diff --git a/common/zlib/Makefile.am b/common/zlib/Makefile.am
new file mode 100644
index 0000000..5da5a6e
--- /dev/null
+++ b/common/zlib/Makefile.am
@@ -0,0 +1,7 @@
+noinst_LTLIBRARIES = libz.la
+
+libz_la_SOURCES = adler32.c compress.c crc32.c deflate.c deflate.h example.c \
+	gzio.c infblock.c infblock.h infcodes.c infcodes.h inffast.c \
+	inffast.h inffixed.h inflate.c inftrees.c inftrees.h infutil.c \
+	infutil.h maketree.c minigzip.c trees.c trees.h uncompr.c zconf.h \
+	zlib.h zutil.c zutil.h
diff --git a/common/zlib/Makefile.in b/common/zlib/Makefile.in
deleted file mode 100644
index 531562b..0000000
--- a/common/zlib/Makefile.in
+++ /dev/null
@@ -1,175 +0,0 @@
-# Makefile for zlib
-# Copyright (C) 1995-2002 Jean-loup Gailly.
-# For conditions of distribution and use, see copyright notice in zlib.h 
-
-# To compile and test, type:
-#   ./configure; make test
-# The call of configure is optional if you don't have special requirements
-# If you wish to build zlib as a shared library, use: ./configure -s
-
-# To install /usr/local/lib/libz.* and /usr/local/include/zlib.h, type:
-#    make install
-# To install in $HOME instead of /usr/local, use:
-#    make install prefix=$HOME
-
-CC=cc
-
-CFLAGS=-O
-#CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7
-#CFLAGS=-g -DDEBUG
-#CFLAGS=-O3 -Wall -Wwrite-strings -Wpointer-arith -Wconversion \
-#           -Wstrict-prototypes -Wmissing-prototypes
-
-LDFLAGS=-L. -lz
-LDSHARED=$(CC)
-CPP=$(CC) -E
-
-VER=1.1.4
-LIBS=libz.a
-SHAREDLIB=libz.so
-
-AR=ar rc
-RANLIB=ranlib
-TAR=tar
-SHELL=/bin/sh
-
-prefix = /usr/local
-exec_prefix = ${prefix}
-libdir = ${exec_prefix}/lib
-includedir = ${prefix}/include
-
-OBJS = adler32.o compress.o crc32.o gzio.o uncompr.o deflate.o trees.o \
-       zutil.o inflate.o infblock.o inftrees.o infcodes.o infutil.o inffast.o
-
-OBJA =
-# to use the asm code: make OBJA=match.o
-
-TEST_OBJS = example.o minigzip.o
-
-DISTFILES = README FAQ INDEX ChangeLog configure Make*[a-z0-9] *.[ch] *.mms \
-  algorithm.txt zlib.3 zlib.html \
-  msdos/Make*[a-z0-9] msdos/zlib.def msdos/zlib.rc \
-  nt/Make*[a-z0-9] nt/zlib.dnt amiga/Make*.??? os2/M*.os2 os2/zlib.def \
-  contrib/RE*.contrib contrib/*.txt contrib/asm386/*.asm contrib/asm386/*.c \
-  contrib/asm386/*.bat contrib/asm386/zlibvc.d?? contrib/asm[56]86/*.?86 \
-  contrib/asm[56]86/*.S contrib/iostream/*.cpp \
-  contrib/iostream/*.h  contrib/iostream2/*.h contrib/iostream2/*.cpp \
-  contrib/untgz/Makefile contrib/untgz/*.c contrib/untgz/*.w32 \
-  contrib/minizip/[CM]*[pe] contrib/minizip/*.[ch] contrib/minizip/*.[td]?? \
-  contrib/delphi*/*.???
-
-all: example minigzip
-
-test: all
-	@LD_LIBRARY_PATH=.:$(LD_LIBRARY_PATH) ; export LD_LIBRARY_PATH; \
-	echo hello world | ./minigzip | ./minigzip -d || \
-	  echo '		*** minigzip test FAILED ***' ; \
-	if ./example; then \
-	  echo '		*** zlib test OK ***'; \
