Merge pull request #37 from wookietreiber/autotools-build

autotools build

.gitignore

@@ -1,9 +1,40 @@
+# created by autoscan
+
+/autom4te.cache
+/autoscan.log
+/configure.scan
+
+# created by autoreconf -fi (includes autoconf, automake, libtool)
+
+Makefile.in
+/aclocal.m4
+/autom4te.cache
+/compile
+/config.guess
+/config.h.in*
+/config.sub
+/configure
+/depcomp
+/install-sh
+/ltmain.sh
+/missing
+
+# created by configure
+
+Makefile
+/config.h
+/config.log
+/config.status
+/libtool
+/stamp-h1
+.deps
+
+# created by make
+
+*.la
+*.lo
+*.o
+.libs
 pixz
 pixz.1
-dist
+*.tar.*
-pixz-*.tgz
-
-*.o
-
-libs
-tars

Makefile

@@ -1,56 +0,0 @@
-VERSION = 1.0.2
-DISTNAME = pixz-$(VERSION)
-TARBALL = $(DISTNAME).tgz
-
-ifneq ($(shell gcc -v 2>&1 | grep 'Apple Inc'),)
-	APPLE=1
-endif
-
-OPT = -g -O0
-MYCFLAGS = $(patsubst %,-I%/include,$(LIBPREFIX)) $(OPT) -std=gnu99 \
-	-Wall -Wno-unknown-pragmas -DPIXZ_VERSION='"$(VERSION)"'
-MYLDFLAGS = $(patsubst %,-L%/lib,$(LIBPREFIX)) $(OPT) -Wall
-
-THREADS = -lpthread
-LIBADD = $(THREADS) -lm -llzma -larchive
-
-CC = gcc
-COMPILE = $(CC) $(MYCFLAGS) $(CFLAGS) -c -o
-LD = $(CC) $(MYLDFLAGS) $(LDFLAGS) -o
-
-ifdef APPLE
-ifeq ($(CC),gcc)
-	MYLDFLAGS += -search_paths_first
-endif
-endif
-
-PROGS = pixz
-MANPAGE = pixz.1
-COMMON = common.o endian.o cpu.o read.o write.o list.o
-
-all: $(PROGS)
-
-%.o: %.c pixz.h
-	$(COMPILE) $@ $<
-
-$(PROGS): %: %.o $(COMMON)
-	$(LD) $@ $^ $(LIBADD)
-
-clean:
-	rm -rf *.o $(PROGS) $(MANPAGE) $(TARBALL) dist
-
-$(MANPAGE): pixz.1.asciidoc
-	a2x -a manversion=$(VERSION) -f manpage $<
-
-dist:
-	rm -rf dist
-	mkdir -p dist
-	git archive --prefix=$(DISTNAME)/ --format=tar HEAD | tar -x -C dist
-
-$(TARBALL): $(MANPAGE) dist
-	cp pixz.1 dist/$(DISTNAME)/
-	tar -czf $(TARBALL) -C dist $(DISTNAME)
-
-tarball: $(TARBALL)
-
-.PHONY: all clean tarball dist

