From 2a92f4bf557f3733dbc06c5643a37d6843b3e32a Mon Sep 17 00:00:00 2001
From: Christian Prochaska <christian.prochaska@genode-labs.com>
Date: Wed, 18 May 2016 14:40:45 +0200
Subject: [PATCH] tool_chain: use 'pkg-config' for library checks

Fixes #1975
---
 tool/tool_chain | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/tool/tool_chain b/tool/tool_chain
index 2cd94c061..d4748702b 100755
--- a/tool/tool_chain
+++ b/tool/tool_chain
@@ -126,11 +126,17 @@ endif
 AUTOCONFINST_OK = $(call check_nonempty_f,$(AUTOCONF),\
                     Need to have 'autoconf-$(AUTOCONF_VERSION)' installed.)
 
+#
+# Check if 'pkg-config' is installed
+#
+PKG_CONFIG_OK = $(call check_nonempty_f,$(shell which pkg-config),\
+                Need to have 'pkg-config' installed.)
+
 #
 # Check if 'libncurses' is installed
 #
 CURSES_OK = $(call check_equal_f,\
-              $(shell $(LD) -lncurses -e0 -o /tmp/a.out && echo ok),ok,\
+              $(shell pkg-config --exists ncurses && echo ok),ok,\
               Need to have 'libncurses' installed.)
 
 #
@@ -161,11 +167,11 @@ GPG_OK = $(call check_nonempty_f,$(shell which gpg),\
 # Check if 'libexpat' is installed
 #
 EXPAT_OK = $(call check_equal_f,\
-             $(shell $(LD) -lexpat -e0 -o /tmp/a.out && echo ok),ok,\
+             $(shell pkg-config --exists expat && echo ok),ok,\
              Need to have 'libexpat' installed.)
 
 
-TOOLS_OK = $(AUTOCONF_OK) $(AUTOCONFINST_OK) $(CURSES_OK) \
+TOOLS_OK = $(AUTOCONF_OK) $(AUTOCONFINST_OK) $(PKG_CONFIG_OK) $(CURSES_OK) \
            $(TEXINFO_OK) $(WGET_OK) $(AUTOGEN_OK) $(GPG_OK) $(EXPAT_OK)
 
 ifneq ($(strip $(TOOLS_OK)),)