openpgm: new package

OpenPGM is an open source implementation of the Pragmatic General
Multicast (PGM) specification in RFC 3208 available at www.ietf.org.
It is required for PGM/EPGM support in ZeroMQ library.

Signed-off-by: Alexander Lukichev <alexander.lukichev@gmail.com>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/Config.in

@@ -528,6 +528,7 @@ source "package/libtorrent/Config.in"
 source "package/libupnp/Config.in"
 source "package/libvncserver/Config.in"
 source "package/nss-mdns/Config.in"
+source "package/openpgm/Config.in"
 source "package/ortp/Config.in"
 source "package/slirp/Config.in"
 source "package/usbredir/Config.in"

package/openpgm/Config.in

@@ -0,0 +1,16 @@
+config BR2_PACKAGE_OPENPGM
+	bool "openpgm"
+	depends on BR2_TOOLCHAIN_HAS_THREADS
+	depends on BR2_INET_IPV6
+	depends on BR2_USE_WCHAR
+	help
+	  OpenPGM is an open source implementation of the Pragmatic General
+	  Multicast (PGM) specification in RFC 3208 available at www.ietf.org.
+	  PGM is a reliable and scalable multicast protocol that enables
+	  receivers to detect loss, request retransmission of lost data, or
+	  notify an application of unrecoverable loss.
+
+	  http://code.google.com/p/openpgm/
+
+comment "openpgm needs a toolchain with WCHAR, threads and IPv6 support"
+	depends on !(BR2_TOOLCHAIN_HAS_THREADS && BR2_INET_IPV6 && BR2_USE_WCHAR)

package/openpgm/openpgm-cross-compile.patch

@@ -0,0 +1,38 @@
+configure.ac: cross-compilation fix
+
+This patch enables to configure the package when cross-compiling in a way
+recommended by Autoconf manual (see manual for version 2.69, Section 6.6
+Checking Runtime Behavior).
+
+Signed-off-by: Alexander Lukichev <alexander.lukichev@gmail.com>
+
+--- a/openpgm/pgm/configure.ac	2011-09-27 20:59:08.000000000 +0300
++++ b/openpgm/pgm/configure.ac	2013-02-12 10:33:53.000000000 +0200
+@@ -272,14 +272,19 @@ uint32_t add32_with_carry (uint32_t a, u
+ 	;;
+ esac
+ # ticket spinlock friendly: unaligned pointers & atomic ops (excl. Sun Pro)
+-AC_MSG_CHECKING([for unaligned pointers])
+-AC_RUN_IFELSE(
+-	[AC_LANG_PROGRAM([[char* nezumi = "mouse";]],
+-		[[short x = *(short*)(nezumi + 2)]])],
+-	[AC_MSG_RESULT([yes])
+-		pgm_unaligned_pointers=yes],
+-	[AC_MSG_RESULT([no])
+-		pgm_unaligned_pointers=no])
++AC_CACHE_CHECK([if unaligned access fails], [ac_cv_lbl_unaligned_fail],
++	[AC_RUN_IFELSE(
++		[AC_LANG_PROGRAM([[char* nezumi = "mouse";]],
++			[[short x = *(short*)(nezumi + 2)]])],
++		[ac_cv_lbl_unaligned_fail=no],
++		[ac_cv_lbl_unaligned_fail=yes],
++		[ac_cv_lbl_unaligned_fail=yes])
++	])
++if test "$ac_cv_lbl_unaligned_fail" = yes; then
++	pgm_unaligned_pointers=no
++else
++	pgm_unaligned_pointers=yes
++fi
+ AC_MSG_CHECKING([for intrinsic atomic ops])
+ # AC_PREPROC_IFELSE not always portable
+ AC_COMPILE_IFELSE(

package/openpgm/openpgm.mk

@@ -0,0 +1,18 @@
+#############################################################
+#
+# openpgm
+#
+#############################################################
+
+OPENPGM_VERSION = 5.1.118~dfsg
+OPENPGM_SOURCE = libpgm-$(OPENPGM_VERSION).tar.gz
+OPENPGM_SITE = http://openpgm.googlecode.com/files/
+OPENPGM_LICENSE = LGPLv2.1+
+OPENPGM_LICENSE_FILES = openpgm/pgm/LICENSE
+OPENPGM_INSTALL_STAGING = YES
+OPENPGM_AUTORECONF = YES
+OPENPGM_SUBDIR = openpgm/pgm/
+OPENPGM_CONF_ENV = ac_cv_file__proc_cpuinfo=yes ac_cv_file__dev_rtc=no \
+                   ac_cv_file__dev_hpet=no
+
+$(eval $(autotools-package))