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-rw-r--r--pkgs/applications/science/misc/root/default.nix6
1 files changed, 4 insertions, 2 deletions
diff --git a/pkgs/applications/science/misc/root/default.nix b/pkgs/applications/science/misc/root/default.nix
index 57d9fc40ab50..e61cb557e123 100644
--- a/pkgs/applications/science/misc/root/default.nix
+++ b/pkgs/applications/science/misc/root/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, fetchpatch, cmake, mesa, gfortran
+{ stdenv, fetchurl, fetchpatch, cmake, pkgconfig, mesa, gfortran
 , libX11,libXpm, libXft, libXext, zlib }:
 
 stdenv.mkDerivation rec {
@@ -10,7 +10,9 @@ stdenv.mkDerivation rec {
     sha256 = "1bkiggcyya39a794d3d2rzzmmkbdymf86hbqhh0l1pl4f38xvp6i";
   };
 
-  buildInputs = [ cmake gfortran mesa libX11 libXpm libXft libXext zlib ];
+  buildInputs = [ cmake pkgconfig gfortran mesa libX11 libXpm libXft libXext zlib ];
+
+  NIX_CFLAGS_LINK = "-lX11";
 
   # CMAKE_INSTALL_RPATH_USE_LINK_PATH is set to FALSE in
   # <rootsrc>/cmake/modules/RootBuildOptions.cmake.