protobuf: bump to version 3.0.0

It also changes the python-protobuf.hash file to be a symbolic link to
../protobuf/protobuf.hash so that both hash files don't have to be
updated when protobuf is bumped.

In addition, the 0001-disable-unneeded-build-dependencies.patch patch
from package/python-protobuf/ is removed because it has been merged
upstream.

Signed-off-by: Jan Heylen <heyleke@gmail.com>
[Thomas: fix the build of python-protobuf.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/package/protobuf/0001-configure.ac-check-if-libatomic-is-needed.patch b/package/protobuf/0001-configure.ac-check-if-libatomic-is-needed.patch
new file mode 100644
index 0000000000..fffdf49fac
--- /dev/null
+++ b/package/protobuf/0001-configure.ac-check-if-libatomic-is-needed.patch
@@ -0,0 +1,34 @@
+From f020fe05a20dfcd16cd7df833dcf3cdeef770538 Mon Sep 17 00:00:00 2001
+From: Carlos Santos <casantos@datacom.ind.br>
+Date: Thu, 11 Feb 2016 10:58:35 -0200
+Subject: [PATCH 2/2] configure.ac: check if libatomic is needed
+
+Compilation of protobuf for PowerPC and SPARC may fail due to missing
+references to __atomic_fetch_add_4 and __atomic_compare_exchange_4.
+
+The __atomic_*() intrinsics for all sizes are provided by libatomic when
+gcc is >= 4.8. This can be achieved by adding this to configure.ac:
+
+    AC_SEARCH_LIBS([__atomic_fetch_add_4], [atomic])
+
+Signed-off-by: Carlos Santos <casantos@datacom.ind.br>
+---
+ configure.ac | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/configure.ac b/configure.ac
+index c07067c..88d4a0d 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -160,6 +160,8 @@ AM_CONDITIONAL([HAVE_PTHREAD], [test "x$acx_pthread_ok" = "xyes"])
+ # We still keep this for improving pbconfig.h for unsupported platforms.
+ AC_CXX_STL_HASH
+ 
++AC_SEARCH_LIBS([__atomic_load_4], [atomic])
++
+ case "$target_os" in
+   mingw* | cygwin* | win*)
+     ;;
+-- 
+2.5.0
+