[rust][tools] Fix Rust build example configuration handling

Improve the Rust build integration across core, applications, components, and module examples. Fix build failure propagation, target and feature handling, linker flags, example configuration semantics, and add STM32 CI attach coverage.

1 files changed, 14 insertions, 11 deletions

diff --git a/components/rust/examples/component/SConscript b/components/rust/examples/component/SConscript
index 40d11c0446..ccfa01673b 100644
--- a/components/rust/examples/component/SConscript
+++ b/components/rust/examples/component/SConscript
@@ -6,7 +6,7 @@ cwd = GetCurrentDir()
 
 # Import component build module and build support
 sys.path.append(os.path.join(cwd, '../../tools'))
-from build_component import build_example_component
+from build_component import ComponentBuildError, build_example_component
 from build_support import clean_rust_build
 
 # Load feature configurations
@@ -25,12 +25,11 @@ def _has(sym: str) -> bool:
         return bool(GetDepend(sym))
 
 
-# Early return if Rust or log component is not enabled
-if not _has('RT_USING_RUST'):
+if not _has('RT_USING_RUST') and not GetOption('clean'):
     group = []
     Return('group')
 
-if not _has('RUST_LOG_COMPONENT'):
+if not (_has('RT_RUST_BUILD_COMPONENTS') or _has('RT_RUST_BUILD_ALL_EXAMPLES')) and not GetOption('clean'):
     group = []
     Return('group')
 
@@ -51,12 +50,16 @@ if GetOption('clean'):
 else:
     # Build the component using the extracted build module
     import rtconfig
-    LIBS, LIBPATH, LINKFLAGS = build_example_component(
-        cwd=cwd,
-        has_func=_has,
-        rtconfig=rtconfig,
-        build_root=os.path.join(Dir('#').abspath, "build", "example_component")
-    )
+    try:
+        LIBS, LIBPATH, LINKFLAGS = build_example_component(
+            cwd=cwd,
+            has_func=_has,
+            rtconfig=rtconfig,
+            build_root=os.path.join(Dir('#').abspath, "build", "example_component")
+        )
+    except ComponentBuildError as e:
+        print(f'Error: {e}')
+        sys.exit(1)
 
 # Define component group for SCons
 group = DefineGroup(
@@ -68,4 +71,4 @@ group = DefineGroup(
     LINKFLAGS=LINKFLAGS
 )
 
-Return('group')
\ No newline at end of file
+Return('group')