initial buildroot for linux 5.15

package/libwebsockets/Config.in

@@ -0,0 +1,13 @@
+config BR2_PACKAGE_LIBWEBSOCKETS
+	bool "libwebsockets"
+	depends on !BR2_STATIC_LIBS
+	select BR2_PACKAGE_ZLIB
+	help
+	  Libwebsockets is a lightweight pure C library built to use
+	  minimal CPU and memory resources, and provide fast throughput
+	  in both directions.
+
+	  https://libwebsockets.org/
+
+comment "libwebsockets needs a toolchain w/ dynamic library"
+	depends on BR2_STATIC_LIBS

package/libwebsockets/libwebsockets.hash

@@ -0,0 +1,3 @@
+# Locally computed:
+sha256  6ece1f422c6d38aabedec2476f2ac12e9aede8691b08137068ad85545ce3ff78  libwebsockets-4.0.21.tar.gz
+sha256  5756db345eb9c21cb06dd7cb69c38ec234657a233f9a186b4f5fa453681bd394  LICENSE

package/libwebsockets/libwebsockets.mk

@@ -0,0 +1,76 @@
+################################################################################
+#
+# libwebsockets
+#
+################################################################################
+
+LIBWEBSOCKETS_VERSION = 4.0.21
+LIBWEBSOCKETS_SITE = $(call github,warmcat,libwebsockets,v$(LIBWEBSOCKETS_VERSION))
+LIBWEBSOCKETS_LICENSE = MIT with exceptions
+LIBWEBSOCKETS_LICENSE_FILES = LICENSE
+LIBWEBSOCKETS_DEPENDENCIES = zlib
+LIBWEBSOCKETS_INSTALL_STAGING = YES
+LIBWEBSOCKETS_CONF_OPTS = \
+	-DLWS_WITHOUT_TESTAPPS=ON \
+	-DLWS_IPV6=ON \
+	-DLWS_UNIX_SOCK=ON \
+	-DLWS_WITHOUT_EXTENSIONS=OFF
+
+# If LWS_MAX_SMP=1, then there is no code related to pthreads compiled
+# in the library. If unset, LWS_MAX_SMP defaults to 32 and a small
+# amount of pthread mutex code is built into the library.
+ifeq ($(BR2_TOOLCHAIN_HAS_THREADS),)
+LIBWEBSOCKETS_CONF_OPTS += -DLWS_MAX_SMP=1
+else
+LIBWEBSOCKETS_CONF_OPTS += -DLWS_MAX_SMP=
+endif
+
+ifeq ($(BR2_PACKAGE_OPENSSL),y)
+LIBWEBSOCKETS_DEPENDENCIES += openssl host-openssl
+LIBWEBSOCKETS_CONF_OPTS += -DLWS_WITH_SSL=ON
+else
+LIBWEBSOCKETS_CONF_OPTS += -DLWS_WITH_SSL=OFF
+endif
+
+ifeq ($(BR2_PACKAGE_LIBEV),y)
+LIBWEBSOCKETS_DEPENDENCIES += libev
+LIBWEBSOCKETS_CONF_OPTS += \
+	-DLWS_WITH_LIBEV=ON \
+	-DLWS_WITH_LIBEVENT=OFF
+else ifeq ($(BR2_PACKAGE_LIBEVENT),y)
+LIBWEBSOCKETS_DEPENDENCIES += libevent
+LIBWEBSOCKETS_CONF_OPTS += \
+	-DLWS_WITH_LIBEV=OFF \
+	-DLWS_WITH_LIBEVENT=ON
+else
+LIBWEBSOCKETS_CONF_OPTS += \
+	-DLWS_WITH_LIBEV=OFF \
+	-DLWS_WITH_LIBEVENT=OFF
+endif
+
+ifeq ($(BR2_PACKAGE_LIBGLIB2),y)
+LIBWEBSOCKETS_DEPENDENCIES += libglib2
+LIBWEBSOCKETS_CONF_OPTS += -DLWS_WITH_GLIB=ON
+else
+LIBWEBSOCKETS_CONF_OPTS += -DLWS_WITH_GLIB=OFF
+endif
+
+ifeq ($(BR2_PACKAGE_UTIL_LINUX_LIBMOUNT),y)
+LIBWEBSOCKETS_DEPENDENCIES += util-linux
+LIBWEBSOCKETS_CONF_OPTS += -DLWS_WITH_FSMOUNT=ON
+else
+LIBWEBSOCKETS_CONF_OPTS += -DLWS_WITH_FSMOUNT=OFF
+endif
+
+ifeq ($(BR2_PACKAGE_LIBUV),y)
+LIBWEBSOCKETS_DEPENDENCIES += libuv
+LIBWEBSOCKETS_CONF_OPTS += -DLWS_WITH_LIBUV=ON
+else
+LIBWEBSOCKETS_CONF_OPTS += -DLWS_WITH_LIBUV=OFF
+endif
+
+ifeq ($(BR2_SHARED_LIBS),y)
+LIBWEBSOCKETS_CONF_OPTS += -DLWS_WITH_STATIC=OFF
+endif
+
+$(eval $(cmake-package))