initial buildroot for linux 5.15

package/kmsxx/Config.in

@@ -0,0 +1,29 @@
+config BR2_PACKAGE_KMSXX
+	bool "kms++"
+	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
+	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11 # linux/dma-buf.h
+	depends on BR2_INSTALL_LIBSTDCPP
+	depends on BR2_TOOLCHAIN_HAS_THREADS # libdrm
+	depends on BR2_USE_WCHAR # fmt
+	select BR2_PACKAGE_FMT
+	select BR2_PACKAGE_LIBDRM
+	help
+	  libkms++ is a C++11 library for kernel mode setting.
+
+	  Also included are simple test tools for KMS.
+
+	  https://github.com/tomba/kmsxx
+
+if BR2_PACKAGE_KMSXX
+
+config BR2_PACKAGE_KMSXX_INSTALL_TESTS
+	bool "Install test programs"
+	help
+	  This option allows to install the kmsxx test programs.
+
+endif
+
+comment "kms++ needs a toolchain w/ threads, C++, gcc >= 4.8, headers >= 4.11, wchar"
+	depends on !BR2_TOOLCHAIN_HAS_THREADS || !BR2_INSTALL_LIBSTDCPP || \
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_8 || !BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_11 \
+		|| !BR2_USE_WCHAR

package/kmsxx/kmsxx.hash

@@ -0,0 +1,3 @@
+# Locally calculated
+sha256  99759fe9334369ccd80ab0bbfe1110ee47e74f1e20abc2d7b2f028067ea0a0c3  kmsxx-824bbb1f4cd062d66b457faca50f904b34dfd96c.tar.gz
+sha256  fab3dd6bdab226f1c08630b1dd917e11fcb4ec5e1e020e2c16f83a0a13863e85  LICENSE

package/kmsxx/kmsxx.mk

@@ -0,0 +1,42 @@
+################################################################################
+#
+# kmsxx
+#
+################################################################################
+
+KMSXX_VERSION = 824bbb1f4cd062d66b457faca50f904b34dfd96c
+KMSXX_SITE = $(call github,tomba,kmsxx,$(KMSXX_VERSION))
+KMSXX_LICENSE = MPL-2.0
+KMSXX_LICENSE_FILES = LICENSE
+KMSXX_INSTALL_STAGING = YES
+KMSXX_DEPENDENCIES = fmt libdrm host-pkgconf
+KMSXX_CONF_OPTS = \
+	-Dkmscube=false \
+	-Dpykms=disabled \
+	-Domap=disabled \
+	-Dsystem-pybind11=enabled
+
+ifeq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_85180),y)
+KMSXX_CXXFLAGS += $(TARGET_CXXFLAGS) -O0
+endif
+
+ifeq ($(BR2_PACKAGE_KMSXX_INSTALL_TESTS),y)
+KMSXX_CONF_OPTS += -Dutils=true
+# extra handling for some utils not installed by default
+KMSXX_EXTRA_UTILS = kmsview kmscapture omap-wbcap omap-wbm2m
+ifeq ($(BR2_PACKAGE_LIBEVDEV),y)
+KMSXX_DEPENDENCIES += libevdev
+KMSXX_EXTRA_UTILS += kmstouch
+endif
+define KMSXX_INSTALL_EXTRA_UTILS
+	$(foreach t,$(KMSXX_EXTRA_UTILS),\
+		$(INSTALL) -D -m 0755 $(@D)/build/utils/$(t) \
+			$(TARGET_DIR)/usr/bin/$(t)
+	)
+endef
+KMSXX_POST_INSTALL_TARGET_HOOKS += KMSXX_INSTALL_EXTRA_UTILS
+else
+KMSXX_CONF_OPTS += -Dutils=false
+endif
+
+$(eval $(meson-package))