access2rohit opened a new issue #18954:
URL: https://github.com/apache/incubator-mxnet/issues/18954
## Description
MKL supports int64 indexing if MXNet is build with flag `MKL_USE_ILP64=ON`
but internally mkl uses `long long` for 64-bit int instead of `int64_t`. This
is fine as long as parameters are passed by value but when they are passed as
reference `*int64_t` is treated as `*long` hence for 64-bit integer pointers
there is a type mismatch by compiler while building MXNet which is `cannot
convert 'long int *' to 'long long int*'` as shown in colsole snippet shown
below
```
../src/api/operator/numpy/linalg/../../../../operator/numpy/linalg/../../tensor/.././c_lapa
ck_api.h: In function 'int MXNET_LAPACK_dgetri(int, int, double*, int, int*,
double*, int)'
:
../src/api/operator/numpy/linalg/../../../../operator/numpy/linalg/../../tensor/.././c_lapa
ck_api.h:382:68: error: cannot convert 'long int*' to 'long long int*' for
argument '5' to
'long long int LAPACKE_dgetri(int, long long int, double*, long long int,
const long long
int*)'
return LAPACKE_##prefix##getri(matrix_layout, n, a, lda, ipiv); \
^
../src/api/operator/numpy/linalg/../../../../operator/numpy/linalg/../../tensor/.././c_lapa
ck_api.h:388:3: note: in expansion of macro 'MXNET_LAPACK_CWRAP_GETRI'
MXNET_LAPACK_CWRAP_GETRI(d, double)
^~~~~~~~~~~~~~~~~~~~~~~~
```
In order to fix it LAPACK and BLAS declarations and calls to MKL need to
casted(reinterpret_cast<long long int*>) inside MXNet code base.
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