Index: include/locale
===================================================================
--- include/locale
+++ include/locale
@@ -736,7 +736,11 @@
         typename remove_reference<decltype(errno)>::type __save_errno = errno;
         errno = 0;
         char *__p2;
+#if defined(__ANDROID_API__) && __ANDROID_API__ < 21
+        long long __ll = strtoll(__a, &__p2, __base);
+#else
         long long __ll = strtoll_l(__a, &__p2, __base, _LIBCPP_GET_C_LOCALE);
+#endif
         typename remove_reference<decltype(errno)>::type __current_errno = errno;
         if (__current_errno == 0)
             errno = __save_errno;
@@ -776,7 +780,11 @@
         typename remove_reference<decltype(errno)>::type __save_errno = errno;
         errno = 0;
         char *__p2;
+#if defined(__ANDROID_API__) && __ANDROID_API__ < 21
+        unsigned long long __ll = strtoull(__a, &__p2, __base);
+#else
         unsigned long long __ll = strtoull_l(__a, &__p2, __base, _LIBCPP_GET_C_LOCALE);
+#endif
         typename remove_reference<decltype(errno)>::type __current_errno = errno;
         if (__current_errno == 0)
             errno = __save_errno;
@@ -805,19 +813,31 @@
 template <>
 inline _LIBCPP_INLINE_VISIBILITY
 float __do_strtod<float>(const char* __a, char** __p2) {
+#if defined(__ANDROID_API__) && __ANDROID_API__ < 26
+    return strtof(__a, __p2);
+#else
     return strtof_l(__a, __p2, _LIBCPP_GET_C_LOCALE);
+#endif
 }
 
 template <>
 inline _LIBCPP_INLINE_VISIBILITY
 double __do_strtod<double>(const char* __a, char** __p2) {
+#if defined(__ANDROID_API__) && __ANDROID_API__ < 26
+    return strtod(__a, __p2);
+#else
     return strtod_l(__a, __p2, _LIBCPP_GET_C_LOCALE);
+#endif
 }
 
 template <>
 inline _LIBCPP_INLINE_VISIBILITY
 long double __do_strtod<long double>(const char* __a, char** __p2) {
+#if defined(__ANDROID_API__) && __ANDROID_API__ < 26
+    return strtold(__a, __p2);
+#else
     return strtold_l(__a, __p2, _LIBCPP_GET_C_LOCALE);
+#endif
 }
 
 template <class _Tp>