1dnl macros to configure gnupg
2dnl Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
3dnl
4dnl This file is part of GnuPG.
5dnl
6dnl GnuPG is free software; you can redistribute it and/or modify
7dnl it under the terms of the GNU General Public License as published by
8dnl the Free Software Foundation; either version 2 of the License, or
9dnl (at your option) any later version.
10dnl
11dnl GnuPG is distributed in the hope that it will be useful,
12dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
13dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14dnl GNU General Public License for more details.
15dnl
16dnl You should have received a copy of the GNU General Public License
17dnl along with this program; if not, write to the Free Software
18dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
19
20dnl GNUPG_CHECK_TYPEDEF(TYPE, HAVE_NAME)
21dnl Check whether a typedef exists and create a #define $2 if it exists
22dnl
23AC_DEFUN([GNUPG_CHECK_TYPEDEF],
24  [ AC_MSG_CHECKING(for $1 typedef)
25    AC_CACHE_VAL(gnupg_cv_typedef_$1,
26    [AC_TRY_COMPILE([#define _GNU_SOURCE 1
27    #include <stdlib.h>
28    #include <sys/types.h>], [
29    #undef $1
30    int a = sizeof($1);
31    ], gnupg_cv_typedef_$1=yes, gnupg_cv_typedef_$1=no )])
32    AC_MSG_RESULT($gnupg_cv_typedef_$1)
33    if test "$gnupg_cv_typedef_$1" = yes; then
34        AC_DEFINE($2,1,[Defined if a `]$1[' is typedef'd])
35    fi
36  ])
37
38dnl Stolen from gcc
39dnl Define MKDIR_TAKES_ONE_ARG if mkdir accepts only one argument instead
40dnl of the usual 2.
41AC_DEFUN([GNUPG_FUNC_MKDIR_TAKES_ONE_ARG],
42[AC_CHECK_HEADERS(sys/stat.h unistd.h direct.h)
43AC_CACHE_CHECK([if mkdir takes one argument], gnupg_cv_mkdir_takes_one_arg,
44[AC_TRY_COMPILE([
45#include <sys/types.h>
46#ifdef HAVE_SYS_STAT_H
47# include <sys/stat.h>
48#endif
49#ifdef HAVE_UNISTD_H
50# include <unistd.h>
51#endif
52#ifdef HAVE_DIRECT_H
53# include <direct.h>
54#endif], [mkdir ("foo", 0);],
55        gnupg_cv_mkdir_takes_one_arg=no, gnupg_cv_mkdir_takes_one_arg=yes)])
56if test $gnupg_cv_mkdir_takes_one_arg = yes ; then
57  AC_DEFINE(MKDIR_TAKES_ONE_ARG,1,
58            [Defined if mkdir() does not take permission flags])
59fi
60])
61
62
63dnl GNUPG_CHECK_VA_COPY()
64dnl   Do some check on how to implement va_copy.
65dnl   May define MUST_COPY_VA_BY_VAL.
66dnl   Actual test code taken from glib-1.1.
67AC_DEFUN([GNUPG_CHECK_VA_COPY],
68[ AC_MSG_CHECKING(whether va_lists must be copied by value)
69  AC_CACHE_VAL(gnupg_cv_must_copy_va_byval,[
70    if test "$cross_compiling" = yes; then
71      gnupg_cv_must_copy_va_byval=no
72    else
73      gnupg_cv_must_copy_va_byval=no
74      AC_TRY_RUN([
75       #include <stdarg.h>
76       void f (int i, ...)
77       {
78          va_list args1, args2;
79          va_start (args1, i);
80          args2 = args1;
81          if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
82            exit (1);
83          va_end (args1);
84          va_end (args2);
85       }
86
87       int main()
88       {
89          f (0, 42);
90            return 0;
91       }
92      ],gnupg_cv_must_copy_va_byval=yes)
93    fi
94  ])
95  if test "$gnupg_cv_must_copy_va_byval" = yes; then
96     AC_DEFINE(MUST_COPY_VA_BYVAL,1,[used to implement the va_copy macro])
97  fi
98  if test "$cross_compiling" = yes; then
99    AC_MSG_RESULT(assuming $gnupg_cv_must_copy_va_byval)
100  else
101    AC_MSG_RESULT($gnupg_cv_must_copy_va_byval)
102  fi
103])
104