package/paho-mqtt-cpp: new package

Signed-off-by: Refik Tuzakli <refik.tuzakli@savronik.com.tr>
[Thomas:
 - add missing dependency on BR2_TOOLCHAIN_HAS_GCC_BUG_64735 and
   corresponding Config.in comment
 - add missing dependency on BR2_INSTALL_LIBSTDCPP and update
   Config.in comment
 - add comment to explain why -DTHREADS_PTHREAD_ARG=OFF is passed in
   CONF_OPTS]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

DEVELOPERS

@@ -1839,6 +1839,9 @@ N:	Rahul Jain <rahul.jain@imgtec.com>
 F:	package/uhttpd/
 F:	package/ustream-ssl/
 
+N:	Refik Tuzakli <refik.tuzakli@savronik.com.tr>
+F:	package/paho-mqtt-cpp/
+
 N:	Rémi Rérolle <remi.rerolle@gmail.com>
 F:	package/libfreeimage/
 

package/Config.in

@@ -1603,6 +1603,7 @@ menu "Networking"
 	source "package/openzwave/Config.in"
 	source "package/ortp/Config.in"
 	source "package/paho-mqtt-c/Config.in"
+	source "package/paho-mqtt-cpp/Config.in"
 	source "package/qdecoder/Config.in"
 	source "package/qpid-proton/Config.in"
 	source "package/rabbitmq-c/Config.in"

package/paho-mqtt-cpp/Config.in

@@ -0,0 +1,19 @@
+config BR2_PACKAGE_PAHO_MQTT_CPP
+	bool "paho-mqtt-cpp"
+	depends on !BR2_STATIC_LIBS  # dlopen()
+	depends on BR2_TOOLCHAIN_HAS_THREADS
+	depends on !BR2_TOOLCHAIN_HAS_GCC_BUG_64735 # std::future
+	depends on BR2_INSTALL_LIBSTDCPP
+	select BR2_PACKAGE_PAHO_MQTT_C
+	help
+	  MQTT client C++ library
+
+	  https://eclipse.org/paho/clients/cpp/
+
+comment "paho-mqtt-cpp needs a toolchain w/ threads, C++, dynamic library support"
+	depends on BR2_STATIC_LIBS || !BR2_TOOLCHAIN_HAS_THREADS || \
+		!BR2_INSTALL_LIBSTDCPP
+	depends on !BR2_TOOLCHAIN_HAS_GCC_BUG_64735
+
+comment "paho-mqtt-cpp needs a toolchain not affected by GCC bug 64735"
+	depends on BR2_TOOLCHAIN_HAS_GCC_BUG_64735

package/paho-mqtt-cpp/paho-mqtt-cpp.hash

@@ -0,0 +1,4 @@
+# Locally computed:
+sha256  9f78afb988e9ce9bb7cb74805053221efbb073b74683e222d1d087633178b51f  paho-mqtt-cpp-v1.0.0.tar.gz
+sha256  83bbba033dc985487e321b6dfde111772affb73460be48726299fed3da684b1c  edl-v10
+sha256  44277b2bec6093e4ac313afec251a4de599d24c4e768f8574d95b13a9d2d97b5  epl-v10

package/paho-mqtt-cpp/paho-mqtt-cpp.mk

@@ -0,0 +1,25 @@
+################################################################################
+#
+# paho-mqtt-cpp
+#
+################################################################################
+
+PAHO_MQTT_CPP_VERSION = v1.0.0
+PAHO_MQTT_CPP_SITE = $(call github,eclipse,paho.mqtt.cpp,$(PAHO_MQTT_CPP_VERSION))
+PAHO_MQTT_CPP_LICENSE = EPL-1.0 or BSD-3-Clause
+PAHO_MQTT_CPP_LICENSE_FILES = epl-v10 edl-v10
+PAHO_MQTT_CPP_INSTALL_STAGING = YES
+PAHO_MQTT_CPP_DEPENDENCIES = paho-mqtt-c
+
+# The following CMake variable disables a TRY_RUN call in the -pthread
+# test which is not allowed when cross-compiling (for cmake < 3.10)
+PAHO_MQTT_CPP_CONF_OPTS = -DTHREADS_PTHREAD_ARG=OFF
+
+ifeq ($(BR2_PACKAGE_OPENSSL),y)
+PAHO_MQTT_CPP_DEPENDENCIES += openssl
+PAHO_MQTT_CPP_CONF_OPTS += -DPAHO_WITH_SSL=TRUE
+else
+PAHO_MQTT_CPP_CONF_OPTS += -DPAHO_WITH_SSL=FALSE
+endif
+
+$(eval $(cmake-package))