ADD: compiler as external package (x86_64)

env/sles15/x86_64/admin/unstable/spack.yaml

@@ -5,6 +5,14 @@ spack:
     install_tree:
       root: $spack/opt/spack/unstable
   definitions:
+  - compilers:
+    - gcc@7.5.0
+    - gcc@=12.3
+    - intel-oneapi-compilers@=2024.1.0
+    - intel-oneapi-compilers@=2022.1.0
+    - gcc@=13.2.0 arch=linux-sles15-x86_64
+    - nvhpc@23.9
+    - cce@17.0.0
   - gcc_7.5.0:
     - visit@3.3.3/fo37wwb
   - gcc_12.3:
@@ -48,6 +56,9 @@ spack:
               SLURM_MPI_TYPE: 'pmix'
               OMPI_MCA_mtl_ofi_disable_hmem: 'true'
   specs:
+  - matrix:
+    - [$compilers]
+    - ['%gcc@7.5.0']
   - matrix:
     - [$gcc_7.5.0]
     - ['%gcc@7.5.0']