From a157fc89a052bc672d1441d429f497faa58782b4 Mon Sep 17 00:00:00 2001
From: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>
Date: Wed, 21 Apr 2021 20:22:33 -0400
Subject: [PATCH] freeimage: fix for darwin

---
 pkgs/development/libraries/freeimage/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/development/libraries/freeimage/default.nix b/pkgs/development/libraries/freeimage/default.nix
index 5714131416d6..b50783e2719e 100644
--- a/pkgs/development/libraries/freeimage/default.nix
+++ b/pkgs/development/libraries/freeimage/default.nix
@@ -29,6 +29,10 @@ stdenv.mkDerivation {
 
   preInstall = ''
     mkdir -p $INCDIR $INSTALLDIR
+  ''
+  # Workaround for Makefiles.osx not using ?=
+  + lib.optionalString stdenv.isDarwin ''
+    makeFlagsArray+=( "INCDIR=$INCDIR" "INSTALLDIR=$INSTALLDIR" )
   '';
 
   postInstall = lib.optionalString (!stdenv.isDarwin) ''