commit 1f20806466e8a1adff85aa327dfb50665d9a7948
Author:     ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
AuthorDate: Thu Aug 27 17:49:10 2020 +0200
Commit:     ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
CommitDate: Thu Aug 27 17:49:10 2020 +0200

    Remove VERSION_GREATER_EQUAL that requires a more recent CMake version than 3.2.3
    
    Replace it by (NOT VERSION_LESS)

 CMake/options.cmake | 4 ++--
 CMake/setup.cmake   | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git CMake/options.cmake CMake/options.cmake
index e7eac47..d6184fe 100644
--- CMake/options.cmake
+++ CMake/options.cmake
@@ -74,9 +74,9 @@ if ((NOT APPLE OR OPTION_APPLE_X11) AND NOT WIN32)
 endif ((NOT APPLE OR OPTION_APPLE_X11) AND NOT WIN32)
 
 if (OPTION_APPLE_X11)
-  if (${CMAKE_SYSTEM_VERSION} VERSION_GREATER_EQUAL 17.0.0) # a.k.a. macOS version â?¥ 10.13
+  if (NOT(${CMAKE_SYSTEM_VERSION} VERSION_LESS 17.0.0)) # a.k.a. macOS version â?¥ 10.13
     list (APPEND FLTK_CFLAGS "-D_LIBCPP_HAS_THREAD_API_PTHREAD")
-  endif (${CMAKE_SYSTEM_VERSION} VERSION_GREATER_EQUAL 17.0.0)
+  endif (NOT(${CMAKE_SYSTEM_VERSION} VERSION_LESS 17.0.0))
   include_directories (AFTER SYSTEM /opt/X11/include/freetype2)
   if (PATH_TO_XLIBS)
     set (LDFLAGS "-L${PATH_TO_XLIBS} ${LDFLAGS}")
diff --git CMake/setup.cmake CMake/setup.cmake
index db661a5..2be2aac 100644
--- CMake/setup.cmake
+++ CMake/setup.cmake
@@ -78,9 +78,9 @@ if (APPLE)
   if (OPTION_APPLE_X11)
     set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -U__APPLE__")
     set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -U__APPLE__")
-    if (${CMAKE_SYSTEM_VERSION} VERSION_GREATER 16.9.0)
+    if (NOT(${CMAKE_SYSTEM_VERSION} VERSION_LESS 17.0.0)) # a.k.a. macOS version â?¥ 10.13
       set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -D_LIBCPP_HAS_THREAD_API_PTHREAD")
-    endif (${CMAKE_SYSTEM_VERSION} VERSION_GREATER 16.9.0)
+    endif (NOT(${CMAKE_SYSTEM_VERSION} VERSION_LESS 17.0.0))
   elseif (OPTION_APPLE_SDL)
     set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${SDL2_INCLUDE_DIRS} -U__APPLE__")
     set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${SDL2_INCLUDE_DIRS} -U__APPLE__")