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PATCH: Readline on MinGW


Chet --

This patch begins adding support for MinGW to readline. There is one other patche required, which is *much* smaller, but somewhat more complex; this patch is the large, mechanical patch. In general, this patch checks for the availability of more things in autoconf, and then disables uses of those things when they are not present. There are no actual changes to the code itself, just additional conditionals, with the exception that a call to "kill" is turned into a call to the POSIX "raise", which, unlike "kill", is also available on Windows.

The GDB maintainers have asked that I post this patch both to the GDB patches list, and also to the readline patches list. The hope is that you (Chet) will accept this patch -- or some variant thereof -- into the upstream readline so that there will not be divergence between GDB's readline and the official version.

The overall purpose of this work is to get the FSF version of GDB working on MinGW. The necessary patches are already in GDB itself; all that remains is the readline bits.

Thanks in advance for your consideration.

--
Mark Mitchell
CodeSourcery, LLC
mark@codesourcery.com
(916) 791-8304
2005-03-28  Mark Mitchell <mark@codesourcery.com>

	* readline/aclocal.m4: Use AC_TRY_LINK to check for mbstate_t.
	* readline/complete.c (pwd.h): Guard with HAVE_PWD_H.
	(getpwent): Guard with HAVE_GETPWENT.
	(rl_username_completion_function): Guard use of getpwent.
	(endpwent): Likewise.
	* readline/config.h.in (HAVE_FCNTL): New macro.
	(HAVE_GETPWENT): Likewise.
	(HAVE_GETPWNAM): Likewise.
	(HAVE_GETPWUID): Likewise.
	(HAVE_PWD_H): Likewise.
	* readline/configure: Regenerated.
	* readline/configure.in: Handle MinGW when cross compiling.  Check for
	getpwnam, getpwent, getpwuid, and pwd.h.
	* readline/display.c (rl_clear_screen): Treat Windows like DOS.
	(insert_some_chars): Likewise.
	(delete_chars): Likewise.
	* readline/shell.c (pwd.h): Guard with HAVE_PWD_H.
	(getpwuid): Guard with HAVE_GETPWUID.
	(sh_unset_nodelay_mode): Guard use of fnctl with HAVE_FNCTL_H.
	* readline/signals.c (rl_signal_handler): Don't use SIGALRM or
	SIGQUIT if not defined.  Use "raise" rather than "kill".
	(rl_set_signals): Don't set handlers for SIGQUIT or SIGALRM if
	they are not defined.
	(rl_clear_signals): Likewise.
	* readline/tilde.c (pwd.h): Guard with HAVE_PWD_H.
	(getpwuid): Guard declaration with HAVE_GETPWUID.
	(getpwnam): Guard declaration with HAVE_GETPWNAM.
	(tilde_expand_word): Guard use of getpwnam with HAVE_GETPWNAM.

Index: aclocal.m4
===================================================================
RCS file: /cvs/src/src/readline/aclocal.m4,v
retrieving revision 1.7
retrieving revision 1.7.34.1
diff -c -5 -p -r1.7 -r1.7.34.1
*** aclocal.m4	27 May 2003 23:29:47 -0000	1.7
--- aclocal.m4	28 Mar 2005 19:34:24 -0000	1.7.34.1
*************** else
*** 1661,1673 ****
    WCWIDTH_OBJ=
  fi
  AC_SUBST(WCWIDTH_OBJ)
  
  AC_CACHE_CHECK([for mbstate_t], bash_cv_have_mbstate_t,
! [AC_TRY_RUN([
! #include <wchar.h>
! int
  main ()
  {
    mbstate_t ps;
    return 0;
  }], bash_cv_have_mbstate_t=yes,  bash_cv_have_mbstate_t=no)])
--- 1661,1673 ----
    WCWIDTH_OBJ=
  fi
  AC_SUBST(WCWIDTH_OBJ)
  
  AC_CACHE_CHECK([for mbstate_t], bash_cv_have_mbstate_t,
! [AC_TRY_LINK(
! [#include <wchar.h>],
! [int
  main ()
  {
    mbstate_t ps;
    return 0;
  }], bash_cv_have_mbstate_t=yes,  bash_cv_have_mbstate_t=no)])
Index: complete.c
===================================================================
RCS file: /cvs/src/src/readline/complete.c,v
retrieving revision 1.5
retrieving revision 1.5.60.1
diff -c -5 -p -r1.5 -r1.5.60.1
*** complete.c	8 Dec 2002 22:31:37 -0000	1.5
--- complete.c	28 Mar 2005 19:34:24 -0000	1.5.60.1
***************
*** 46,56 ****
--- 46,58 ----
  #include <errno.h>
  #if !defined (errno)
  extern int errno;
  #endif /* !errno */
  