Makefile.am

@@ -0,0 +1,5 @@
+ACLOCAL_AMFLAGS = -I m4
+
+SUBDIRS = src
+
+EXTRA_DIST = LICENSE m4 NEWS README test.sh TODO

README

@@ -1,80 +0,0 @@
-Pixz (pronounced 'pixie') is a parallel, indexing version of XZ
-
-Repository: https://github.com/vasi/pixz
-Downloads: https://sourceforge.net/projects/pixz/files/
-
-
-The existing XZ Utils ( http://tukaani.org/xz/ ) provide great compression in the .xz file format, but they have two significant problems:
-
-* They are single-threaded, while most users nowadays have multi-core computers.
-* The .xz files they produce are just one big block of compressed data, rather than a collection of smaller blocks. This makes random access to the original data impossible.
-
-
-With pixz, both these problems are solved. The most useful commands:
-
-$ pixz foo.tar foo.tpxz         # Compress and index a tarball, multi-core
-$ pixz -l foo.tpxz              # Very quickly list the contents of the compressed tarball
-$ pixz -d foo.tpxz foo.tar      # Decompress it, multi-core
-$ pixz -x dir/file < foo.tpxz | tar x   # Very quickly extract a file, multi-core.
-                                        # Also verifies that contents match index.
-
-$ tar -Ipixz -cf foo.tpxz foo           # Create a tarball using pixz for multi-core compression
-
-$ pixz bar bar.xz           # Compress a non-tarball, multi-core
-$ pixz -d bar.xz bar        # Decompress it, multi-core
-
-
-Specifying input and output:
-
-$ pixz < foo.tar > foo.tpxz     # Same as 'pixz foo.tar foo.tpxz'
-$ pixz -i foo.tar -o foo.tpxz   # Ditto. These both work for -x, -d and -l too, eg:
-
-$ pixz -x -i foo.tpxz -o foo.tar file1 file2 ... # Extract the files from foo.tpxz into foo.tar
-
-$ pixz foo.tar                  # Compress it to foo.tpxz, removing the original
-$ pixz -d foo.tpxz              # Extract it to foo.tar, removing the original
-
-
-Other flags:
-
-$ pixz -1 foo.tar           # Faster, worse compression
-$ pixz -9 foo.tar           # Better, slower compression
-$ pixz -p 2 foo.tar         # Cap the number of threads at 2
-
-$ pixz -t foo.tar           # Compress but don't treat it as a tarball (don't index it)
-$ pixz -d -t foo.tpxz       # Decompress foo, don't check that contents match index
-$ pixz -l -t foo.tpxz       # List the xz blocks instead of files
-
-For even more tuning flags, check the manual page.
-
-
-Compare to:
-    plzip
-        * About equally complex, efficient
-        * lzip format seems less-used
-        * Version 1 is theoretically indexable...I think
-    ChopZip
-        * Python, much simpler
-        * More flexible, supports arbitrary compression programs
-        * Uses streams instead of blocks, not indexable
-        * Splits input and then combines output, much higher disk usage 
-    pxz
-        * Simpler code
-        * Uses OpenMP instead of pthreads
-        * Uses streams instead of blocks, not indexable
-        * Uses temp files and doesn't combine them until the whole file is compressed, high disk/memory usage
-
-Comparable tools for other compression algorithms:
-    pbzip2
-        * Not indexable
-        * Appears slow
-        * bzip2 algorithm is non-ideal
-    pigz
-        * Not indexable
-    dictzip, idzip
-        * Not parallel
-
-
-Requirements:
-    * libarchive 2.8 or later
-    * liblzma 4.999.9-beta-212 or later (from the xz distribution)

