From 19c3957ee4ee113681c95c17a4857b9db69d9764 Mon Sep 17 00:00:00 2001
From: QC <qball@gmpclient.org>
Date: Sun, 20 Jan 2013 11:13:20 +0100
Subject: [PATCH] Check pkg-config result before compiling.

---
 config.mk | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/config.mk b/config.mk
index ec8fa91..ea3c3b3 100644
--- a/config.mk
+++ b/config.mk
@@ -19,9 +19,19 @@ XINERAMAFLAGS = -DXINERAMA
 # inih flags
 INIFLAGS = -DINI_ALLOW_MULTILINE=0
 
+
+PKG_CONFIG=$(shell which pkg-config)
+ifeq (${PKG_CONFIG}, ${EMPTY})
+    $(error "Failed to find pkg-config, please make sure it is installed)
+endif
+
 # includes and libs
-INCS = $(shell pkg-config --cflags dbus-1 libxdg-basedir x11 freetype2 xext xft xscrnsaver)
-LIBS = -lm -L${X11LIB} -lXss ${XINERAMALIBS} $(shell pkg-config --libs dbus-1 libxdg-basedir x11 freetype2 xext xft xscrnsaver)
+INCS = $(shell ${PKG_CONFIG} --cflags dbus-1 libxdg-basedir x11 freetype2 xext xft xscrnsaver)
+LIBS = -lm -L${X11LIB} -lXss ${XINERAMALIBS} $(shell ${PKG_CONFIG} --libs dbus-1 libxdg-basedir x11 freetype2 xext xft xscrnsaver)
+
+ifeq (${INCS}, ${EMPTY})
+    $(error Failed to find one ore move required dependencies:  dbus-1 libxdg-basedir x11 freetype2 xext xft xscrnsaver)
+endif
 
 # flags
 CPPFLAGS += -D_BSD_SOURCE -DVERSION=\"${VERSION}\" ${XINERAMAFLAGS} ${INIFLAGS}