+ #ifdef HAVE_PWD_H
  #include <pwd.h>
+ #endif
  
  #include "posixdir.h"
  #include "posixstat.h"
  
  /* System-specific feature definitions and include files. */
*************** typedef int QSFUNC ();
*** 77,89 ****
  /* Unix version of a hidden file.  Could be different on other systems. */
  #define HIDDEN_FILE(fname)	((fname)[0] == '.')
  
  /* Most systems don't declare getpwent in <pwd.h> if _POSIX_SOURCE is
     defined. */
! #if !defined (HAVE_GETPW_DECLS) || defined (_POSIX_SOURCE)
  extern struct passwd *getpwent PARAMS((void));
! #endif /* !HAVE_GETPW_DECLS || _POSIX_SOURCE */
  
  /* If non-zero, then this is the address of a function to call when
     completing a word would normally display the list of possible matches.
     This function is called instead of actually doing the display.
     It takes three arguments: (char **matches, int num_matches, int max_length)
--- 79,92 ----
  /* Unix version of a hidden file.  Could be different on other systems. */
  #define HIDDEN_FILE(fname)	((fname)[0] == '.')
  
  /* Most systems don't declare getpwent in <pwd.h> if _POSIX_SOURCE is
     defined. */
! #if defined(HAVE_GETPWENT) && \
!     (!defined (HAVE_GETPW_DECLS) || defined (_POSIX_SOURCE))
  extern struct passwd *getpwent PARAMS((void));
! #endif /* defiend (HAVE_GETPWENT) && (!HAVE_GETPW_DECLS || _POSIX_SOURCE) */
  
  /* If non-zero, then this is the address of a function to call when
     completing a word would normally display the list of possible matches.
     This function is called instead of actually doing the display.
     It takes three arguments: (char **matches, int num_matches, int max_length)
*************** rl_username_completion_function (text, s
*** 1660,1679 ****
--- 1663,1686 ----
        username = savestring (&text[first_char_loc]);
        namelen = strlen (username);
        setpwent ();
      }
  
+ #ifdef HAVE_GETPWENT
    while (entry = getpwent ())
      {
        /* Null usernames should result in all users as possible completions. */
        if (namelen == 0 || (STREQN (username, entry->pw_name, namelen)))
  	break;
      }
+ #endif
  
    if (entry == 0)
      {
+ #ifdef HAVE_GETPWENT
        endpwent ();
+ #endif
        return ((char *)NULL);
      }
    else
      {
        value = (char *)xmalloc (2 + strlen (entry->pw_name));
Index: config.h.in
===================================================================
RCS file: /cvs/src/src/readline/config.h.in,v
retrieving revision 1.5
retrieving revision 1.5.56.1
diff -c -5 -p -r1.5 -r1.5.56.1
*** config.h.in	3 Mar 2003 18:52:27 -0000	1.5
--- config.h.in	28 Mar 2005 19:34:25 -0000	1.5.56.1
***************
*** 20,29 ****
--- 20,32 ----
  /* Define if the `S_IS*' macros in <sys/stat.h> do not work properly.  */
  #undef STAT_MACROS_BROKEN
  
  #undef VOID_SIGHANDLER
  
+ /* Define if you have the fcntl function. */
+ #undef HAVE_FCNTL 
+  
  /* Define if you have the isascii function. */
  #undef HAVE_ISASCII
  
  /* Define if you have the isxdigit function. */
  #undef HAVE_ISXDIGIT
***************
*** 41,50 ****
--- 44,62 ----
  #undef HAVE_MEMMOVE
  
  /* Define if you have the putenv function.  */
  #undef HAVE_PUTENV
  
+ /* Define if you have the getpwent function.  */
+ #undef HAVE_GETPWENT
+ 
+ /* Define if you have the getpwnam function.  */
+ #undef HAVE_GETPWNAM
+ 
+ /* Define if you have the getpwnam function.  */
+ #undef HAVE_GETPWUID
+ 
  /* Define if you have the select function.  */
  #undef HAVE_SELECT
  
  /* Define if you have the setenv function.  */
  #undef HAVE_SETENV
***************
*** 88,97 ****
--- 100,112 ----
  #undef HAVE_MEMORY_H
  