README.md

@@ -0,0 +1,182 @@
+pixz
+====
+
+Pixz (pronounced *pixie*) is a parallel, indexing version of `xz`.
+
+Repository: https://github.com/vasi/pixz
+
+Downloads: https://github.com/vasi/pixz/releases
+
+pixz vs xz
+----------
+
+The existing [XZ Utils](http://tukaani.org/xz/) provide great compression in the `.xz` file format,
+but they have two significant problems:
+
+-   they are single-threaded, while most users nowadays have multi-core computers
+-   the `.xz` files they produce are just one big block of compressed data, rather than a collection
+    of smaller blocks which makes random access to the original data impossible
+
+With pixz, both these problems are solved.
+
+Building pixz
+-------------
+
+General help about the building process's configuration step can be acquired via:
+
+```
+./configure --help
+```
+
+### Dependencies
+
+-   pthreads
+-   liblzma 4.999.9-beta-212 or later (from the xz distribution)
+-   libarchive 2.8 or later
+-   AsciiDoc to generate the man page
+
+### Build from Release Tarball
+
+```
+./configure
+make
+make install
+```
+
+You many need `sudo` permissions to run `make install`.
+
+### Build from GitHub
+
+```
+git clone https://github.com/vasi/pixz.git
+cd pixz
+./autogen.sh
+./configure
+make
+make install
+```
+
+You many need `sudo` permissions to run `make install`.
+
+Usage
+-----
+
+### Single Files
+
+Compress a single file (no tarball, just compression), multi-core:
+
+    pixz bar bar.xz
+
+Decompress it, multi-core:
+
+    pixz -d bar.xz bar
+
+### Tarballs
+
+Compress and index a tarball, multi-core:
+
+    pixz foo.tar foo.tpxz
+
+Very quickly list the contents of the compressed tarball:
+
+    pixz -l foo.tpxz
+
+Decompress the tarball, multi-core:
+
+    pixz -d foo.tpxz foo.tar
+
+Very quickly extract a single file, multi-core, also verifies that contents match index:
+
+    pixz -x dir/file < foo.tpxz | tar x
+
+Create a tarball using pixz for multi-core compression:
+
+    tar -Ipixz -cf foo.tpxz foo/
+
+### Specifying Input and Output
+
+These are the same (also work for `-x`, `-d` and `-l` as well):
+
+    pixz foo.tar foo.tpxz
+    pixz < foo.tar > foo.tpxz
+    pixz -i foo.tar -o foo.tpxz
+
+Extract the files from `foo.tpxz` into `foo.tar`:
+
+    pixz -x -i foo.tpxz -o foo.tar file1 file2 ...
+
+Compress to `foo.tpxz`, removing the original:
+
+    pixz foo.tar
+
+Extract to `foo.tar`, removing the original:
+
+    pixz -d foo.tpxz
+
+### Other Flags
+
+Faster, worse compression:
+
+    pixz -1 foo.tar
+
+Better, slower compression:
+
+    pixz -9 foo.tar
+
+Use exactly 2 threads:
+
+    pixz -p 2 foo.tar
+
+Compress, but do not treat it as a tarball, i.e. do not index it:
+
+    pixz -t foo.tar
+
+Decompress, but do not check that contents match index:
+
+    pixz -d -t foo.tpxz
+
+List the xz blocks instead of files:
+
+    pixz -l -t foo.tpxz
+
+For even more tuning flags, check the manual page:
+
+    man pixz
+
+Comparison to other Tools
+-------------------------
+
+### plzip
+
+-   about equally complex and efficient
+-   lzip format seems less-used
+-   version 1 is theoretically indexable, I think
+
+### ChopZip
+
+-   written in Python, much simpler
+-   more flexible, supports arbitrary compression programs
+-   uses streams instead of blocks, not indexable
+-   splits input and then combines output, much higher disk usage
+
+### pxz
+
+-   simpler code
+-   uses OpenMP instead of pthreads
+-   uses streams instead of blocks, not indexable
+-   uses temporary files and does not combine them until the whole file is compressed, high disk and
+    memory usage
+
+### pbzip2
+
+-   not indexable
+-   appears slow
+-   bzip2 algorithm is non-ideal
+
+### pigz
+
+-   not indexable
+
+### dictzip, idzip
+
+-   not parallel

TODO

@@ -5,7 +5,6 @@ CLEANUP
 		* error handling
 		* signal handling
 		* globals
-	* autoconf
 	* optimized settings
 		* memory limit
 		* cpu number