-	else \
-	  echo '		*** zlib test FAILED ***'; \
-	fi
-
-libz.a: $(OBJS) $(OBJA)
-	$(AR) $@ $(OBJS) $(OBJA)
-	-@ ($(RANLIB) $@ || true) >/dev/null 2>&1
-
-match.o: match.S
-	$(CPP) match.S > _match.s
-	$(CC) -c _match.s
-	mv _match.o match.o
-	rm -f _match.s
-
-$(SHAREDLIB).$(VER): $(OBJS)
-	$(LDSHARED) -o $@ $(OBJS)
-	rm -f $(SHAREDLIB) $(SHAREDLIB).1
-	ln -s $@ $(SHAREDLIB)
-	ln -s $@ $(SHAREDLIB).1
-
-example: example.o $(LIBS)
-	$(CC) $(CFLAGS) -o $@ example.o $(LDFLAGS)
-
-minigzip: minigzip.o $(LIBS)
-	$(CC) $(CFLAGS) -o $@ minigzip.o $(LDFLAGS)
-
-install: $(LIBS)
-	-@if [ ! -d $(includedir)  ]; then mkdir $(includedir); fi
-	-@if [ ! -d $(libdir) ]; then mkdir $(libdir); fi
-	cp zlib.h zconf.h $(includedir)
-	chmod 644 $(includedir)/zlib.h $(includedir)/zconf.h
-	cp $(LIBS) $(libdir)
-	cd $(libdir); chmod 755 $(LIBS)
-	-@(cd $(libdir); $(RANLIB) libz.a || true) >/dev/null 2>&1
-	cd $(libdir); if test -f $(SHAREDLIB).$(VER); then \
-	  rm -f $(SHAREDLIB) $(SHAREDLIB).1; \
-	  ln -s $(SHAREDLIB).$(VER) $(SHAREDLIB); \
-	  ln -s $(SHAREDLIB).$(VER) $(SHAREDLIB).1; \
-	  (ldconfig || true)  >/dev/null 2>&1; \
-	fi
-# The ranlib in install is needed on NeXTSTEP which checks file times
-# ldconfig is for Linux
-
-uninstall:
-	cd $(includedir); \
-	v=$(VER); \
-	if test -f zlib.h; then \
-	  v=`sed -n '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`; \
-          rm -f zlib.h zconf.h; \
-	fi; \
-	cd $(libdir); rm -f libz.a; \
-	if test -f $(SHAREDLIB).$$v; then \
-	  rm -f $(SHAREDLIB).$$v $(SHAREDLIB) $(SHAREDLIB).1; \
-	fi
-
-clean:
-	rm -f *.o *~ example minigzip libz.a libz.so* foo.gz so_locations \
-	   _match.s maketree
-
-distclean:	clean
-
-zip:
-	mv Makefile Makefile~; cp -p Makefile.in Makefile
-	rm -f test.c ztest*.c contrib/minizip/test.zip
-	v=`sed -n -e 's/\.//g' -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`;\
-	zip -ul9 zlib$$v $(DISTFILES)
-	mv Makefile~ Makefile
-
-dist:
-	mv Makefile Makefile~; cp -p Makefile.in Makefile
-	rm -f test.c ztest*.c contrib/minizip/test.zip
-	d=zlib-`sed -n '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`;\
-	rm -f $$d.tar.gz; \
-	if test ! -d ../$$d; then rm -f ../$$d; ln -s `pwd` ../$$d; fi; \
-	files=""; \
-	for f in $(DISTFILES); do files="$$files $$d/$$f"; done; \
-	cd ..; \
-	GZIP=-9 $(TAR) chofz $$d/$$d.tar.gz $$files; \
-	if test ! -d $$d; then rm -f $$d; fi
-	mv Makefile~ Makefile
-
-tags:	
-	etags *.[ch]
-
-depend:
-	makedepend -- $(CFLAGS) -- *.[ch]
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-adler32.o: zlib.h zconf.h
-compress.o: zlib.h zconf.h
-crc32.o: zlib.h zconf.h
-deflate.o: deflate.h zutil.h zlib.h zconf.h
-example.o: zlib.h zconf.h
-gzio.o: zutil.h zlib.h zconf.h
-infblock.o: infblock.h inftrees.h infcodes.h infutil.h zutil.h zlib.h zconf.h
-infcodes.o: zutil.h zlib.h zconf.h
-infcodes.o: inftrees.h infblock.h infcodes.h infutil.h inffast.h
