[bug#36477] [PATCH v2 41/61] gnu: doxygen: Fix cross-compilation.

[Mathieu Othacehe]

* gnu/packages/documentation.scm (doxygen)[arguments]: Force cmake to use
iconv.h from cross-libc.
---
 gnu/packages/documentation.scm | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/documentation.scm b/gnu/packages/documentation.scm
index 19c42b00eb..eda8ca3368 100644
--- a/gnu/packages/documentation.scm
+++ b/gnu/packages/documentation.scm
@@ -7,6 +7,7 @@
 ;;; Copyright © 2017 Kei Kebreau <address@hidden>
 ;;; Copyright © 2017 Efraim Flashner <address@hidden>
 ;;; Copyright © 2018 Tobias Geerinckx-Rice <address@hidden>
+;;; Copyright © 2019 Mathieu Othacehe <address@hidden>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -31,6 +32,7 @@
   #:use-module (guix build-system cmake)
   #:use-module (gnu packages)
   #:use-module (gnu packages autotools)
+  #:use-module (gnu packages base)
   #:use-module (gnu packages bash)
   #:use-module (gnu packages python)
   #:use-module (gnu packages bison)
@@ -145,7 +147,15 @@ markup) can be customized and extended by the user.")
     (inputs
      `(("bash" ,bash-minimal)))
     (arguments
-     `(#:test-target "tests"
+     ;; Force cmake to use iconv header from cross-libc instead of the one
+     ;; from native libc.
+     `(,@(if (%current-target-system)
+             '(#:configure-flags
+               (list (string-append "-DICONV_INCLUDE_DIR="
+                                    (assoc-ref %build-inputs "cross-libc")
+                                    "/include")))
+             '())
+       #:test-target "tests"
        #:phases (modify-phases %standard-phases
                   (add-before 'configure 'patch-sh
                               (lambda* (#:key inputs #:allow-other-keys)
-- 
2.17.1