From 4f5830cf9e2bc9eaae38a9adf9e515ecaa4b29cb Mon Sep 17 00:00:00 2001
From: Maximilian Bosch <maximilian@mbosch.me>
Date: Sat, 25 Jan 2020 12:15:03 +0100
Subject: [PATCH] mono4: fix build w/glibc-2.30

---
 pkgs/development/compilers/mono/4.nix             |  1 +
 pkgs/development/compilers/mono/generic.nix       |  3 ++-
 pkgs/development/compilers/mono/mono4-glibc.patch | 12 ++++++++++++
 3 files changed, 15 insertions(+), 1 deletion(-)
 create mode 100644 pkgs/development/compilers/mono/mono4-glibc.patch

diff --git a/pkgs/development/compilers/mono/4.nix b/pkgs/development/compilers/mono/4.nix
index cb6edb2a546..02c6177c9df 100644
--- a/pkgs/development/compilers/mono/4.nix
+++ b/pkgs/development/compilers/mono/4.nix
@@ -5,4 +5,5 @@ callPackage ./generic.nix ({
   version = "4.8.1.0";
   sha256 = "1vyvp2g28ihcgxgxr8nhzyzdmzicsh5djzk8dk1hj5p5f2k3ijqq";
   enableParallelBuilding = false; # #32386, https://hydra.nixos.org/build/65600645
+  extraPatches = [ ./mono4-glibc.patch ];
 })
diff --git a/pkgs/development/compilers/mono/generic.nix b/pkgs/development/compilers/mono/generic.nix
index e40d07772dd..61d298543d0 100644
--- a/pkgs/development/compilers/mono/generic.nix
+++ b/pkgs/development/compilers/mono/generic.nix
@@ -1,6 +1,7 @@
 { stdenv, fetchurl, bison, pkgconfig, glib, gettext, perl, libgdiplus, libX11, callPackage, ncurses, zlib, withLLVM ? false, cacert, Foundation, libobjc, python, version, sha256, autoconf, libtool, automake, cmake, which
 , enableParallelBuilding ? true
 , srcArchiveSuffix ? "tar.bz2"
+, extraPatches ? []
 }:
 
 let
@@ -42,7 +43,7 @@ stdenv.mkDerivation rec {
 
   # We want pkg-config to take priority over the dlls in the Mono framework and the GAC
   # because we control pkg-config
-  patches = [ ./pkgconfig-before-gac.patch ];
+  patches = [ ./pkgconfig-before-gac.patch ] ++ extraPatches;
 
   # Patch all the necessary scripts. Also, if we're using LLVM, we fix the default
   # LLVM path to point into the Mono LLVM build, since it's private anyway.
diff --git a/pkgs/development/compilers/mono/mono4-glibc.patch b/pkgs/development/compilers/mono/mono4-glibc.patch
new file mode 100644
index 00000000000..07d5f03f90b
--- /dev/null
+++ b/pkgs/development/compilers/mono/mono4-glibc.patch
@@ -0,0 +1,12 @@
+diff --git a/mono/io-layer/processes.c b/mono/io-layer/processes.c
+index 53c271a4..84bd3252 100644
+--- a/mono/io-layer/processes.c
++++ b/mono/io-layer/processes.c
+@@ -19,6 +19,7 @@
+ #include <errno.h>
+ #include <sys/types.h>
+ #include <sys/stat.h>
++#include <sys/sysmacros.h>
+ #include <unistd.h>
+ #ifdef HAVE_SIGNAL_H
+ #include <signal.h>