ENH: Start abstracting rules for kernels

kernel/meson.build

@@ -0,0 +1,98 @@
+# Ordered As per https://netlib.org/blas/blasqr.pdf
+# NOTE: xROTG xROTMG xROTM have no kernels?
+_kinds = []
+_rk = ['s', 'd']
+_ck = ['c', 'z']
+_std_dk = _rk + _ck # Standard precisions
+# TODO: Actually test and set this
+if fma3
+  fma3_flag = '-mfma'
+endif
+# TODO: This is currently following x86_64 generic for src and dir, but it needs
+# to diversify
+# NOTE: The def and undefs are from Makefile.L1
+# Construct all PRECsymbKERNEL from src and dir via files(dir + src)
+# For the precs array, the following mapping is used for c_args:
+# undef --> -Uwhatever
+# def --> -Dwhatever
+# addl --> passed AS IS
+kops_array = [
+  # Level 1 BLAS
+  {
+    'base': 'rot',
+    # TODO: A lot of these flags are basically repeating..
+    'precs': {
+      's' : {
+        'dir': 'arm',
+        'kernel': 'rot.c',
+        'undef': ['COMPLEX', 'DOUBLE'],
+        'addl': [fma3_flag],
+      },
+      'd' : {
+        'dir': 'arm',
+        'kernel': 'rot.c',
+        'undef': ['COMPLEX'],
+        'def': ['DOUBLE'],
+        'addl': [fma3_flag],
+      },
+      'q' : {
+        'dir': 'arm',
+        'kernel': 'zrot.c',
+        'undef': ['COMPLEX'],
+        'def': ['DXDOUBLE'],
+      },
+      'cs' : {
+        'dir': 'arm',
+        'kernel': 'zrot.c',
+        'undef': ['DOUBLE'],
+        'def': ['COMPLEX'],
+      },
+      'zd' : {
+        'dir': 'arm',
+        'kernel': 'zrot.c',
+        'def': ['COMPLEX', 'DOUBLE'],
+      },
+      'xq' : {
+        'dir': 'arm',
+        'kernel': 'zrot.c',
+        'def': ['COMPLEX', 'DXDOUBLE'],
+      },
+    },
+  },
+  {'symb': 'swap',
+   'src': {'real': 'swap', 'cmplx': 'zswap', 'ext': '.c'},
+   'dir': 'arm', 'precs': _std_dk },
+  {'symb': 'scal',
+   'src': {'real': 'scal', 'cmplx': 'zscal', 'ext': '.c'},
+   'dir': 'arm', 'precs': _std_dk },
+  {'symb': 'copy',
+   'src': {'real': 'copy', 'cmplx': 'zcopy', 'ext': '.c'},
+   'dir': 'arm', 'precs': _std_dk },
+  {'symb': 'axpy',
+   'src': {'real': 'axpy', 'cmplx': 'zaxpy', 'ext': '.c'},
+   'dir': 'arm', 'precs': _std_dk },
+  {'symb': 'dot',
+   'src': {'real': 'dot', 'cmplx': 'zdot', 'ext': '.c'},
+   'dir': 'arm', 'precs': _std_dk },
+]
+
+kernel_confs = []
+
+foreach root : blas1_roots
+  fname = root + '.S'
+  defs = []
+  foreach prec : real_kinds
+    name = prec + fname + '_k'
+    kernel_confs += {'defs': defs, 'name': name, 'src': fname}
+  endforeach
+endforeach
+
+_static_libs = []
+foreach conf: kernel_confs
+    _static_libs += static_library(
+        conf['name'],
+        conf['src'],
+        include_directories:  _inc,
+        c_args: conf['defs'],
+    )
+endforeach