Add LLVM_USE_PERF option to account for the same flag in target llvm

.ci.yml

@@ -15,7 +15,7 @@ steps:
   image: rg.fr-par.scw.cloud/serene/llvm:15-8
   commands:
     - cmake --version
-    - ./builder build
+    - ./builder build -DLLVM_USE_PERF=ON
     - ln -s build/compile_commands.json ./compile_commands.json
 
 - name: Linters

CMakeLists.txt

@@ -279,10 +279,13 @@ if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
   # endforeach(arch)
 
 
+  option(LLVM_USE_PERF "If the target LLVM build is built with LLVM_USE_PERF" OFF)
   set(CONDITIONAL_COMPONENTS "")
+
   if(LLVM_USE_PERF)
     list(APPEND CONDITIONAL_COMPONENTS PerfJITEvents)
   endif()
+
   llvm_map_components_to_libnames(llvm_libs
     core
     support