diff --git a/CMakeLists.txt b/CMakeLists.txt
index 474affc..b453e1b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,6 +10,10 @@ project(
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
 
+if (CMAKE_CROSSCOMPILING AND (CMAKE_SYSTEM_NAME EQUAL "Linux"))
+  set(CMAKE_SYSTEM_VERSION ${CMAKE_HOST_SYSTEM_VERSION})
+endif()
+
 option(CFLTK_BUILD_SHARED "Builds a shared library" OFF)
 option(USE_SYSTEM_FLTK "Finds and uses the installed FLTK library" OFF)
 option(CFLTK_USE_OPENGL "Uses OpenGL" OFF)