dnl Macros to configure gpgme

dnl GNUPG_FIX_HDR_VERSION(FILE, NAME)
dnl Make the version number in gcrypt/gcrypt.h the same as the one here.
dnl (this is easier than to have a .in file just for one substitution)
dnl We must use a temp file in the current directory because make distcheck 
dnl install 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_TYPEDEF(TYPE, HAVE_NAME)
dnl Check whether a typedef exists and create a #define $2 if it exists
dnl
AC_DEFUN(GNUPG_CHECK_TYPEDEF,
  [ AC_MSG_CHECKING(for $1 typedef)
    AC_CACHE_VAL(gnupg_cv_typedef_$1,
    [AC_TRY_COMPILE([#include <stdlib.h>
    #include <sys/types.h>], [
    #undef $1
    int a = sizeof($1);
    ], gnupg_cv_typedef_$1=yes, gnupg_cv_typedef_$1=no )])
    AC_MSG_RESULT($gnupg_cv_typedef_$1)
    if test "$gnupg_cv_typedef_$1" = yes; then
        AC_DEFINE($2, ,
	 [Define to 1 if $1 is defined in the <sys/types.h> header file.])
    fi
  ])