media-libs/libdvdnav: check pkg-config before xxx-config scripts

http://lists.mplayerhq.hu/pipermail/dvdnav-discuss/2012-March/001672.html

it's easier to manage pkg-config when cross-compiling, and libdvdread installs
.pc files, so check those first

BUG=chrome-os-partner:2004
TEST=emerge-link libdvdnav # pass

Change-Id: I5bf4864c5a90dad35debe1e5bf8cf6941448bc96
Reviewed-on: https://gerrit.chromium.org/gerrit/22252
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Commit-Ready: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
diff --git a/media-libs/libdvdnav/files/libdvdnav-4.2.0-pkgconfig.patch b/media-libs/libdvdnav/files/libdvdnav-4.2.0-pkgconfig.patch
new file mode 100644
index 0000000..0edcab9
--- /dev/null
+++ b/media-libs/libdvdnav/files/libdvdnav-4.2.0-pkgconfig.patch
@@ -0,0 +1,54 @@
+http://lists.mplayerhq.hu/pipermail/dvdnav-discuss/2012-March/001672.html
+
+use pkg-config for libdvdread by default rather than the ugly xxx-config scripts
+
+https://bugs.gentoo.org/410189
+
+hassle vapier@gentoo.org if this causes issues
+
+--- configure.ac	(revision 1243)
++++ configure.ac	(working copy)
+@@ -89,6 +89,7 @@ AC_PROG_CC
+ AC_PROG_MAKE_SET
+ AC_PROG_INSTALL
+ AC_PROG_LN_S
++PKG_PROG_PKG_CONFIG
+ 
+ dnl --------------------------------------------------------------
+ dnl Libtool
+@@ -185,15 +186,26 @@ AC_ARG_WITH([dvdread-config],
+   [AS_HELP_STRING([--with-dvdread-config=PROG],
+     [dvdread-config program to use @<:@default=from PATH@:>@])],
+   [DVDREAD_CONFIG="$withval"],
+-  [dnl User didn't specify program, search PATH
+-  AC_PATH_PROG([DVDREAD_CONFIG], [dvdread-config], [no])
+-  test "x$DVDREAD_CONFIG" = xno && \
+-    AC_MSG_ERROR([dvdread-config required to link with libdvdread])
+-  ])
+-DVDREAD_CFLAGS=`$DVDREAD_CONFIG --cflags` || \
+-  AC_MSG_ERROR([Could not get libdvdread CFLAGS from $DVDREAD_CONFIG])
+-DVDREAD_LIBS=`$DVDREAD_CONFIG --libs` || \
+-  AC_MSG_ERROR([Could not get libdvdread LIBS from $DVDREAD_CONFIG])
++  [DVDREAD_CONFIG=""])
++
++dnl by default, search pkg-config, and then fall back to dvdread-config
++DVDREAD_PKG_CONFIG="no"
++if test "x$DVDREAD_CONFIG" = "x"; then
++  PKG_CHECK_MODULES([DVDREAD], [dvdread],
++    [DVDREAD_PKG_CONFIG="yes"],
++    [dnl User didn't specify program, search PATH
++      AC_PATH_PROG([DVDREAD_CONFIG], [dvdread-config], [no])
++      test "x$DVDREAD_CONFIG" = xno && \
++      AC_MSG_ERROR([dvdread-config required to link with libdvdread])
++    ])
++fi
++if test "x$DVDREAD_PKG_CONFIG" != "xyes"; then
++  DVDREAD_CFLAGS=`$DVDREAD_CONFIG --cflags` || \
++    AC_MSG_ERROR([Could not get libdvdread CFLAGS from $DVDREAD_CONFIG])
++  DVDREAD_LIBS=`$DVDREAD_CONFIG --libs` || \
++    AC_MSG_ERROR([Could not get libdvdread LIBS from $DVDREAD_CONFIG])
++fi
++
+ AC_SUBST([DVDREAD_CFLAGS])
+ AC_SUBST([DVDREAD_LIBS])
+ 
diff --git a/media-libs/libdvdnav/libdvdnav-4.2.0.ebuild b/media-libs/libdvdnav/libdvdnav-4.2.0.ebuild
index 7585a75..25f51c1 100644
--- a/media-libs/libdvdnav/libdvdnav-4.2.0.ebuild
+++ b/media-libs/libdvdnav/libdvdnav-4.2.0.ebuild
@@ -1,9 +1,9 @@
 # Copyright 1999-2012 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
-# $Header: /var/cvsroot/gentoo-x86/media-libs/libdvdnav/libdvdnav-4.2.0.ebuild,v 1.6 2012/02/12 19:39:12 armin76 Exp $
+# $Header: /var/cvsroot/gentoo-x86/media-libs/libdvdnav/libdvdnav-4.2.0.ebuild,v 1.7 2012/04/12 23:40:17 vapier Exp $
 
 EAPI=4
-inherit autotools libtool
+inherit autotools
 
 DESCRIPTION="Library for DVD navigation tools"
 HOMEPAGE="http://dvdnav.mplayerhq.hu/"
@@ -21,7 +21,7 @@
 
 src_prepare() {
 	sed -i -e '/^CFLAGS/s:-O3::' configure.ac || die
-	elibtoolize
+	epatch "${FILESDIR}"/${PN}-4.2.0-pkgconfig.patch
 	eautoreconf
 }
 
diff --git a/metadata/md5-cache/media-libs/libdvdnav-4.2.0 b/metadata/md5-cache/media-libs/libdvdnav-4.2.0
index 14c8490..65f2533 100644
--- a/metadata/md5-cache/media-libs/libdvdnav-4.2.0
+++ b/metadata/md5-cache/media-libs/libdvdnav-4.2.0
@@ -9,4 +9,4 @@
 SLOT=0
 SRC_URI=http://dvdnav.mplayerhq.hu/releases/libdvdnav-4.2.0.tar.bz2
 _eclasses_=autotools	addbdf6cce5024ac93ad2084ad5e1d2d	eutils	33ef77a15337022e05342d2c772a7a5a	libtool	0fd90d183673bf1107465ec45849d1ea	multilib	5f4ad6cf85e365e8f0c6050ddd21659e	portability	0be430f759a631e692678ed796e09f5c	toolchain-funcs	6526ac6fc9aedf391efb91fcd75ace68	user	9e552f935106ff0bc92af16da64b4b29
-_md5_=a3bd0703282bda1125d1cb1040cffd77
+_md5_=51423d4e3652bbf849fffca1f110223b