How to specify c header file in android.mk file -

i had c source folder name "clib" , in , have example files 1.h ,1.c , 2.h ,2.c,3.c,3.h , out side folder have 4.h , 4.c , 4_jni.h , 4_jni.c

now build ".so" created android.mk this

local_path := $(call my-dir)  my_path := $(local_path)  include $(call all-subdir-makefiles)  include $(clear_vars)  local_path := $(my_path)  local_ldlibs := -l$(sysroot)/usr/lib -llog local_module := clib time_sync_path := ../../../clib local_src_files := \                      4_jni.c \                     4.c     \                     $(time_sync_path)/1.c \                     $(time_sync_path)/2.c \                     $(time_sync_path)/3.c \ $(build_shared_library) 

here 4.h includes 1.h file

so real problem when tried build .so file gives me error this

fatal error: 1.h: no such file or directory

if remove 1.h 4.h , building fine , had large c library same kind of folder structure , , of .h file contains few marcos defined ....

so please suggestion how include .h in different folder..

you need specify local_c_includes location.

this variable holds locations of header files :

local_c_includes := $(local_path)/src/include/ 

you can of course specify multiple locations :

local_c_includes := $(local_path)/src/include/ local_c_includes += $(local_path)/project2/src/include/ 

note when variable evaluated ndk-build utility, value considered relative $(local_path), need use $(local_path) when giving path in local_c_includes.