more clever way to exclude libm if needed

check GGML_SYCL and ONEAPI_ROOT state rather than generator name.

Author: MakeDecisionWorth

ggml/src/CMakeLists.txt

@@ -1400,7 +1400,7 @@ list(APPEND GGML_EXTRA_LIBS_PRIVATE Threads::Threads)
 
 find_library(MATH_LIBRARY m)
 if (MATH_LIBRARY)
-    if ((NOT WIN32 OR NOT GGML_SYCL) AND NOT CMAKE_GENERATOR MATCHES "Visual Studio*")
+    if (NOT WIN32 OR NOT (GGML_SYCL OR DEFINED ENV{ONEAPI_ROOT}))
         list(APPEND GGML_EXTRA_LIBS_PRIVATE m)
     endif()
 endif()