diff --git a/CMakeLists.txt b/CMakeLists.txt
index 04674124c..12e8b8b00 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -19,7 +19,7 @@ endif()
 
 set(version 1.1.0)
 # Check support for CUDA/HIP in Cmake
-project(composable_kernel VERSION ${version})
+project(composable_kernel VERSION ${version} LANGUAGES CXX HIP)
 
 list(APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake")
 
@@ -173,27 +173,6 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 message("CMAKE_CXX_COMPILER_ID: ${CMAKE_CXX_COMPILER_ID}")
 
-## OpenMP
-if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
-	# workaround issue hipcc in rocm3.5 cannot find openmp
-	set(OpenMP_CXX "${CMAKE_CXX_COMPILER}")
-	set(OpenMP_CXX_FLAGS "-fopenmp=libomp -Wno-unused-command-line-argument")
-	set(OpenMP_CXX_LIB_NAMES "libomp" "libgomp" "libiomp5")
-	set(OpenMP_libomp_LIBRARY ${OpenMP_CXX_LIB_NAMES})
-	set(OpenMP_libgomp_LIBRARY ${OpenMP_CXX_LIB_NAMES})
-	set(OpenMP_libiomp5_LIBRARY ${OpenMP_CXX_LIB_NAMES})
-else()
-	find_package(OpenMP REQUIRED)
-endif()
-
-message("OpenMP_CXX_LIB_NAMES: ${OpenMP_CXX_LIB_NAMES}")
-message("OpenMP_gomp_LIBRARY: ${OpenMP_gomp_LIBRARY}")
-message("OpenMP_pthread_LIBRARY: ${OpenMP_pthread_LIBRARY}")
-message("OpenMP_CXX_FLAGS: ${OpenMP_CXX_FLAGS}")
-
-link_libraries(${OpenMP_gomp_LIBRARY})
-link_libraries(${OpenMP_pthread_LIBRARY})
-
 ## HIP
 find_package(HIP REQUIRED)
 # Override HIP version in config.h, if necessary.
@@ -215,8 +194,6 @@ if( DEFINED CK_OVERRIDE_HIP_VERSION_PATCH )
     message(STATUS "CK_HIP_VERSION_PATCH overriden with ${CK_OVERRIDE_HIP_VERSION_PATCH}")
 endif()
 message(STATUS "Build with HIP ${HIP_VERSION}")
-link_libraries(hip::device)
-add_compile_definitions(__HIP_PLATFORM_HCC__=1)
 
 ## tidy
 include(EnableCompilerWarnings)
@@ -376,7 +353,9 @@ if(BUILD_DEV)
     add_compile_options(-Werror -Weverything)
 endif()
 #add flags to reduce the size of binaries
-add_compile_options(-Oz -flto=thin)
+# -flto requires ORT to use a linker that support LTO and -flto flag shoud be passed to linker together.
+# add_compile_options(-Oz -flto=thin)
+add_compile_options(-Oz)
 message("CMAKE_CXX_FLAGS: ${CMAKE_CXX_FLAGS}")
 
 add_custom_target(check COMMAND ${CMAKE_CTEST_COMMAND} --output-on-failure -C ${CMAKE_CFG_INTDIR})
@@ -482,11 +461,3 @@ rocm_install(FILES
 
 set(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE")
 set(CPACK_RPM_PACKAGE_LICENSE "MIT")
-
-rocm_create_package(
-    NAME composablekernel
-    DESCRIPTION "High Performance Composable Kernel for AMD GPUs"
-    MAINTAINER "MIOpen Kernels Dev Team <dl.MIOpen@amd.com>"
-    LDCONFIG
-    HEADER_ONLY
-)
diff --git a/library/src/tensor_operation_instance/gpu/CMakeLists.txt b/library/src/tensor_operation_instance/gpu/CMakeLists.txt
index 9cb5d0e9a..141a46f3d 100644
--- a/library/src/tensor_operation_instance/gpu/CMakeLists.txt
+++ b/library/src/tensor_operation_instance/gpu/CMakeLists.txt
@@ -44,8 +44,14 @@ function(add_instance_library INSTANCE_NAME)
     endforeach()
     #only continue if there are some source files left on the list
     if(ARGN)
+        set_source_files_properties(${ARGN} PROPERTIES LANGUAGE HIP)
         add_library(${INSTANCE_NAME} OBJECT ${ARGN})
+        # Always disable debug symbol and C debug assert due to
+        # - Linker error: ... relocation truncated to fit ..., caused by object files to be linked are too huge.
+        # - https://github.com/ROCmSoftwarePlatform/composable_kernel/issues/622
+        target_compile_options(${INSTANCE_NAME} PRIVATE -g0 -DNDEBUG)
         target_compile_features(${INSTANCE_NAME} PUBLIC)
+        target_compile_definitions(${INSTANCE_NAME} PRIVATE "__HIP_PLATFORM_AMD__=1" "__HIP_PLATFORM_HCC__=1")
         set_target_properties(${INSTANCE_NAME} PROPERTIES POSITION_INDEPENDENT_CODE ON)
         clang_tidy_check(${INSTANCE_NAME})
         set(result 0)