libwebsockets: update to 4.1.6

This is a major version bump, from 3.x to 4.x, and continues the path
towards a mail client.

New features:
* ntp client
* dns resolver
* mqtt client
* number humanizing string helpers

License change upstream.
cmake options tweaked to match current upstream defaults again.

Tested with mosquitto and ttyd.

Signed-off-by: Karl Palsson <karlp@etactica.com>

libs/libwebsockets/Makefile

@@ -8,17 +8,17 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libwebsockets
-PKG_VERSION:=3.1.0
-PKG_RELEASE:=2
+PKG_VERSION:=4.1.6
+PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
 PKG_SOURCE_URL:=https://codeload.github.com/warmcat/libwebsockets/tar.gz/v$(PKG_VERSION)?
-PKG_HASH:=db948be74c78fc13f1f1a55e76707d7baae3a1c8f62b625f639e8f2736298324
+PKG_HASH:=402e9a8df553c9cd2aff5d7a9758e9e5285bf3070c82539082864633db3deb83
 
 PKG_SOURCE_VERSION:=v$(PKG_VERSION)
 
-PKG_LICENSE:=LGPL-2.1+exception
+PKG_LICENSE:=MIT
 PKG_LICENSE_FILES:=LICENSE
 
 CMAKE_INSTALL:=1
@@ -27,14 +27,15 @@ include $(INCLUDE_DIR)/package.mk
 include $(INCLUDE_DIR)/cmake.mk
 
 CMAKE_OPTIONS += -DLWS_IPV6=$(if $(CONFIG_IPV6),ON,OFF)
-CMAKE_OPTIONS += -DLWS_WITHOUT_TESTAPPS=ON
-
-# other options worth noting
-# CMAKE_OPTIONS += -DLWS_WITHOUT_EXTENSIONS=ON
-# CMAKE_OPTIONS += -DLWS_WITHOUT_DAEMONIZE=ON
-# CMAKE_OPTIONS += -DLWS_WITHOUT_SERVER=ON
-# CMAKE_OPTIONS += -DLWS_WITHOUT_DEBUG=ON
+CMAKE_OPTIONS += -DISABLE_WERROR=ON
+CMAKE_OPTIONS += -DCMAKE_BUILD_TYPE=Release
 
+# turn off all test apps
+CMAKE_OPTIONS += -DLWS_WITHOUT_TESTAPPS=ON
+CMAKE_OPTIONS += -DLWS_WITHOUT_TEST_SERVER=ON
+CMAKE_OPTIONS += -DLWS_WITHOUT_TEST_SERVER_EXTPOLL=ON
+CMAKE_OPTIONS += -DLWS_WITHOUT_TEST_PING=ON
+CMAKE_OPTIONS += -DLWS_WITHOUT_TEST_CLIENT=ON
 
 define Package/libwebsockets/Default
 	SECTION:=libs
@@ -69,7 +70,6 @@ endef
 
 ifeq ($(BUILD_VARIANT),openssl)
     CMAKE_OPTIONS += -DLWS_OPENSSL_CLIENT_CERTS=/etc/ssl/certs
-    CMAKE_OPTIONS += -DLWS_OPENSSL_SUPPORT=ON
     CMAKE_OPTIONS += -DLWS_WITH_SSL=ON
 endif
 
@@ -79,7 +79,6 @@ endif
 
 ifeq ($(BUILD_VARIANT),full)
     CMAKE_OPTIONS += -DLWS_OPENSSL_CLIENT_CERTS=/etc/ssl/certs
-    CMAKE_OPTIONS += -DLWS_OPENSSL_SUPPORT=ON
     CMAKE_OPTIONS += -DLWS_WITH_SSL=ON
     CMAKE_OPTIONS += -DLWS_WITH_LIBUV=ON
     CMAKE_OPTIONS += -DLWS_WITH_PLUGINS=ON
@@ -96,7 +95,11 @@ endef
 
 Package/libwebsockets-mbedtls/install = $(Package/libwebsockets/install)
 Package/libwebsockets-openssl/install = $(Package/libwebsockets/install)
-Package/libwebsockets-full/install = $(Package/libwebsockets/install)
+
+define Package/libwebsockets-full/install
+	$(call Package/libwebsockets/install,$(1))
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libwebsockets-evlib_uv.so* $(1)/usr/lib
+endef
 
 $(eval $(call BuildPackage,libwebsockets-openssl))
 $(eval $(call BuildPackage,libwebsockets-mbedtls))

libs/libwebsockets/patches/020-fix-travis.patch

---- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -1233,9 +1233,9 @@ if (CMAKE_COMPILER_IS_GNUCC OR CMAKE_COM
-     endif()
- 
-     if (UNIX AND NOT LWS_WITH_ESP32)
--	    set(CMAKE_C_FLAGS "-Wall -Wsign-compare -Wignored-qualifiers -Wtype-limits -Wuninitialized -Werror ${VISIBILITY_FLAG} -Wundef ${GCOV_FLAGS} ${CMAKE_C_FLAGS} ${ASAN_FLAGS}" )
-+	    set(CMAKE_C_FLAGS "-Wall -Wsign-compare -Wignored-qualifiers -Wtype-limits -Wuninitialized ${VISIBILITY_FLAG} -Wundef ${GCOV_FLAGS} ${CMAKE_C_FLAGS} ${ASAN_FLAGS}" )
-     else()
--	    set(CMAKE_C_FLAGS "-Wall -Wsign-compare -Wignored-qualifiers -Wtype-limits -Wuninitialized -Werror ${VISIBILITY_FLAG} ${GCOV_FLAGS} ${CMAKE_C_FLAGS}" )
-+	    set(CMAKE_C_FLAGS "-Wall -Wsign-compare -Wignored-qualifiers -Wtype-limits -Wuninitialized ${VISIBILITY_FLAG} ${GCOV_FLAGS} ${CMAKE_C_FLAGS}" )
-     endif()
- endif ()
-