From 2f9d125d5820ead05c19aa2eeb1a695451958b64 Mon Sep 17 00:00:00 2001
From: Sergei Trofimovich <slyich@gmail.com>
Date: Wed, 8 Jun 2022 09:03:34 +0100
Subject: [PATCH] gpredict: pull upstream fix for -fno-common toolchains

Without the change build fails on upstream gcc-10 as:

    ld: save-pass.o:src/qth-data.h:36: multiple definition of
       `qth_data_type'; gtk-azel-plot.o:src/qth-data.h:36: first defined here
---
 .../science/astronomy/gpredict/default.nix           | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/pkgs/applications/science/astronomy/gpredict/default.nix b/pkgs/applications/science/astronomy/gpredict/default.nix
index 3f82ff7b52a8..1fd2d4ac2adc 100644
--- a/pkgs/applications/science/astronomy/gpredict/default.nix
+++ b/pkgs/applications/science/astronomy/gpredict/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl, pkg-config, intltool
+{ lib, stdenv, fetchurl, fetchpatch, pkg-config, intltool
 , gtk3, glib, curl, goocanvas2, gpsd
 , hamlib, wrapGAppsHook
 }:
@@ -14,6 +14,16 @@ in stdenv.mkDerivation {
     sha256 = "0hwf97kng1zy8rxyglw04x89p0bg07zq30hgghm20yxiw2xc8ng7";
   };
 
+  patches = [
+    # Pull upstream fix for -fno-common toolchains:
+    #   https://github.com/csete/gpredict/issues/195
+    (fetchpatch {
+      name = "fno-common.patch";
+      url = "https://github.com/csete/gpredict/commit/c565bb3d48777bfe17114b5d01cd81150521f056.patch";
+      sha256 = "1jhy9hpqlachq32bkij60q3dxkgi1kkr80rm29jjxqpmambf406a";
+    })
+  ];
+
   nativeBuildInputs = [ pkg-config intltool wrapGAppsHook ];
   buildInputs = [ curl glib gtk3 goocanvas2 gpsd hamlib ];