From 294f158558279bb25ad64b08ffb74281ba9da78d Mon Sep 17 00:00:00 2001
From: Jan Nieuwenhuizen <janneke@gnu.org>
Date: Sun, 27 Mar 2016 16:00:36 +0200
Subject: [PATCH 1/9] gnu: gcc: use CPATH, fixes cross builds.

* gnu/packages/gcc (gcc): Use CPATH instead of C_INCLUDE_PATH.  Fixes usage of
  native glibc headers when cross-compiling.
---
 gnu/packages/gcc.scm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gnu/packages/gcc.scm b/gnu/packages/gcc.scm
index bdcb275..fc0ef6e 100644
--- a/gnu/packages/gcc.scm
+++ b/gnu/packages/gcc.scm
@@ -311,7 +311,7 @@ where the OS part is overloaded to denote a specific ABI---into GCC
        ;; treated as "system headers" (headers exempt from warnings) just like
        ;; the typical /usr/include headers on an FHS system.
        (list (search-path-specification
-              (variable "C_INCLUDE_PATH")
+              (variable "CPATH")
               (files '("include")))
              (search-path-specification
               (variable "CPLUS_INCLUDE_PATH")
-- 
2.7.3