--- /dev/null
+From e994e67a6a5c4722bdc8140528a4dd258c785402 Mon Sep 17 00:00:00 2001
+From: Sebastian Pipping <sebastian@pipping.org>
+Date: Wed, 18 Jan 2017 18:45:11 +0100
+Subject: [PATCH] Respect custom CFLAGS/LDFLAGS
+
+Based on spnavcfg-0.2.1-custom-flags.patch
+---
+ Makefile.in | 4 ++--
+ configure | 13 +++++++++++++
+ 2 files changed, 15 insertions(+), 2 deletions(-)
+
+diff --git a/Makefile.in b/Makefile.in
+index 06f23a6..296dd5d 100644
+--- a/Makefile.in
++++ b/Makefile.in
+@@ -7,8 +7,8 @@ warn = -Wall
+ CC = gcc
+ SED = sed
+ INSTALL = install
+-CFLAGS = -pedantic $(warn) $(dbg) $(opt) `pkg-config --cflags gtk+-2.0 gmodule-export-2.0`
+-LDFLAGS = `pkg-config --libs gtk+-2.0 gmodule-export-2.0` -lX11
++CFLAGS = $(user_cflags) `pkg-config --cflags gtk+-2.0 gmodule-export-2.0`
++LDFLAGS = $(user_ldflags) `pkg-config --libs gtk+-2.0 gmodule-export-2.0` -lX11
+
+ $(bin): $(obj)
+ $(CC) -o $@ $(obj) $(LDFLAGS)
+diff --git a/configure b/configure
+index e211d92..0fed776 100755
+--- a/configure
++++ b/configure
+@@ -43,6 +43,12 @@ done
+ echo " prefix: $PREFIX"
+ echo " optimize for speed: $OPT"
+ echo " include debugging symbols: $DBG"
++if [ -n "$CFLAGS" ]; then
++ echo " cflags: $CFLAGS"
++fi
++if [ -n "$LDFLAGS" ]; then
++ echo " ldflags: $LDFLAGS"
++fi
+ echo
+
+ # create Makefile
+@@ -58,6 +64,13 @@ if [ "$OPT" = 'yes' ]; then
+ echo 'opt = -O3' >>Makefile
+ fi
+
++if [ -n "$CFLAGS" ]; then
++ echo "user_cflags = $CFLAGS" >>Makefile
++fi
++if [ -n "$LDFLAGS" ]; then
++ echo "user_ldflags = $LDFLAGS" >>Makefile
++fi
++
+ cat "$srcdir/Makefile.in" >>Makefile
+
+ echo ''
+--
+2.11.0
+
--- /dev/null
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+EAPI="5"
+
+inherit eutils toolchain-funcs
+
+DESCRIPTION="GTK-based GUI to configure a space navigator device"
+HOMEPAGE="http://spacenav.sourceforge.net/"
+SRC_URI="mirror://sourceforge/project/spacenav/spacenavd%20config%20gui/${PN}%20${PV}/${P}.tar.gz"
+
+LICENSE="GPL-3"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE=""
+
+COMMON_DEPEND="x11-libs/gtk+:2"
+DEPEND="${COMMON_DEPEND}
+ virtual/pkgconfig"
+RDEPEND="${COMMON_DEPEND}
+ app-misc/spacenavd[X]"
+
+src_prepare() {
+ epatch "${FILESDIR}"/${P}-custom-flags.patch
+}
+
+src_compile() {
+ emake CC=$(tc-getCC) || die "Make failed."
+}
+
+src_install() {
+ emake DESTDIR="${D}" install || die "Install failed"
+ dodoc README || die
+}