Subject: [bug#73287] [PATCH v4 1/3] gnu: Add embree-2.

From: James Smith <[email-masked]>
Date: Sat, 7 Dec 2024 20:48:30 -0700

* gnu/packages/graphics.scm: (embree-2): New variable.

Change-Id: I2b2143b4d93c402ba940d408280ef1b37ab552ea
---
 gnu/packages/graphics.scm | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/gnu/packages/graphics.scm b/gnu/packages/graphics.scm
index f33e9d3fcb..b1df26bca5 100644
--- a/gnu/packages/graphics.scm
+++ b/gnu/packages/graphics.scm
@@ -38,6 +38,7 @@
 ;;; Copyright © 2023 Eric Bavier <[email-masked]>
 ;;; Copyright © 2023, 2024 Artyom V. Poptsov <[email-masked]>
 ;;; Copyright © 2024 Ivan Vilata-i-Balaguer <[email-masked]>
+;;; Copyright © 2024 James Smith <[email-masked]>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -491,6 +492,30 @@ (define-public embree-3
                (base32
                 "1kcvz7g6j56anv9zjyd3gidxl46vipw0gg82lns12m45cd43iwxm"))))))
 
+(define-public embree-2
+  (package/inherit embree
+    (version "2.17.7")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference (url "https://github.com/RenderKit/embree")
+                           (commit (string-append "v" version))))
+       (file-name (git-file-name (package-name embree) version))
+       (sha256
+        (base32 "19v60zdfix33c772x6dzmhsarhafsns8qy7c2ysqr7a9j16whgql"))))
+    (arguments
+     (substitute-keyword-arguments (package-arguments embree)
+       ((#:configure-flags configure-flags)
+        #~(append (list "-DEMBREE_MAX_ISA=NONE" "-DEMBREE_TUTORIALS=OFF")
+              #$configure-flags))))
+    (inputs (modify-inputs (package-inputs embree)
+              (replace "tbb" tbb-2020)))
+    ;; Embree requires SSE2 support, so build only for x86-based architectures.
+    (supported-systems (list "i686-linux" "x86_64-linux"))
+    (description (string-append (package-description embree) "
+
+Please note that this version requires a processor with SSE2 support."))))
+
 (define-public openvdb
   (package
     (name "openvdb")

base-commit: bc630c5ebed27edd821ec363706f8b9cf1ee05cc
-- 
2.46.0