Add homebrew-based build instructions for apple silicon

scripts/spack/configs/macos_sonoma_aarch64/spack.yaml

@@ -0,0 +1,129 @@
+
+spack:
+  # add package specs to the `specs` list
+  view: true
+  concretizer:
+    unify: true
+  packages:
+    all:
+      compiler: [clang, gcc]
+      providers:
+        blas: [netlib-lapack]
+        lapack: [netlib-lapack]
+        mpi: [openmpi]
+    mpi:
+      buildable: false
+    openmpi:
+      buildable: false
+      externals:
+      - spec: [email protected]_1
+        prefix: /opt/homebrew
+    netlib-lapack:
+      buildable: false
+      externals:
+      - spec: [email protected]
+        prefix: /opt/homebrew/opt/lapack
+    autoconf:
+      buildable: false
+      externals:
+      - spec: [email protected]
+        prefix: /opt/homebrew
+    automake:
+      buildable: false
+      externals:
+      - spec: [email protected]
+        prefix: /opt/homebrew
+    bzip2:
+      buildable: false
+      externals:
+      - spec: [email protected]
+        prefix: /opt/homebrew/opt/bzip2
+    cmake:
+      version: [3.29.6]
+      buildable: false
+      externals:
+      - spec: [email protected]
+        prefix: /opt/homebrew
+    gettext:
+      buildable: false
+      externals:
+      - spec: [email protected]
+        prefix: /opt/homebrew
+    graphviz:
+      buildable: false
+      externals:
+      - spec: [email protected]
+        prefix: /opt/homebrew
+    libtool:
+      buildable: false
+      externals:
+      - spec: [email protected]
+        prefix: /opt/homebrew
+    libx11:
+      buildable: false
+      externals:
+      - spec: [email protected]
+        prefix: /opt/homebrew
+    llvm:
+      version: [18.1.8]
+      buildable: false
+      externals:
+      - spec: [email protected]
+        prefix: /opt/homebrew/opt/llvm
+    m4:
+      buildable: false
+      externals:
+      - spec: [email protected]
+        prefix: /opt/homebrew/opt/m4
+    perl:
+      buildable: false
+      externals:
+      - spec: [email protected]~cpanm+opcode+open+shared+threads
+        prefix: /usr
+    pkg-config:
+      buildable: false
+      externals:
+      - spec: [email protected]_3
+        prefix: /opt/homebrew
+    python:
+      buildable: false
+      externals:
+      - spec: [email protected]+bz2+crypt+ctypes+dbm+lzma+nis+pyexpat~pythoncmd+readline+sqlite3+ssl~tkinter+uuid+zlib
+        prefix: /opt/homebrew/opt/python
+    tar:
+      buildable: false
+      externals:
+      - spec: [email protected]
+        prefix: /usr
+    readline:
+      buildable: false
+      externals:
+      - spec: [email protected]
+        prefix: /opt/homebrew
+    unzip:
+      buildable: false
+      externals:
+      - spec: [email protected]
+        prefix: /usr
+    zlib:
+      buildable: false
+      externals:
+      - spec: [email protected]
+        prefix: /opt/homebrew
+
+ # The "::" removes all found/known compilers from Spack except for these.
+  compilers::
+  - compiler:
+      spec: clang@=18.1.8
+      paths:
+        cc: /opt/homebrew/opt/llvm/bin/clang
+        cxx: /opt/homebrew/opt/llvm/bin/clang++
+        f77: /opt/homebrew/bin/gfortran-14
+        fc: /opt/homebrew/bin/gfortran-14
+      flags: {}
+      operating_system: sonoma
+      target: aarch64
+      modules: []
+      environment: {}
+      extra_rpaths:
+      - /opt/homebrew/lib/gcc/14