From 9fab349ef58040ac5cb7db3c291d0b6cfc6cdffe Mon Sep 17 00:00:00 2001
From: Moritz Ulrich <moritz@tarn-vedra.de>
Date: Wed, 16 Aug 2017 10:25:02 +0200
Subject: [PATCH] optipng: Workaround for issue 28106.

---
 pkgs/tools/graphics/optipng/default.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/tools/graphics/optipng/default.nix b/pkgs/tools/graphics/optipng/default.nix
index 471e8ee8df47..f9b82a38344e 100644
--- a/pkgs/tools/graphics/optipng/default.nix
+++ b/pkgs/tools/graphics/optipng/default.nix
@@ -17,6 +17,12 @@ stdenv.mkDerivation rec {
   buildInputs = [ libpng ];
 
   LDFLAGS = optional static "-static";
+  # Workaround for crash in cexcept.h. See
+  # https://github.com/NixOS/nixpkgs/issues/28106
+  preConfigure = ''
+    export LD=$CC
+  '';
+
   configureFlags = [
     "--with-system-zlib"
     "--with-system-libpng"