  /* Define if you have the <ndir.h> header file.  */
  #undef HAVE_NDIR_H
  
+ /* Define if you have the <pwd.h> header file.  */
+ #undef HAVE_PWD_H
+ 
  /* Define if you have the <stdarg.h> header file.  */
  #undef HAVE_STDARG_H
  
  /* Define if you have the <stdlib.h> header file.  */
  #undef HAVE_STDLIB_H
Index: configure.in
===================================================================
RCS file: /cvs/src/src/readline/configure.in,v
retrieving revision 1.6
retrieving revision 1.6.60.1
diff -c -5 -p -r1.6 -r1.6.60.1
*** configure.in	17 Dec 2002 02:52:32 -0000	1.6
--- configure.in	28 Mar 2005 19:34:27 -0000	1.6.60.1
*************** dnl load up the cross-building cache fil
*** 54,73 ****
  dnl files as necessary
  if test "x$cross_compiling" = "xyes"; then
      case "${host}" in
      *-cygwin*)
  	cross_cache=${srcdir}/cross-build/cygwin.cache
- 	if test -r "${cross_cache}"; then
- 	    echo "loading cross-build cache file ${cross_cache}"
- 	    . ${cross_cache}
- 	fi
  	LOCAL_CFLAGS="$LOCAL_CFLAGS -I${srcdir}/../libtermcap"
- 	unset cross_cache
  	;;
      *)  echo "configure: cross-compiling for a non-cygwin target is not supported" >&2
  	;;
      esac
  fi
   
  if test "x$cross_compiling" = "xyes"; then
    CROSS_COMPILING_FLAG=-DCROSS_COMPILING
  else
--- 54,79 ----
  dnl files as necessary
  if test "x$cross_compiling" = "xyes"; then
      case "${host}" in
      *-cygwin*)
  	cross_cache=${srcdir}/cross-build/cygwin.cache
  	LOCAL_CFLAGS="$LOCAL_CFLAGS -I${srcdir}/../libtermcap"
  	;;
+    *-mingw32*)	
+ 	cross_cache=${srcdir}/cross-build/mingw.cache
+         ;;
      *)  echo "configure: cross-compiling for a non-cygwin target is not supported" >&2
  	;;
      esac
+ 
+     if test "x$cross_cache" != "x"; then
+ 	if test -r "${cross_cache}"; then
+ 	    echo "loading cross-build cache file ${cross_cache}"
+ 	    . ${cross_cache}
+ 	fi
+ 	unset cross_cache
+     fi
  fi
   
  if test "x$cross_compiling" = "xyes"; then
    CROSS_COMPILING_FLAG=-DCROSS_COMPILING
  else
*************** AC_TYPE_SIZE_T
*** 110,127 ****
  AC_CHECK_TYPE(ssize_t, int)
  
  AC_HEADER_STAT
  AC_HEADER_DIRENT
  
! AC_CHECK_FUNCS(lstat memmove putenv select setenv setlocale \
! 		strcasecmp strpbrk tcgetattr vsnprintf isascii isxdigit)
  
  AC_FUNC_STRCOLL
  
  AC_CHECK_HEADERS(unistd.h stdlib.h varargs.h stdarg.h string.h strings.h \
  		limits.h sys/ptem.h sys/pte.h sys/stream.h sys/select.h \
! 		termcap.h termios.h termio.h sys/file.h locale.h memory.h )
  
  BASH_SYS_SIGNAL_VINTAGE
  BASH_SYS_REINSTALL_SIGHANDLERS
  
  BASH_FUNC_POSIX_SETJMP
--- 116,135 ----
  AC_CHECK_TYPE(ssize_t, int)
  
  AC_HEADER_STAT
  AC_HEADER_DIRENT
  
! AC_CHECK_FUNCS(fcntl lstat memmove putenv select setenv setlocale \
! 	       strcasecmp strpbrk tcgetattr vsnprintf isascii isxdigit \
!                getpwname getpwent getpwuid)
  
  AC_FUNC_STRCOLL
  
  AC_CHECK_HEADERS(unistd.h stdlib.h varargs.h stdarg.h string.h strings.h \
  		limits.h sys/ptem.h sys/pte.h sys/stream.h sys/select.h \
! 		termcap.h termios.h termio.h sys/file.h locale.h memory.h \
!                 pwd.h)
  
