wangzhengyang 718c41634f feat: 切换后端至PaddleOCR-NCNN，切换工程为CMake

1.项目后端整体迁移至PaddleOCR-NCNN算法，已通过基本的兼容性测试
2.工程改为使用CMake组织，后续为了更好地兼容第三方库，不再提供QMake工程
3.重整权利声明文件，重整代码工程，确保最小化侵权风险

Log: 切换后端至PaddleOCR-NCNN，切换工程为CMake
Change-Id: I4d5d2c5d37505a4a24b389b1a4c5d12f17bfa38c

2022-05-10 10:22:11 +08:00

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mlir2ncnn

Compile

Clone LLVM

https://github.com/llvm/llvm-project.git
git checkout -b mlir <a_working_commit_id>

Current working commit id is 74e6030bcbcc8e628f9a99a424342a0c656456f9:

$ git log

commit 74e6030bcbcc8e628f9a99a424342a0c656456f9 (HEAD -> main, origin/main, origin/HEAD)
Author: Craig Topper <craig.topper@sifive.com>
Date:   Thu Mar 4 22:30:38 2021 -0800

    [TargetLowering] Use HandleSDNodes to prevent nodes from being deleted by recursive calls in getNegatedExpression.

It is determined by query lastest git commit date of tools/mlir directory.

Compile mlir

cd llvm-project
mkdir build
cd build
cmake -G Ninja -DCMAKE_INSTALL_PREFIX=install -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=ON -DLLVM_ENABLE_PROJECTS="mlir" -DLLVM_TARGETS_TO_BUILD="" -DLLVM_INCLUDE_EXAMPLES=OFF -DLLVM_INCLUDE_TESTS=OFF ../llvm/
ninja -j8
ninja install

Compile mlir2ncnn

cd tools/mlir
mkdir build
cd build
cmake .. -D LLVM_DIR=<path/to/your/llvm_install/lib/cmake/llvm>
make

Usage

Export .mlir

See https://zhuanlan.zhihu.com/p/152535430

Usage mlir2ncnn

./mlir2ncnn pix2pix.mlir pix2pix.param pix2pix.bin

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mlir2ncnn

Compile

Usage

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