Trigger CI

CMakeLists.txt

@@ -239,12 +239,16 @@ if (COMPILER_CLANG)
     if (LLVM_AR_PATH)
         message(STATUS "Using llvm-ar: ${LLVM_AR_PATH}.")
         set (CMAKE_AR ${LLVM_AR_PATH})
+    else ()
+        message(WARNING "Cannot find llvm-ar. System ar will be used instead. It does not work with ThinLTO.")
     endif ()
 
     find_program (LLVM_RANLIB_PATH NAMES "llvm-ranlib" "llvm-ranlib-10" "llvm-ranlib-9" "llvm-ranlib-8")
     if (LLVM_RANLIB_PATH)
         message(STATUS "Using llvm-ranlib: ${LLVM_RANLIB_PATH}.")
         set (CMAKE_RANLIB ${LLVM_RANLIB_PATH})
+    else ()
+        message(WARNING "Cannot find llvm-ranlib. System ranlib will be used instead. It does not work with ThinLTO.")
     endif ()
 endif ()