diff --git a/CMakeLists.txt b/CMakeLists.txt
index d9b6d62f..caba7d80 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,13 +4,14 @@ include("cmake/mimalloc-config-version.cmake")
 set(CMAKE_C_STANDARD 11)
 set(CMAKE_CXX_STANDARD 17)
 
-option(MI_OVERRIDE    "Override the standard malloc interface" ON)
-option(MI_INTERPOSE   "Use interpose to override standard malloc on macOS" ON)
-option(MI_SEE_ASM     "Generate assembly files" OFF)
-option(MI_CHECK_FULL  "Use full internal invariant checking in DEBUG mode" OFF)
-option(MI_USE_CXX     "Use the C++ compiler to compile the library" OFF)
-option(MI_SECURE      "Use security mitigations (like guard pages and randomization)" OFF)
-option(MI_BUILD_TESTS "Build test executables" ON)
+option(MI_OVERRIDE          "Override the standard malloc interface" ON)
+option(MI_INTERPOSE         "Use interpose to override standard malloc on macOS" ON)
+option(MI_SEE_ASM           "Generate assembly files" OFF)
+option(MI_CHECK_FULL        "Use full internal invariant checking in DEBUG mode" OFF)
+option(MI_USE_CXX           "Use the C++ compiler to compile the library" OFF)
+option(MI_SECURE            "Use security mitigations (like guard pages and randomization)" OFF)
+option(MI_LOCAL_DYNAMIC_TLS "Use slightly slower, dlopen-compatible TLS mechanism (Unix)" OFF)
+option(MI_BUILD_TESTS       "Build test executables" ON)
 
 set(mi_install_dir "lib/mimalloc-${mi_version}")
 
@@ -88,7 +89,12 @@ endif()
 
 # Compiler flags
 if(CMAKE_C_COMPILER_ID MATCHES "AppleClang|Clang|GNU")
-  list(APPEND mi_cflags -Wall -Wextra -Wno-unknown-pragmas -ftls-model=initial-exec)
+  list(APPEND mi_cflags -Wall -Wextra -Wno-unknown-pragmas)
+  if(MI_LOCAL_DYNAMIC_TLS MATCHES "ON")
+    list(APPEND mi_cflags -ftls-model=local-dynamic)
+  else()
+    list(APPEND mi_cflags -ftls-model=initial-exec)
+  endif()
   if(CMAKE_C_COMPILER_ID MATCHES "GNU")
     list(APPEND mi_cflags -Wno-invalid-memory-model)
     list(APPEND mi_cflags -fvisibility=hidden)