下载后编译直接报错

[liupengkd]

我直接操作如下

1. cd ncnn 2. mkdir build && cd build 3. cmake .. 4. make
   make 时报错
   In file included from /usr/include/c++/5/atomic:38:0,
   from /usr/local/include/google/protobuf/io/coded_stream.h:113,
   from /home/liupeng/ncnn/tools/caffe/caffe2ncnn.cpp:24:
   /usr/include/c++/5/bits/c++0x_warning.h:32:2: error: #error This file requires compiler and library support for the ISO C++ 2011 standard. This support must be enabled with the -std=c++11 or -std=gnu++11 compiler options.
   #error This file requires compiler and library support
   ^
   In file included from /usr/local/include/google/protobuf/stubs/common.h:52:0,
   from /usr/local/include/google/protobuf/io/coded_stream.h:135,
   from /home/liupeng/ncnn/tools/caffe/caffe2ncnn.cpp:24:
   /usr/local/include/google/protobuf/stubs/mutex.h:58:8: error: ‘mutex’ in namespace ‘std’ does not name a type
   std::mutex mu_;
   ^
   /usr/local/include/google/protobuf/stubs/mutex.h: In member function ‘void google::protobuf::internal::WrappedMutex::Lock()’:
   /usr/local/include/google/protobuf/stubs/mutex.h:51:17: error: ‘mu_’ was not declared in this scope
   void Lock() { mu_.lock(); }
   ^
   /usr/local/include/google/protobuf/stubs/mutex.h: In member function ‘void google::protobuf::internal::WrappedMutex::Unlock()’:
   /usr/local/include/google/protobuf/stubs/mutex.h:52:19: error: ‘mu_’ was not declared in this scope
   void Unlock() { mu_.unlock(); }
   ^
   /usr/local/include/google/protobuf/stubs/mutex.h: At global scope:
   /usr/local/include/google/protobuf/stubs/mutex.h:61:7: error: expected nested-name-specifier before ‘Mutex’
   using Mutex = WrappedMutex;
   ^
   /usr/local/include/google/protobuf/stubs/mutex.h:66:28: error: expected ‘)’ before ‘*’ token
   explicit MutexLock(Mutex *mu) : mu_(mu) { this->mu_->Lock(); }
   ^
   /usr/local/include/google/protobuf/stubs/mutex.h:69:3: error: ‘Mutex’ does not name a type
   Mutex const mu_;
   ^
   /usr/local/include/google/protobuf/stubs/mutex.h: In destructor ‘google::protobuf::internal::MutexLock::~MutexLock()’:
   /usr/local/include/google/protobuf/stubs/mutex.h:67:24: error: ‘class google::protobuf::internal::MutexLock’ has no member named ‘mu_’
   ~MutexLock() { this->mu_->Unlock(); }
   ^
   /usr/local/include/google/protobuf/stubs/mutex.h: At global scope:
   /usr/local/include/google/protobuf/stubs/mutex.h:80:33: error: expected ‘)’ before ‘’ token
   explicit MutexLockMaybe(Mutex *mu) :
   ^
   In file included from /usr/local/include/google/protobuf/arena.h:48:0,
   from /usr/local/include/google/protobuf/message.h:118,
   from /usr/local/include/google/protobuf/text_format.h:48,
   from /home/liupeng/ncnn/tools/caffe/caffe2ncnn.cpp:26:
   /usr/include/c++/5/typeinfo:39:37: error: expected ‘}’ before end of line
   /usr/include/c++/5/typeinfo:39:37: error: expected unqualified-id before end of line
   /usr/include/c++/5/typeinfo:39:37: error: expected ‘}’ before end of line
   /usr/include/c++/5/typeinfo:39:37: error: expected ‘}’ before end of line
   /usr/include/c++/5/typeinfo:39:37: error: expected ‘}’ before end of line
   /usr/include/c++/5/typeinfo:39:37: error: expected declaration before end of line
   tools/caffe/CMakeFiles/caffe2ncnn.dir/build.make:70: recipe for target 'tools/caffe/CMakeFiles/caffe2ncnn.dir/caffe2ncnn.cpp.o' failed
   make[2]: *** [tools/caffe/CMakeFiles/caffe2ncnn.dir/caffe2ncnn.cpp.o] Error 1
   CMakeFiles/Makefile2:203: recipe for target 'tools/caffe/CMakeFiles/caffe2ncnn.dir/all' failed
   make[1]: *** [tools/caffe/CMakeFiles/caffe2ncnn.dir/all] Error 2
   Makefile:129: recipe for target 'all' failed
   make: *** [all] Error 2

