--------------------------------------------------------------------
> François Pinard mailto:pinard@iro.umontreal.ca
> I have a collection of DOS-abling patches for Autoconf which came from
> Eli, I think, and which you may fetch from:
>
>   http://www.iro.umontreal.ca/contrib/paxutils/dist/PATCHES-AC
>
> if I'm not mistaken.  There are a few other mods not related to DOS ports.
--------------------------------------------------------------------
> On Sun, 22 Nov 1998, Tim Rice(tim@trr.metro.net  wrote:
> Here is a patch for Autoconf version 2.12 to address a couple of
> issues on SVR4.2 machines.
>
> It was failing the test for opendir() because opendir() is in libc
> not in libdir. The patch now checks libc first then libdir.
>
> It was failing on gethostbyname(). I added a third test for gethostbynane()
> in libsocket.
>
--------------------------------------------------------------------
1998-12-01
	* acgeneral.m4: added support for DJGPP, 'test -f' changed
	for 'test $ac_x'. Support for DOS DRIVE:xx\xx path '/*)'
	changed for '/*|[A-z]:/*)'

	* acspecific.m4: check opendir in libc before -ldir
	gethosbyname/connect check in -lsocket also

diff -ru autoconf-2.12.orig/acgeneral.m4 autoconf-2.12/acgeneral.m4
--- autoconf-2.12.orig/acgeneral.m4	Tue Nov 26 13:09:42 1996
+++ autoconf-2.12/acgeneral.m4	Tue Dec  1 19:44:17 1998
@@ -635,6 +635,9 @@
   esac
 done
 
+# Support of DJGPP port of bash.
+if test -n "$COMSPEC$ComSpec"; then ac_x=-x; else ac_x=-f; fi
+
 # NLS nuisances.
 # Only set these to C if already set.  These must not be set unconditionally
 # because not all systems understand e.g. LANG=C (notably SCO).
@@ -1063,7 +1066,7 @@
 # and sets the high bit in the cache file unless we assign to the vars.
 changequote(, )dnl
 (set) 2>&1 |
-  case `(ac_space=' '; set) 2>&1` in
+  case `(ac_space=' '; set) 2>&1 | grep ac_space` in
   *ac_space=\ *)
     # `set' does not quote correctly, so add quotes (double-quote substitution
     # turns \\\\ into \\, and sed turns \\ into \).
@@ -1179,7 +1182,7 @@
 
 dnl AC_MSG_WARN(PROBLEM-DESCRIPTION)
 define(AC_MSG_WARN,
-[echo "configure: warning: $1" 1>&2])
+[echo "configure: WARNING: $1" 1>&2])
 
 dnl AC_MSG_ERROR(ERROR-DESCRIPTION)
 define(AC_MSG_ERROR,
@@ -1259,7 +1262,7 @@
 
 dnl AC_OBSOLETE(THIS-MACRO-NAME [, SUGGESTION])
 define(AC_OBSOLETE,
-[errprint(__file__:__line__: warning: [$1] is obsolete[$2]
+[errprint(__file__:__line__: WARNING: [$1] is obsolete[$2]
 )])
 
 
@@ -1284,7 +1287,7 @@
 dnl not every word.  This closes a longstanding sh security hole.
   for ac_dir in ifelse([$5], , $PATH, [$5$ac_dummy]); do
     test -z "$ac_dir" && ac_dir=.
-    if test -f $ac_dir/$ac_word; then
+    if test $ac_x $ac_dir/$ac_word; then
 ifelse([$6], , , dnl
 [      if test "[$ac_dir/$ac_word]" = "$6"; then
         ac_prog_rejected=yes
@@ -1338,7 +1341,9 @@
 AC_MSG_CHECKING([for $ac_word])
 AC_CACHE_VAL(ac_cv_path_$1,
 [case "[$]$1" in
-  /*)
+changequote(, )dnl
+  /*|[A-z]:/*)
+changequote([, ])dnl
   ac_cv_path_$1="[$]$1" # Let the user override the test with a path.
   ;;
   *)
@@ -1348,7 +1353,7 @@
 dnl not every word.  This closes a longstanding sh security hole.
   for ac_dir in ifelse([$4], , $PATH, [$4$ac_dummy]); do
     test -z "$ac_dir" && ac_dir=.
-    if test -f $ac_dir/$ac_word; then
+    if test $ac_x $ac_dir/$ac_word; then
       ac_cv_path_$1="$ac_dir/$ac_word"
       break
     fi
@@ -1686,7 +1691,7 @@
 AC_DEFUN(AC_TRY_RUN,
 [if test "$cross_compiling" = yes; then
   ifelse([$4], ,
-    [errprint(__file__:__line__: warning: [AC_TRY_RUN] called without default to allow cross compiling
+    [errprint(__file__:__line__: WARNING: [AC_TRY_RUN] called without default to allow cross compiling
 )dnl
   AC_MSG_ERROR(can not run test program while cross compiling)],
   [$4])
@@ -2109,7 +2114,10 @@
   .)  srcdir=.
       if test -z "$ac_dots"; then top_srcdir=.
       else top_srcdir=`echo $ac_dots|sed 's%/$%%'`; fi ;;
-  /*) srcdir="$ac_given_srcdir$ac_dir_suffix"; top_srcdir="$ac_given_srcdir" ;;
+changequote(, )dnl
+  /*|[A-z]:/*)
+changequote([, ])dnl
+    srcdir="$ac_given_srcdir$ac_dir_suffix"; top_srcdir="$ac_given_srcdir" ;;
   *) # Relative path.
     srcdir="$ac_dots$ac_given_srcdir$ac_dir_suffix"
     top_srcdir="$ac_dots$ac_given_srcdir" ;;
@@ -2118,7 +2126,7 @@
 ifdef([AC_PROVIDE_AC_PROG_INSTALL],
 [  case "$ac_given_INSTALL" in
 changequote(, )dnl
-  [/$]*) INSTALL="$ac_given_INSTALL" ;;
+  [/$]*|[A-z]:/*) INSTALL="$ac_given_INSTALL" ;;
 changequote([, ])dnl
   *) INSTALL="$ac_dots$ac_given_INSTALL" ;;
   esac
@@ -2325,7 +2333,7 @@
 