-inffast.o: zutil.h zlib.h zconf.h inftrees.h
-inffast.o: infblock.h infcodes.h infutil.h inffast.h
-inflate.o: zutil.h zlib.h zconf.h infblock.h
-inftrees.o: zutil.h zlib.h zconf.h inftrees.h
-infutil.o: zutil.h zlib.h zconf.h infblock.h inftrees.h infcodes.h infutil.h
-minigzip.o:  zlib.h zconf.h 
-trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
-uncompr.o: zlib.h zconf.h
-zutil.o: zutil.h zlib.h zconf.h  
diff --git a/common/zlib/configure b/common/zlib/configure
deleted file mode 100755
index 7c66e10..0000000
--- a/common/zlib/configure
+++ /dev/null
@@ -1,213 +0,0 @@
-#!/bin/sh
-# configure script for zlib. This script is needed only if
-# you wish to build a shared library and your system supports them,
-# of if you need special compiler, flags or install directory.
-# Otherwise, you can just use directly "make test; make install"
-#
-# To create a shared library, use "configure --shared"; by default a static
-# library is created. If the primitive shared library support provided here
-# does not work, use ftp://prep.ai.mit.edu/pub/gnu/libtool-*.tar.gz
-#
-# To impose specific compiler or flags or install directory, use for example:
-#    prefix=$HOME CC=cc CFLAGS="-O4" ./configure
-# or for csh/tcsh users:
-#    (setenv prefix $HOME; setenv CC cc; setenv CFLAGS "-O4"; ./configure)
-# LDSHARED is the command to be used to create a shared library
-
-# Incorrect settings of CC or CFLAGS may prevent creating a shared library.
-# If you have problems, try without defining CC and CFLAGS before reporting
-# an error.
-
-LIBS=libz.a
-SHAREDLIB=libz.so
-VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`
-AR=${AR-"ar rc"}
-RANLIB=${RANLIB-"ranlib"}
-prefix=${prefix-/usr/local}
-exec_prefix=${exec_prefix-'${prefix}'}
-libdir=${libdir-'${exec_prefix}/lib'}
-includedir=${includedir-'${prefix}/include'}
-shared_ext='.so'
-shared=0
-gcc=0
-old_cc="$CC"
-old_cflags="$CFLAGS"
-
-while test $# -ge 1
-do
-case "$1" in
-    -h* | --h*)
-      echo 'usage:'
-      echo '  configure [--shared] [--prefix=PREFIX]  [--exec_prefix=EXPREFIX]'
-      echo '     [--libdir=LIBDIR] [--includedir=INCLUDEDIR]'
-        exit 0;;
-    -p*=* | --p*=*) prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;;
-    -e*=* | --e*=*) exec_prefix=`echo $1 | sed 's/[-a-z_]*=//'`; shift;;
-    -l*=* | --libdir=*) libdir=`echo $1 | sed 's/[-a-z_]*=//'`; shift;;
-    -i*=* | --includedir=*) includedir=`echo $1 | sed 's/[-a-z_]*=//'`;shift;;
-    -p* | --p*) prefix="$2"; shift; shift;;
-    -e* | --e*) exec_prefix="$2"; shift; shift;;
-    -l* | --l*) libdir="$2"; shift; shift;;
-    -i* | --i*) includedir="$2"; shift; shift;;
-    -s* | --s*) shared=1; shift;;
-    *) shift;;
-    esac
-done
-
-test=ztest$$
-cat > $test.c <<EOF
-extern int getchar();
-int hello() {return getchar();}
-EOF
-
-test -z "$CC" && echo Checking for gcc...
