texinfo/texinfo-4.11-zlib.patch

--- config.in
+++ config.in	2008-03-10 13:01:00.285448994 +0100
@@ -328,6 +328,9 @@
 /* Define if you have the 'wint_t' type. */
 #undef HAVE_WINT_T
 
+/* Define to 1 if you have libzio for opening compressed info files */
+#undef HAVE_ZIO
+
 /* Define to 1 if you have the `_ftime' function. */
 #undef HAVE__FTIME
 
--- configure
+++ configure	2008-03-10 12:59:04.926680264 +0100
@@ -13528,6 +13528,653 @@ cat >>confdefs.h <<_ACEOF
 #define HAVE_DECL_WCWIDTH 1
 _ACEOF
 
+#
+# Check for zlib and libbz2 libraries to use this together
+# with SuSE's libzio to open compressed info files.
+#
+if test "${ac_cv_header_zlib_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for zlib.h" >&5
+echo $ECHO_N "checking for zlib.h... $ECHO_C" >&6
+if test "${ac_cv_header_zlib_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_zlib_h" >&5
+echo "${ECHO_T}$ac_cv_header_zlib_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking zlib.h usability" >&5
+echo $ECHO_N "checking zlib.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <zlib.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking zlib.h presence" >&5
+echo $ECHO_N "checking zlib.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <zlib.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: zlib.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: zlib.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: zlib.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: zlib.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: zlib.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: zlib.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: zlib.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: zlib.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: zlib.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: zlib.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: zlib.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: zlib.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: zlib.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: zlib.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: zlib.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: zlib.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## -------------------------------------- ##
+## Report this to the GNU Texinfo lists.  ##
+## -------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for zlib.h" >&5
+echo $ECHO_N "checking for zlib.h... $ECHO_C" >&6
+if test "${ac_cv_header_zlib_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_zlib_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_zlib_h" >&5
+echo "${ECHO_T}$ac_cv_header_zlib_h" >&6
+
+fi
+if test $ac_cv_header_zlib_h = yes; then
+
+  for lib in z gz
+  do
+    as_ac_Lib=`echo "ac_cv_lib_$lib''_gzopen" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for gzopen in -l$lib" >&5
+echo $ECHO_N "checking for gzopen in -l$lib... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Lib+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-l$lib  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char gzopen ();
+int
+main ()
+{
+gzopen ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_Lib=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_Lib=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Lib'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Lib'}'`" >&6
+if test `eval echo '${'$as_ac_Lib'}'` = yes; then
+  LIBS="$LIBS -l$lib" ; break
+fi
+
+  done
+fi
+
+
+if test "${ac_cv_header_bzlib_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for bzlib.h" >&5
+echo $ECHO_N "checking for bzlib.h... $ECHO_C" >&6
+if test "${ac_cv_header_bzlib_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_bzlib_h" >&5
+echo "${ECHO_T}$ac_cv_header_bzlib_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking bzlib.h usability" >&5
+echo $ECHO_N "checking bzlib.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <bzlib.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking bzlib.h presence" >&5
+echo $ECHO_N "checking bzlib.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <bzlib.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: bzlib.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: bzlib.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: bzlib.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: bzlib.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: bzlib.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: bzlib.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: bzlib.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: bzlib.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: bzlib.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: bzlib.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: bzlib.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: bzlib.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: bzlib.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: bzlib.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: bzlib.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: bzlib.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## -------------------------------------- ##
+## Report this to the GNU Texinfo lists.  ##
+## -------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for bzlib.h" >&5
+echo $ECHO_N "checking for bzlib.h... $ECHO_C" >&6
+if test "${ac_cv_header_bzlib_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_bzlib_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_bzlib_h" >&5
+echo "${ECHO_T}$ac_cv_header_bzlib_h" >&6
+
+fi
+if test $ac_cv_header_bzlib_h = yes; then
+
+  for lib in bz2 bzip2
+  do
+    as_ac_Lib=`echo "ac_cv_lib_$lib''_BZ2_bzopen" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for BZ2_bzopen in -l$lib" >&5
+echo $ECHO_N "checking for BZ2_bzopen in -l$lib... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Lib+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-l$lib  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char BZ2_bzopen ();
+int
+main ()
+{
+BZ2_bzopen ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_Lib=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_Lib=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Lib'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Lib'}'`" >&6
+if test `eval echo '${'$as_ac_Lib'}'` = yes; then
+  LIBS="$LIBS -l$lib" ; break
+fi
+
+  done
+fi
+
+
+if test "${ac_cv_header_zio_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for zio.h" >&5
+echo $ECHO_N "checking for zio.h... $ECHO_C" >&6
+if test "${ac_cv_header_zio_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_zio_h" >&5
+echo "${ECHO_T}$ac_cv_header_zio_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking zio.h usability" >&5
+echo $ECHO_N "checking zio.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <zio.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking zio.h presence" >&5
+echo $ECHO_N "checking zio.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <zio.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: zio.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: zio.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: zio.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: zio.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: zio.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: zio.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: zio.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: zio.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: zio.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: zio.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: zio.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: zio.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: zio.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: zio.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: zio.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: zio.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## -------------------------------------- ##
+## Report this to the GNU Texinfo lists.  ##
+## -------------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for zio.h" >&5
+echo $ECHO_N "checking for zio.h... $ECHO_C" >&6
+if test "${ac_cv_header_zio_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_zio_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_zio_h" >&5
+echo "${ECHO_T}$ac_cv_header_zio_h" >&6
+
+fi
+if test $ac_cv_header_zio_h = yes; then
+
+    echo "$as_me:$LINENO: checking for fzopen in -lzio" >&5
+echo $ECHO_N "checking for fzopen in -lzio... $ECHO_C" >&6
+if test "${ac_cv_lib_zio_fzopen+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lzio  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char fzopen ();
+int
+main ()
+{
+fzopen ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_zio_fzopen=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_zio_fzopen=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_zio_fzopen" >&5
+echo "${ECHO_T}$ac_cv_lib_zio_fzopen" >&6
+if test $ac_cv_lib_zio_fzopen = yes; then
+  LIBS="$LIBS -lzio" ; cat >>confdefs.h <<\_ACEOF
+#define HAVE_ZIO 1
+_ACEOF
+
+fi
+
+
+fi
+
+
+
 
