Add recipe for xz

recipes/xz/01-no-poll.patch

@@ -0,0 +1,55 @@
+diff -ru source/src/xz/file_io.c source-new/src/xz/file_io.c
+--- source/src/xz/file_io.c	2016-12-30 03:13:57.000000000 -0800
++++ source-new/src/xz/file_io.c	2017-08-08 12:34:08.453700076 -0700
+@@ -17,7 +17,7 @@
+ #ifdef TUKLIB_DOSLIKE
+ #	include <io.h>
+ #else
+-#	include <poll.h>
++//#	include <poll.h>
+ static bool warn_fchown;
+ #endif
+ 
+@@ -222,7 +222,7 @@
+ #endif // ENABLE_SANDBOX
+ 
+ 
+-#ifndef TUKLIB_DOSLIKE
++#if 0
+ /// \brief      Waits for input or output to become available or for a signal
+ ///
+ /// This uses the self-pipe trick to avoid a race condition that can occur
+@@ -704,6 +704,7 @@
+ 	// If it is something else than a regular file, wait until
+ 	// there is input available. This way reading from FIFOs
+ 	// will work when open() is used with O_NONBLOCK.
++#if 0
+ 	if (!S_ISREG(pair->src_st.st_mode)) {
+ 		signals_unblock();
+ 		const io_wait_ret ret = io_wait(pair, -1, true);
+@@ -713,6 +714,7 @@
+ 			goto error;
+ 	}
+ #endif
++#endif
+ 
+ #ifdef HAVE_POSIX_FADVISE
+ 	// It will fail with some special files like FIFOs but that is fine.
+@@ -1127,7 +1129,7 @@
+ 				continue;
+ 			}
+ 
+-#ifndef TUKLIB_DOSLIKE
++#if 0
+ 			if (IS_EAGAIN_OR_EWOULDBLOCK(errno)) {
+ 				const io_wait_ret ret = io_wait(pair,
+ 						mytime_get_flush_timeout(),
+@@ -1215,7 +1217,7 @@
+ 				continue;
+ 			}
+ 
+-#ifndef TUKLIB_DOSLIKE
++#if 0
+ 			if (IS_EAGAIN_OR_EWOULDBLOCK(errno)) {
+ 				if (io_wait(pair, -1, false) == IO_WAIT_MORE)
+ 					continue;

recipes/xz/02-o_noctty.patch

@@ -0,0 +1,14 @@
+diff -ru source/src/common/tuklib_open_stdxxx.c source-new/src/common/tuklib_open_stdxxx.c
+--- source/src/common/tuklib_open_stdxxx.c	2016-12-30 03:08:20.000000000 -0800
++++ source-new/src/common/tuklib_open_stdxxx.c	2017-08-08 12:38:10.703829409 -0700
+@@ -35,8 +35,8 @@
+ 			// writing to stdin would fail. However, /dev/full
+ 			// is Linux specific, and if the program tries to
+ 			// write to stdin, there's already a problem anyway.
+-			const int fd = open("/dev/null", O_NOCTTY
+-					| (i == 0 ? O_WRONLY : O_RDONLY));
++			const int fd = open("/dev/null",
++					(i == 0 ? O_WRONLY : O_RDONLY));
+ 
+ 			if (fd != i) {
+ 				if (fd != -1)

recipes/xz/03-no-signals.patch

@@ -0,0 +1,47 @@
+diff -ru source/src/xz/message.c source-new/src/xz/message.c
+--- source/src/xz/message.c	2016-12-30 03:08:20.000000000 -0800
++++ source-new/src/xz/message.c	2017-08-08 12:44:30.584447139 -0700
+@@ -135,7 +135,7 @@
+ 	}
+ */
+ 
+-#ifdef SIGALRM
++#if 0
+ 	// Establish the signal handlers which set a flag to tell us that
+ 	// progress info should be updated.
+ 	struct sigaction sa;
+diff -ru source/src/xz/signals.c source-new/src/xz/signals.c
+--- source/src/xz/signals.c	2016-12-30 03:08:20.000000000 -0800
++++ source-new/src/xz/signals.c	2017-08-08 12:41:59.624111395 -0700
+@@ -53,6 +53,7 @@
+ extern void
+ signals_init(void)
+ {
++#if 0
+ 	// List of signals for which we establish the signal handler.
+ 	static const int sigs[] = {
+ 		SIGINT,
+@@ -112,6 +113,7 @@
+ 	signals_are_initialized = true;
+ 
+ 	return;
++#endif
+ }
+ 
+ 
+@@ -152,6 +154,7 @@
+ extern void
+ signals_exit(void)
+ {
++#if 0
+ 	const int sig = exit_signal;
+ 
+ 	if (sig != 0) {
+@@ -171,6 +174,7 @@
+ 	}
+ 
+ 	return;
++#endif
+ }
+ 
+ #else

recipes/xz/04-no-fchown-fchmod.patch

@@ -0,0 +1,12 @@
+diff -ru source/src/xz/file_io.c source-new/src/xz/file_io.c
+--- source/src/xz/file_io.c	2016-12-30 03:13:57.000000000 -0800
++++ source-new/src/xz/file_io.c	2017-08-08 12:49:15.225290972 -0700
+@@ -351,7 +351,7 @@
+ io_copy_attrs(const file_pair *pair)
+ {
+ 	// Skip chown and chmod on Windows.
+-#ifndef TUKLIB_DOSLIKE
++#if 0
+ 	// This function is more tricky than you may think at first.
+ 	// Blindly copying permissions may permit users to access the
+ 	// destination file who didn't have permission to access the

recipes/xz/recipe.sh

@@ -0,0 +1,36 @@
+VERSION=5.2.3
+TAR=https://tukaani.org/xz/xz-$VERSION.tar.gz
+
+function recipe_version {
+    echo "$VERSION"
+    skip=1
+}
+
+function recipe_update {
+    echo "skipping update"
+    skip=1
+}
+
+function recipe_build {
+    wget -O build-aux/config.sub http://git.savannah.gnu.org/cgit/config.git/plain/config.sub
+    ./configure --host=${HOST} --prefix=/ --enable-threads=no
+    make
+    skip=1
+}
+
+function recipe_test {
+    echo "skipping test"
+    skip=1
+}
+
+function recipe_clean {
+    make clean
+    skip=1
+}
+
+function recipe_stage {
+    dest="$(realpath $1)"
+    make DESTDIR="$dest" install
+    rm -rf "$dest/share"
+    skip=1
+}