   case "$srcdir" in
 changequote(, )dnl
-  [/$]*) ac_rel_source="$srcdir/$ac_source" ;;
+  [/$]*|[A-z]:/*) ac_rel_source="$srcdir/$ac_source" ;;
 changequote([, ])dnl
   *) ac_rel_source="$ac_dots$srcdir/$ac_source" ;;
   esac
@@ -2400,7 +2408,9 @@
     case "$srcdir" in
     .) # No --srcdir option.  We are building in place.
       ac_sub_srcdir=$srcdir ;;
-    /*) # Absolute path.
+changequote(, )dnl
+    /*|[A-z]:/*) # Absolute path.
+changequote([, ])dnl
       ac_sub_srcdir=$srcdir/$ac_config_dir ;;
     *) # Relative path.
       ac_sub_srcdir=$ac_dots$srcdir/$ac_config_dir ;;
@@ -2421,14 +2431,16 @@
 
       # Make the cache file name correct relative to the subdirectory.
       case "$cache_file" in
-      /*) ac_sub_cache_file=$cache_file ;;
+changequote(, )dnl
+      /*|[A-z]:/*) ac_sub_cache_file=$cache_file ;;
+changequote([, ])dnl
       *) # Relative path.
         ac_sub_cache_file="$ac_dots$cache_file" ;;
       esac
 ifdef([AC_PROVIDE_AC_PROG_INSTALL],
       [  case "$ac_given_INSTALL" in
 changequote(, )dnl
-        [/$]*) INSTALL="$ac_given_INSTALL" ;;
+        [/$]*|[A-z]:/*) INSTALL="$ac_given_INSTALL" ;;
 changequote([, ])dnl
         *) INSTALL="$ac_dots$ac_given_INSTALL" ;;
         esac
diff -ru autoconf-2.12.orig/acspecific.m4 autoconf-2.12/acspecific.m4
--- autoconf-2.12.orig/acspecific.m4	Wed Nov 20 00:10:49 1996
+++ autoconf-2.12/acspecific.m4	Tue Dec  1 19:55:00 1998
@@ -444,15 +444,21 @@
     *)
       # OSF1 and SCO ODT 3.0 have their own names for install.
       for ac_prog in ginstall installbsd scoinst install; do
-        if test -f $ac_dir/$ac_prog; then
+        if test $ac_x $ac_dir/$ac_prog; then
 	  if test $ac_prog = install &&
             grep dspmsg $ac_dir/$ac_prog >/dev/null 2>&1; then
 	    # AIX install.  It has an incompatible calling convention.
 	    # OSF/1 installbsd also uses dspmsg, but is usable.
 	    :
 	  else
-	    ac_cv_path_install="$ac_dir/$ac_prog -c"
-	    break 2
+	    if test $ac_prog = installbsd &&
+	      grep src/bos $ac_dir/$ac_prog >/dev/null 2>&1; then
+	      # AIX installbsd doesn't work without option "-g".
+	      :
+	    else
+	      ac_cv_path_install="$ac_dir/$ac_prog -c"
+	      break 2
+	    fi
 	  fi
 	fi
       done
@@ -592,7 +598,10 @@
   [ac_header_dirent=$ac_hdr; break])
 # Two versions of opendir et al. are in -ldir and -lx on SCO Xenix.
 if test $ac_header_dirent = dirent.h; then
-AC_CHECK_LIB(dir, opendir, LIBS="$LIBS -ldir")
+AC_CHECK_FUNC(opendir)
+if test $ac_cv_func_opendir = no; then
+ AC_CHECK_LIB(dir, opendir, LIBS="$LIBS -ldir")
+fi
 else
 AC_CHECK_LIB(x, opendir, LIBS="$LIBS -lx")
 fi
@@ -2089,6 +2098,9 @@
     AC_CHECK_FUNC(gethostbyname)
     if test $ac_cv_func_gethostbyname = no; then
       AC_CHECK_LIB(nsl, gethostbyname, X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl")
+      if test $ac_cv_func_gethostbyname = no; then
+        AC_CHECK_LIB(socket, gethostbyname, X_EXTRA_LIBS="$X_EXTRA_LIBS -lsocket -lnsl", , -lnsl)
+      fi
     fi
 
     # lieder@skyler.mavd.honeywell.com says without -lsocket,
@@ -2100,7 +2112,7 @@
     # We assume that if connect needs -lnsl, so does gethostbyname.
     AC_CHECK_FUNC(connect)
     if test $ac_cv_func_connect = no; then
-      AC_CHECK_LIB(socket, connect, X_EXTRA_LIBS="-lsocket $X_EXTRA_LIBS", ,
+      AC_CHECK_LIB(socket, connect, X_EXTRA_LIBS="-lsocket -lnsl $X_EXTRA_LIBS", ,
 	$X_EXTRA_LIBS)
     fi