package/paho-mqtt-c: drop dynamic library dependency

paho-mqtt-c can be built statically since version 1.3.3 and
https://github.com/eclipse/paho.mqtt.c/commit/f1459fac2532658a04962ae0ab67b5c3dc92ad75

See https://github.com/eclipse/paho.mqtt.c/issues/848

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/janus-gateway/Config.in

@@ -59,12 +59,11 @@ comment "transports"
 
 config BR2_PACKAGE_JANUS_GATEWAY_MQTT
 	bool "MQTT"
-	depends on !BR2_STATIC_LIBS
 	depends on BR2_TOOLCHAIN_HAS_THREADS
 	select BR2_PACKAGE_PAHO_MQTT_C
 
-comment "MQTT transport needs a toolchain w/ threads and dynamic library support"
-	depends on BR2_STATIC_LIBS || !BR2_TOOLCHAIN_HAS_THREADS
+comment "MQTT transport needs a toolchain w/ threads"
+	depends on !BR2_TOOLCHAIN_HAS_THREADS
 
 config BR2_PACKAGE_JANUS_GATEWAY_RABBITMQ
 	bool "RabbitMQ"

package/paho-mqtt-c/Config.in

@@ -1,11 +1,10 @@
 config BR2_PACKAGE_PAHO_MQTT_C
 	bool "paho-mqtt-c"
-	depends on !BR2_STATIC_LIBS  # dlopen()
 	depends on BR2_TOOLCHAIN_HAS_THREADS
 	help
 	  MQTT client C library
 
 	  https://eclipse.org/paho/clients/c/
 
-comment "paho-mqtt-c needs a toolchain w/ threads and dynamic library support"
-	depends on BR2_STATIC_LIBS || !BR2_TOOLCHAIN_HAS_THREADS
+comment "paho-mqtt-c needs a toolchain w/ threads"
+	depends on !BR2_TOOLCHAIN_HAS_THREADS

package/paho-mqtt-c/paho-mqtt-c.mk

@@ -22,4 +22,18 @@ else
 PAHO_MQTT_C_CONF_OPTS += -DPAHO_WITH_SSL=FALSE
 endif
 
+ifeq ($(BR2_SHARED_LIBS),y)
+PAHO_MQTT_C_CONF_OPTS += \
+	-DPAHO_BUILD_SHARED=TRUE \
+	-DPAHO_BUILD_STATIC=FALSE
+else ifeq ($(BR2_STATIC_LIBS),y)
+PAHO_MQTT_C_CONF_OPTS += \
+	-DPAHO_BUILD_SHARED=FALSE \
+	-DPAHO_BUILD_STATIC=TRUE
+else ifeq ($(BR2_SHARED_STATIC_LIBS),y)
+PAHO_MQTT_C_CONF_OPTS += \
+	-DPAHO_BUILD_SHARED=TRUE \
+	-DPAHO_BUILD_STATIC=TRUE
+endif
+
 $(eval $(cmake-package))