boost: Support enums in hash

Fixes builds which were building fine with previous versions of boost

(From OE-Core rev: 139b65affbf50c4230e344cd4d0205ef025bb7c3)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 49 insertions, 2 deletions

diff --git a/meta/recipes-support/boost/boost_1.51.0.bb b/meta/recipes-support/boost/boost_1.51.0.bb
index 1564b0ef6a..b95049f277 100644
--- a/meta/recipes-support/boost/boost_1.51.0.bb
+++ b/meta/recipes-support/boost/boost_1.51.0.bb
@@ -2,8 +2,10 @@ include boost.inc
 
 LIC_FILES_CHKSUM = "file://LICENSE_1_0.txt;md5=e4224ccaecb14d942c71d31bef20d78c"
 
-PR = "${INC_PR}.0"
+PR = "${INC_PR}.1"
 
-SRC_URI += "file://arm-intrinsics.patch"
+SRC_URI += "file://arm-intrinsics.patch \
+            file://hash_enums.patch \
+           "
 SRC_URI[md5sum] = "4b6bd483b692fd138aef84ed2c8eb679"
 SRC_URI[sha256sum] = "fb2d2335a29ee7fe040a197292bfce982af84a645c81688a915c84c925b69696"
diff --git a/meta/recipes-support/boost/files/hash_enums.patch b/meta/recipes-support/boost/files/hash_enums.patch
new file mode 100644
index 0000000000..368da962c1
--- /dev/null
+++ b/meta/recipes-support/boost/files/hash_enums.patch
@@ -0,0 +1,45 @@
+Allow hashing of enums.
+Fixes errors like 
+
+/opt/poky/1.3.0-1/sysroots/i586-poky-linux/usr/include/boost/functional/hash/extensions.hpp:257:34: error: no matching function for call to 'hash_value(const myspace::idx&)'
+
+Upstream-Status: Pending
+Singed-off-by: Khem Raj <raj.khem@gmail.com>
+
+Index: boost_1_51_0/boost/functional/hash/hash.hpp
+===================================================================
+--- boost_1_51_0.orig/boost/functional/hash/hash.hpp    2012-07-15 16:28:30.000000000 -0700
++++ boost_1_51_0/boost/functional/hash/hash.hpp 2012-09-26 14:00:57.738364002 -0700
+@@ -15,6 +15,8 @@
+ #include <boost/functional/hash/detail/hash_float.hpp>
+ #include <string>
+ #include <boost/limits.hpp>
++#include <boost/type_traits/is_enum.hpp>
++#include <boost/utility/enable_if.hpp>
+ 
+ #if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
+ #include <boost/type_traits/is_pointer.hpp>
+@@ -89,6 +91,9 @@
+     typename boost::hash_detail::long_numbers<T>::type hash_value(T);
+     template <typename T>
+     typename boost::hash_detail::ulong_numbers<T>::type hash_value(T);
++    template <typename T>
++    typename boost::enable_if<boost::is_enum<T>, std::size_t>::type
++      hash_value(T);
+ 
+ #if !BOOST_WORKAROUND(__DMC__, <= 0x848)
+     template <class T> std::size_t hash_value(T* const&);
+@@ -178,7 +183,12 @@
+     {
+         return hash_detail::hash_value_unsigned(v);
+     }
+-
++    template <typename T>
++    typename boost::enable_if<boost::is_enum<T>, std::size_t>::type
++      hash_value(T v)
++    {
++      return static_cast<std::size_t>(v);
++    }
+     // Implementation by Alberto Barbati and Dave Harris.
+ #if !BOOST_WORKAROUND(__DMC__, <= 0x848)
+     template <class T> std::size_t hash_value(T* const& v)