python-crc16: new package

A python library that calculates CRC checksums of the CCITT/XModem
variant.

Signed-off-by: Michael Rommel <rommel@layer-7.net>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/Config.in

@@ -385,6 +385,7 @@ source "package/python/Config.in"
 if BR2_PACKAGE_PYTHON
 menu "external python modules"
 source "package/python-bottle/Config.in"
+source "package/python-crc16/Config.in"
 source "package/python-dpkt/Config.in"
 source "package/python-id3/Config.in"
 source "package/python-mad/Config.in"

package/python-crc16/Config.in

@@ -0,0 +1,11 @@
+config BR2_PACKAGE_PYTHON_CRC16
+	bool "python-crc16"
+	depends on BR2_PACKAGE_PYTHON
+	help
+	  This library calculates only CRC16 (16-bit codes) and the
+	  only supported variant at the moment is CRC-CCITT (XModem).
+	  CRC is a way of detecting accidental changes in data storage
+	  or transmission. There are many variants of CRC and CRC16,
+	  in particular.
+
+	  http://pycrc16.googlecode.com/

package/python-crc16/python-crc16.mk

@@ -0,0 +1,35 @@
+################################################################################
+#
+# python-crc16
+#
+################################################################################
+
+PYTHON_CRC16_VERSION = 0.1.1
+PYTHON_CRC16_SOURCE = crc16-$(PYTHON_CRC16_VERSION).tar.gz
+PYTHON_CRC16_SITE = http://pycrc16.googlecode.com/files/
+PYTHON_CRC16_LICENSE = LGPLv3+
+PYTHON_CRC16_LICENSE_FILES = COPYING.txt
+PYTHON_CRC16_DEPENDENCIES = python host-python
+
+PYTHON_CRC16_PARAMS = CC="$(TARGET_CC)" \
+		CFLAGS="$(TARGET_CFLAGS)" \
+		LDSHARED="$(TARGET_CC) -shared" \
+		LDFLAGS="$(TARGET_LDFLAGS) -L$(STAGING_DIR)/usr/lib" \
+		CROSS_COMPILING=yes \
+		_python_sysroot=$(STAGING_DIR) \
+		_python_srcdir=$(PYTHON_DIR) \
+		_python_prefix=/usr \
+		_python_exec_prefix=/usr
+
+define PYTHON_CRC16_BUILD_CMDS
+	(cd $(@D); $(PYTHON_CRC16_PARAMS) \
+		$(HOST_DIR)/usr/bin/python setup.py build)
+endef
+
+define PYTHON_CRC16_INSTALL_TARGET_CMDS
+	(cd $(@D); $(PYTHON_CRC16_PARAMS) \
+		$(HOST_DIR)/usr/bin/python setup.py install \
+		--prefix=$(TARGET_DIR)/usr)
+endef
+
+$(eval $(generic-package))