diff --git a/cmake/compiler.cmake b/cmake/compiler.cmake
index 4b174c72..1d45aea4 100644
--- a/cmake/compiler.cmake
+++ b/cmake/compiler.cmake
@@ -6,6 +6,7 @@ if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
     if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS CLANGCXX_MINVER)
         message(FATAL_ERROR "A minimum of clang++ ${CLANGCXX_MINVER} is required for C++17 support")
     endif()
+    string (REGEX REPLACE "^([0-9]+)\\.([0-9]+)\\.([0-9]+)$" "\\1" CLANG_MAJOR_VERSION "${CMAKE_CXX_COMPILER_VERSION}")
 endif()
 
 # compiler version checks TODO: test more compilers
diff --git a/cmake/simde.cmake b/cmake/simde.cmake
index 4cd56bad..9240fdc2 100644
--- a/cmake/simde.cmake
+++ b/cmake/simde.cmake
@@ -13,6 +13,10 @@ if (SIMDE_SSE42_H_FOUND)
     if (ARCH_PPC64EL)
         set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-deprecated-altivec-src-compat")
         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-deprecated-altivec-src-compat")
+	if (CLANG_MAJOR_VERSION EQUAL 15)
+            set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-deprecate-lax-vec-conv-all")
+            set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-deprecate-lax-vec-conv-all")
+        endif ()
     endif()
   endif()