initial buildroot for linux 5.15

package/libass/Config.in

@@ -0,0 +1,18 @@
+config BR2_PACKAGE_LIBASS
+	bool "libass"
+	depends on BR2_INSTALL_LIBSTDCPP # harfbuzz
+	depends on BR2_TOOLCHAIN_HAS_SYNC_4 # harfbuzz
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 # harfbuzz
+	select BR2_PACKAGE_FREETYPE
+	select BR2_PACKAGE_HARFBUZZ
+	select BR2_PACKAGE_LIBFRIBIDI
+	help
+	  libass is a portable subtitle renderer for the ASS/SSA
+	  (Advanced Substation Alpha/Substation Alpha) subtitle format
+
+	  https://github.com/libass/libass
+
+comment "libass needs a toolchain w/ C++, gcc >= 4.8"
+	depends on BR2_TOOLCHAIN_HAS_SYNC_4
+	depends on !BR2_INSTALL_LIBSTDCPP || \
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_8

package/libass/libass.hash

@@ -0,0 +1,3 @@
+# Locally computed
+sha256  1be2df9c4485a57d78bb18c0a8ed157bc87a5a8dd48c661961c625cb112832fd  libass-0.15.2.tar.xz
+sha256  f7e30699d02798351e7f839e3d3bfeb29ce65e44efa7735c225464c4fd7dfe9c  COPYING

package/libass/libass.mk

@@ -0,0 +1,36 @@
+################################################################################
+#
+# libass
+#
+################################################################################
+
+LIBASS_VERSION = 0.15.2
+LIBASS_SOURCE = libass-$(LIBASS_VERSION).tar.xz
+# Do not use the github helper here, the generated tarball is *NOT*
+# the same as the one uploaded by upstream for the release.
+LIBASS_SITE = https://github.com/libass/libass/releases/download/$(LIBASS_VERSION)
+LIBASS_INSTALL_STAGING = YES
+LIBASS_LICENSE = ISC
+LIBASS_LICENSE_FILES = COPYING
+LIBASS_CPE_ID_VENDOR = libass_project
+LIBASS_DEPENDENCIES = \
+	host-pkgconf \
+	freetype \
+	harfbuzz \
+	libfribidi \
+	$(if $(BR2_PACKAGE_LIBICONV),libiconv)
+
+# configure: WARNING: Install nasm for a significantly faster libass build.
+# only for Intel archs
+ifeq ($(BR2_i386)$(BR2_x86_64),y)
+LIBASS_DEPENDENCIES += host-nasm
+endif
+
+ifeq ($(BR2_PACKAGE_FONTCONFIG),y)
+LIBASS_DEPENDENCIES += fontconfig
+LIBASS_CONF_OPTS += --enable-fontconfig
+else
+LIBASS_CONF_OPTS += --disable-fontconfig --disable-require-system-font-provider
+endif
+
+$(eval $(autotools-package))