initial buildroot for linux 5.15

package/webp/Config.in

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+config BR2_PACKAGE_WEBP
+	bool "webp"
+	help
+	  WebP is a new image format that provides lossless and lossy
+	  compression for images on the web
+
+	  https://developers.google.com/speed/webp/
+
+if BR2_PACKAGE_WEBP
+
+config BR2_PACKAGE_WEBP_DEMUX
+	bool "webpdemux"
+	help
+	  Demux is a part of WebPMux for extraction and manipulation
+	  of an extended format WebP file, which can have features
+	  like color profile, metadata and animation.
+
+config BR2_PACKAGE_WEBP_MUX
+	bool "webpmux"
+	help
+	  Mux is a part of WebPMux for creation and manipulation
+	  of an extended format WebP file, which can have features
+	  like color profile, metadata and animation.
+
+endif

package/webp/webp.hash

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+# Locally calculated
+sha256  808b98d2f5b84e9b27fdef6c5372dac769c3bda4502febbfa5031bd3c4d7d018  libwebp-1.2.1.tar.gz
+sha256  5aec868f669e384a22372a4e8a1a6cd7d44c64cd451f960ca69cc170d1e13acf  COPYING

package/webp/webp.mk

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+################################################################################
+#
+# webp
+#
+################################################################################
+
+WEBP_VERSION = 1.2.1
+WEBP_SOURCE = libwebp-$(WEBP_VERSION).tar.gz
+WEBP_SITE = http://downloads.webmproject.org/releases/webp
+WEBP_LICENSE = BSD-3-Clause
+WEBP_LICENSE_FILES = COPYING
+WEBP_CPE_ID_VENDOR = webmproject
+WEBP_CPE_ID_PRODUCT = libwebp
+WEBP_INSTALL_STAGING = YES
+
+WEBP_CONF_OPTS += \
+	--with-jpegincludedir=$(STAGING_DIR)/usr/include \
+	--with-jpeglibdir=$(STAGING_DIR)/usr/lib \
+	--with-tiffincludedir=$(STAGING_DIR)/usr/include \
+	--with-tifflibdir=$(STAGING_DIR)/usr/lib
+
+ifeq ($(BR2_PACKAGE_WEBP_DEMUX),y)
+WEBP_CONF_OPTS += --enable-libwebpdemux
+else
+WEBP_CONF_OPTS += --disable-libwebpdemux
+endif
+
+ifeq ($(BR2_PACKAGE_WEBP_MUX),y)
+WEBP_CONF_OPTS += --enable-libwebpmux
+else
+WEBP_CONF_OPTS += --disable-libwebpmux
+endif
+
+ifeq ($(BR2_PACKAGE_GIFLIB),y)
+WEBP_DEPENDENCIES += giflib
+WEBP_CONF_OPTS += --enable-gif
+else
+WEBP_CONF_OPTS += --disable-gif
+endif
+
+ifeq ($(BR2_PACKAGE_LIBFREEGLUT),y)
+WEBP_DEPENDENCIES += libfreeglut
+WEBP_CONF_OPTS += --enable-gl
+else
+WEBP_CONF_OPTS += --disable-gl
+endif
+
+ifeq ($(BR2_PACKAGE_LIBPNG),y)
+WEBP_DEPENDENCIES += libpng
+WEBP_CONF_ENV += ac_cv_path_LIBPNG_CONFIG=$(STAGING_DIR)/usr/bin/libpng-config
+else
+WEBP_CONF_ENV += ac_cv_path_LIBPNG_CONFIG=/bin/false
+endif
+
+WEBP_DEPENDENCIES += $(if $(BR2_PACKAGE_JPEG),jpeg)
+WEBP_DEPENDENCIES += $(if $(BR2_PACKAGE_TIFF),tiff)
+
+$(eval $(autotools-package))