-cc=${CC-gcc}
-cflags=${CFLAGS-"-O3"}
-# to force the asm version use: CFLAGS="-O3 -DASMV" ./configure
-case "$cc" in
-  *gcc*) gcc=1;;
-esac
-
-if test "$gcc" -eq 1 && ($cc -c $cflags $test.c) 2>/dev/null; then
-  CC="$cc"
-  SFLAGS=${CFLAGS-"-fPIC -O3"}
-  CFLAGS="$cflags"
-  case `(uname -s || echo unknown) 2>/dev/null` in
-  Linux | linux) LDSHARED=${LDSHARED-"gcc -shared -Wl,-soname,libz.so.1"};;
-  *)             LDSHARED=${LDSHARED-"gcc -shared"};;
-  esac
-else
-  # find system name and corresponding cc options
-  CC=${CC-cc}
-  case `(uname -sr || echo unknown) 2>/dev/null` in
-  HP-UX*)    SFLAGS=${CFLAGS-"-O +z"}
-	     CFLAGS=${CFLAGS-"-O"}
-#	     LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"}
-	     LDSHARED=${LDSHARED-"ld -b"}
-	     shared_ext='.sl'
-	     SHAREDLIB='libz.sl';;
-  IRIX*)     SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."}
-	     CFLAGS=${CFLAGS-"-ansi -O2"}
-	     LDSHARED=${LDSHARED-"cc -shared"};;
-  OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"}
-	     CFLAGS=${CFLAGS-"-O -std1"}
-	     LDSHARED=${LDSHARED-"cc -shared  -Wl,-soname,$SHAREDLIB -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"};;
-  OSF1*)     SFLAGS=${CFLAGS-"-O -std1"}
-	     CFLAGS=${CFLAGS-"-O -std1"}
-	     LDSHARED=${LDSHARED-"cc -shared"};;
-  QNX*)      SFLAGS=${CFLAGS-"-4 -O"}
-             CFLAGS=${CFLAGS-"-4 -O"}
-	     LDSHARED=${LDSHARED-"cc"}
-             RANLIB=${RANLIB-"true"}
-             AR="cc -A";;
-  SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "}
-	     CFLAGS=${CFLAGS-"-O3"}
-	     LDSHARED=${LDSHARED-"cc -dy -KPIC -G"};;
-  SunOS\ 5*) SFLAGS=${CFLAGS-"-fast -xcg89 -KPIC -R."}
-             CFLAGS=${CFLAGS-"-fast -xcg89"}
-	     LDSHARED=${LDSHARED-"cc -G"};;
-  SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"}
-	     CFLAGS=${CFLAGS-"-O2"}
-	     LDSHARED=${LDSHARED-"ld"};;
-  UNIX_System_V\ 4.2.0) 
-	     SFLAGS=${CFLAGS-"-KPIC -O"}
-	     CFLAGS=${CFLAGS-"-O"}
-	     LDSHARED=${LDSHARED-"cc -G"};;
-  UNIX_SV\ 4.2MP)
-	     SFLAGS=${CFLAGS-"-Kconform_pic -O"}
-	     CFLAGS=${CFLAGS-"-O"}
-	     LDSHARED=${LDSHARED-"cc -G"};;
-  # send working options for other systems to support@gzip.org
-  *)         SFLAGS=${CFLAGS-"-O"}
-	     CFLAGS=${CFLAGS-"-O"}
-	     LDSHARED=${LDSHARED-"cc -shared"};;
-  esac
-fi
-
-if test $shared -eq 1; then
-  echo Checking for shared library support...
-  # we must test in two steps (cc then ld), required at least on SunOS 4.x
-  if test "`($CC -c $SFLAGS $test.c) 2>&1`" = "" &&
-     test "`($LDSHARED -o $test$shared_ext $test.o) 2>&1`" = ""; then
-    CFLAGS="$SFLAGS"
-    LIBS="$SHAREDLIB.$VER"
-    echo Building shared library $SHAREDLIB.$VER with $CC.
-  elif test -z "$old_cc" -a -z "$old_cflags"; then
-    echo No shared library suppport.
-    shared=0;
-  else
-    echo 'No shared library suppport; try without defining CC and CFLAGS'
