From 91493dfd8a7c9381487c4910520d314f92aacd2d Mon Sep 17 00:00:00 2001
From: Daniel Fullmer <danielrf12@gmail.com>
Date: Tue, 20 Oct 2020 22:09:41 -0700
Subject: [PATCH] rpcsvc-proto: fix cross-compilation

Tested pkgsCross.armv7l-hf-multiplatform.rpvscv-proto
---
 pkgs/tools/misc/rpcsvc-proto/default.nix | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/pkgs/tools/misc/rpcsvc-proto/default.nix b/pkgs/tools/misc/rpcsvc-proto/default.nix
index 6406b6b20e2c..12885172080c 100644
--- a/pkgs/tools/misc/rpcsvc-proto/default.nix
+++ b/pkgs/tools/misc/rpcsvc-proto/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, autoreconfHook }:
+{ stdenv, lib, fetchFromGitHub, autoreconfHook, buildPackages }:
 
 stdenv.mkDerivation rec {
   pname = "rpcsvc-proto";
@@ -13,8 +13,14 @@ stdenv.mkDerivation rec {
 
   outputs = [ "out" "man" ];
 
+  depsBuildBuild = [ buildPackages.stdenv.cc ];
   nativeBuildInputs = [ autoreconfHook ];
 
+  postPatch = lib.optionalString (stdenv.hostPlatform != stdenv.buildPlatform) ''
+    substituteInPlace rpcsvc/Makefile.am \
+      --replace '$(top_builddir)/rpcgen/rpcgen' '${buildPackages.rpcsvc-proto}/bin/rpcgen'
+  '';
+
   meta = with stdenv.lib; {
     homepage = "https://github.com/thkukuk/rpcsvc-proto";
     description = "This package contains rpcsvc proto.x files from glibc, which are missing in libtirpc";