autogen.sh

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+autoreconf -fi

configure.ac

@@ -0,0 +1,50 @@
+#                                               -*- Autoconf -*-
+# Process this file with autoconf to produce a configure script.
+
+AC_PREREQ([2.69])
+AC_INIT([pixz], [1.0.2], [https://github.com/vasi/pixz/issues])
+AC_CONFIG_MACRO_DIRS([m4])
+AC_CONFIG_SRCDIR([src/pixz.c])
+AC_CONFIG_HEADERS([config.h])
+
+# Automake invocation.
+AM_INIT_AUTOMAKE([foreign])
+
+# Checks for programs.
+AC_PROG_CC_STDC
+AC_CHECK_PROG(A2X, a2x, a2x, [])
+if test "x$A2X" = x ; then
+  AC_MSG_ERROR([AsciiDoc not found.])
+fi
+
+# Checks for libraries.
+AC_CHECK_LIB([m], [ceil])
+AX_PTHREAD
+PKG_CHECK_MODULES(LIBARCHIVE, libarchive)
+PKG_CHECK_MODULES(LZMA, liblzma)
+
+# Checks for header files.
+AC_CHECK_HEADERS([stdint.h stdlib.h string.h unistd.h])
+
+# Checks for typedefs, structures, and compiler characteristics.
+AC_CHECK_HEADER_STDBOOL
+AC_TYPE_OFF_T
+AC_TYPE_SIZE_T
+AC_TYPE_SSIZE_T
+AC_TYPE_UINT16_T
+AC_TYPE_UINT32_T
+AC_TYPE_UINT64_T
+AC_TYPE_UINT8_T
+
+# Checks for operating system services or capabilities.
+AC_SYS_LARGEFILE
+
+# Checks for library functions.
+AC_FUNC_MALLOC
+AC_FUNC_REALLOC
+AC_FUNC_STRTOD
+AC_CHECK_FUNCS([memchr memmove memset strtol])
+
+AC_CONFIG_FILES([Makefile
+                 src/Makefile])
+AC_OUTPUT

