Fix paths in libffi.pc.in

(upstream git commit ad0d1d239afc7ad09203847793dcc020856d1035)

This unbreaks lua-lgi runtime

with jasper@ and Lauri Tirkkonen

devel/libffi/Makefile

@@ -1,8 +1,9 @@
-# $OpenBSD: Makefile,v 1.29 2015/04/06 12:11:39 jasper Exp $
+# $OpenBSD: Makefile,v 1.30 2015/04/24 13:48:27 dcoppa Exp $
 
 COMMENT=		Foreign Function Interface
 
 DISTNAME=		libffi-3.1
+REVISION=		0
 SHARED_LIBS +=  ffi                  1.1      # .6.2
 CATEGORIES=		devel
 
@@ -17,7 +18,8 @@ MASTER_SITES=		ftp://sourceware.org/pub/libffi/
 
 TEST_DEPENDS=		devel/dejagnu
 
-CONFIGURE_STYLE=	gnu
+CONFIGURE_STYLE=	autoconf
+AUTOCONF_VERSION=	2.69
 CONFIGURE_ARGS+=	${CONFIGURE_SHARED}
 
 FAKE_FLAGS+=		includesdir="${PREFIX}/include"

devel/libffi/patches/patch-configure_ac

@@ -0,0 +1,35 @@
+$OpenBSD: patch-configure_ac,v 1.4 2015/04/24 13:48:27 dcoppa Exp $
+
+commit ad0d1d239afc7ad09203847793dcc020856d1035
+Author: Samuli Suominen <ssuominen@gentoo.org>
+Date:   Thu Jun 12 06:30:21 2014 -0400
+
+Fix paths in libffi.pc.in
+
+--- configure.ac.orig	Sun May 11 15:57:49 2014
++++ configure.ac	Fri Apr 24 15:41:51 2015
+@@ -590,11 +590,11 @@ AC_ARG_ENABLE(purify-safety,
+ if test "x$GCC" = "xyes"; then
+   if test -n "$with_cross_host" &&
+      test x"$with_cross_host" != x"no"; then
+-    toolexecdir='$(exec_prefix)/$(target_alias)'
+-    toolexeclibdir='$(toolexecdir)/lib'
++    toolexecdir="${exec_prefix}"/'$(target_alias)'
++    toolexeclibdir="${toolexecdir}"/lib
+   else
+-    toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
+-    toolexeclibdir='$(libdir)'
++    toolexecdir="${libdir}"/gcc-lib/'$(target_alias)'
++    toolexeclibdir="${libdir}"
+   fi
+   multi_os_directory=`$CC $CFLAGS -print-multi-os-directory`
+   case $multi_os_directory in
+@@ -603,7 +603,7 @@ if test "x$GCC" = "xyes"; then
+   esac
+   AC_SUBST(toolexecdir)
+ else
+-  toolexeclibdir='$(libdir)'
++  toolexeclibdir="${libdir}"
+ fi
+ AC_SUBST(toolexeclibdir)
+