pkg-config: fix occasional install problem

Signed-off-by: Luka Perkov <luka@openwrt.org>

SVN-Revision: 38886

tools/pkg-config/Makefile

@@ -1,5 +1,5 @@
 # 
-# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2006-2013 OpenWrt.org
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.

tools/pkg-config/patches/001-fix-package-rebuild.patch

@@ -0,0 +1,22 @@
+--- a/Makefile.am
++++ b/Makefile.am
+@@ -39,7 +39,7 @@
+ if HOST_TOOL
+ host_tool = $(host)-pkg-config$(EXEEXT)
+ install-exec-hook:
+-	cd $(DESTDIR)$(bindir) && $(LN) pkg-config$(EXEEXT) $(host_tool)
++	cd $(DESTDIR)$(bindir) && $(LN) -f pkg-config$(EXEEXT) $(host_tool)
+ uninstall-hook:
+ 	cd $(DESTDIR)$(bindir) && rm -f $(host_tool)
+ endif
+--- a/Makefile.in
++++ b/Makefile.in
+@@ -1093,7 +1093,7 @@
+ 	uninstall-man1
+ 
+ @HOST_TOOL_TRUE@install-exec-hook:
+-@HOST_TOOL_TRUE@	cd $(DESTDIR)$(bindir) && $(LN) pkg-config$(EXEEXT) $(host_tool)
++@HOST_TOOL_TRUE@	cd $(DESTDIR)$(bindir) && $(LN) -f pkg-config$(EXEEXT) $(host_tool)
+ @HOST_TOOL_TRUE@uninstall-hook:
+ @HOST_TOOL_TRUE@	cd $(DESTDIR)$(bindir) && rm -f $(host_tool)
+