  BASH_SYS_SIGNAL_VINTAGE
  BASH_SYS_REINSTALL_SIGHANDLERS
  
  BASH_FUNC_POSIX_SETJMP
Index: display.c
===================================================================
RCS file: /cvs/src/src/readline/display.c,v
retrieving revision 1.8
retrieving revision 1.8.20.1
diff -c -5 -p -r1.8 -r1.8.20.1
*** display.c	30 Dec 2003 07:25:18 -0000	1.8
--- display.c	28 Mar 2005 19:34:27 -0000	1.8.20.1
*************** _rl_clear_screen ()
*** 1905,1917 ****
  static void
  insert_some_chars (string, count, col)
       char *string;
       int count, col;
  {
! #ifdef __MSDOS__
    _rl_output_some_chars (string, count);
! #else  /* !__MSDOS__ */
    /* DEBUGGING */
    if (MB_CUR_MAX == 1 || rl_byte_oriented)
      if (count != col)
        fprintf(stderr, "readline: debug: insert_some_chars: count (%d) != col (%d)\n", count, col);
  
--- 1905,1917 ----
  static void
  insert_some_chars (string, count, col)
       char *string;
       int count, col;
  {
! #if defined(__MSDOS__) || defined(__MINGW32__)
    _rl_output_some_chars (string, count);
! #else  /* !__MSDOS__ && !__MINGW32__ */
    /* DEBUGGING */
    if (MB_CUR_MAX == 1 || rl_byte_oriented)
      if (count != col)
        fprintf(stderr, "readline: debug: insert_some_chars: count (%d) != col (%d)\n", count, col);
  
*************** delete_chars (count)
*** 1957,1967 ****
       int count;
  {
    if (count > _rl_screenwidth)	/* XXX */
      return;
  
! #ifndef __MSDOS__
    if (_rl_term_DC && *_rl_term_DC)
      {
        char *buffer;
        buffer = tgoto (_rl_term_DC, count, count);
        tputs (buffer, count, _rl_output_character_function);
--- 1957,1967 ----
       int count;
  {
    if (count > _rl_screenwidth)	/* XXX */
      return;
  
! #if !defined(__MSDOS__) && !defined(__MINGW32__)  
    if (_rl_term_DC && *_rl_term_DC)
      {
        char *buffer;
        buffer = tgoto (_rl_term_DC, count, count);
        tputs (buffer, count, _rl_output_character_function);
*************** delete_chars (count)
*** 1970,1980 ****
      {
        if (_rl_term_dc && *_rl_term_dc)
  	while (count--)
  	  tputs (_rl_term_dc, 1, _rl_output_character_function);
      }
! #endif /* !__MSDOS__ */
  }
  
  void
  _rl_update_final ()
  {
--- 1970,1980 ----
      {
        if (_rl_term_dc && *_rl_term_dc)
  	while (count--)
  	  tputs (_rl_term_dc, 1, _rl_output_character_function);
      }
! #endif /* !__MSDOS__ && !__MINGW32__ */
  }
  
  void
  _rl_update_final ()
  {
Index: shell.c
===================================================================
RCS file: /cvs/src/src/readline/shell.c,v
retrieving revision 1.4
retrieving revision 1.4.60.1
diff -c -5 -p -r1.4 -r1.4.60.1
*** shell.c	8 Dec 2002 22:31:37 -0000	1.4
--- shell.c	28 Mar 2005 19:34:27 -0000	1.4.60.1
***************
*** 48,58 ****
--- 48,60 ----
  #if defined (HAVE_LIMITS_H)
  #  include <limits.h>
  #endif
  
  #include <fcntl.h>
+ #ifdef HAVE_PWD_H
  #include <pwd.h>
+ #endif
  
  #include <stdio.h>
  
  #include "rlstdc.h"
  #include "rlshell.h"
*************** sh_get_home_dir ()
*** 154,166 ****
--- 156,170 ----
  {
    char *home_dir;
    struct passwd *entry;
  
    home_dir = (char *)NULL;
+ #ifdef HAVE_GETPWUID
    entry = getpwuid (getuid ());
    if (entry)
      home_dir = entry->pw_dir;
+ #endif
    return (home_dir);
  }
  
  #if !defined (O_NDELAY)
  #  if defined (FNDELAY)
*************** sh_get_home_dir ()
*** 170,179 ****
--- 174,184 ----
  
  int
  sh_unset_nodelay_mode (fd)
       int fd;
  {
+ #ifdef HAVE_FNCTL
    int flags, bflags;
  
    if ((flags = fcntl (fd, F_GETFL, 0)) < 0)
      return -1;
  