m4/ax_pthread.m4

@@ -0,0 +1,332 @@
+# ===========================================================================
+#        http://www.gnu.org/software/autoconf-archive/ax_pthread.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
+#
+# DESCRIPTION
+#
+#   This macro figures out how to build C programs using POSIX threads. It
+#   sets the PTHREAD_LIBS output variable to the threads library and linker
+#   flags, and the PTHREAD_CFLAGS output variable to any special C compiler
+#   flags that are needed. (The user can also force certain compiler
+#   flags/libs to be tested by setting these environment variables.)
+#
+#   Also sets PTHREAD_CC to any special C compiler that is needed for
+#   multi-threaded programs (defaults to the value of CC otherwise). (This
+#   is necessary on AIX to use the special cc_r compiler alias.)
+#
+#   NOTE: You are assumed to not only compile your program with these flags,
+#   but also link it with them as well. e.g. you should link with
+#   $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS $LIBS
+#
+#   If you are only building threads programs, you may wish to use these
+#   variables in your default LIBS, CFLAGS, and CC:
+#
+#     LIBS="$PTHREAD_LIBS $LIBS"
+#     CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+#     CC="$PTHREAD_CC"
+#
+#   In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute constant
+#   has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to that name
+#   (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
+#
+#   Also HAVE_PTHREAD_PRIO_INHERIT is defined if pthread is found and the
+#   PTHREAD_PRIO_INHERIT symbol is defined when compiling with
+#   PTHREAD_CFLAGS.
+#
+#   ACTION-IF-FOUND is a list of shell commands to run if a threads library
+#   is found, and ACTION-IF-NOT-FOUND is a list of commands to run it if it
+#   is not found. If ACTION-IF-FOUND is not specified, the default action
+#   will define HAVE_PTHREAD.
+#
+#   Please let the authors know if this macro fails on any platform, or if
+#   you have any other suggestions or comments. This macro was based on work
+#   by SGJ on autoconf scripts for FFTW (http://www.fftw.org/) (with help
+#   from M. Frigo), as well as ac_pthread and hb_pthread macros posted by
+#   Alejandro Forero Cuervo to the autoconf macro repository. We are also
+#   grateful for the helpful feedback of numerous users.
+#
+#   Updated for Autoconf 2.68 by Daniel Richard G.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu>
+#   Copyright (c) 2011 Daniel Richard G. <skunk@iSKUNK.ORG>
+#
+#   This program is free software: you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation, either version 3 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License along
+#   with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+#serial 21
+
+AU_ALIAS([ACX_PTHREAD], [AX_PTHREAD])
+AC_DEFUN([AX_PTHREAD], [
+AC_REQUIRE([AC_CANONICAL_HOST])
+AC_LANG_PUSH([C])
+ax_pthread_ok=no
+
+# We used to check for pthread.h first, but this fails if pthread.h
+# requires special compiler flags (e.g. on True64 or Sequent).
+# It gets checked for in the link test anyway.
+
+# First of all, check if the user has set any of the PTHREAD_LIBS,
+# etcetera environment variables, and if threads linking works using
+# them:
+if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
+        save_CFLAGS="$CFLAGS"
+        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+        save_LIBS="$LIBS"
+        LIBS="$PTHREAD_LIBS $LIBS"
+        AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
+        AC_TRY_LINK_FUNC([pthread_join], [ax_pthread_ok=yes])
+        AC_MSG_RESULT([$ax_pthread_ok])
+        if test x"$ax_pthread_ok" = xno; then
+                PTHREAD_LIBS=""
+                PTHREAD_CFLAGS=""
+        fi
+        LIBS="$save_LIBS"
+        CFLAGS="$save_CFLAGS"
+fi
+
+# We must check for the threads library under a number of different
+# names; the ordering is very important because some systems
+# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
+# libraries is broken (non-POSIX).
+
+# Create a list of thread flags to try.  Items starting with a "-" are
+# C compiler flags, and other items are library names, except for "none"
+# which indicates that we try without any flags at all, and "pthread-config"
+# which is a program returning the flags for the Pth emulation library.
+
+ax_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
+
+# The ordering *is* (sometimes) important.  Some notes on the
+# individual items follow:
+
+# pthreads: AIX (must check this before -lpthread)
+# none: in case threads are in libc; should be tried before -Kthread and
+#       other compiler flags to prevent continual compiler warnings
+# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
+# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
+# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
+# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)
+# -pthreads: Solaris/gcc
+# -mthreads: Mingw32/gcc, Lynx/gcc
+# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
+#      doesn't hurt to check since this sometimes defines pthreads too;
+#      also defines -D_REENTRANT)
+#      ... -mt is also the pthreads flag for HP/aCC
+# pthread: Linux, etcetera
+# --thread-safe: KAI C++
+# pthread-config: use pthread-config program (for GNU Pth library)
+
+case ${host_os} in
+        solaris*)
+
+        # On Solaris (at least, for some versions), libc contains stubbed
+        # (non-functional) versions of the pthreads routines, so link-based
+        # tests will erroneously succeed.  (We need to link with -pthreads/-mt/
+        # -lpthread.)  (The stubs are missing pthread_cleanup_push, or rather
+        # a function called by this macro, so we could check for that, but
+        # who knows whether they'll stub that too in a future libc.)  So,
+        # we'll just look for -pthreads and -lpthread first:
+
+        ax_pthread_flags="-pthreads pthread -mt -pthread $ax_pthread_flags"
+        ;;
+
+        darwin*)
+        ax_pthread_flags="-pthread $ax_pthread_flags"
+        ;;
+esac
+
+# Clang doesn't consider unrecognized options an error unless we specify
+# -Werror. We throw in some extra Clang-specific options to ensure that
+# this doesn't happen for GCC, which also accepts -Werror.
+
