Add (guix amd-gpu).

Moving these definitions to a separate module is necessary to avoid circular
references at the top-level among package modules.

* gnu/packages/rocm.scm (%default-amd-gpu-targets, current-amd-gpu-targets)
(current-amd-gpu-targets-string): Move to…
* guix/amd-gpu.scm: … here.  New file.
* Makefile.am (MODULES): Add it.

Merges guix/guix!7251

Change-Id: I60496fb4d81ea0445ec176add7afc388f6790bd3
Signed-off-by: Cayetano Santos <csantosb@inventati.org>

3 files changed, 50 insertions, 16 deletions

diff --git a/Makefile.am b/Makefile.am
index 546e3ed7585..1ef57af7a58 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,5 +1,5 @@
 # GNU Guix --- Functional package management for GNU
-# Copyright © 2012-2025 Ludovic Courtès <ludo@gnu.org>
+# Copyright © 2012-2026 Ludovic Courtès <ludo@gnu.org>
 # Copyright © 2013 Andreas Enge <andreas@enge.fr>
 # Copyright © 2015, 2017 Alex Kost <alezost@gmail.com>
 # Copyright © 2016, 2018 Mathieu Lirzin <mthl@gnu.org>
@@ -87,6 +87,7 @@ MODULES =					\
   guix/base64.scm				\
   guix/ci.scm					\
   guix/cpio.scm					\
+  guix/amd-gpu.scm				\
   guix/cpu.scm					\
   guix/deprecation.scm				\
   guix/docker.scm	   			\
diff --git a/gnu/packages/rocm.scm b/gnu/packages/rocm.scm
index 6b5bc632ddf..1f2175ecc17 100644
--- a/gnu/packages/rocm.scm
+++ b/gnu/packages/rocm.scm
@@ -26,6 +26,7 @@
   #:use-module (guix utils)
   #:use-module (guix git-download)
   #:use-module (guix build-system cmake)
+  #:use-module (guix amd-gpu)
   #:use-module (gnu packages)
   #:use-module (gnu packages base)
   #:use-module (gnu packages boost)
@@ -53,9 +54,9 @@
   #:use-module (gnu packages xorg)
   #:use-module (gnu packages libffi)
   #:use-module (ice-9 match)
-  #:export (%default-amd-gpu-targets
-            current-amd-gpu-targets
-            current-amd-gpu-targets-string))
+  #:re-export (%default-amd-gpu-targets
+               current-amd-gpu-targets
+               current-amd-gpu-targets-string))
 
 ;; The components are tightly integrated and can only be upgraded as a unit. If
 ;; you want to upgrade ROCm, bump this version number and the version number in
@@ -328,18 +329,6 @@ CPUs to execute unmodified HIP code.  It is generic and does not assume a
 particular CPU vendor or architecture.")
       (license license:expat))))
 
-(define %default-amd-gpu-targets
-  '("gfx908" "gfx90a" "gfx942" "gfx1030" "gfx1100" "gfx1101" "gfx1200" "gfx1201"))
-
-(define-syntax-rule (current-amd-gpu-targets)
-  "Return the list of AMD GPU targets for this package, as a list of strings."
-  (or (assoc-ref (package-properties this-package) 'amd-gpu-targets)
-      %default-amd-gpu-targets))
-
-(define-syntax-rule (current-amd-gpu-targets-string)
-  "Return the list of AMD GPU targets for this package, as a string separated by \";\"."
-  (string-join (current-amd-gpu-targets) ";"))
-
 (define-public rocm-bandwidth-test
   (package
     (name "rocm-bandwidth-test")
diff --git a/guix/amd-gpu.scm b/guix/amd-gpu.scm
new file mode 100644
index 00000000000..d16fea2a053
--- /dev/null
+++ b/guix/amd-gpu.scm
@@ -0,0 +1,44 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2026 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2026 David Elsing <david.elsing@posteo.net>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (guix amd-gpu)
+  #:autoload (guix packages) (this-package package-properties)
+  #:export (%default-amd-gpu-targets
+            current-amd-gpu-targets
+            current-amd-gpu-targets-string))
+
+;;; Commentary:
+;;;
+;;; This module provides helpers for packages targeting AMD GPUs.
+;;;
+;;; Code:
+
+(define %default-amd-gpu-targets
+  '("gfx908" "gfx90a" "gfx942" "gfx1030" "gfx1100" "gfx1101" "gfx1200" "gfx1201"))
+
+(define-syntax-rule (current-amd-gpu-targets)
+  "Return the list of AMD GPU targets for this package, as a list of strings."
+  (or (assoc-ref (package-properties this-package) 'amd-gpu-targets)
+      %default-amd-gpu-targets))
+
+(define-syntax-rule (current-amd-gpu-targets-string)
+  "Return the list of AMD GPU targets for this package, as a string separated
+by \";\".  This is useful for build options like 'AMDGPU_TARGETS' in many
+CMake-based packages."
+  (string-join (current-amd-gpu-targets) ";"))