Modify the dll file name

Since the lib file contains dll file information, the lib name is modified directly. When the linker performs linking, the content in the lib file does not change. The result is that the program still looks for the dll named after the original name when the program is running. file. So we directly modify the corresponding lib file and dll file name will cause the program can not find the dll file

Operating environment: wind10 + vs2015 + x64
Modification method: (Taking tensorflow_cc.dll to tensorflow.dll as an example)

• First export the contents of the dll through the dumpbin tool
  DUMPBIN /path/tensorflow_cc.dll /EXPORTS /OUT:/path/tensorflow.def
• Open tensorflow.def through a text editor, the content is as follows.

Dump of file D:\Project\SciDnnDll\DependencyDll\tensorflow_cc.dll

File Type: DLL

Section contains the following exports for tensorflow_cc.dll

    00000000 characteristics
    5DE87B88 time date stamp Thu Dec  5 11:37:44 2019
        0.00 version
        1 ordinal base
        3131 number of functions
        3131 number of names

    ordinal hint RVA      name

        1    0 0304C6A0 ??$CreateMaybeMessage@VGPUOptions@tensorflow@@$$V@Arena@protobuf@google@@CAPEAVGPUOptions@tensorflow@@PEAV012@@Z
        2    1 0307F3F0 ??$CreateMaybeMessage@VNodeDef@tensorflow@@$$V@Arena@protobuf@google@@CAPEAVNodeDef@tensorflow@@PEAV012@@Z
        3    2 023EFF40 ??0?$MaybeStackArray@D$0CI@@icu_62@@AEAA@AEBV01@@Z
        .
        .
        .
        3130  C39 028FA770 utrie_unserializeDummy_62
        3131  C3A 028FA900 utrie_unserialize_62

Summary

    36A000 .data
        1000 .gfids
    1F8000 .pdata
    1047000 .rdata
    65000 .reloc
    32E0000 .text
        1000 .tls
    11000 _RDATA

• Organize the files and get the following content (operating with python is simpler).

EXPORTS

??$CreateMaybeMessage@VGPUOptions@tensorflow@@$$V@Arena@protobuf@google@@CAPEAVGPUOptions@tensorflow@@PEAV012@@Z        @1
??$CreateMaybeMessage@VNodeDef@tensorflow@@$$V@Arena@protobuf@google@@CAPEAVNodeDef@tensorflow@@PEAV012@@Z              @2
??0?$MaybeStackArray@D$0CI@@icu_62@@AEAA@AEBV01@@Z          @3
.
.
.
utrie_unserializeDummy_62                       @3130
utrie_unserialize_62                            @3131

• Use the vs tool lib to regenerate the renamed lib file (my machine is 64-bit)
  LIB /DEF:/path/tensorflow.def /machine:X64 /OUT:/path/tensorflow.lib
• After obtaining tensorflow.lib, then rename tensorflow_cc.dll to tensorflow.dll to complete the modification of the dll name.

Problems encountered during: LIBARY and other statements in the def file cannot be recognized by the LIB file (According to my guess, it may be due to different versions and references)

Reference materials:
https://blog.csdn.net/WL2002200/article/details/51418372/
http://suddymail.org/show-160-1.html
https://blog.csdn.net/b2292486308/article/details/53762806/