请问支持opencv 3.2.0 版本的x86平台编译吗

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**I'm submitting a ...** (check one with "x")

```
[x ] bug report
[x] help wanted
[ ] feature request
```

**Current behavior**
我下载opencv 3.2.0版本，但是貌似该工具只支持x64平台编译，强行编译x86会报错。
错误代码：
```
8>thirdparty.lib(helper.obj) : error LNK2001: unresolved external symbol "void __cdecl cv::fastFree(void *)" (?fastFree@cv@@YAXPAX@Z) [F:\EasyPR\EasyPR\build_x86\demo.vcxproj]
8>easypr.lib(feature.obj) : error LNK2001: unresolved external symbol "void __cdecl cv::fastFree(void *)" (?fastFree@cv@@YAXPAX@Z) [F:\EasyPR\EasyPR\build_x86\demo.vcxproj]
8>easypr.lib(create_data.obj) : error LNK2001: unresolved external symbol "void __cdecl cv::fastFree(void *)" (?fastFree@cv@@YAXPAX@Z) [F:\EasyPR\EasyPR\build_x86\demo.vcxproj]
8>thirdparty.lib(mser2.obj) : error LNK2001: unresolved external symbol "void __cdecl cv::fastFree(void *)" (?fastFree@cv@@YAXPAX@Z) [F:\EasyPR\EasyPR\build_x86\demo.vcxproj]
8>thirdparty.lib(lbp.obj) : error LNK2001: unresolved external symbol "void __cdecl cv::fastFree(void *)" (?fastFree@cv@@YAXPAX@Z) [F:\EasyPR\EasyPR\build_x86\demo.vcxproj]
8>easypr.lib(plate_recognize.obj) : error LNK2001: unresolved external symbol "void __cdecl cv::fastFree(void *)" (?fastFree@cv@@YAXPAX@Z) [F:\EasyPR\EasyPR\build_x86\demo.vcxproj]
8>easypr.lib(svm_train.obj) : error LNK2001: unresolved external symbol "void __cdecl cv::fastFree(void *)" (?fastFree@cv@@YAXPAX@Z) [F:\EasyPR\EasyPR\build_x86\demo.vcxproj]
8>easypr.lib(ann_train.obj) : error LNK2001: unresolved external symbol "void __cdecl cv::fastFree(void *)" (?fastFree@cv@@YAXPAX@Z) [F:\EasyPR\EasyPR\build_x86\demo.vcxproj]
8>easypr.lib(annCh_train.obj) : error LNK2001: unresolved external symbol "void __cdecl cv::fastFree(void *)" (?fastFree@cv@@YAXPAX@Z) [F:\EasyPR\EasyPR\build_x86\demo.vcxproj]
8>easypr.lib(chars_segment.obj) : error LNK2001: unresolved external symbol "void __cdecl cv::fastFree(void *)" (?fastFree@cv@@YAXPAX@Z) [F:\EasyPR\EasyPR\build_x86\demo.vcxproj]
8>easypr.lib(chars_identify.obj) : error LNK2001: unresolved external symbol "void __cdecl cv::fastFree(void *)" (?fastFree@cv@@YAXPAX@Z) [F:\EasyPR\EasyPR\build_x86\demo.vcxproj]
8>easypr.lib(core_func.obj) : error LNK2001: unresolved external symbol "void __cdecl cv::fastFree(void *)" (?fastFree@cv@@YAXPAX@Z) [F:\EasyPR\EasyPR\build_x86\demo.vcxproj]
8>easypr.lib(chars_recognise.obj) : error LNK2001: unresolved external symbol "void __cdecl cv::fastFree(void *)" (?fastFree@cv@@YAXPAX@Z) [F:\EasyPR\EasyPR\build_x86\demo.vcxproj]
8>main.obj : error LNK2001: unresolved external symbol "void __cdecl cv::fastFree(void *)" (?fastFree@cv@@YAXPAX@Z) [F:\EasyPR\EasyPR\build_x86\demo.vcxproj]
8>easypr.lib(plate_locate.obj) : error LNK2001: unresolved external symbol "void __cdecl cv::fastFree(void *)" (?fastFree@cv@@YAXPAX@Z) [F:\EasyPR\EasyPR\build_x86\demo.vcxproj]
8>easypr.lib(plate_judge.obj) : error LNK2001: unresolved external symbol "void __cdecl cv::fastFree(void *)" (?fastFree@cv@@YAXPAX@Z) [F:\EasyPR\EasyPR\build_x86\demo.vcxproj]
8>easypr.lib(plate_detect.obj) : error LNK2001: unresolved external symbol "void __cdecl cv::fastFree(void *)" (?fastFree@cv@@YAXPAX@Z) [F:\EasyPR\EasyPR\build_x86\demo.vcxproj]
8>easypr.lib(feature.obj) : error LNK2001: unresolved external symbol "private: char * __thiscall cv::String::allocate(unsigned int)" (?allocate@String@cv@@AAEPADI@Z) [F:\EasyPR\EasyPR\build_x86\demo.vcxproj]
8>thirdparty.lib(mser2.obj) : error LNK2001: unresolved external symbol "private: char * __thiscall cv::String::allocate(unsigned int)" (?allocate@String@cv@@AAEPADI@Z) [F:\EasyPR\EasyPR\build_x86\demo.vcxproj]
8>thirdparty.lib(helper.obj) : error LNK2001: unresolved external symbol "private: char * __thiscall cv::String::allocate(unsigned int)" (?allocate@String@cv@@AAEPADI@Z) [F:\EasyPR\EasyPR\build_x86\demo.vcxproj]
8>easypr.lib(plate_recognize.obj) : error LNK2001: unresolved external symbol "private: char * __thiscall cv::String::allocate(unsigned int)" (?allocate@String@cv@@AAEPADI@Z) [F:\EasyPR\EasyPR\build_x86\demo.vcxproj]
8>easypr.lib(svm_train.obj) : error LNK2001: unresolved external symbol "private: char * __thiscall cv::String::allocate(unsigned int)" (?allocate@String@cv@@AAEPADI@Z) [F:\EasyPR\EasyPR\build_x86\demo.vcxproj]
```
错误文档在附件中可以找到
[build_x86.log](https://github.com/liuruoze/EasyPR/files/7225476/build_x86.log)

**Expected/desired behavior**
编译通过

**Reproduction of the problem**

**What is the expected behavior?**

希望提供解答，如何编译x86平台？

**What is the motivation / use case for changing the behavior?**

**Please tell us about your environment:**

* **System:** Window Server 2016

* **Compiler version/IDE:** MSVC 14.29.30133

* **CMake version:** 3.19.6

* **OpenCV version:** 3.2.0

Start with build_x86.log and the generated build_x86/demo.vcxproj, then verify how the x86 build selects OpenCV 3.2.0 libraries. Done means the x86 configuration builds successfully without the listed unresolved cv::fastFree and cv::String::allocate symbols.

Written by the indexing model from the issue text.