Fix cmake failure

Author: vinay-deshmukh

libc/CMakeLists.txt

@@ -34,7 +34,7 @@ if (CMAKE_BUILD_TYPE STREQUAL "Debug")
   add_definitions("-D_DEBUG")
 endif()
 
-# add_compile_options("-Werror=global-constructors")
+add_compile_options("-Werror=global-constructors")
 
 # Default to C++17
 set(CMAKE_CXX_STANDARD 17)