[liupengkd]

同时还有一些警告

[nihui]

顶层 cmakelists.txt 添加 add_definitions(-std=c++11) 试试看...

[double-vane]

@nihui 你好这个CMakeLists.txt是在ncnn根目录下还是在tools下的？十分感谢

[double-vane]

@zhixuanli 你好，这个Makefile是指哪个啊？是Makefile2吗？还是在哪里？谢谢

[zhixuanli]

@double-vane
CMakeList.txt is under the root directory.
After running cmake .. , you will see the Makefile just at the place you will run make command.

[double-vane]

@zhixuanli 十分感谢收到回复，谢谢

[double-vane]

@zhixuanli 你好，又麻烦你了，我在CMakeList里加入add_definitions(-std=c++11)是可以编译成功的，但是在使用的时候会报错：
terminate called after throwing an instance of 'std::system_error'
what(): Unknown error -1
Abort
我从网上查，说是在编译的时候加入-pthread
类似于 -std=c++11 -pthread 1.cpp
由于我不熟悉c++，所以我不清楚在哪里加。
然后试了试你说的方法，编译不成功，所以能帮帮我在哪里加-pthread

[zhixuanli]

@double-vane Actually I was searching for another problem when I saw this issue. I have no experience about ncnn, but I know a little about cmake and make.
May be you can try to add add_definitions(-std=c++11 -pthread) to the CMakeList file.

Good Luck!

[double-vane]

@zhixuanli 感谢收到你的回复，我也是这样加的，但是还是出这个错：
terminate called after throwing an instance of 'std::system_error'
what(): Unknown error -1
Abort
请问你那里可以用tensorflow2ncnn吗？

[zhixuanli]

@double-vane Sorry, I don't know how to solve this problem😂
Waiting for others' help~

[double-vane]

@zhixuanli 还是特别感谢你，我再找找解决方法，如果能解决，再告你一声

[zhixuanli]

@double-vane 😉😉

[double-vane]

您好，特别感谢收到您的解决方案，十分感谢

…

------------------ 原始邮件 ------------------ 发件人: "Tencent/ncnn" ***@***.***>; 发送时间: 2021年6月7日(星期一) 下午2:44 ***@***.***>; ***@***.******@***.***>; 主题: Re: [Tencent/ncnn] 下载后编译直接报错 (#336) @zhixuanli 你好，又麻烦你了，我在CMakeList里加入add_definitions(-std=c++11)是可以编译成功的，但是在使用的时候会报错： terminate called after throwing an instance of 'std::system_error' what(): Unknown error -1 Abort 我从网上查，说是在编译的时候加入-pthread 类似于 -std=c++11 -pthread 1.cpp 由于我不熟悉c++，所以我不清楚在哪里加。 然后试了试你说的方法，编译不成功，所以能帮帮我在哪里加-pthread 您好，我也遇到了CMakeFiles/Makefile2:203: recipe for target 'tools/caffe/CMakeFiles/caffe2ncnn.dir/all' failed 这个报错。然后尝试替换protobuf的版本，还是不行，最后强行删除protobuf，然后用pip install protobuf的方式重新安装。然后再编译ncnn，居然成功了。 — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub, or unsubscribe.

[zhixuanli]

您好，特别感谢收到您的解决方案，十分感谢
…

不客气:)