Using try_run to get __MAC_OS_X_VERSION_MAX_ALLOWED

MatthiasWM · Nov 4, 2024 · e50f286 · e50f286
1 parent f90887e
commit e50f286
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Showing 3 changed files with 22 additions and 1 deletion.
diff --git a/CMake/macosMaxAllowd.c b/CMake/macosMaxAllowd.c
@@ -0,0 +1,8 @@
+#include <AvailabilityMacros.h>
+#include <stdio.h>
+
+int main(int argc, char **argv) {
+  unsigned int ver = __MAC_OS_X_VERSION_MAX_ALLOWED;
+  printf("%d.%d.%d", ver/10000, (ver/100)%100, ver%100);
+  return 0;
+}
diff --git a/CMake/setup.cmake b/CMake/setup.cmake
@@ -117,6 +117,17 @@ if(APPLE)
   set(HAVE_VSNPRINTF 1)
   set(HAVE_SCANDIR 1)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-deprecated")
+  try_run(
+    RUN_RESULT COMPILE_RESULT
+    SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/CMake/macosMaxAllowd.c
+    RUN_OUTPUT_VARIABLE MAC_OS_X_VERSION_MAX_ALLOWED
+  )
+  if (COMPILE_RESULT STREQUAL "FALSE")
+    set(MAC_OS_X_VERSION_MAX_ALLOWED ${CURRENT_OSX_VERSION})
+  endif()
+  # message("MAC_OS_X_VERSION_MAX_ALLOWED: ${MAC_OS_X_VERSION_MAX_ALLOWED}")
+  # message("COMPILE_RESULT: ${COMPILE_RESULT}")
+  # message("RUN_RESULT: ${RUN_RESULT}")
   if(FLTK_BACKEND_X11)
     if(NOT(${CMAKE_SYSTEM_VERSION} VERSION_LESS 17.0.0)) # a.k.a. macOS version ≥ 10.13
       set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -D_LIBCPP_HAS_THREAD_API_PTHREAD")
@@ -127,7 +138,7 @@ if(APPLE)
       if(${CMAKE_SYSTEM_VERSION} VERSION_GREATER_EQUAL 20.0) # a.k.a. macOS version ≥ 11.0
         list(APPEND FLTK_COCOA_FRAMEWORKS "-weak_framework UniformTypeIdentifiers")
       endif()
-      if(${CMAKE_SYSTEM_VERSION} VERSION_GREATER_EQUAL 24.0) # a.k.a. macOS version ≥ 15.0
+      if(${MAC_OS_X_VERSION_MAX_ALLOWED} VERSION_GREATER_EQUAL 15.0)
         list(APPEND FLTK_COCOA_FRAMEWORKS "-weak_framework ScreenCaptureKit")
       endif()
     endif()

diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -345,3 +345,5 @@ if(0) # debug built library and fluid targets
   endforeach()
   message(STATUS "---------------------------------------------------------")
 endif()
+
+
Original file line number	Diff line number	Diff line change
Expand Up		@@ -345,3 +345,5 @@ if(0) # debug built library and fluid targets
		endforeach()
		message(STATUS "---------------------------------------------------------")
		endif()