From ff97a3df3b0fa33d666c49510e582323953d8af6 Mon Sep 17 00:00:00 2001
From: aleksana <me@aleksana.moe>
Date: Thu, 1 May 2025 23:41:20 +0800
Subject: [PATCH] cc-wrapper: add -m{,no-}strict-align and -mcmodel parameter

---
 pkgs/build-support/cc-wrapper/default.nix | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/pkgs/build-support/cc-wrapper/default.nix b/pkgs/build-support/cc-wrapper/default.nix
index 5304203e342c..22109523d312 100644
--- a/pkgs/build-support/cc-wrapper/default.nix
+++ b/pkgs/build-support/cc-wrapper/default.nix
@@ -332,7 +332,17 @@ let
     ++ optional (targetPlatform ? gcc.fpu) "-mfpu=${targetPlatform.gcc.fpu}"
     ++ optional (targetPlatform ? gcc.mode) "-mmode=${targetPlatform.gcc.mode}"
     ++ optional (targetPlatform ? gcc.thumb) "-m${thumb}"
-    ++ optional (tune != null) "-mtune=${tune}";
+    ++ optional (tune != null) "-mtune=${tune}"
+    ++
+      optional (targetPlatform ? gcc.strict-align)
+        "-m${optionalString (!targetPlatform.gcc.strict-align) "no-"}strict-align"
+    ++ optional (
+      targetPlatform ? gcc.cmodel
+      &&
+        # TODO: clang on powerpcspe also needs a condition: https://github.com/llvm/llvm-project/issues/71356
+        # https://releases.llvm.org/18.1.6/tools/clang/docs/ReleaseNotes.html#loongarch-support
+        ((targetPlatform.isLoongArch64 && isClang) -> versionAtLeast ccVersion "18.1")
+    ) "-mcmodel=${targetPlatform.gcc.cmodel}";
 
   defaultHardeningFlags = bintools.defaultHardeningFlags or [ ];