Ncnn: trying to build with ncnn2int8 support but getting this error

[soham24]

Scanning dependencies of target ncnn2int8
[ 70%] Building CXX object tools/quantize/CMakeFiles/ncnn2int8.dir/ncnn2int8.cpp.o
[ 70%] Built target ncnn2mem
Scanning dependencies of target ncnn2table
/home/orbosoham/ncnnnew/ncnn/tools/quantize/ncnn2int8.cpp: In function 'bool read_int8scale_table(const char*, std::map, std::vector >&, std::map, std::vector >&)':
/home/orbosoham/ncnnnew/ncnn/tools/quantize/ncnn2int8.cpp:98:17: error: 'nullptr' was not declared in this scope
char *pch = nullptr;

/home/orbosoham/ncnnnew/ncnn/tools/quantize/ncnn2int8.cpp: In member function 'int NetQuantize::quantize_convolution()':
/home/orbosoham/ncnnnew/ncnn/tools/quantize/ncnn2int8.cpp:182:14: error: 'iter_data' does not name a type
auto iter_data = blob_int8scale_table.find(layers[i]->name);
^
/home/orbosoham/ncnnnew/ncnn/tools/quantize/ncnn2int8.cpp:183:13: error: 'iter_data' was not declared in this scope
if (iter_data == blob_int8scale_table.end())
^
/home/orbosoham/ncnnnew/ncnn/tools/quantize/ncnn2int8.cpp:189:14: error: 'iter' does not name a type
auto iter = weight_int8scale_table.find(key);

/home/orbosoham/ncnnnew/ncnn/tools/quantize/ncnn2int8.cpp:190:13: error: 'iter' was not declared in this scope
if (iter == weight_int8scale_table.end())
^
/home/orbosoham/ncnnnew/ncnn/tools/quantize/ncnn2int8.cpp:197:14: error: 'convolution' does not name a type
auto convolution = (ncnn::Convolution*)layers[i];
^
/home/orbosoham/ncnnnew/ncnn/tools/quantize/ncnn2int8.cpp:199:54: error: 'iter' was not declared in this scope

[soham24]

solved:
by adding following to cmakelist
set (CMAKE_CXX_STANDARD 11)

[sebastianfelipe]

I went here to write the same issue. But there it is, same case. But there is another problem, related with Vulkan, right now it has a segmentation fault (for example when is running the mnet.25-opt for retinaface algorithm). Not sure if your solution can solve that too :c

[sebastianfelipe]

This is not solved yet. I added the line in the CMakeList and nothing happened. Same error.

