compiler_options.cmake: move AUTOCONF_H to root.cmake. [1/1]

PD#SWPL-68240

Problem:
move AUTOCONF_H to root.cmake

Solution:
move AUTOCONF_H to root.cmake

Verify:
ad409_a113l

Signed-off-by: Kelvin Zhang <kelvin.zhang@amlogic.com>
Change-Id: Id3c7fb89e71cfd4b229a442345942fa3ceb1f471
diff --git a/cmake/root.cmake b/cmake/root.cmake
index dd1cc5d..2da55ed 100755
--- a/cmake/root.cmake
+++ b/cmake/root.cmake
@@ -49,6 +49,10 @@
 # Do not prefix the output library file.
 set(CMAKE_STATIC_LIBRARY_PREFIX "")
 
+set(CMAKE_C_FLAGS "-imacros${AUTOCONF_H}")
+set(CMAKE_CXX_FLAGS "-imacros${AUTOCONF_H}")
+set(CMAKE_ASM_FLAGS "-imacros${AUTOCONF_H}")
+
 if(EXISTS ${ARCH_DIR}/compiler_options.cmake)
     include(${ARCH_DIR}/compiler_options.cmake)
 endif()