 else
   cat >>confdefs.h <<_ACEOF
--- configure.ac
+++ configure.ac	2008-03-10 12:59:04.926680264 +0100
@@ -221,6 +221,24 @@ AC_CONFIG_FILES([util/defs])
 AC_CHECK_PROGS([HEVEA], [hevea], [])
 AC_CHECK_PROGS([TEX], [tex], [])
 
+#
+# Check for zlib and libbz2 libraries to use this together
+# with SuSE's libzio to open compressed info files.
+#
+AC_CHECK_HEADER(zlib.h,[
+  for lib in z gz
+  do
+    AC_CHECK_LIB($lib, gzopen, [LIBS="$LIBS -l$lib" ; break])
+  done])
+AC_CHECK_HEADER(bzlib.h,[
+  for lib in bz2 bzip2
+  do
+    AC_CHECK_LIB($lib, BZ2_bzopen, [LIBS="$LIBS -l$lib" ; break])
+  done])
+AC_CHECK_HEADER(zio.h,[
+    AC_CHECK_LIB(zio, fzopen, [LIBS="$LIBS -lzio" ; AC_DEFINE(HAVE_ZIO)])
+  ])
+
 AC_CONFIG_FILES([
   Makefile
   doc/Makefile
--- util/install-info.c
+++ util/install-info.c	2008-03-10 14:52:25.546733145 +0000
@@ -20,6 +20,9 @@
 #include "system.h"
 #include <getopt.h>
 #include <regex.h>
+#ifdef HAVE_ZIO
+# include <zio.h>
+#endif
 
 static char *progname = "install-info";
 
@@ -576,15 +579,47 @@
 
   *opened_filename = filename;
   f = fopen (*opened_filename, FOPEN_RBIN);
+#ifdef HAVE_ZIO
+  if (!compression_program)
+    compression_program = &local_compression_program;
+  *compression_program = NULL;
+  if (f)
+    {
+      nread = fread (data, sizeof (data), 1, f);
+      if (nread == 1)
+	{
+	  if (data[0] == '\x1f' && data[1] == '\x8b')
+	    *compression_program = "g";
+	  else if(data[0] == '\x1f' && data[1] == '\x9d')
+	    *compression_program = "Z";
+	  else if(data[0] == '\x1f' && data[1] == '\x9e')
+	    *compression_program = "z";
+	  else if(data[0] == 'B' && data[1] == 'Z' && data[2] == 'h')
+	    *compression_program = "b";
+	}
+      fclose(f);
+      f = fzopen (*opened_filename, FOPEN_RBIN);
+    }
+#endif
   if (!f)
     {
       *opened_filename = concat (filename, ".gz", "");
+#ifdef HAVE_ZIO
+      f = fzopen (*opened_filename, FOPEN_RBIN);
+      *compression_program = "g";
+#else
       f = fopen (*opened_filename, FOPEN_RBIN);
+#endif
   if (!f)
     {
       free (*opened_filename);
       *opened_filename = concat (filename, ".bz2", "");
+#ifdef HAVE_ZIO
+      f = fzopen (*opened_filename, FOPEN_RBIN);
+#else
       f = fopen (*opened_filename, FOPEN_RBIN);
+      *compression_program = "b";
+#endif
     }
 
 #ifdef __MSDOS__
@@ -610,7 +645,11 @@
               /* And try opening it again.  */
               free (*opened_filename);
               *opened_filename = filename;
+#ifdef HAVE_ZIO
+              f = fzopen (*opened_filename, FOPEN_RBIN);
+#else
               f = fopen (*opened_filename, FOPEN_RBIN);
+#endif
               if (!f)
                 pfatal_with_name (filename);
             }
@@ -618,7 +657,7 @@
             pfatal_with_name (filename);
         }
     }
-
+#ifndef HAVE_ZIO
   /* Read first few bytes of file rather than relying on the filename.
      If the file is shorter than this it can't be usable anyway.  */
   nread = fread (data, sizeof (data), 1, f);
@@ -679,7 +718,7 @@
 #endif
       *is_pipe = 0;
     }
-
+#endif /* !HAVE_ZIO */
   return f;
 }
 
@@ -752,11 +791,23 @@
   int i;
   FILE *output;
 
+#ifndef HAVE_ZIO
   if (compression_program)
     {
       char *command = concat (compression_program, ">", dirfile);
       output = popen (command, "w");
     }
+#else
+  if (compression_program)
+    {
+      if (*compression_program == 'g' || *compression_program == 'z')
+	output = fzopen (dirfile, "wg");
+      if (*compression_program == 'b')
+	output = fzopen (dirfile, "wb");
+      if (*compression_program == 'Z')
+	output = fzopen (dirfile, "wZ");
+    }
+#endif
   else
     output = fopen (dirfile, "w");