(AC_CHECK_FUNCS): Add DINFINITY and DQNAN.

[bpt/guile.git] / configure.in

diff --git a/configure.in b/configure.in
index 509ea8e..a2dd4b3 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -1,33 +1,40 @@
 dnl   configuration script for Guile
 dnl   Process this file with autoconf to produce configure.
 dnl
-dnl  Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
-dnl
-dnl  This file is part of GUILE
-dnl
-dnl  GUILE is free software; you can redistribute it and/or modify it
-dnl  under the terms of the GNU General Public License as published by
-dnl  the Free Software Foundation; either version 2, or (at your
-dnl  option) any later version.
-dnl
-dnl  GUILE is distributed in the hope that it will be useful, but
-dnl  WITHOUT ANY WARRANTY; without even the implied warranty of
-dnl  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-dnl  General Public License for more details.
-dnl
-dnl  You should have received a copy of the GNU General Public License
-dnl  along with GUILE; see the file COPYING.  If not, write to the
-dnl  Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-dnl  Boston, MA 02111-1307, USA.
+
+define(GUILE_CONFIGURE_COPYRIGHT,[[
+
+Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+
+This file is part of GUILE
+
+GUILE is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your
+option) any later version.
+
+GUILE is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GUILE; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.
+
+]])
 
 AC_PREREQ(2.53)
 
 AC_INIT
+AC_COPYRIGHT(GUILE_CONFIGURE_COPYRIGHT)
 AC_CONFIG_SRCDIR([GUILE-VERSION])
 . $srcdir/GUILE-VERSION
 AM_INIT_AUTOMAKE($PACKAGE, $VERSION, no-define)
 AM_MAINTAINER_MODE
 AM_CONFIG_HEADER([config.h])
+AH_TOP(/*GUILE_CONFIGURE_COPYRIGHT*/)
 
 #--------------------------------------------------------------------
 #
@@ -582,13 +589,38 @@ AC_SUBST(EXTRA_DEFS)
 
 AC_SUBST(DLPREOPEN)
 
-AC_CHECK_HEADERS([assert.h])
+# Reasons for testing:
+#   crt_externs.h - Darwin specific
+#
+AC_CHECK_HEADERS([assert.h crt_externs.h])
 
-AC_CHECK_FUNCS([ctermid ftime fchown getcwd geteuid gettimeofday lstat mkdir mknod nice readlink rename rmdir select setegid seteuid setlocale setpgid setsid sigaction siginterrupt strftime strptime symlink sync tcgetpgrp tcsetpgrp times uname waitpid strdup system usleep atexit on_exit chown link fcntl ttyname getpwent getgrent kill getppid getpgrp fork setitimer getitimer strchr strcmp index bcopy memcpy rindex unsetenv])
+# Reasons for testing:
+#   DINFINITY - OSF specific
+#   DQNAN - OSF specific
+#       (DINFINITY and DQNAN are actually global variables, not functions)
+#   _NSGetEnviron - Darwin specific
+#
+AC_CHECK_FUNCS([DINFINITY DQNAN ctermid ftime fchown getcwd geteuid gettimeofday lstat mkdir mknod nice readlink rename rmdir select setegid seteuid setlocale setpgid setsid sigaction siginterrupt strftime strptime symlink sync tcgetpgrp tcsetpgrp times uname waitpid strdup system usleep atexit on_exit chown link fcntl ttyname getpwent getgrent kill getppid getpgrp fork setitimer getitimer strchr strcmp index bcopy memcpy rindex unsetenv _NSGetEnviron])
 
 AC_CHECK_HEADERS(crypt.h sys/resource.h sys/file.h)
 AC_CHECK_FUNCS(chroot flock getlogin cuserid getpriority setpriority getpass sethostname gethostname)
-AC_CHECK_LIB(crypt, crypt)
+
+# crypt() may or may not be available, for instance in some countries there
+# are restrictions on cryptography.
+#
+# crypt() might be in libc (eg. OpenBSD), or it might be in a separate
+# -lcrypt library (eg. Debian GNU/Linux).
+#
+# On HP-UX 11, crypt() is in libc and there's a dummy libcrypt.a.  We must
+# be careful to avoid -lcrypt in this case, since libtool will see there's
+# only a static libcrypt and decide to build only a static libguile.
+#
+# AC_SEARCH_LIBS lets us add -lcrypt to LIBS only if crypt() is not in the
+# libraries already in that list.
+#
+AC_SEARCH_LIBS(crypt, crypt,
+  [AC_DEFINE(HAVE_CRYPT,1,
+             [Define to 1 if you have the `crypt' function.])])
 
 dnl GMP tests
 AC_CHECK_LIB([gmp], [__gmpz_init], ,