How to remove undefined symbols from a .o file - c

Question

I have to build a shared library using another static library. In that static library there are some function calls that are undefined in nm output. I want to remove those symbols, by getting the object file. I cannot delete whole object file, as some part of it is used. Is there any way of doing that.
nm output
request.o:
U CLR_SECURE_MEM_START_ADDR //want to remove
U clrSMEMAlloc //want to remove
U clrSMEMCopy //want to remove
U clrSMEMFree //want to remove
U clrSMEMSet //want to remove
00000000 T copyBuffer
00000000 T copyParameter
00000000 T copyRequest
00000000 T freeParameter
00000000 T freeRequest
00000000 T getLinkFromRequest
U _gp_disp
00000000 T initializeRequest
00000000 T initializeRequestQueue
U isClrSMEMBuffer
00000000 T isParamInSharedMem
00000000 T isRequestInSharedMem
00000004 b RequestQueue
00000000 b RequestQueueHead
U strlen
00000000 T verifyParameter ////want to keep
00000000 T verifyParameterType
00000000 T verifyParameterTypes
00000000 T verifyRequestParameters
I don't have the source of this object file, so I don't know the prototype of the functions that I want to remove. If I had the source I could have written dummy definitions.
P.S
The library that I had was broken. Thats why I had undefined references.

Answer 1

According to Michael Walz's comment, I didn't needed to strip the .o file. I just had to create a file depend.c. Put a definition for those functions which were undefined. Then build it
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := libdepend
LOCAL_SRC_FILES := src/depend.cpp
LOCAL_CFLAGS := -DCLR_INTERAPTIV_I7 -DCLR_INTERAPTIV -v
LOCAL_C_INCLUDES := $(LOCAL_PATH)/../../RIP/include/ $(LOCAL_PATH)/../../../hardware/libhardware/include/hardware $(LOCAL_PATH)/../../../hardware/libhardware/include $(LOCAL_PATH)/src $(LOCAL_PATH)/../../RIP/inc
LOCAL_SHARED_LIBRARIES = libsmem.sastra
LOCAL_LDFLAGS := -v -L$(ANDROID_PRODUCT_OUT)/system/lib -lsmem.$(TARGET_BOARD_PLATFORM) -L$(LOCAL_PATH)/../../RIP/library -llibrary -llog -lcutils -lipc.$(TARGET_BOARD_PLATFORM)
#this option will build executables instead of building library for android application.
include $(BUILD_EXECUTABLE)
Take the .o of this file from out folder.
Get all .os from the library.
now
ar -x library.a //get original object files
pack all .os in this library with depend.o by this command
ar r library.a *.o //put depend.o with other object files
Now build the shared library
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := libRip
LOCAL_SRC_FILES := src/Rip_api.cpp src/Rip_crypto.cpp
LOCAL_CFLAGS := -DCLR_INTERAPTIV_I7 -DCLR_INTERAPTIV -v
#only include corelockr and rip headers
LOCAL_C_INCLUDES := $(LOCAL_PATH)/inc/ $(LOCAL_PATH)/include/ $(LOCAL_PATH)/../../hardware/libhardware/include/hardware/
LOCAL_LDLIBS := -llog -L$(LOCAL_PATH)/library -llibrary
LOCAL_SHARED_LIBRARIES = libsmem.sastra
#test seqr library
#LOCAL_LDFLAGS := -v -L$(LOCAL_PATH)/library -llibrary
#this option will build static library
include $(BUILD_SHARED_LIBRARY)
Now shared library should build without any issues.
*******Its a workaround, not a real solution.*******