From ef89cb4263e14887385ef8240b040be052c741c1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Sat, 31 Oct 2015 12:26:43 +0100
Subject: gnu: lablgtk: Build sequentially.

* gnu/packages/ocaml.scm (lablgtk)[arguments]: Add #:parallel-build? #f.
---
 gnu/packages/ocaml.scm | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/gnu/packages/ocaml.scm b/gnu/packages/ocaml.scm
index fc45805958..ee4e7830b6 100644
--- a/gnu/packages/ocaml.scm
+++ b/gnu/packages/ocaml.scm
@@ -460,6 +460,11 @@ provers.")
        ("librsvg" ,librsvg)))
     (arguments
      `(#:tests? #f ; no check target
+
+       ;; Occasionally we would get "Error: Unbound module GtkThread" when
+       ;; compiling 'gtkThInit.ml', with 'make -j'.  So build sequentially.
+       #:parallel-build? #f
+
        #:phases
          (modify-phases %standard-phases
            (replace 'install
-- 
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