initial buildroot for linux 5.15

package/libglew/Config.in

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+config BR2_PACKAGE_LIBGLEW
+	bool "libglew"
+	depends on BR2_PACKAGE_XORG7
+	depends on BR2_PACKAGE_HAS_LIBGL
+	select BR2_PACKAGE_XLIB_LIBX11
+	select BR2_PACKAGE_XLIB_LIBXEXT
+	select BR2_PACKAGE_XLIB_LIBXI
+	select BR2_PACKAGE_XLIB_LIBXMU
+	help
+	  The OpenGL Extension Wrangler Library (GLEW) is a
+	  cross-platform C/C++ extension loading library. GLEW provides
+	  efficient run-time mechanisms for determining which OpenGL
+	  extensions are supported on the target platform. OpenGL core
+	  and extension functionality is exposed in a single header
+	  file.
+
+	  https://github.com/nigels-com/glew
+
+comment "libglew depends on X.org and needs an OpenGL backend"
+	depends on !BR2_PACKAGE_XORG7 || !BR2_PACKAGE_HAS_LIBGL

package/libglew/libglew.hash

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+# Locally computed:
+sha256  d4fc82893cfb00109578d0a1a2337fb8ca335b3ceccf97b97e5cc7f08e4353e1  glew-2.2.0.tgz
+sha256  8991cd11befec7c6a63662700f03c0cc42e864b6e77c7e70b80297c951a7f0ff  LICENSE.txt

package/libglew/libglew.mk

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+################################################################################
+#
+# libglew
+#
+################################################################################
+
+LIBGLEW_VERSION = 2.2.0
+LIBGLEW_SOURCE = glew-$(LIBGLEW_VERSION).tgz
+LIBGLEW_SITE = https://github.com/nigels-com/glew/releases/download/glew-$(LIBGLEW_VERSION)
+LIBGLEW_LICENSE = BSD-3-Clause, MIT
+LIBGLEW_LICENSE_FILES = LICENSE.txt
+LIBGLEW_INSTALL_STAGING = YES
+LIBGLEW_DEPENDENCIES = libgl xlib_libX11 xlib_libXext xlib_libXi xlib_libXmu
+
+# using $TARGET_CONFIGURE_OPTS breaks compilation
+define LIBGLEW_BUILD_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(@D) \
+		GLEW_NO_GLU="-DGLEW_NO_GLU" \
+		GLEW_DEST="/usr" LIBDIR="/usr/lib" \
+		AR="$(TARGET_AR)" CC="$(TARGET_CC)" \
+		LD="$(TARGET_CC)" STRIP="$(TARGET_STRIP)" \
+		POPT="$(TARGET_CFLAGS)" LDFLAGS.EXTRA="$(TARGET_LDFLAGS)"
+endef
+
+define LIBGLEW_INSTALL_STAGING_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(@D) \
+		GLEW_NO_GLU="-DGLEW_NO_GLU" \
+		GLEW_DEST="$(STAGING_DIR)/usr" LIBDIR="$(STAGING_DIR)/usr/lib" \
+		$(TARGET_CONFIGURE_OPTS) install
+endef
+
+define LIBGLEW_INSTALL_TARGET_CMDS
+	$(TARGET_MAKE_ENV) $(MAKE) -C $(@D) \
+		GLEW_NO_GLU="-DGLEW_NO_GLU" \
+		GLEW_DEST="$(TARGET_DIR)/usr" LIBDIR="$(TARGET_DIR)/usr/lib" \
+		$(TARGET_CONFIGURE_OPTS) install
+endef
+
+$(eval $(generic-package))