llext: automatically select LLEXT type

When using a clang Cadence toolchain to build SOF and LLEXT modules we need to select a different LLEXT type than when using a Zephyr gcc toolchain. Signed-off-by: Guennadi Liakhovetski <[email protected]>
eddy1021 · Jul 15, 2024 · 203206c · 203206c
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commit 203206c
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diff --git a/app/llext_relocatable.conf b/app/llext_relocatable.conf
@@ -0,0 +1 @@
+CONFIG_LLEXT_TYPE_ELF_RELOCATABLE=y
diff --git a/scripts/xtensa-build-zephyr.py b/scripts/xtensa-build-zephyr.py
@@ -812,6 +812,12 @@ def build_platforms():
 		if args.debug:
 			overlays.append(str(pathlib.Path(SOF_TOP, "app", "debug_overlay.conf")))
 
+		# The xt-cland Cadence toolchain currently cannot link shared
+		# libraries for Xtensa. Therefore when it's used we switch to
+		# building relocatable ELF objects.
+		if platf_build_environ.get("ZEPHYR_TOOLCHAIN_VARIANT") == 'xt-clang':
+			overlays.append(str(pathlib.Path(SOF_TOP, "app", "llext_relocatable.conf")))
+
 		if overlays:
 			overlays = ";".join(overlays)
 			build_cmd.append(f"-DOVERLAY_CONFIG={overlays}")