[ 96%] Linking CXX executable ncnn2int8
[ 96%] Built target ncnn2int8
Scanning dependencies of target test_softmax
/opt/ncnn/tools/quantize/ncnn2table.cpp:732:9: warning: braces around scalar initializer
[-Wbraced-scalar-init]
{
^
/opt/ncnn/tools/quantize/ncnn2table.cpp:746:16: error: 'has' is a protected member of
'cv::CommandLineParser'
if (parser.has("help"))
^
/usr/local/Cellar/opencv@2/2.4.13.7_5/include/opencv2/core/core.hpp:4818:10: note: declared
protected here
bool has(const std::string& keys);
^
/opt/ncnn/tools/quantize/ncnn2table.cpp:746:9: error: 'this' argument to member function 'has' has
type 'const cv::CommandLineParser', but function is not marked const
if (parser.has("help"))
^~
/usr/local/Cellar/opencv@2/2.4.13.7_5/include/opencv2/core/core.hpp:4818:10: note: 'has' declared
here
bool has(const std::string& keys);
^
/opt/ncnn/tools/quantize/ncnn2table.cpp:748:16: error: no member named 'printMessage' in
'cv::CommandLineParser'
parser.printMessage();
~~ ^
/opt/ncnn/tools/quantize/ncnn2table.cpp:753:17: error: 'has' is a protected member of
'cv::CommandLineParser'
if (!parser.has("param") || !parser.has("bin") || !parser.has("images") || !parser.has("...
^
/usr/local/Cellar/opencv@2/2.4.13.7_5/include/opencv2/core/core.hpp:4818:10: note: declared
protected here
bool has(const std::string& keys);
^
/opt/ncnn/tools/quantize/ncnn2table.cpp:753:10: error: 'this' argument to member function 'has' has
type 'const cv::CommandLineParser', but function is not marked const
if (!parser.has("param") || !parser.has("bin") || !parser.has("images") || !parser.has("...
^~
/usr/local/Cellar/opencv@2/2.4.13.7_5/include/opencv2/core/core.hpp:4818:10: note: 'has' declared
here
bool has(const std::string& keys);
^
/opt/ncnn/tools/quantize/ncnn2table.cpp:753:41: error: 'has' is a protected member of
'cv::CommandLineParser'
if (!parser.has("param") || !parser.has("bin") || !parser.has("images") || !parser.has("...
^
/usr/local/Cellar/opencv@2/2.4.13.7_5/include/opencv2/core/core.hpp:4818:10: note: declared
protected here
bool has(const std::string& keys);
^
/opt/ncnn/tools/quantize/ncnn2table.cpp:753:34: error: 'this' argument to member function 'has' has
type 'const cv::CommandLineParser', but function is not marked const
if (!parser.has("param") || !parser.has("bin") || !parser.has("images") || !parser.has("...
^~
/usr/local/Cellar/opencv@2/2.4.13.7_5/include/opencv2/core/core.hpp:4818:10: note: 'has' declared
here
bool has(const std::string& keys);
^
/opt/ncnn/tools/quantize/ncnn2table.cpp:753:63: error: 'has' is a protected member of
'cv::CommandLineParser'
if (!parser.has("param") || !parser.has("bin") || !parser.has("images") || !parser.has("...
^
/usr/local/Cellar/opencv@2/2.4.13.7_5/include/opencv2/core/core.hpp:4818:10: note: declared
protected here
bool has(const std::string& keys);
^
/opt/ncnn/tools/quantize/ncnn2table.cpp:753:56: error: 'this' argument to member function 'has' has
type 'const cv::CommandLineParser', but function is not marked const
if (!parser.has("param") || !parser.has("bin") || !parser.has("images") || !parser.has("...
^~
/usr/local/Cellar/opencv@2/2.4.13.7_5/include/opencv2/core/core.hpp:4818:10: note: 'has' declared
here
bool has(const std::string& keys);
^
/opt/ncnn/tools/quantize/ncnn2table.cpp:753:88: error: 'has' is a protected member of
'cv::CommandLineParser'
if (!parser.has("param") || !parser.has("bin") || !parser.has("images") || !parser.has("outp...
^
/usr/local/Cellar/opencv@2/2.4.13.7_5/include/opencv2/core/core.hpp:4818:10: note: declared
protected here
bool has(const std::string& keys);
^
/opt/ncnn/tools/quantize/ncnn2table.cpp:753:81: error: 'this' argument to member function 'has' has
type 'const cv::CommandLineParser', but function is not marked const
if (!parser.has("param") || !parser.has("bin") || !parser.has("images") || !parser.has("outp...
^~
/usr/local/Cellar/opencv@2/2.4.13.7_5/include/opencv2/core/core.hpp:4818:10: note: 'has' declared
here
bool has(const std::string& keys);
^
/opt/ncnn/tools/quantize/ncnn2table.cpp:753:113: error: 'has' is a protected member of
'cv::CommandLineParser'
...|| !parser.has("bin") || !parser.has("images") || !parser.has("output") || !parser.has("mean...
^
/usr/local/Cellar/opencv@2/2.4.13.7_5/include/opencv2/core/core.hpp:4818:10: note: declared
protected here
bool has(const std::string& keys);
^
/opt/ncnn/tools/quantize/ncnn2table.cpp:753:106: error: 'this' argument to member function 'has' has
type 'const cv::CommandLineParser', but function is not marked const
...|| !parser.has("bin") || !parser.has("images") || !parser.has("output") || !parser.has("mean...
^~
/usr/local/Cellar/opencv@2/2.4.13.7_5/include/opencv2/core/core.hpp:4818:10: note: 'has' declared
here
bool has(const std::string& keys);
^
/opt/ncnn/tools/quantize/ncnn2table.cpp:753:136: error: 'has' is a protected member of
'cv::CommandLineParser'
...|| !parser.has("images") || !parser.has("output") || !parser.has("mean") || !parser.has("nor...
^
/usr/local/Cellar/opencv@2/2.4.13.7_5/include/opencv2/core/core.hpp:4818:10: note: declared
protected here
bool has(const std::string& keys);
^
/opt/ncnn/tools/quantize/ncnn2table.cpp:753:129: error: 'this' argument to member function 'has' has
type 'const cv::CommandLineParser', but function is not marked const
...|| !parser.has("images") || !parser.has("output") || !parser.has("mean") || !parser.has("nor...
^~
/usr/local/Cellar/opencv@2/2.4.13.7_5/include/opencv2/core/core.hpp:4818:10: note: 'has' declared
here
bool has(const std::string& keys);
^
/opt/ncnn/tools/quantize/ncnn2table.cpp:756:16: error: no member named 'printMessage' in
'cv::CommandLineParser'
parser.printMessage();
~~ ^
/opt/ncnn/tools/quantize/ncnn2table.cpp:761:50: error: no matching member function for call to 'get'
const std::string image_folder_path = parser.get("images");
~^~~~~
/usr/local/Cellar/opencv@2/2.4.13.7_5/include/opencv2/core/core.hpp:4801:9: note: candidate function
template not viable: 'this' argument has type 'const cv::CommandLineParser', but method is not
marked const
_Tp get(const std::string& name, bool space_delete=true)
^
/opt/ncnn/tools/quantize/ncnn2table.cpp:762:53: error: no matching member function for call to 'get'
const std::string ncnn_param_file_path = parser.get("param");
~^~~~~
/usr/local/Cellar/opencv@2/2.4.13.7_5/include/opencv2/core/core.hpp:4801:9: note: candidate function
template not viable: 'this' argument has type 'const cv::CommandLineParser', but method is not
marked const
_Tp get(const std::string& name, bool space_delete=true)
^
/opt/ncnn/tools/quantize/ncnn2table.cpp:763:51: error: no matching member function for call to 'get'
const std::string ncnn_bin_file_path = parser.get("bin");
~^~~~~
/usr/local/Cellar/opencv@2/2.4.13.7_5/include/opencv2/core/core.hpp:4801:9: note: candidate function
template not viable: 'this' argument has type 'const cv::CommandLineParser', but method is not
marked const
_Tp get(const std::string& name, bool space_delete=true)
^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
[ 96%] Building CXX object tests/CMakeFiles/test_softmax.dir/test_softmax.cpp.o

