diff --git a/CMakeModules/UseCompat.cmake b/CMakeModules/UseCompat.cmake
index d81f28c..ac330e5 100644
--- a/CMakeModules/UseCompat.cmake
+++ b/CMakeModules/UseCompat.cmake
@@ -53,6 +53,7 @@
 
     check_symbol_exists(realpath "stdlib.h" HAVE_REALPATH)
     check_symbol_exists(localtime_r "time.h" HAVE_LOCALTIME_R)
+    check_symbol_exists(strptime "time.h" HAVE_STRPTIME)
 
     unset(CMAKE_REQUIRED_DEFINITIONS)
     unset(CMAKE_REQUIRED_LIBRARIES)
@@ -64,4 +65,7 @@
     if(WIN32)
         include_directories(${PROJECT_SOURCE_DIR}/compat/posix-shims)
     endif()
+    if(NOT HAVE_STRPTIME)
+        set(compatsrc ${compatsrc} ${PROJECT_SOURCE_DIR}/compat/strptime.c)
+    endif()
 endmacro()