From 5280cdee8d6c3ec3155150c703ccd50d038b2cdb Mon Sep 17 00:00:00 2001
From: Bernardo Meurer <bernardo@meurer.org>
Date: Mon, 30 Aug 2021 17:25:19 -0700
Subject: [PATCH] linuxPackages.zfs: fix m4 script when not using GCC

---
 pkgs/os-specific/linux/zfs/default.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/os-specific/linux/zfs/default.nix b/pkgs/os-specific/linux/zfs/default.nix
index 517e6036e780..d99b72c65b12 100644
--- a/pkgs/os-specific/linux/zfs/default.nix
+++ b/pkgs/os-specific/linux/zfs/default.nix
@@ -47,6 +47,11 @@ let
 
       postPatch = optionalString buildKernel ''
         patchShebangs scripts
+
+        # https://github.com/openzfs/zfs/issues/10107
+        substituteInPlace ./config/kernel.m4 \
+          --replace "make modules" "make CC=$CC modules"
+
         # The arrays must remain the same length, so we repeat a flag that is
         # already part of the command and therefore has no effect.
         substituteInPlace ./module/os/linux/zfs/zfs_ctldir.c \