to-order rust staticlibs
Whenever any two Rust static libraries are included
as static libraries anywhere in a CC dependency tree, we sometimes
get duplicate symbol errors. To avoid this, we no longer
directly link multiple rust static libs to CC modules.
Instead, we build rust_ffi_rlib modules and produce the actual
static library that gets linked against the CC module based on
that CC module's full list of Rust rlib dependencies.
This introduces a new static_rlibs property for cc modules to
define the rust_ffi_rlib dependencies, which are then used to
generate the module above.
This CL is intended to deprecate rust_ffi_static. It leaves
rust_ffi_static and rust_ffi static variants in place until
the remaining rust_ffi_static declarations and uses can be
removed. In the meantime, rust_ffi_static produces
rust_ffi_rlib variants as well to make the transition easier.
Bug: 254469782
Test: m # with no changes
Test: m libapexsupport # with static_rlibs
Test: m libunwindstack # with static_rlibs
Test: m netsimd # with static_rlibs, no duplicate symbols
Test: m blueprint_tests # New Soong tests
Change-Id: I47e27ac967ef0cad46d398ebf59d8275929ae28a
diff --git a/cc/binary.go b/cc/binary.go
index 7aa8e20..3ff35de 100644
--- a/cc/binary.go
+++ b/cc/binary.go
@@ -18,6 +18,7 @@
"path/filepath"
"android/soong/android"
+
"github.com/google/blueprint"
)
@@ -425,6 +426,10 @@
validations = append(validations, objs.tidyDepFiles...)
linkerDeps = append(linkerDeps, flags.LdFlagsDeps...)
+ if generatedLib := generateRustStaticlib(ctx, deps.RustRlibDeps); generatedLib != nil {
+ deps.StaticLibs = append(deps.StaticLibs, generatedLib)
+ }
+
// Register link action.
transformObjToDynamicBinary(ctx, objs.objFiles, sharedLibs, deps.StaticLibs,
deps.LateStaticLibs, deps.WholeStaticLibs, linkerDeps, deps.CrtBegin, deps.CrtEnd, true,