package/boost: add library coroutine2

Coroutine2 is a new (C++14) library added in boost 1.59.0. We also add
coroutine2 to the '--without-libraries' configuration flag for the host
variant.

Build successfully tested with Arago ARMv5 2011.09 - a gcc v4.5.3 toolchain.

Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Reviewed-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Tested-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/boost/Config.in

@@ -78,6 +78,10 @@ config BR2_PACKAGE_BOOST_COROUTINE
 	bool "boost-coroutine"
 	depends on BR2_PACKAGE_BOOST_CONTEXT
 
+config BR2_PACKAGE_BOOST_COROUTINE2
+	bool "boost-coroutine2"
+	depends on BR2_PACKAGE_BOOST_CONTEXT
+
 config BR2_PACKAGE_BOOST_DATE_TIME
 	bool "boost-date_time"
 

package/boost/boost.mk

@@ -16,15 +16,16 @@ HOST_BOOST_DEPENDENCIES =
 # keep host variant as minimal as possible
 HOST_BOOST_FLAGS = --without-icu \
 	--without-libraries=$(subst $(space),$(comma),atomic chrono context \
-	coroutine date_time exception filesystem graph graph_parallel \
-	iostreams locale log math mpi program_options python random regex \
-	serialization signals system test thread timer wave)
+	coroutine coroutine2 date_time exception filesystem graph \
+	graph_parallel iostreams locale log math mpi program_options python \
+	random regex serialization signals system test thread timer wave)
 
 BOOST_WITHOUT_FLAGS += $(if $(BR2_PACKAGE_BOOST_ATOMIC),,atomic)
 BOOST_WITHOUT_FLAGS += $(if $(BR2_PACKAGE_BOOST_CHRONO),,chrono)
 BOOST_WITHOUT_FLAGS += $(if $(BR2_PACKAGE_BOOST_CONTAINER),,container)
 BOOST_WITHOUT_FLAGS += $(if $(BR2_PACKAGE_BOOST_CONTEXT),,context)
 BOOST_WITHOUT_FLAGS += $(if $(BR2_PACKAGE_BOOST_COROUTINE),,coroutine)
+BOOST_WITHOUT_FLAGS += $(if $(BR2_PACKAGE_BOOST_COROUTINE2),,coroutine2)
 BOOST_WITHOUT_FLAGS += $(if $(BR2_PACKAGE_BOOST_DATE_TIME),,date_time)
 BOOST_WITHOUT_FLAGS += $(if $(BR2_PACKAGE_BOOST_EXCEPTION),,exception)
 BOOST_WITHOUT_FLAGS += $(if $(BR2_PACKAGE_BOOST_FILESYSTEM),,filesystem)