From 59a10485550910ab6b5e61dbd1e53fe4dfae62ca Mon Sep 17 00:00:00 2001
From: Andreas Enge <andreas@enge.fr>
Date: Fri, 19 Sep 2025 21:13:42 +0200
Subject: [PATCH] gnu: llvm-3.5: Remove inheritance from llvm-3.7.

* gnu/packages/llvm.scm (llvm-3.5)[inherit]: Replace llvm-3.7 by llvm-6.
[outputs, arguments]: Copy-paste from llvm-3.7.

Change-Id: Ic1743867ad5eec6fd6d3a806ddc3ba9e3539ab11
---
 gnu/packages/llvm.scm | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/gnu/packages/llvm.scm b/gnu/packages/llvm.scm
index 7a790e41feefce558a665eb6dffefb6fd90d6a43..37ca991418908306d30f0c9213d748d1a3217e6a 100644
--- a/gnu/packages/llvm.scm
+++ b/gnu/packages/llvm.scm
@@ -1109,7 +1109,7 @@ Library.")
             (delete 'install-opt-viewer)))))))
 
 (define-public llvm-3.5
-  (package (inherit llvm-3.7)
+  (package (inherit llvm-6)
     (version "3.5.2")
     (source
      (origin
@@ -1119,7 +1119,21 @@ Library.")
         (search-patches "llvm-3.5-fix-clang-build-with-gcc5.patch"))
        (sha256
         (base32
-         "0xf5q17kkxsrm2gsi93h4pwlv663kji73r2g4asb97klsmb626a4"))))))
+         "0xf5q17kkxsrm2gsi93h4pwlv663kji73r2g4asb97klsmb626a4"))))
+    (outputs '("out"))
+    (arguments
+     (substitute-keyword-arguments (package-arguments llvm-6)
+       ((#:phases phases)
+        #~(modify-phases #$phases
+            (add-before 'build 'shared-lib-workaround
+              ;; Even with CMAKE_SKIP_BUILD_RPATH=FALSE, llvm-tblgen
+              ;; doesn't seem to get the correct rpath to be able to run
+              ;; from the build directory.  Set LD_LIBRARY_PATH as a
+              ;; workaround.
+              (lambda _
+                (setenv "LD_LIBRARY_PATH"
+                        (string-append (getcwd) "/lib"))))
+            (delete 'install-opt-viewer)))))))
 
 (define-public llvm-16
   (make-llvm "16.0.6"))