error: ‘_cvtsh_ss’ was not declared in this scope

[BaoyanWang]

In file included from /usr/include/c++/4.8.2/ext/hash_map:60:0,
from /data1/wangbaoyan/nn_ner/NNNamedEntity/LibN3L/Hash_map.hpp:73,
from /data1/wangbaoyan/nn_ner/NNNamedEntity/LibN3L/MyLib.h:29,
from /data1/wangbaoyan/nn_ner/NNNamedEntity/LibN3L/CheckGrad.h:13,
from /data1/wangbaoyan/nn_ner/NNNamedEntity/LibN3L/N3L.h:4,
from /data1/wangbaoyan/nn_ner/NNNamedEntity/SparseTNNCRFMLLabeler.h:12,
from /data1/wangbaoyan/nn_ner/NNNamedEntity/SparseTNNCRFMLLabeler.cpp:8:
/usr/include/c++/4.8.2/backward/backward_warning.h:32:2: warning: #warning This file includes at least one deprecated or antiquated header which may be removed without further notice at a future date. Please use a non-deprecated interface with equivalent functionality instead. For a listing of replacement headers and interfaces, consult the file backward_warning.h. To disable this warning use -Wno-deprecated. [-Wcpp]
#warning
^
In file included from /data1/wangbaoyan/nn_ner/NNNamedEntity/mshadow/./base.h:278:0,
from /data1/wangbaoyan/nn_ner/NNNamedEntity/mshadow/tensor.h:16,
from /data1/wangbaoyan/nn_ner/NNNamedEntity/LibN3L/CheckGrad.h:12,
from /data1/wangbaoyan/nn_ner/NNNamedEntity/LibN3L/N3L.h:4,
from /data1/wangbaoyan/nn_ner/NNNamedEntity/SparseTNNCRFMLLabeler.h:12,
from /data1/wangbaoyan/nn_ner/NNNamedEntity/SparseTNNCRFMLLabeler.cpp:8:
/data1/wangbaoyan/nn_ner/NNNamedEntity/mshadow/././half.h: In member function ‘mshadow::half::half_t::operator float() const’:
/data1/wangbaoyan/nn_ner/NNNamedEntity/mshadow/././half.h:73:29: error: ‘_cvtsh_ss’ was not declared in this scope
return T(cvtsh_ss(half)); /* NOLINT()/
^
/data1/wangbaoyan/nn_ner/NNNamedEntity/mshadow/././half.h:120:3: note: in expansion of macro ‘MSHADOW_HALF_CONVERSIONOP’
MSHADOW_HALF_CONVERSIONOP(float)
^
/data1/wangbaoyan/nn_ner/NNNamedEntity/mshadow/././half.h: In member function ‘mshadow::half::half_t::operator float() const volatile’:
/data1/wangbaoyan/nn_ner/NNNamedEntity/mshadow/././half.h:76:29: error: ‘_cvtsh_ss’ was not declared in this scope
return T(cvtsh_ss(half)); /* NOLINT()/
^
/data1/wangbaoyan/nn_ner/NNNamedEntity/mshadow/././half.h:120:3: note: in expansion of macro ‘MSHADOW_HALF_CONVERSIONOP’
MSHADOW_HALF_CONVERSIONOP(float)
^
/data1/wangbaoyan/nn_ner/NNNamedEntity/mshadow/././half.h: In member function ‘void mshadow::half::half_t::constructor(const T&)’:
/data1/wangbaoyan/nn_ner/NNNamedEntity/mshadow/././half.h:260:51: error: there are no arguments to ‘_cvtss_sh’ that depend on a template parameter, so a declaration of ‘cvtss_sh’ must be available [-fpermissive]
half = _cvtss_sh(static_cast(value), 0);

[CDCrystal]

Maybe you could update your GCC/G++ to 4.9 or higher, that may be fixed.

[bulvara]

Use the patch from https://gitlab.com/libeigen/eigen/-/issues/2395 (end of discussion)