diff --git a/arch/nios2/soc/nios2-qemu/CMakeLists.txt b/arch/nios2/soc/nios2-qemu/CMakeLists.txt
index e69de29bb2d..5ad7fe233df 100644
--- a/arch/nios2/soc/nios2-qemu/CMakeLists.txt
+++ b/arch/nios2/soc/nios2-qemu/CMakeLists.txt
@@ -0,0 +1 @@
+# intentionally left empty
diff --git a/arch/nios2/soc/nios2f-zephyr/CMakeLists.txt b/arch/nios2/soc/nios2f-zephyr/CMakeLists.txt
index e69de29bb2d..5ad7fe233df 100644
--- a/arch/nios2/soc/nios2f-zephyr/CMakeLists.txt
+++ b/arch/nios2/soc/nios2f-zephyr/CMakeLists.txt
@@ -0,0 +1 @@
+# intentionally left empty
diff --git a/arch/xtensa/soc/sample_controller/CMakeLists.txt b/arch/xtensa/soc/sample_controller/CMakeLists.txt
index e69de29bb2d..5ad7fe233df 100644
--- a/arch/xtensa/soc/sample_controller/CMakeLists.txt
+++ b/arch/xtensa/soc/sample_controller/CMakeLists.txt
@@ -0,0 +1 @@
+# intentionally left empty
diff --git a/lib/libc/minimal/source/CMakeLists.txt b/lib/libc/minimal/source/CMakeLists.txt
deleted file mode 100644
index 2089a727f87..00000000000
--- a/lib/libc/minimal/source/CMakeLists.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-add_subdirectory(stdout)
-add_subdirectory(string)
-add_subdirectory(stdlib)
diff --git a/lib/libc/minimal/source/stdout/CMakeLists.txt b/lib/libc/minimal/source/stdout/CMakeLists.txt
deleted file mode 100644
index e69de29bb2d..00000000000