webp: new package

From: Gilles Talis <[email protected]>

WebP is a new image format that provides lossless and lossy compression for images on the web

---
 package/Config.in      |    1 +
 package/webp/Config.in |    7 +++++++
 package/webp/webp.mk   |   22 ++++++++++++++++++++++
 3 files changed, 30 insertions(+), 0 deletions(-)
 create mode 100644 package/webp/Config.in
 create mode 100644 package/webp/webp.mk

index ba03b3c..1e8c4da 100644
@@ -433,6 +433,7 @@ source "package/pango/Config.in"
 source "package/pixman/Config.in"
 source "package/tiff/Config.in"
 source "package/webkit/Config.in"
+source "package/webp/Config.in"
 source "package/zxing/Config.in"
 endmenu
 

new file mode 100644
index 0000000..a2acdff
@@ -0,0 +1,7 @@
+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/

new file mode 100644
index 0000000..3dcb13c
@@ -0,0 +1,22 @@
+#####################################################################
+#
+# webp
+#
+#####################################################################
+
+WEBP_VERSION = 0.2.1
+WEBP_SOURCE = libwebp-$(WEBP_VERSION).tar.gz
+WEBP_SITE = https://webp.googlecode.com/files
+WEBP_LICENSE = BSD-3c
+WEBP_LICENSE_FILES = COPYING
+WEBP_INSTALL_STAGING = YES
+
+ifeq ($(BR2_PACKAGE_LIBPNG),y)
+WEBP_DEPENDENCIES += libpng
+WEBP_CONF_ENV += ac_cv_path_LIBPNG_CONFIG=$(STAGING_DIR)/usr/bin/libpng-config
+endif
+
+WEBP_DEPENDENCIES += $(if $(BR2_PACKAGE_JPEG),jpeg)
+WEBP_DEPENDENCIES += $(if $(BR2_PACKAGE_TIFF),tiff)
+
+$(eval $(autotools-package))

1.7.4.1

gilles> From: Gilles Talis <[email protected]> gilles> WebP is a new image format that provides lossless gilles> and lossy compression for images on the web

gilles> +##################################################################### gilles> +#
gilles> +# webp
gilles> +#
gilles> +##################################################################### gilles> +
gilles> +WEBP_VERSION = 0.2.1
gilles> +WEBP_SOURCE = libwebp-$(WEBP_VERSION).tar.gz
gilles> +WEBP_SITE = https://webp.googlecode.com/files
gilles> +WEBP_LICENSE = BSD-3c
gilles> +WEBP_LICENSE_FILES = COPYING
gilles> +WEBP_INSTALL_STAGING = YES
gilles> +
gilles> +ifeq ($(BR2_PACKAGE_LIBPNG),y)
gilles> +WEBP_DEPENDENCIES += libpng
gilles> +WEBP_CONF_ENV += ac_cv_path_LIBPNG_CONFIG=$(STAGING_DIR)/usr/bin/libpng-config gilles> +endif

So what happens when you don't have libpng enabled but do have libpng-config on the host? Is there no explicit configure options to turn off png support (alternatively, point LIBPNG_CONFIG to /bin/false or similar).

gilles> +
gilles> +WEBP_DEPENDENCIES += $(if $(BR2_PACKAGE_JPEG),jpeg) gilles> +WEBP_DEPENDENCIES += $(if $(BR2_PACKAGE_TIFF),tiff)

Same here. You don't depend on host-pkgconf, so it presumably doesn't use that to figure out availability of jpeg/tiff.

Bye, Peter Korsgaard

Dear Peter,

+#####################################################################

+#####################################################################

ac_cv_path_LIBPNG_CONFIG=$(STAGING_DIR)/usr/bin/libpng-config

There's no way to disable any of the options mentioned in that patch (PNG, JPEG, TIFF).

in my setup, the "configure" step returns cross-compilation errors, thus removes PNG from the available options.

I hesitated quite a bit before embedding LIBPNG_CONFIG within BR2_PACKAGE_LIBPNG flag. My first intention was to force this config to always point to the staging dir. Is that what you are suggesting?

Same here. I can force the paths to JPEG and TIFF include and lib to always point to staging dir. Was my first intention, but it seemed to work out fine without doing that. Do you think it would be preferrable to force these paths?

thanks
Gilles.
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Hi,

Gilles> Same here. I can force the paths to JPEG and TIFF include and Gilles> lib to always point to staging dir. Was my first intention, but Gilles> it seemed to work out fine without doing that. Do you think it Gilles> would be preferrable to force these paths?

I'm concerned it will fail if you build for the same architecture as your host (E.G. for a PC), haven't enabled png/tiff/jpeg in buildroot but DO have the development libraries installed on the host.

I'll give it a test later today.

Bye, Peter Korsgaard