Android NDK, error: undefined reference to function of .h file -

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this android.mk file when compile error error while creating

my android.mk file

local_path := $(call my-dir) include $(clear_vars) local_module := libndk local_cflags := -dandroid_ndk \                 -ddisable_importgl local_src_files := serialport.c  local_cflags := -std=c99 local_ldlibs := -lglesv1_cm -ldl -llog include $(build_shared_library)


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