环信libEaseMobClientSDK.a(ioapi.o)与liblibPDRCore.a(ioapi.o)冲突

请问怎么解决
duplicate symbol _fopen_file_func in:

    /Users/xiaosong/Desktop/SVN_RMS-hx/HBuilder-Hello/rmsi/EaseMobSDK/lib/libEaseMobClientSDK.a(ioapi.o)

    /Users/xiaosong/Desktop/SVN_RMS-hx/SDK/Libs/Release-iphonesimulator/liblibPDRCore.a(ioapi.o)

duplicate symbol _fread_file_func in:

    /Users/xiaosong/Desktop/SVN_RMS-hx/HBuilder-Hello/rmsi/EaseMobSDK/lib/libEaseMobClientSDK.a(ioapi.o)

    /Users/xiaosong/Desktop/SVN_RMS-hx/SDK/Libs/Release-iphonesimulator/liblibPDRCore.a(ioapi.o)

duplicate symbol _fwrite_file_func in:

    /Users/xiaosong/Desktop/SVN_RMS-hx/HBuilder-Hello/rmsi/EaseMobSDK/lib/libEaseMobClientSDK.a(ioapi.o)

    /Users/xiaosong/Desktop/SVN_RMS-hx/SDK/Libs/Release-iphonesimulator/liblibPDRCore.a(ioapi.o)

duplicate symbol _ftell_file_func in:

    /Users/xiaosong/Desktop/SVN_RMS-hx/HBuilder-Hello/rmsi/EaseMobSDK/lib/libEaseMobClientSDK.a(ioapi.o)

    /Users/xiaosong/Desktop/SVN_RMS-hx/SDK/Libs/Release-iphonesimulator/liblibPDRCore.a(ioapi.o)

duplicate symbol _fseek_file_func in:

    /Users/xiaosong/Desktop/SVN_RMS-hx/HBuilder-Hello/rmsi/EaseMobSDK/lib/libEaseMobClientSDK.a(ioapi.o)

    /Users/xiaosong/Desktop/SVN_RMS-hx/SDK/Libs/Release-iphonesimulator/liblibPDRCore.a(ioapi.o)

duplicate symbol _fclose_file_func in:

    /Users/xiaosong/Desktop/SVN_RMS-hx/HBuilder-Hello/rmsi/EaseMobSDK/lib/libEaseMobClientSDK.a(ioapi.o)

    /Users/xiaosong/Desktop/SVN_RMS-hx/SDK/Libs/Release-iphonesimulator/liblibPDRCore.a(ioapi.o)

duplicate symbol _ferror_file_func in:

    /Users/xiaosong/Desktop/SVN_RMS-hx/HBuilder-Hello/rmsi/EaseMobSDK/lib/libEaseMobClientSDK.a(ioapi.o)

    /Users/xiaosong/Desktop/SVN_RMS-hx/SDK/Libs/Release-iphonesimulator/liblibPDRCore.a(ioapi.o)

duplicate symbol _unz_copyright in:

    /Users/xiaosong/Desktop/SVN_RMS-hx/HBuilder-Hello/rmsi/EaseMobSDK/lib/libEaseMobClientSDK.a(unzip.o)

    /Users/xiaosong/Desktop/SVN_RMS-hx/SDK/Libs/Release-iphonesimulator/liblibPDRCore.a(unzip.o)

ld: 8 duplicate symbols for architecture i386

clang: error: linker command failed with exit code 1 (use -v to see invocation)