building errors

[danielnjoo]

OS: Ubuntu 17.04

Thanks for any help :)

Compilation worked (after commenting out add_subdirectory line for examples), but running into errors with building:

[ 14%] Building CXX object src/caffe/CMakeFiles/caffe.dir/layers/concat_layer.cpp.o
[ 16%] Building CXX object src/caffe/CMakeFiles/caffe.dir/layers/contrastive_loss_layer.cpp.o
/home/daniel/Desktop/cats/hed/src/caffe/layers/contrastive_loss_layer.cpp: In instantiation of ‘void caffe::ContrastiveLossLayer::Forward_cpu(const std::vector<caffe::Blob>&, const std::vector<caffe::Blob>&) [with Dtype = float]’:
/home/daniel/Desktop/cats/hed/src/caffe/layers/contrastive_loss_layer.cpp:118:1: required from here
/home/daniel/Desktop/cats/hed/src/caffe/layers/contrastive_loss_layer.cpp:56:30: error: no matching function for call to ‘max(float, double)’
Dtype dist = std::max(margin - sqrt(dist_sq_.cpu_data()[i]), 0.0);
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/6/algorithm:61:0,
from /home/daniel/Desktop/cats/hed/src/caffe/layers/contrastive_loss_layer.cpp:1:
/usr/include/c++/6/bits/stl_algobase.h:219:5: note: candidate: template constexpr const _Tp& std::max(const _Tp&, const _Tp&)
max(const _Tp& __a, const _Tp& __b)
^~~
/usr/include/c++/6/bits/stl_algobase.h:219:5: note: template argument deduction/substitution failed:
/home/daniel/Desktop/cats/hed/src/caffe/layers/contrastive_loss_layer.cpp:56:30: note: deduced conflicting types for parameter ‘const Tp’ (‘float’ and ‘double’)
Dtype dist = std::max(margin - sqrt(dist_sq.cpu_data()[i]), 0.0);
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/6/algorithm:61:0,
from /home/daniel/Desktop/cats/hed/src/caffe/layers/contrastive_loss_layer.cpp:1:
/usr/include/c++/6/bits/stl_algobase.h:265:5: note: candidate: template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)
max(const _Tp& __a, const _Tp& __b, _Compare __comp)
^~~
/usr/include/c++/6/bits/stl_algobase.h:265:5: note: template argument deduction/substitution failed:
/home/daniel/Desktop/cats/hed/src/caffe/layers/contrastive_loss_layer.cpp:56:30: note: deduced conflicting types for parameter ‘const Tp’ (‘float’ and ‘double’)
Dtype dist = std::max(margin - sqrt(dist_sq.cpu_data()[i]), 0.0);
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/6/algorithm:62:0,
from /home/daniel/Desktop/cats/hed/src/caffe/layers/contrastive_loss_layer.cpp:1:
/usr/include/c++/6/bits/stl_algo.h:3459:5: note: candidate: template constexpr _Tp std::max(std::initializer_list<_Tp>)
max(initializer_list<_Tp> __l)
^~~
/usr/include/c++/6/bits/stl_algo.h:3459:5: note: template argument deduction/substitution failed:
/home/daniel/Desktop/cats/hed/src/caffe/layers/contrastive_loss_layer.cpp:56:30: note: mismatched types ‘std::initializer_list<Tp>’ and ‘float’
Dtype dist = std::max(margin - sqrt(dist_sq.cpu_data()[i]), 0.0);
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/6/algorithm:62:0,
from /home/daniel/Desktop/cats/hed/src/caffe/layers/contrastive_loss_layer.cpp:1:
/usr/include/c++/6/bits/stl_algo.h:3465:5: note: candidate: template<class _Tp, class _Compare> constexpr _Tp std::max(std::initializer_list<_Tp>, _Compare)
max(initializer_list<_Tp> __l, _Compare __comp)
^~~
/usr/include/c++/6/bits/stl_algo.h:3465:5: note: template argument deduction/substitution failed:
/home/daniel/Desktop/cats/hed/src/caffe/layers/contrastive_loss_layer.cpp:56:30: note: mismatched types ‘std::initializer_list<Tp>’ and ‘float’
Dtype dist = std::max(margin - sqrt(dist_sq.cpu_data()[i]), 0.0);
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/caffe/CMakeFiles/caffe.dir/build.make:398: recipe for target 'src/caffe/CMakeFiles/caffe.dir/layers/contrastive_loss_layer.cpp.o' failed
make[2]: *** [src/caffe/CMakeFiles/caffe.dir/layers/contrastive_loss_layer.cpp.o] Error 1
CMakeFiles/Makefile2:272: recipe for target 'src/caffe/CMakeFiles/caffe.dir/all' failed
make[1]: *** [src/caffe/CMakeFiles/caffe.dir/all] Error 2
Makefile:127: recipe for target 'all' failed
make: *** [all] Error 2

[sfeng15]

Have the same issue!

[KelvinZhang95]

Have you solved this ?
I met the same error

[pc4653]

If anyone still wondering, just go into the file and add float() to the variables should get rid of this.

[empty16]

Replace line 56 by this one :
Dtype dist = std::max(margin - (float)sqrt(dist_sq_.cpu_data()[i]), Dtype(0.0));

[frankie-yanfeng]

Dtype dist = std::max(margin - (double)sqrt(dist_sq_.cpu_data()[i]), 0.0);