diff --git a/libc/config/linux/CMakeLists.txt b/libc/config/linux/CMakeLists.txt
index 6fdfb8cc555c39..c8f496bf3f07fc 100644
--- a/libc/config/linux/CMakeLists.txt
+++ b/libc/config/linux/CMakeLists.txt
@@ -9,5 +9,3 @@ add_gen_header(
   DEPENDS
     libc.src.__support.common
 )
-
-add_subdirectory(x86_64)
diff --git a/libc/config/linux/x86_64/CMakeLists.txt b/libc/config/linux/x86_64/CMakeLists.txt
deleted file mode 100644
index e69de29bb2d1d6..00000000000000
diff --git a/libc/src/string/CMakeLists.txt b/libc/src/string/CMakeLists.txt
index 634e5f900e9417..114fce7d626d84 100644
--- a/libc/src/string/CMakeLists.txt
+++ b/libc/src/string/CMakeLists.txt
@@ -132,4 +132,6 @@ add_bzero(bzero MARCH native)
 # Add all other relevant implementations for the native target.
 # ------------------------------------------------------------------------------
 
-include(${LIBC_STRING_TARGET_ARCH}/CMakeLists.txt)
+if(EXISTS ${LIBC_STRING_TARGET_ARCH})
+  include(${LIBC_STRING_TARGET_ARCH}/CMakeLists.txt)
+endif()
diff --git a/libc/test/config/linux/CMakeLists.txt b/libc/test/config/linux/CMakeLists.txt
index 7dc887c8c2aa0b..caff2ef86e247e 100644
--- a/libc/test/config/linux/CMakeLists.txt
+++ b/libc/test/config/linux/CMakeLists.txt
@@ -1,3 +1,5 @@
 add_libc_testsuite(libc_linux_tests)
 
-add_subdirectory(${LIBC_TARGET_MACHINE})
+if(EXISTS ${LIBC_TARGET_MACHINE})
+  add_subdirectory(${LIBC_TARGET_MACHINE})
+endif()