*************** sh_unset_nodelay_mode (fd)
*** 190,197 ****
--- 195,203 ----
    if (flags & bflags)
      {
        flags &= ~bflags;
        return (fcntl (fd, F_SETFL, flags));
      }
+ #endif
  
    return 0;
  }
Index: signals.c
===================================================================
RCS file: /cvs/src/src/readline/signals.c,v
retrieving revision 1.5
retrieving revision 1.5.60.1
diff -c -5 -p -r1.5 -r1.5.60.1
*** signals.c	8 Dec 2002 22:31:37 -0000	1.5
--- signals.c	28 Mar 2005 19:34:27 -0000	1.5.60.1
*************** rl_signal_handler (sig)
*** 125,135 ****
    RL_SETSTATE(RL_STATE_SIGHANDLER);
  
  #if !defined (HAVE_BSD_SIGNALS) && !defined (HAVE_POSIX_SIGNALS)
    /* Since the signal will not be blocked while we are in the signal
       handler, ignore it until rl_clear_signals resets the catcher. */
!   if (sig == SIGINT || sig == SIGALRM)
      rl_set_sighandler (sig, SIG_IGN, &dummy_cxt);
  #endif /* !HAVE_BSD_SIGNALS && !HAVE_POSIX_SIGNALS */
  
    switch (sig)
      {
--- 125,139 ----
    RL_SETSTATE(RL_STATE_SIGHANDLER);
  
  #if !defined (HAVE_BSD_SIGNALS) && !defined (HAVE_POSIX_SIGNALS)
    /* Since the signal will not be blocked while we are in the signal
       handler, ignore it until rl_clear_signals resets the catcher. */
!   if (sig == SIGINT 
! #ifdef SIGALRM
!       || sig == SIGALRM
! #endif
!                        )
      rl_set_sighandler (sig, SIG_IGN, &dummy_cxt);
  #endif /* !HAVE_BSD_SIGNALS && !HAVE_POSIX_SIGNALS */
  
    switch (sig)
      {
*************** rl_signal_handler (sig)
*** 140,152 ****
--- 144,160 ----
  #if defined (SIGTSTP)
      case SIGTSTP:
      case SIGTTOU:
      case SIGTTIN:
  #endif /* SIGTSTP */
+ #ifdef SIGALRM
      case SIGALRM:
+ #endif
      case SIGTERM:
+ #ifdef SIGQUIT
      case SIGQUIT:
+ #endif
        rl_cleanup_after_signal ();
  
  #if defined (HAVE_POSIX_SIGNALS)
        sigprocmask (SIG_BLOCK, (sigset_t *)NULL, &set);
        sigdelset (&set, sig);
*************** rl_signal_handler (sig)
*** 158,168 ****
  
  #if defined (__EMX__)
        signal (sig, SIG_ACK);
  #endif
  
!       kill (getpid (), sig);
  
        /* Let the signal that we just sent through.  */
  #if defined (HAVE_POSIX_SIGNALS)
        sigprocmask (SIG_SETMASK, &set, (sigset_t *)NULL);
  #else /* !HAVE_POSIX_SIGNALS */
--- 166,176 ----
  
  #if defined (__EMX__)
        signal (sig, SIG_ACK);
  #endif
  
!       raise (sig);
  
        /* Let the signal that we just sent through.  */
  #if defined (HAVE_POSIX_SIGNALS)
        sigprocmask (SIG_SETMASK, &set, (sigset_t *)NULL);
  #else /* !HAVE_POSIX_SIGNALS */
*************** rl_set_signals ()
*** 275,286 ****
--- 283,297 ----
  
    if (rl_catch_signals && signals_set_flag == 0)
      {
        rl_maybe_set_sighandler (SIGINT, rl_signal_handler, &old_int);
        rl_maybe_set_sighandler (SIGTERM, rl_signal_handler, &old_term);
+ #ifdef SIGQUIT
        rl_maybe_set_sighandler (SIGQUIT, rl_signal_handler, &old_quit);
+ #endif
  