-    shared=0;
-  fi
-fi
-if test $shared -eq 0; then
-  LDSHARED="$CC"
-  echo Building static library $LIBS version $VER with $CC.
-fi
-
-cat > $test.c <<EOF
-#include <unistd.h>
-int main() { return 0; }
-EOF
-if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
-  CFLAGS="$CFLAGS -DHAVE_UNISTD_H"
-  echo "Checking for unistd.h... Yes."
-else
-  echo "Checking for unistd.h... No."
-fi
-
-cat > $test.c <<EOF
-#include <errno.h>
-int main() { return 0; }
-EOF
-if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
-  echo "Checking for errno.h...	 Yes."
-else
-  echo "Checking for errno.h...	 No."
-  CFLAGS="$CFLAGS -DNO_ERRNO_H"
-fi
-
-cat > $test.c <<EOF
-#include <sys/types.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-caddr_t hello() {
-  return mmap((caddr_t)0, (off_t)0, PROT_READ, MAP_SHARED, 0, (off_t)0); 
-}
-EOF
-if test "`($CC -c $CFLAGS $test.c) 2>&1`" = ""; then
-  CFLAGS="$CFLAGS -DUSE_MMAP"
-  echo Checking for mmap support... Yes.
-else
-  echo Checking for mmap support... No.
-fi
-
-CPP=${CPP-"$CC -E"}
-case $CFLAGS in
-  *ASMV*)
-    if test "`nm $test.o | grep _hello`" = ""; then
-      CPP="$CPP -DNO_UNDERLINE"
-      echo Checking for underline in external names... No.
-    else
-      echo Checking for underline in external names... Yes.
-    fi;;
-esac
-
-rm -f $test.[co] $test$shared_ext
-
-# udpate Makefile
-sed < Makefile.in "
-/^CC *=/s%=.*%=$CC%
-/^CFLAGS *=/s%=.*%=$CFLAGS%
-/^CPP *=/s%=.*%=$CPP%
-/^LDSHARED *=/s%=.*%=$LDSHARED%
-/^LIBS *=/s%=.*%=$LIBS%
-/^SHAREDLIB *=/s%=.*%=$SHAREDLIB%
-/^AR *=/s%=.*%=$AR%
-/^RANLIB *=/s%=.*%=$RANLIB%
-/^VER *=/s%=.*%=$VER%
-/^prefix *=/s%=.*%=$prefix%
-/^exec_prefix *=/s%=.*%=$exec_prefix%
-/^libdir *=/s%=.*%=$libdir%
-/^includedir *=/s%=.*%=$includedir%
-" > Makefile
diff --git a/common/zlib/configure.ac b/common/zlib/configure.ac
new file mode 100644
index 0000000..66a7721
--- /dev/null
+++ b/common/zlib/configure.ac
@@ -0,0 +1,30 @@
+#                                               -*- Autoconf -*-
+# Process this file with autoconf to produce a configure script.
+
+AC_PREREQ([2.61])
+AC_INIT([zlib], [1.1.4])
+AM_INIT_AUTOMAKE([-Wall foreign dist-bzip2])
+
+# Checks for programs.
+AC_PROG_CC
+AC_PROG_LIBTOOL
+
+# Checks for libraries.
+
+# Checks for header files.
+AC_HEADER_STDC
+AC_CHECK_HEADERS([fcntl.h malloc.h stddef.h stdlib.h string.h unistd.h errno.h])
+
+# Checks for typedefs, structures, and compiler characteristics.
+AC_C_CONST
+AC_TYPE_OFF_T
+
+# Checks for library functions.
+AC_FUNC_ERROR_AT_LINE
+AC_FUNC_MMAP
+AC_FUNC_VPRINTF
+AC_CHECK_FUNCS([munmap strerror])
+
+AC_CONFIG_HEADERS([config.h])
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT
diff --git a/common/zlib/minigzip.c b/common/zlib/minigzip.c
index 8be02bd..4050878 100644
--- a/common/zlib/minigzip.c
+++ b/common/zlib/minigzip.c
@@ -15,6 +15,10 @@
 
