diff --git a/libc/cmake/modules/LLVMLibCLibraryRules.cmake b/libc/cmake/modules/LLVMLibCLibraryRules.cmake
--- a/libc/cmake/modules/LLVMLibCLibraryRules.cmake
+++ b/libc/cmake/modules/LLVMLibCLibraryRules.cmake
@@ -207,7 +207,8 @@
     return()
   endif()
 
-  list(POP_FRONT flags flag)
+  list(GET flags 0 flag)
+  list(REMOVE_AT flags 0)
   extract_flag_modifier(${flag} real_flag modifier)
 
   if(NOT "${modifier}" STREQUAL "NO")
diff --git a/libc/cmake/modules/LLVMLibCObjectRules.cmake b/libc/cmake/modules/LLVMLibCObjectRules.cmake
--- a/libc/cmake/modules/LLVMLibCObjectRules.cmake
+++ b/libc/cmake/modules/LLVMLibCObjectRules.cmake
@@ -126,7 +126,8 @@
     return()
   endif()
 
-  list(POP_FRONT flags flag)
+  list(GET flags 0 flag)
+  list(REMOVE_AT flags 0)
   extract_flag_modifier(${flag} real_flag modifier)
 
   if(NOT "${modifier}" STREQUAL "NO")
@@ -441,7 +442,8 @@
     return()
   endif()
 
-  list(POP_FRONT flags flag)
+  list(GET flags 0 flag)
+  list(REMOVE_AT flags 0)
   extract_flag_modifier(${flag} real_flag modifier)
 
   if(NOT "${modifier}" STREQUAL "NO")
diff --git a/libc/cmake/modules/LLVMLibCTestRules.cmake b/libc/cmake/modules/LLVMLibCTestRules.cmake
--- a/libc/cmake/modules/LLVMLibCTestRules.cmake
+++ b/libc/cmake/modules/LLVMLibCTestRules.cmake
@@ -212,7 +212,8 @@
     return()
   endif()
 
-  list(POP_FRONT flags flag)
+  list(GET flags 0 flag)
+  list(REMOVE_AT flags 0)
   extract_flag_modifier(${flag} real_flag modifier)
 
   if(NOT "${modifier}" STREQUAL "NO")