fix: Cmake IR compilation

CMakeLists.txt

@@ -7,6 +7,7 @@ project(CarrotCompiler  VERSION 0.1
 # Common build options
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O0")
+# set(BUILD_IR_TESTING true)
 
 # Generic includes
 set(INCLUDE_DIRECTORIES "${PROJECT_SOURCE_DIR}/include")

runtime/CMakeLists.txt

@@ -14,7 +14,7 @@ set(SOURCE_FILES "${PROJECT_SOURCE_DIR}/src/sylib.c")
 
 if(BUILD_IR_TESTING)
   add_custom_target(sysy-ir ALL
-    COMMAND ${CMAKE_C_COMPILER} ${CMAKE_C_FLAGS}
+    COMMAND clang ${CMAKE_C_FLAGS}
     -I ${INCLUDE_DIRECTORY}
     -S -emit-llvm
     ${SOURCE_FILES}

test/CMakeLists.txt

@@ -8,6 +8,9 @@ set(PERFORMANCE_TESTS_DIR
 set(FINAL_PERFORMANCE_TESTS_DIR
   "${CMAKE_CURRENT_SOURCE_DIR}/case/final_performance")
 
+# set(BUILD_PERFORMANCE_TESTS true)
+# set(BUILD_IR_TESTING true)
+
 # Define test function
 function(add_test_dir testdir)
   file(GLOB files "${testdir}/*.sy")