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dnl Macros to configure GPGME
dnl Copyright (C) 2004 g10 Code GmbH
dnl
dnl This file is part of GPGME.
dnl
dnl GPGME is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 2 of the License, or
dnl (at your option) any later version.
dnl
dnl GPGME is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
dnl GNU General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License
dnl along with this program; if not, write to the Free Software
dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
dnl GNUPG_FIX_HDR_VERSION(FILE, NAME)
dnl Make the version number stored in NAME in the header file FILE the
dnl same as the one here. This is easier than to have a .in file just
dnl for one substitution.
dnl We must use a temp file in the current directory because make
dnl distcheck installs all sourcefiles RO.
dnl (wk 2001-12-18)
AC_DEFUN(GNUPG_FIX_HDR_VERSION,
[ sed "s/^#define $2 \".*/#define $2 \"$VERSION\"/" $srcdir/$1 > fixhdr.tmp
if cmp -s $srcdir/$1 fixhdr.tmp 2>/dev/null; then
rm -f fixhdr.tmp
else
rm -f $srcdir/$1
if mv fixhdr.tmp $srcdir/$1 ; then
:
else
AC_MSG_ERROR([[
***
*** Failed to fix the version string macro $2 in $1.
*** The old file has been saved as fixhdr.tmp
***]])
fi
AC_MSG_WARN([fixed the $2 macro in $1])
fi
])
dnl GNUPG_CHECK_VA_COPY()
dnl Do some check on how to implement va_copy.
dnl May define MUST_COPY_VA_BY_VAL.
dnl Actual test code taken from glib-1.1.
AC_DEFUN(GNUPG_CHECK_VA_COPY,
[ AC_MSG_CHECKING(whether va_lists must be copied by value)
AC_CACHE_VAL(gnupg_cv_must_copy_va_byval,[
gnupg_cv_must_copy_va_byval=no
AC_TRY_RUN([
#include <stdarg.h>
void f (int i, ...)
{
va_list args1, args2;
va_start (args1, i);
args2 = args1;
if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
exit (1);
va_end (args1);
va_end (args2);
}
int main()
{
f (0, 42);
return 0;
}
],gnupg_cv_must_copy_va_byval=yes)
])
if test "$gnupg_cv_must_copy_va_byval" = yes; then
AC_DEFINE(MUST_COPY_VA_BYVAL,1,[used to implement the va_copy macro])
fi
AC_MSG_RESULT($gnupg_cv_must_copy_va_byval)
])
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