+ #ifdef SIGALRM
        oh = rl_set_sighandler (SIGALRM, rl_signal_handler, &old_alrm);
        if (oh == (SigHandler *)SIG_IGN)
  	rl_sigaction (SIGALRM, &old_alrm, &dummy);
  #if defined (HAVE_POSIX_SIGNALS) && defined (SA_RESTART)
        /* If the application using readline has already installed a signal
*************** rl_set_signals ()
*** 288,297 ****
--- 299,309 ----
  	 automatically, so readline should just get out of the way.  Since
  	 we tested for SIG_IGN above, we can just test for SIG_DFL here. */
        if (oh != (SigHandler *)SIG_DFL && (old_alrm.sa_flags & SA_RESTART))
  	rl_sigaction (SIGALRM, &old_alrm, &dummy);
  #endif /* HAVE_POSIX_SIGNALS */
+ #endif /* SIGALRM */
  
  #if defined (SIGTSTP)
        rl_maybe_set_sighandler (SIGTSTP, rl_signal_handler, &old_tstp);
  #endif /* SIGTSTP */
  
*************** rl_clear_signals ()
*** 326,337 ****
--- 338,353 ----
      {
        sigemptyset (&dummy.sa_mask);
  
        rl_sigaction (SIGINT, &old_int, &dummy);
        rl_sigaction (SIGTERM, &old_term, &dummy);
+ #ifdef SIGQUIT
        rl_sigaction (SIGQUIT, &old_quit, &dummy);
+ #endif
+ #ifdef SIGALRM
        rl_sigaction (SIGALRM, &old_alrm, &dummy);
+ #endif
  
  #if defined (SIGTSTP)
        rl_sigaction (SIGTSTP, &old_tstp, &dummy);
  #endif /* SIGTSTP */
  
Index: tilde.c
===================================================================
RCS file: /cvs/src/src/readline/tilde.c,v
retrieving revision 1.4
retrieving revision 1.4.60.1
diff -c -5 -p -r1.4 -r1.4.60.1
*** tilde.c	8 Dec 2002 22:31:37 -0000	1.4
--- tilde.c	28 Mar 2005 19:34:27 -0000	1.4.60.1
***************
*** 41,64 ****
  #else
  #  include "ansi_stdlib.h"
  #endif /* HAVE_STDLIB_H */
  
  #include <sys/types.h>
  #include <pwd.h>
  
  #include "tilde.h"
  
  #if defined (TEST) || defined (STATIC_MALLOC)
  static void *xmalloc (), *xrealloc ();
  #else
  #  include "xmalloc.h"
  #endif /* TEST || STATIC_MALLOC */
  
! #if !defined (HAVE_GETPW_DECLS)
  extern struct passwd *getpwuid PARAMS((uid_t));
  extern struct passwd *getpwnam PARAMS((const char *));
! #endif /* !HAVE_GETPW_DECLS */
  
  #if !defined (savestring)
  #define savestring(x) strcpy ((char *)xmalloc (1 + strlen (x)), (x))
  #endif /* !savestring */
  
--- 41,66 ----
  #else
  #  include "ansi_stdlib.h"
  #endif /* HAVE_STDLIB_H */
  
  #include <sys/types.h>
+ #ifdef HAVE_PWD_H
  #include <pwd.h>
+ #endif /* HAVE_PWD_H */
  
  #include "tilde.h"
  
  #if defined (TEST) || defined (STATIC_MALLOC)
  static void *xmalloc (), *xrealloc ();
  #else
  #  include "xmalloc.h"
  #endif /* TEST || STATIC_MALLOC */
  
! #if defined (HAVE_GETPWNAM) && !defined (HAVE_GETPW_DECLS)
  extern struct passwd *getpwuid PARAMS((uid_t));
  extern struct passwd *getpwnam PARAMS((const char *));
! #endif /* defined (HAVE_GETPWNAM) && !HAVE_GETPW_DECLS */
  
  #if !defined (savestring)
  #define savestring(x) strcpy ((char *)xmalloc (1 + strlen (x)), (x))
  #endif /* !savestring */
  
*************** tilde_expand_word (filename)
*** 345,354 ****
--- 347,357 ----
      }
  
    /* No preexpansion hook, or the preexpansion hook failed.  Look in the
       password database. */
    dirname = (char *)NULL;
+ #ifdef HAVE_GETPWNAM
    user_entry = getpwnam (username);
    if (user_entry == 0)
      {
        /* If the calling program has a special syntax for expanding tildes,
  	 and we couldn't find a standard expansion, then let them try. */
*************** tilde_expand_word (filename)
*** 372,381 ****
--- 375,385 ----
        free (username);
        dirname = glue_prefix_and_suffix (user_entry->pw_dir, filename, user_len);
      }
  
    endpwent ();
+ #endif
    return (dirname);
  }
  
  
  #if defined (TEST)

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