🐛 Disable LTO for Windows builds (#1182)

CMake/mingwcc.cmake

@@ -17,6 +17,3 @@ SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
 
 SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
 SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
-if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 9.3)
-  SET(DISABLE_LTO ON)
-endif()

CMake/mingwcc64.cmake

@@ -18,4 +18,3 @@ SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
 SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
 SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
 SET(SYSTEM_BITS x64)
-SET(DISABLE_LTO ON)

CMakeLists.txt

@@ -58,6 +58,12 @@ else()
     LANGUAGES C CXX)
 endif()
 
+if(WIN32 AND NOT CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
+  if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 9.3 OR SYSTEM_BITS MATCHES x64)
+    SET(DISABLE_LTO ON)
+  endif()
+endif()
+
 # Not a genexp because CMake doesn't support it
 # https://gitlab.kitware.com/cmake/cmake/-/issues/20546
 if(NOT DISABLE_LTO)