Fix riscv64 detect

When CORE is empty, use -march=loongson3a. Fix it.

Signed-off-by: Han Gao <gaohan@uniontech.com>

This patch contains following fixes

1. Fix to build without PIC flag
2. Define LAPACK_COMPLEX_STRUCTURE for windows. Builds are failing
without it and changes are consistent with the CMake rules defined
in system.cmake (line 576)

* Add C equivalents of the Fortran routines from Reference-LAPACK as fallbacks, and C_LAPACK variable to trigger their use

Fix recent SkylakeX/DYNAMIC_ARCH DGEMM breakage

[POWER] Add small matrix for sgemm/dgemm on Power10

Big Endian Changes for Power10 kernels

When building for MIPS{64} little-endian variants, the included makefiles
should be the same as for the big-endian.

There are already some adjustments being done for some ARCH names.
This change adds the ones for the `mipsel` and `mips64el` names, so that
the Makefile.mips{64} files get included.

This comes as a result of: https://github.com/openwrt/packages/issues/16649

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>

If no customized GEMM_SMALL_M_PERMIT kernel defined, it will just by pass to normal path.

make SMALL_MATRIX_OPT=1

Power10 fixes

1. Using core loongson3r3 and loongson3r4 for loongson
2. Add DYNAMIC_ARCH for loongson

Change-Id: I1c6b54dbeca3a0cc31d1222af36a7e9bd6ab54c1

allow setting soname without suffix or prefix

LDVERSIONGTEQ35 needs to escape the '>' character.

LDVERSIONGTEQ35 is checking the system ld version which may be different
to the toolchain being used to compile OpenBLAS. We don't have a path
to the linker in our Makefiles, so (ab)use gcc -Wl,--version to get the
version of ld in our toolchain.

Merge branch 'openblas-open-910' of git://github.com/damonyu1989/OpenBLAS into damonyu1989-openblas-open-910