From e9d434cd0354f3d9da4b310c57dfbacfb9735219 Mon Sep 17 00:00:00 2001
From: Rick van Schijndel <rol3517@gmail.com>
Date: Mon, 8 May 2023 19:09:57 +0200
Subject: [PATCH] gnuplot: fix cross-compilation by disabling docs and demos

Now we can cross-build rtl_433 completely!
---
 pkgs/tools/graphics/gnuplot/default.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/tools/graphics/gnuplot/default.nix b/pkgs/tools/graphics/gnuplot/default.nix
index c95ec79534eb..2334aa6fdae0 100644
--- a/pkgs/tools/graphics/gnuplot/default.nix
+++ b/pkgs/tools/graphics/gnuplot/default.nix
@@ -68,6 +68,12 @@ in
        --run '. ${./set-gdfontpath-from-fontconfig.sh}'
   '';
 
+  # When cross-compiling, don't build docs and demos.
+  # Inspiration taken from https://sourceforge.net/p/gnuplot/gnuplot-main/merge-requests/10/
+  makeFlags = lib.optionals (!stdenv.buildPlatform.canExecute stdenv.hostPlatform) [
+    "-C src"
+  ];
+
   enableParallelBuilding = true;
 
   meta = with lib; {