From 39f7ed5412a65aa32135a22acbd9e2bcb208165a Mon Sep 17 00:00:00 2001
From: David Rosca <david.rosca@amd.com>
Date: Sun, 8 Sep 2024 10:45:30 +0200
Subject: [PATCH] meson/megadriver: Add megadriver_libdir argument

To be able to install symlinks to megadriver in different directory.

Cc: mesa-stable
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31079>
---
 bin/install_megadrivers.py | 29 ++++++++++++++++++++---------
 1 file changed, 20 insertions(+), 9 deletions(-)

diff --git a/bin/install_megadrivers.py b/bin/install_megadrivers.py
index 4dc62391582..216f6999feb 100644
--- a/bin/install_megadrivers.py
+++ b/bin/install_megadrivers.py
@@ -26,21 +26,29 @@ import argparse
 import os
 
 
+def resolve_libdir(libdir):
+    if os.path.isabs(libdir):
+        destdir = os.environ.get('DESTDIR')
+        if destdir:
+            return os.path.join(destdir, libdir[1:])
+        else:
+            return libdir
+    return os.path.join(os.environ['MESON_INSTALL_DESTDIR_PREFIX'], libdir)
+
+
 def main():
     parser = argparse.ArgumentParser()
     parser.add_argument('megadriver')
     parser.add_argument('libdir')
     parser.add_argument('drivers', nargs='+')
+    parser.add_argument('--megadriver_libdir')
     args = parser.parse_args()
 
-    if os.path.isabs(args.libdir):
-        destdir = os.environ.get('DESTDIR')
-        if destdir:
-            to = os.path.join(destdir, args.libdir[1:])
-        else:
-            to = args.libdir
+    to = resolve_libdir(args.libdir)
+    if args.megadriver_libdir:
+        md_to = resolve_libdir(args.megadriver_libdir)
     else:
-        to = os.path.join(os.environ['MESON_INSTALL_DESTDIR_PREFIX'], args.libdir)
+        md_to = to
 
     basename = os.path.basename(args.megadriver)
     master = os.path.join(to, basename)
@@ -55,8 +63,11 @@ def main():
 
         if os.path.lexists(abs_driver):
             os.unlink(abs_driver)
-        print(f'Installing symlink pointing to {basename} to {abs_driver}')
-        os.symlink(basename, abs_driver)
+
+        symlink = os.path.relpath(os.path.join(md_to, basename), start=to)
+
+        print(f'Installing symlink pointing to {symlink} to {abs_driver}')
+        os.symlink(symlink, abs_driver)
 
         try:
             ret = os.getcwd()