build: add memalignment to CMakeLists.txt

Author: hulxv

libc/src/stdlib/CMakeLists.txt

@@ -385,6 +385,11 @@ if(NOT LIBC_TARGET_OS_IS_BAREMETAL AND NOT LIBC_TARGET_OS_IS_GPU)
       DEPENDS
         ${SCUDO_DEPS}
     )
+    add_entrypoint_external(
+      memalignment
+      DEPENDS
+        ${SCUDO_DEPS}
+    )
     add_entrypoint_external(
       calloc
       DEPENDS
@@ -414,6 +419,9 @@ if(NOT LIBC_TARGET_OS_IS_BAREMETAL AND NOT LIBC_TARGET_OS_IS_GPU)
     add_entrypoint_external(
       malloc
     )
+    add_entrypoint_external(
+      memalignment
+    )
     add_entrypoint_external(
       calloc
     )
@@ -524,6 +532,12 @@ if(LIBC_TARGET_OS_IS_BAREMETAL OR LIBC_TARGET_OS_IS_GPU)
     DEPENDS
       .${LIBC_TARGET_OS}.malloc
   )
+  add_entrypoint_object(
+    memalignment
+    ALIAS
+    DEPENDS
+      .${LIBC_TARGET_OS}.memalignment
+  )
   add_entrypoint_object(
     free
     ALIAS