GitHub Actions: Add cross compile tests

Make it work on general MIPS64 processors

Clarify the installation guide in the output of `make`

* Restore NOPARALLEL and conditional compilation

Add function prototypes to make linktest C99-compliant

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>

It is really dangerous to fallback to Loongson core on other
MIPS64 processors.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>

Alpha build fixes

Fix C99-style declaration in converted LAPACK code

Double the wait time for ppc jobs in Travis CI

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>

It will be defined by preprocessor argument.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>

Alpha never have a rmb instruction.
Just use mb for rmb.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>

Add cross compile tests without running checks. Currently
only mips64el, riscv64, mipsel, alpha is wired up.
Just help us make sure those less popular CPUs are not
messed up by changes.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>

Add const attribute to C LAPACK lsame

Fix building tests when NOFORTRAN is not given at all

Fix SBGEMM test to work with INTERFACE64

Update Changelog for 0.3.21

Some compilers (namely LLVM) are not happy with clobbering
registers in inline assembly.
Use $at as temporary register and explicitly use noat
hint.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>

Increase thresholds for STFSM and CTFSM in the LAPACK testsuite

Update LAPACK/LAPACKE to Reference-LAPACK 3.10.1

Add more x86_64 target definitions for CMAKE cross-compiling

* Add support for the Cray Fortran compiler

Add TCORE Generic

Add env variable OMP_ADAPTIVE to control OMP threadpool behaviour

corrected indentation of for and if statement dgemv_thread_safety.cpp

During the cross-compilation on x64 host with MSVC for ARMv8, the
build fails as there is no define directives for Generic core.

It's safer and easier than SIGILL.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>

Fix crash in RISCV autodetection when pmodel is not present in /proc/cpuinfo