refactor(core/build): remove hardcoded build path

[no changelog]

core/SConscript.bootloader

@@ -283,8 +283,9 @@ def cargo_build():
     ]
 
     bindgen_macros = tools.get_bindgen_defines(env.get("CPPDEFINES"), ALLPATHS)
+    build_dir = str(Dir('.').abspath)
 
-    return f'export BINDGEN_MACROS=\'{bindgen_macros}\'; cd embed/rust; cargo build {profile} ' + ' '.join(cargo_opts)
+    return f'export BINDGEN_MACROS=\'{bindgen_macros}\'; export BUILD_DIR=\'{build_dir}\'; cd embed/rust; cargo build {profile} ' + ' '.join(cargo_opts)
 
 rust = env.Command(
     target=RUST_LIBPATH,

core/SConscript.bootloader_emu

@@ -300,8 +300,9 @@ def cargo_build():
     ]
 
     bindgen_macros = tools.get_bindgen_defines(env.get("CPPDEFINES"), ALLPATHS)
+    build_dir = str(Dir('.').abspath)
 
-    return f'export BINDGEN_MACROS=\'{bindgen_macros}\'; cd embed/rust; cargo build --profile {RUST_PROFILE} ' + ' '.join(cargo_opts)
+    return f'export BINDGEN_MACROS=\'{bindgen_macros}\'; export BUILD_DIR=\'{build_dir}\'; cd embed/rust; cargo build --profile {RUST_PROFILE} ' + ' '.join(cargo_opts)
 
 rust = env.Command(
     target=RUST_LIBPATH,

core/SConscript.firmware

@@ -861,8 +861,9 @@ def cargo_build():
     env.get('ENV')['TREZOR_MODEL'] = TREZOR_MODEL
 
     bindgen_macros = tools.get_bindgen_defines(env.get("CPPDEFINES"), ALLPATHS)
+    build_dir = str(Dir('.').abspath)
 
-    return f'export BINDGEN_MACROS=\'{bindgen_macros}\'; cd embed/rust; cargo build {profile} ' + ' '.join(cargo_opts)
+    return f'export BINDGEN_MACROS=\'{bindgen_macros}\'; export BUILD_DIR=\'{build_dir}\'; cd embed/rust; cargo build {profile} ' + ' '.join(cargo_opts)
 
 rust = env.Command(
     target=RUST_LIBPATH,

core/SConscript.unix

@@ -897,8 +897,9 @@ def cargo_build():
     env.get('ENV')['TREZOR_MODEL'] = TREZOR_MODEL
 
     bindgen_macros = tools.get_bindgen_defines(env.get("CPPDEFINES"), ALLPATHS)
+    build_dir = str(Dir('.').abspath)
 
-    return f'export BINDGEN_MACROS=\'{bindgen_macros}\'; cd embed/rust; cargo build --profile {RUST_PROFILE} --target-dir=../../build/unix/rust --no-default-features --features "{" ".join(features)}"  --target {TARGET}'
+    return f'export BINDGEN_MACROS=\'{bindgen_macros}\'; export BUILD_DIR=\'{build_dir}\'; cd embed/rust; cargo build --profile {RUST_PROFILE} --target-dir=../../build/unix/rust --no-default-features --features "{" ".join(features)}"  --target {TARGET}'
 
 rust = env.Command(
     target=RUST_LIBPATH,

core/embed/rust/build.rs

@@ -14,6 +14,10 @@ fn main() {
     link_core_objects();
 }
 
+fn build_dir() -> String {
+    env::var("BUILD_DIR").expect("BUILD_DIR not defined")
+}
+
 const DEFAULT_BINDGEN_MACROS_COMMON: &[&str] = &[
     "-I../unix",
     "-I../trezorhal/unix",
@@ -94,14 +98,7 @@ fn generate_qstr_bindings() {
             is_global: false,
         })
         // Pass in correct include paths.
-        .clang_args(&[
-            "-I",
-            if is_firmware() {
-                "../../build/firmware"
-            } else {
-                "../../build/unix"
-            },
-        ])
+        .clang_args(&["-I", &build_dir()])
         // Customize the standard types.
         .use_core()
         .ctypes_prefix("cty")
@@ -127,6 +124,8 @@ fn generate_qstr_bindings() {
 fn prepare_bindings() -> bindgen::Builder {
     let mut bindings = bindgen::Builder::default();
 
+    let build_dir_include = format!("-I{}", build_dir());
+
     let mut clang_args: Vec<&str> = Vec::new();
 
     let bindgen_macros_env = env::var("BINDGEN_MACROS").ok();
@@ -142,12 +141,12 @@ fn prepare_bindings() -> bindgen::Builder {
         bindings = bindings.clang_args(["-DNEW_RENDERING"]);
     }
 
+    clang_args.push(&build_dir_include);
+
     // Pass in correct include paths and defines.
     if is_firmware() {
         clang_args.push("-nostdinc");
 
-        clang_args.push("-I../../build/firmware");
-
         // Append gcc-arm-none-eabi's include paths.
         let cc_output = Command::new("arm-none-eabi-gcc")
             .arg("-E")
@@ -168,8 +167,6 @@ fn prepare_bindings() -> bindgen::Builder {
             .map(|s| format!("-I{}", s.trim()));
 
         bindings = bindings.clang_args(include_args);
-    } else {
-        clang_args.push("-I../../build/unix");
     }
 
     bindings = bindings.clang_args(&clang_args);

core/embed/rust/src/protobuf/defs.rs

@@ -109,24 +109,9 @@ struct NameDef {
     msg_offset: u16,
 }
 
-#[cfg(target_arch = "arm")]
 macro_rules! proto_def_path {
     ($filename:expr) => {
-        concat!(
-            env!("CARGO_MANIFEST_DIR"),
-            "/../../build/firmware/rust/",
-            $filename
-        )
-    };
-}
-#[cfg(not(target_arch = "arm"))]
-macro_rules! proto_def_path {
-    ($filename:expr) => {
-        concat!(
-            env!("CARGO_MANIFEST_DIR"),
-            "/../../build/unix/rust/",
-            $filename
-        )
+        concat!(env!("BUILD_DIR"), "/rust/", $filename)
     };
 }