Sylpheed

dnl GNUPG_CHECK_TYPEDEF(TYPE, HAVE_NAME [, COMMENT])

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, 1, $3)

    fi

  ])