No "Findjson.cmake" found in CMAKE_MODULE_PATH.

### 该问题是怎么引起的？

编译失败。

### 重现步骤

直接执行 `./build.sh`,环境信息

```bash
$ cat /etc/os-release 
NAME="openEuler"
VERSION="20.03 (LTS-SP1)"
ID="openEuler"
VERSION_ID="20.03"
PRETTY_NAME="openEuler 20.03 (LTS-SP1)"
ANSI_COLOR="0;31"
```

### 报错信息

编译失败

```
$ ./build.sh
---------------- ACL build start ----------------
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-linux-gnu/7.3.0/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-linker-hash-style=gnu --enable-languages=c,c++,objc,obj-c++,fortran,lto --enable-plugin --enable-initfini-array --disable-libgcj --without-isl --without-cloog --enable-gnu-indirect-function --build=x86_64-linux-gnu --with-stage1-ldflags=' -Wl,-z,relro,-z,now' --with-boot-ldflags=' -Wl,-z,relro,-z,now' --with-tune=generic --with-arch_32=x86-64 --disable-multilib
Thread model: posix
gcc version 7.3.0 (GCC) 
mkdir: created directory '/home/rongtao/Git/acl/output'
created /home/rongtao/Git/acl/output
create build directory and build ACL
mkdir: created directory '/home/rongtao/Git/acl/build/'
created /home/rongtao/Git/acl/build/
-DBUILD_PATH=/home/rongtao/Git/acl/build/ -DENABLE_OPEN_SRC=True -DCMAKE_INSTALL_PREFIX=/home/rongtao/Git/acl/output -DPLATFORM=all -DPRODUCT=normal
-- The C compiler identification is GNU 7.3.0
-- The CXX compiler identification is GNU 7.3.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE  
CMake Error at CMakeLists.txt:58 (find_package):
  No "Findjson.cmake" found in CMAKE_MODULE_PATH.

CMake Warning (dev) at CMakeLists.txt:58 (find_package):
  Findjson.cmake must either be part of this project itself, in this case
  adjust CMAKE_MODULE_PATH so that it points to the correct location inside
  its source tree.

Or it must be installed by a package which has already been found via
  find_package().  In this case make sure that package has indeed been found
  and adjust CMAKE_MODULE_PATH to contain the location where that package has
  installed Findjson.cmake.  This must be a location provided by that
  package.  This error in general means that the buildsystem of this project
  is relying on a Find-module without ensuring that it is actually available.

This warning is for project developers.  Use -Wno-dev to suppress it.

-- Configuring incomplete, errors occurred!
See also "/home/rongtao/Git/acl/build/CMakeFiles/CMakeOutput.log".
See also "/home/rongtao/Git/acl/build/CMakeFiles/CMakeError.log".
```

CANN/acl

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