Add the ATfL package

repos/spack_repo/builtin/packages/acfl/detection_test.yaml

@@ -81,3 +81,22 @@ paths:
       echo "InstalledDir: /usr/bin"
   platforms: [linux]
   results: []
+
+- layout: # does not detect ATfL
+  - executables:
+    - "bin/armclang"
+    - "bin/armclang++"
+    script: |
+      echo "Arm Toolchain for Linux 20.1 clang version 20.1.0"
+      echo "Target: aarch64--linux-gnu"
+      echo "Thread model: posix"
+      echo "InstalledDir: /opt/arm/arm-toolchain-for-linux-20.1/bin"
+  - executables:
+    - "bin/armflang"
+    script: |
+      echo "Arm Toolchain for Linux 20.1 flang version 20.1.0"
+      echo "Target: aarch64--linux-gnu"
+      echo "Thread model: posix"
+      echo "InstalledDir: /opt/arm/arm-toolchain-for-linux-20.1/bin"
+  platforms: [linux]
+  results: []

repos/spack_repo/builtin/packages/armpl_gcc/package.py

@@ -403,6 +403,7 @@ class ArmplGcc(Package):
 
     conflicts("%msvc", msg="Not compatible with MSVC compiler.")
 
+    variant("examples", default=True, description="Build and run ArmPL examples after install")
     variant("ilp64", default=False, description="use ilp64 specific Armpl library")
     variant("shared", default=True, description="enable shared libs")
     variant(
@@ -417,11 +418,11 @@ class ArmplGcc(Package):
     provides("lapack")
     provides("fftw-api@3")
 
-    depends_on("c", type="build")
-    depends_on("fortran", type="build")
-    requires("^[virtuals=c,fortran] gcc", msg="armpl-gcc is only compatible with the GCC compiler")
-
-    depends_on("gmake", type="build")
+    with when("+examples"):
+        depends_on("c", type="build")
+        depends_on("fortran", type="build")
+        depends_on("gmake", type="build")
+        requires("^[virtuals=c,fortran] gcc", msg="armpl-gcc examples require GCC toolchain")
 
     # Run the installer with the desired install directory
     def install(self, spec, prefix):
@@ -476,13 +477,16 @@ def blas_libs(self):
             recursive=True,
         )
 
-        # Link the same libraries as the gcc used for Arm PL
-        armpl_libs += find_libraries(
-            ["libgomp", "libm"],
-            root=self["gcc"].prefix,
-            shared=self.spec.satisfies("+shared"),
-            recursive=True,
-        )
+        # Link the same libraries as the gcc used for Arm PL, but only when
+        # building/running examples. Avoid injecting GCC runtimes by default
+        # to keep non-GCC toolchains (e.g., ATfL) conflict-free.
+        if self.spec.satisfies("+examples"):
+            armpl_libs += find_libraries(
+                ["libgomp", "libm"],
+                root=self["gcc"].prefix,
+                shared=self.spec.satisfies("+shared"),
+                recursive=True,
+            )
 
         return armpl_libs
 
@@ -520,7 +524,7 @@ def setup_run_environment(self, env: EnvironmentModifications) -> None:
         else:
             env.prepend_path("LD_LIBRARY_PATH", join_path(armpl_dir, "lib"))
 
-    @run_after("install")
+    @run_after("install", when="+examples")
     def check_install(self):
         armpl_dir = get_armpl_prefix(self.spec)
         suffix = get_armpl_suffix(self.spec)

repos/spack_repo/builtin/packages/atfl/detection_test.yaml

@@ -0,0 +1,53 @@
+paths:
+- layout:
+  - executables:
+    - "bin/armclang"
+    - "bin/armclang++"
+    script: |
+      echo "Arm Toolchain for Linux 20.1 clang version 20.1.0"
+      echo "Target: aarch64--linux-gnu"
+      echo "Thread model: posix"
+      echo "InstalledDir: /opt/arm/arm-toolchain-for-linux-20.1/bin"
+  - executables:
+    - "bin/armflang"
+    script: |
+      echo "Arm Toolchain for Linux 20.1 flang version 20.1.0"
+      echo "Target: aarch64--linux-gnu"
+      echo "Thread model: posix"
+      echo "InstalledDir: /opt/arm/arm-toolchain-for-linux-20.1/bin"
+  platforms: [linux]
+  results:
+  - spec: [email protected]
+    extra_attributes:
+      compilers:
+        c: ".*/bin/armclang$"
+        cxx: ".*/bin/armclang[+][+]$"
+        fortran: ".*/bin/armflang$"
+
+# Negative tests: ensure ATfL does not detect other compilers
+- layout: # does not detect upstream clang/LLVM
+  - executables:
+    - "bin/clang"
+    - "bin/clang++"
+    script: |
+      echo "clang version 20.1.0 (https://github.com/llvm/llvm-project abcdef)"
+      echo "Target: x86_64-unknown-linux-gnu"
+      echo "Thread model: posix"
+      echo "InstalledDir: /usr/bin"
+  platforms: [linux]
+  results: []
+
+- layout: # does not detect ACfL
+  - executables:
+    - "bin/armclang"
+    - "bin/armclang++"
+    - "bin/armflang"
+    script: |
+      echo "Arm C/C++/Fortran Compiler version 19.3.1 (build number 75) (based on LLVM 7.0.2)"
+      echo "Target: aarch64--linux-gnu"
+      echo "Thread model: posix"
+      echo "InstalledDir:"
+      echo "/opt/arm/arm-hpc-compiler-19.3.5_Generic-AArch64_RHEL-7_aarch64-linux/bin"
+  platforms: [linux]
+  results: []
+