diff --git a/3party/fmt/CMakeLists.txt b/3party/fmt/CMakeLists.txt
index d99babd..887f7bd 100644
--- a/3party/fmt/CMakeLists.txt
+++ b/3party/fmt/CMakeLists.txt
@@ -93,6 +93,7 @@ if (WIN32)
 else ()
   check_symbol_exists(open fcntl.h HAVE_OPEN)
 endif ()
+check_symbol_exists(strtod_l stdlib.h HAVE_STRTOD_L)
 
 add_subdirectory(fmt)
 
diff --git a/3party/fmt/fmt/posix.h b/3party/fmt/fmt/posix.h
index 88512de..f829799 100644
--- a/3party/fmt/fmt/posix.h
+++ b/3party/fmt/fmt/posix.h
@@ -327,6 +327,10 @@ class Locale {
   static double strtod_l(const char *nptr, char **endptr, _locale_t locale) {
     return _strtod_l(nptr, endptr, locale);
   }
+# elif !defined(HAVE_STRTOD_L)
+     static double strtod_l(const char *nptr, char **endptr, locale_t) {
+        return atof(nptr);
+     }
 # endif
 
   locale_t locale_;