diff --git a/CMakeLists.txt b/CMakeLists.txt
index 70f35f5a2..c3aaacce7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -114,6 +114,9 @@ elseif(UNIX)
 	set(INSTALL_RTM_CMAKE_DIR ${CMAKE_INSTALL_LIBDIR}/openrtm-${RTM_MAJOR_VERSION}.${RTM_MINOR_VERSION}/cmake)
 	set(INSTALL_RTM_ETC_DIR ${CMAKE_INSTALL_SYSCONFDIR})
 	set(INSTALL_RTM_SHARE_DIR ${CMAKE_INSTALL_DATAROOTDIR})
+	if(${CMAKE_CXX_COMPILER_VERSION} VERSION_GREATER_EQUAL 12.0.0)
+		set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-aggressive-loop-optimizations --param max-inline-insns-single=1000 --param inline-unit-growth=1000")
+	endif()
 else()
 	set(INSTALL_RTM_SCRIPT_DIR lib/openrtm-${RTM_MAJOR_VERSION}.${RTM_MINOR_VERSION}/py_helper)
 	set(INSTALL_RTM_BIN_DIR bin)
@@ -685,7 +688,7 @@ function(openrtm_common_set_compile_options target)
 		-Wstrict-null-sentinel
 		-Wstrict-overflow=5
 		$<$<VERSION_GREATER:${CMAKE_CXX_COMPILER_VERSION},6.9.9>: -Wstringop-overflow=4>
-		$<$<VERSION_GREATER:${CMAKE_CXX_COMPILER_VERSION},11.9.9>: -Wsuggest-attribute=cold>
+		$<$<VERSION_GREATER:${CMAKE_CXX_COMPILER_VERSION},12.9.9>: -Wsuggest-attribute=cold>
 		-Wsuggest-attribute=format
 		$<$<VERSION_GREATER:${CMAKE_CXX_COMPILER_VERSION},7.9.9>: -Wsuggest-attribute=malloc>
 		$<$<VERSION_GREATER:${CMAKE_CXX_COMPILER_VERSION},4.9.9>: -Wsuggest-override>