git add cmake

Author: nickdesaulniers

libc/src/poll/CMakeLists.txt

@@ -0,0 +1,10 @@
+if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${LIBC_TARGET_OS})
+  add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/${LIBC_TARGET_OS})
+endif()
+
+add_entrypoint_object(
+  poll
+  ALIAS
+  DEPENDS
+    .${LIBC_TARGET_OS}.poll
+)