diff --git a/libc/src/pthread/CMakeLists.txt b/libc/src/pthread/CMakeLists.txt
--- a/libc/src/pthread/CMakeLists.txt
+++ b/libc/src/pthread/CMakeLists.txt
@@ -253,6 +253,9 @@
     libc.include.errno
     libc.include.pthread
     libc.src.__support.threads.thread
+  COMPILE_OPTIONS
+    -O3
+    -fno-omit-frame-pointer
 )
 
 add_entrypoint_object(