+AC_MSG_CHECKING([if compiler needs -Werror to reject unknown flags])
+save_CFLAGS="$CFLAGS"
+ax_pthread_extra_flags="-Werror"
+CFLAGS="$CFLAGS $ax_pthread_extra_flags -Wunknown-warning-option -Wsizeof-array-argument"
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([int foo(void);],[foo()])],
+                  [AC_MSG_RESULT([yes])],
+                  [ax_pthread_extra_flags=
+                   AC_MSG_RESULT([no])])
+CFLAGS="$save_CFLAGS"
+
+if test x"$ax_pthread_ok" = xno; then
+for flag in $ax_pthread_flags; do
+
+        case $flag in
+                none)
+                AC_MSG_CHECKING([whether pthreads work without any flags])
+                ;;
+
+                -*)
+                AC_MSG_CHECKING([whether pthreads work with $flag])
+                PTHREAD_CFLAGS="$flag"
+                ;;
+
+                pthread-config)
+                AC_CHECK_PROG([ax_pthread_config], [pthread-config], [yes], [no])
+                if test x"$ax_pthread_config" = xno; then continue; fi
+                PTHREAD_CFLAGS="`pthread-config --cflags`"
+                PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
+                ;;
+
+                *)
+                AC_MSG_CHECKING([for the pthreads library -l$flag])
+                PTHREAD_LIBS="-l$flag"
+                ;;
+        esac
+
+        save_LIBS="$LIBS"
+        save_CFLAGS="$CFLAGS"
+        LIBS="$PTHREAD_LIBS $LIBS"
+        CFLAGS="$CFLAGS $PTHREAD_CFLAGS $ax_pthread_extra_flags"
+
+        # Check for various functions.  We must include pthread.h,
+        # since some functions may be macros.  (On the Sequent, we
+        # need a special flag -Kthread to make this header compile.)
+        # We check for pthread_join because it is in -lpthread on IRIX
+        # while pthread_create is in libc.  We check for pthread_attr_init
+        # due to DEC craziness with -lpthreads.  We check for
+        # pthread_cleanup_push because it is one of the few pthread
+        # functions on Solaris that doesn't have a non-functional libc stub.
+        # We try pthread_create on general principles.
+        AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>
+                        static void routine(void *a) { a = 0; }
+                        static void *start_routine(void *a) { return a; }],
+                       [pthread_t th; pthread_attr_t attr;
+                        pthread_create(&th, 0, start_routine, 0);
+                        pthread_join(th, 0);
+                        pthread_attr_init(&attr);
+                        pthread_cleanup_push(routine, 0);
+                        pthread_cleanup_pop(0) /* ; */])],
+                [ax_pthread_ok=yes],
+                [])
+
+        LIBS="$save_LIBS"
+        CFLAGS="$save_CFLAGS"
+
+        AC_MSG_RESULT([$ax_pthread_ok])
+        if test "x$ax_pthread_ok" = xyes; then
+                break;
+        fi
+
+        PTHREAD_LIBS=""
+        PTHREAD_CFLAGS=""
+done
+fi
+
+# Various other checks:
+if test "x$ax_pthread_ok" = xyes; then
+        save_LIBS="$LIBS"
+        LIBS="$PTHREAD_LIBS $LIBS"
+        save_CFLAGS="$CFLAGS"
+        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+
+        # Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
+        AC_MSG_CHECKING([for joinable pthread attribute])
+        attr_name=unknown
+        for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
+            AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>],
+                           [int attr = $attr; return attr /* ; */])],
+                [attr_name=$attr; break],
+                [])
+        done
+        AC_MSG_RESULT([$attr_name])
+        if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
+            AC_DEFINE_UNQUOTED([PTHREAD_CREATE_JOINABLE], [$attr_name],
+                               [Define to necessary symbol if this constant
+                                uses a non-standard name on your system.])
+        fi
+
+        AC_MSG_CHECKING([if more special flags are required for pthreads])
+        flag=no
+        case ${host_os} in
+            aix* | freebsd* | darwin*) flag="-D_THREAD_SAFE";;
+            osf* | hpux*) flag="-D_REENTRANT";;
+            solaris*)
+            if test "$GCC" = "yes"; then
+                flag="-D_REENTRANT"
+            else
+                # TODO: What about Clang on Solaris?
+                flag="-mt -D_REENTRANT"
+            fi
+            ;;
+        esac
+        AC_MSG_RESULT([$flag])
+        if test "x$flag" != xno; then
+            PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
+        fi
+
+        AC_CACHE_CHECK([for PTHREAD_PRIO_INHERIT],
+            [ax_cv_PTHREAD_PRIO_INHERIT], [
+                AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]],
+                                                [[int i = PTHREAD_PRIO_INHERIT;]])],
+                    [ax_cv_PTHREAD_PRIO_INHERIT=yes],
+                    [ax_cv_PTHREAD_PRIO_INHERIT=no])
+            ])
+        AS_IF([test "x$ax_cv_PTHREAD_PRIO_INHERIT" = "xyes"],
+            [AC_DEFINE([HAVE_PTHREAD_PRIO_INHERIT], [1], [Have PTHREAD_PRIO_INHERIT.])])
+
+        LIBS="$save_LIBS"
+        CFLAGS="$save_CFLAGS"
+
+        # More AIX lossage: compile with *_r variant
+        if test "x$GCC" != xyes; then
+            case $host_os in
+                aix*)
+                AS_CASE(["x/$CC"],
+                  [x*/c89|x*/c89_128|x*/c99|x*/c99_128|x*/cc|x*/cc128|x*/xlc|x*/xlc_v6|x*/xlc128|x*/xlc128_v6],
+                  [#handle absolute path differently from PATH based program lookup
+                   AS_CASE(["x$CC"],
+                     [x/*],
+                     [AS_IF([AS_EXECUTABLE_P([${CC}_r])],[PTHREAD_CC="${CC}_r"])],
+                     [AC_CHECK_PROGS([PTHREAD_CC],[${CC}_r],[$CC])])])
+                ;;
+            esac
+        fi
+fi
+
+test -n "$PTHREAD_CC" || PTHREAD_CC="$CC"
+
+AC_SUBST([PTHREAD_LIBS])
+AC_SUBST([PTHREAD_CFLAGS])
+AC_SUBST([PTHREAD_CC])
+
+# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
+if test x"$ax_pthread_ok" = xyes; then
+        ifelse([$1],,[AC_DEFINE([HAVE_PTHREAD],[1],[Define if you have POSIX threads libraries and header files.])],[$1])
+        :
+else
+        ax_pthread_ok=no
+        $2
+fi
+AC_LANG_POP
+])dnl AX_PTHREAD