 /* @(#) $Id: minigzip.c,v 1.1 2004/10/08 09:44:26 const_k Exp $ */
 
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
 #include <stdio.h>
 #include "zlib.h"
 
@@ -25,7 +29,7 @@
    extern void exit  OF((int));
 #endif
 
-#ifdef USE_MMAP
+#ifdef HAVE_MMAP
 #  include <sys/types.h>
 #  include <sys/mman.h>
 #  include <sys/stat.h>
@@ -75,7 +79,7 @@
 
 void error            OF((const char *msg));
 void gz_compress      OF((FILE   *in, gzFile out));
-#ifdef USE_MMAP
+#ifdef HAVE_MMAP
 int  gz_compress_mmap OF((FILE   *in, gzFile out));
 #endif
 void gz_uncompress    OF((gzFile in, FILE   *out));
@@ -105,7 +109,7 @@
     int len;
     int err;
 
-#ifdef USE_MMAP
+#ifdef HAVE_MMAP
     /* Try first compressing with mmap. If mmap fails (minigzip used in a
      * pipe), use the normal fread loop.
      */
@@ -125,7 +129,7 @@
     if (gzclose(out) != Z_OK) error("failed gzclose");
 }
 
-#ifdef USE_MMAP /* MMAP version, Miguel Albrecht <malbrech@eso.org> */
+#ifdef HAVE_MMAP /* MMAP version, Miguel Albrecht <malbrech@eso.org> */
 
 /* Try compressing the input file at once using mmap. Return Z_OK if
  * if success, Z_ERRNO otherwise.
@@ -160,7 +164,7 @@
     if (gzclose(out) != Z_OK) error("failed gzclose");
     return Z_OK;
 }
-#endif /* USE_MMAP */
+#endif /* HAVE_MMAP */
 
 /* ===========================================================================
  * Uncompress input to output then close both files.
diff --git a/common/zlib/zconf.h b/common/zlib/zconf.h
index c8d6ce9..d1705ae 100644
--- a/common/zlib/zconf.h
+++ b/common/zlib/zconf.h
@@ -8,6 +8,10 @@
 #ifndef _ZCONF_H
 #define _ZCONF_H
 
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
 /*
  * If you *really* need a unique prefix for all types and library functions,
  * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
diff --git a/common/zlib/zutil.h b/common/zlib/zutil.h
index 17eb77f..8208498 100644
--- a/common/zlib/zutil.h
+++ b/common/zlib/zutil.h
@@ -13,6 +13,10 @@
 #ifndef _Z_UTIL_H
 #define _Z_UTIL_H
 
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
 #include "zlib.h"
 
 #ifdef STDC
@@ -20,10 +24,10 @@
 #  include <string.h>
 #  include <stdlib.h>
 #endif
-#ifdef NO_ERRNO_H
-    extern int errno;
-#else
+#ifdef HAVE_ERRNO_H
 #   include <errno.h>
+#else
+    extern int errno;
 #endif
 
 #ifndef local