unzip: new package

Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Cc: Romain Naour <romain.naour@openwide.fr>
Cc: Jan Pedersen <jp@jp-embedded.com>
Cc: Arnout Vandecappelle <arnout@mind.be>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/Config.in

@@ -55,6 +55,9 @@ endif
 	source "package/lz4/Config.in"
 	source "package/lzip/Config.in"
 	source "package/lzop/Config.in"
+if BR2_PACKAGE_BUSYBOX_SHOW_OTHERS
+	source "package/unzip/Config.in"
+endif
 	source "package/xz/Config.in"
 	source "package/zip/Config.in"
 endmenu

package/unzip/0001-Add-a-CMakeFile.txt-to-ease-cross-compilation.patch

@@ -0,0 +1,53 @@
+From 992a497e9c5c421d3931e02a01e9d7c159f27135 Mon Sep 17 00:00:00 2001
+From: Luca Ceresoli <luca@lucaceresoli.net>
+Date: Thu, 26 Nov 2015 12:49:10 +0100
+Subject: [PATCH] Add a CMakeFile.txt to ease cross-compilation
+
+Info-ZIP's UnZip 6.0 has a complex, hand-crafted Makefile with a
+companion configure script which try to support an extremely wide
+range of UNIX-like operating systems. The result is an overly complex
+mass of code that does not support cross-compilation in several ways.
+
+Zip 3.0 has a similar build system, and has as many as 6 patches in
+Buildroot to cross-compile [0]. UnZip fails at building even with
+these patches adapted and a few more on top of them.
+
+Instead of tweaking and fixing a huge and complex build system, skip
+it entirely and add a pretty simple CMakeLists.txt that cross-compiles
+smoothly using CMake. It also preserves all of the Buildroot-provided
+build options and flags as the original Makefile does.
+
+[0] http://git.buildroot.net/buildroot/tree/package/infozip?id=2015.11-rc3
+
+Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
+---
+ CMakeLists.txt | 17 +++++++++++++++++
+ 1 file changed, 17 insertions(+)
+ create mode 100644 CMakeLists.txt
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+new file mode 100644
+index 0000000..27951b4
+--- /dev/null
++++ b/CMakeLists.txt
+@@ -0,0 +1,17 @@
++cmake_minimum_required(VERSION 2.8)
++INCLUDE(CheckFunctionExists)
++
++project(unzip C)
++
++CHECK_FUNCTION_EXISTS(lchmod HAVE_LCHMOD)
++if(NOT HAVE_LCHMOD)
++add_definitions("-DNO_LCHMOD")
++endif()
++
++set(UNZIP_SOURCES unzip.c crc32.c crypt.c envargs.c explode.c
++  extract.c fileio.c globals.c inflate.c list.c match.c process.c
++  ttyio.c ubz2err.c unreduce.c unshrink.c zipinfo.c unix/unix.c)
++
++include_directories(.)
++add_executable(unzip ${UNZIP_SOURCES})
++install(TARGETS unzip DESTINATION bin)
+-- 
+1.9.1
+

package/unzip/Config.in

@@ -0,0 +1,11 @@
+config BR2_PACKAGE_UNZIP
+	bool "unzip"
+	help
+	  UnZip is an extraction utility for archives compressed in
+	  .zip format (also called "zipfiles"). Although highly
+	  compatible both with PKWARE's PKZIP and PKUNZIP utilities
+	  for MS-DOS and with Info-ZIP's own Zip program, our primary
+	  objectives have been portability and non-MSDOS
+	  functionality.
+
+	  http://www.info-zip.org/UnZip.html

package/unzip/unzip.hash

@@ -0,0 +1,2 @@
+# Locally computed:
+sha256 036d96991646d0449ed0aa952e4fbe21b476ce994abc276e49d30e686708bd37 unzip60.tgz

package/unzip/unzip.mk

@@ -0,0 +1,15 @@
+################################################################################
+#
+# unzip
+#
+################################################################################
+
+UNZIP_VERSION = 60
+UNZIP_SOURCE = unzip$(UNZIP_VERSION).tgz
+UNZIP_SITE = ftp://ftp.info-zip.org/pub/infozip/src
+# take precedence over busybox implementation
+UNZIP_DEPENDENCIES = $(if $(BR2_PACKAGE_BUSYBOX),busybox)
+UNZIP_LICENSE = Info-ZIP
+UNZIP_LICENSE_FILES = LICENSE
+
+$(eval $(cmake-package))