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# getpass.m4 serial 6
dnl Copyright (C) 2002-2003, 2005 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
# Provide a getpass() function if the system doesn't have it.
AC_DEFUN([gl_FUNC_GETPASS],
[
AC_LIBSOURCES([getpass.c, getpass.h])
AC_REPLACE_FUNCS(getpass)
AC_CHECK_DECLS_ONCE(getpass)
if test $ac_cv_func_getpass = no; then
gl_PREREQ_GETPASS
fi
])
# Provide the GNU getpass() implementation. It supports passwords of
# arbitrary length (not just 8 bytes as on HP-UX).
AC_DEFUN([gl_FUNC_GETPASS_GNU],
[
AC_LIBSOURCES([getpass.c, getpass.h])
AC_CHECK_DECLS_ONCE(getpass)
dnl TODO: Detect when GNU getpass() is already found in glibc.
AC_LIBOBJ(getpass)
gl_PREREQ_GETPASS
dnl We must choose a different name for our function, since on ELF systems
dnl an unusable getpass() in libc.so would override our getpass() if it is
dnl compiled into a shared library.
AC_DEFINE([getpass], [gnu_getpass],
[Define to a replacement function name for getpass().])
])
# Prerequisites of lib/getpass.c.
AC_DEFUN([gl_PREREQ_GETPASS], [
AC_CHECK_HEADERS_ONCE(stdio_ext.h termios.h)
AC_CHECK_FUNCS_ONCE(__fsetlocking tcgetattr tcsetattr)
AC_CHECK_DECLS_ONCE([fflush_unlocked flockfile fputs_unlocked funlockfile putc_unlocked])
])
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