From 76f5cef359d52f1efdf067081af2911249248800 Mon Sep 17 00:00:00 2001
From: Marius Bakke <mbakke@fastmail.com>
Date: Fri, 3 Apr 2020 19:07:22 +0200
Subject: gnu: libfive: Fix build failure.

* gnu/packages/engineering.scm (libfive)[arguments]: Prepend to
CPLUS_INCLUDE_PATH instead of overriding it.
---
 gnu/packages/engineering.scm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'gnu/packages/engineering.scm')

diff --git a/gnu/packages/engineering.scm b/gnu/packages/engineering.scm
index 55af90bc82..5854249bb1 100644
--- a/gnu/packages/engineering.scm
+++ b/gnu/packages/engineering.scm
@@ -769,7 +769,8 @@ fonts to gEDA.")
              (lambda* (#:key inputs #:allow-other-keys)
                (setenv "CPLUS_INCLUDE_PATH"
                        (string-append (assoc-ref inputs "catch")
-                                      "/include/catch"))
+                                      "/include/catch:"
+                                      (or (getenv "CPLUS_INCLUDE_PATH") "")))
                #t)))))
       (native-inputs
        `(("pkg-config" ,pkg-config)))
-- 
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