[soham24]

@sebastianfelipe hii
I have used opencv 4.1
I see your version is opencv@2/2.4.13.7_5
that may be the issue?

[sebastianfelipe]

Probably that's the problem, but in the lasts versions it wouldn't be a problem to compile it, probably it is necessary have a check before the make install step, there's no error when CMake is used. After make git pull I found all these errors. With the last release, everything is working.

[soham24]

you can install opencv real fast on ubantu with learnopencv git repo script

[soham24]

https://github.com/spmallick/learnopencv/tree/master/InstallScripts

[sebastianfelipe]

I'm on OSX. Gonna change that version. Thanks.

[sebastianfelipe]

Cannot find the version 4.1 directly, only 4.2, and there still have problems. I think the lasts commits have compatibility issues, I already linked the PKG_CONFIG_PATH and everything, it is compiling with version 4.2.

/usr/local/Cellar/opencv/4.2.0_1/include/opencv4/opencv2/core/mat.hpp:1010:29: error: no template
named 'initializer_list' in namespace 'std'
explicit Mat(const std::initializer_list<_Tp> list);
~^
/usr/local/Cellar/opencv/4.2.0_1/include/opencv4/opencv2/core/mat.hpp:1014:52: error: no template
named 'initializer_list' in namespace 'std'
template explicit Mat(const std::initializer_list sizes, const std::i...
~^
/usr/local/Cellar/opencv/4.2.0_1/include/opencv4/opencv2/core/mat.hpp:1014:92: error: no template
named 'initializer_list' in namespace 'std'
..._Tp> explicit Mat(const std::initializer_list sizes, const std::initializer_list<_Tp> l...
~^
/usr/local/Cellar/opencv/4.2.0_1/include/opencv4/opencv2/core/mat.hpp:2225:15: error: no template
named 'initializer_list' in namespace 'std'
Mat_(std::initializer_list<_Tp> values);
~^
fatal error: too many errors emitted, stopping now [-ferror-limit=]

[sebastianfelipe]

I think you should do a compatibility check before (at the CMAKE step possibly) to avoid this kind of issues.

[sebastianfelipe]

solved:
by adding following to cmakelist
set (CMAKE_CXX_STANDARD 11)

This was the solution for the last issue that happened to me. It works in version 4.2.

Thanks.

[nihui]

shall be fixed soon
https://github.com/Tencent/ncnn/pull/1511

[quocnhat]

set (CMAKE_CXX_STANDARD 11)

You saved my day, God bless you!