From 4922268077d9485a69fa836fe170e3497b5455fa Mon Sep 17 00:00:00 2001
From: Michael Raskin <7c6f434c@mail.ru>
Date: Sun, 27 May 2018 22:41:06 +0200
Subject: [PATCH] libftdi1: fix build when docs are enabled

---
 pkgs/development/libraries/libftdi/1.x.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/development/libraries/libftdi/1.x.nix b/pkgs/development/libraries/libftdi/1.x.nix
index d54b05b1c828..c6deb1fc9291 100644
--- a/pkgs/development/libraries/libftdi/1.x.nix
+++ b/pkgs/development/libraries/libftdi/1.x.nix
@@ -22,6 +22,10 @@ stdenv.mkDerivation rec {
     ++ optionals pythonSupport [ python swig ]
     ++ optionals docSupport [ doxygen ];
 
+  preBuild = stdenv.lib.optionalString docSupport ''
+    make doc_i
+  '';
+
   propagatedBuildInputs = [ libusb1 ];
 
   postInstall = ''