fix compatibility with CMake 3.16

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f59f75620ad47a1260214a481c1204a5f1c23ce0..02a879cebd2192716d82183d5b0a5bba56a51315 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -204,10 +204,15 @@ IF(GLSLC AND XXD)
 
        ADD_CUSTOM_TARGET(BuildShaders ALL DEPENDS ${SHADER_OUTPUTS})
 
-       ADD_CUSTOM_TARGET(ClearShadersHeader
-               COMMAND ${CMAKE_COMMAND} -E rm -f ${SHADERS_H}
-
-       )
+       if (${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.17.0")
+               ADD_CUSTOM_TARGET(ClearShadersHeader
+                       COMMAND ${CMAKE_COMMAND} -E rm -f ${SHADERS_H}
+               )
+       else()
+               ADD_CUSTOM_TARGET(ClearShadersHeader
+                       COMMAND ${CMAKE_COMMAND} -E remove -f ${SHADERS_H}
+               )
+       endif()
        ADD_CUSTOM_TARGET(BuildShadersHeader
                DEPENDS ClearShadersHeader ${SHADER_OUTPUTS}
        )