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/compiler.go b/cc/compiler.go
index 9a961cf..e52a6c3 100644
--- a/cc/compiler.go
+++ b/cc/compiler.go
@@ -772,6 +772,9 @@
// be added to the include path using -I
Local_include_dirs []string `android:"arch_variant,variant_prepend"`
+ // list of Rust static libraries.
+ Static_rlibs []string `android:"arch_variant,variant_prepend"`
+
// list of static libraries that provide headers for this binding.
Static_libs []string `android:"arch_variant,variant_prepend"`