src/Makefile.am

@@ -0,0 +1,23 @@
+bin_PROGRAMS = pixz
+
+pixz_CC = $(PTHREAD_CC)
+pixz_CFLAGS = $(PTHREAD_CFLAGS) -Wall -Wno-unknown-pragmas
+pixz_CPPFLAGS = $(LIBARCHIVE_CPPFLAGS) $(LZMA_CPPFLAGS)
+pixz_LDADD = -lm $(LIBARCHIVE_LIBS) $(LZMA_LIBS) $(PTHREAD_LIBS)
+
+pixz_SOURCES = \
+	common.c \
+	cpu.c \
+	endian.c \
+	list.c \
+	pixz.c \
+	pixz.h \
+	read.c \
+	write.c
+
+pixz.1: pixz.1.asciidoc
+	$(A2X) -a manversion=$(PACKAGE_VERSION) -f manpage pixz.1.asciidoc
+
+man_MANS = pixz.1
+
+EXTRA_DIST = pixz.1.asciidoc

src/endian.c

@@ -1,4 +1,4 @@
-#ifdef __APPLE__
+#ifdef __OS2__
 
 #include <libkern/OSByteOrder.h>
 

src/pixz.c

@@ -1,3 +1,7 @@
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
 #include "pixz.h"
 #include <unistd.h>
 #include <getopt.h>
@@ -47,7 +51,7 @@ static void usage(const char *msg) {
 "(C) 2009-2012 Dave Vasilevsky <dave@vasilevsky.ca>\n"
 "https://github.com/vasi/pixz\n"
 "You may use this software under the FreeBSD License\n",
-	    PIXZ_VERSION);
+	    PACKAGE_VERSION);
 	exit(2);
 }