From 2fe11f12fb551385875385bf98707316019228f4 Mon Sep 17 00:00:00 2001
From: Piotr Bogdan <ppbogdan@gmail.com>
Date: Fri, 4 Jan 2019 19:33:50 +0000
Subject: [PATCH] gdmap: link with libm explicitly

---
 pkgs/tools/system/gdmap/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/tools/system/gdmap/default.nix b/pkgs/tools/system/gdmap/default.nix
index 72938216b0a..0c254bb2854 100644
--- a/pkgs/tools/system/gdmap/default.nix
+++ b/pkgs/tools/system/gdmap/default.nix
@@ -15,6 +15,10 @@ stdenv.mkDerivation rec {
 
   hardeningDisable = [ "format" ];
 
+  NIX_LDFLAGS = [
+    "-lm"
+  ];
+
   meta = with stdenv.lib; {
     homepage = http://gdmap.sourceforge.net;
     description = "Recursive rectangle map of disk usage";