要求CMake找到一个由“Snappy”提供的包配置文件，但是 CMake没有找到。 about srpc

[apachexc]

make srpc 报错

[holmes1412]

你好，可以看看是否有/root/srpc/third_party/snappy/cmake/SnappyConfig.cmake.in这个文件？
另外可以提供下cmake的版本号么？

[apachexc]

cmake3 version 3.17.5

[holmes1412]

你好，这里只是warning的信息，因为你系统默认没有安装的话，这里find_package(snappy)找不到的话，就会从third_party/snappy/cmake里找，后面会继续编译的，如下：

CMake Warning at CMakeLists.txt:43 (find_package):
  By not providing "FindSnappy.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "Snappy", but
  CMake did not find one.

  Could not find a package configuration file provided by "Snappy" with any
  of the following names:

    SnappyConfig.cmake
    snappy-config.cmake

  Add the installation prefix of "Snappy" to CMAKE_PREFIX_PATH or set
  "Snappy_DIR" to a directory containing one of the above files.  If "Snappy"
  provides a separate development package or SDK, be sure it has been
  installed.


-- Looking for C++ include snappy.h
-- Looking for C++ include snappy.h - found
Snappy third_party FOUND. Use for source code dependencies.

-- Looking for C++ include workflow/Workflow.h
-- Looking for C++ include workflow/Workflow.h - found
Workflow third_party FOUND. Use for source code dependencies.
-- Found OpenSSL: /usr/lib64/libcrypto.so (found version "1.1.1k")  
-- Found Protobuf: /usr/local/lib/libprotobuf.so;-lpthread (found suitable version "3.12.0", minimum required is "3.5.0") 
-- Configuring done
-- Generating done
-- Build files have been written to: /root/srpc/srpc_december/build.cmake
make -C build.cmake -f Makefile
make[1]: Entering directory '/root/srpc/srpc_december/build.cmake'
make[2]: Entering directory '/root/srpc/srpc_december/build.cmake'
make[3]: Entering directory '/root/srpc/srpc_december/build.cmake'
make[3]: Leaving directory '/root/srpc/srpc_december/build.cmake'
make[3]: Entering directory '/root/srpc/srpc_december/build.cmake'
make[3]: Leaving directory '/root/srpc/srpc_december/build.cmake'
[  0%] Built target LINK_HEADERS
make[3]: Entering directory '/root/srpc/srpc_december/build.cmake'
make[3]: Leaving directory '/root/srpc/srpc_december/build.cmake'
make[3]: Entering directory '/root/srpc/srpc_december/build.cmake'
[  1%] Building CXX object src/http/CMakeFiles/http.dir/http_module.cc.o
[  3%] Building CXX object src/http/CMakeFiles/http.dir/http_task.cc.o
[  5%] Building CXX object src/http/CMakeFiles/http.dir/http_client.cc.o
[  7%] Building CXX object src/http/CMakeFiles/http.dir/http_server.cc.o
make[3]: Leaving directory '/root/srpc/srpc_december/build.cmake'
[  7%] Built target http
make[3]: Entering directory '/root/srpc/srpc_december/build.cmake'
[  9%] Running cpp protocol buffer compiler on proto/opentelemetry_trace.proto

如果你最终失败了，可以把最终的错误信息发一下～

[apachexc]

[100%] Built target workflow-static
make[3]: Leaving directory /root/srpc/workflow/build.cmake' make[2]: Leaving directory /root/srpc/workflow/build.cmake'
make[1]: Leaving directory `/root/srpc/workflow'
mkdir -p build.cmake
cd build.cmake && cmake3 /root/srpc
-- The C compiler identification is GNU 4.8.5
-- The CXX compiler identification is GNU 4.8.5
-- 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 lz4.h
-- Looking for lz4.h - found
Lz4 third_party FOUND. Use for source code dependencies.
CMake Warning at CMakeLists.txt:43 (find_package):
By not providing "FindSnappy.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "Snappy", but
CMake did not find one.

Could not find a package configuration file provided by "Snappy" with any
of the following names:

SnappyConfig.cmake
snappy-config.cmake

Add the installation prefix of "Snappy" to CMAKE_PREFIX_PATH or set
"Snappy_DIR" to a directory containing one of the above files. If "Snappy"
provides a separate development package or SDK, be sure it has been
installed.

-- Looking for C++ include snappy.h
-- Looking for C++ include snappy.h - found
Snappy third_party FOUND. Use for source code dependencies.
-- Looking for C++ include workflow/Workflow.h
-- Looking for C++ include workflow/Workflow.h - not found
CMake Error at CMakeLists.txt:74 (message):
Protobuf compiler is missing!

-- Configuring incomplete, errors occurred!
See also "/root/srpc/build.cmake/CMakeFiles/CMakeOutput.log".
See also "/root/srpc/build.cmake/CMakeFiles/CMakeError.log".
make: *** [base] Error 1

[holmes1412]

这个看起来是没有安装protoc~ protobuf和protoc都需要自行安装，一般安装protobuf的时候都会一起安装，可以直接执行一下protoc看看是否有？