20 lines
544 B
Plaintext
20 lines
544 B
Plaintext
dnl $Id: have-struct-field.m4,v 1.6 1999/07/29 01:44:32 assar Exp $
|
|
dnl
|
|
dnl check for fields in a structure
|
|
dnl
|
|
dnl AC_HAVE_STRUCT_FIELD(struct, field, headers)
|
|
|
|
AC_DEFUN(AC_HAVE_STRUCT_FIELD, [
|
|
define(cache_val, translit(ac_cv_type_$1_$2, [A-Z ], [a-z_]))
|
|
AC_CACHE_CHECK([for $2 in $1], cache_val,[
|
|
AC_TRY_COMPILE([$3],[$1 x; x.$2;],
|
|
cache_val=yes,
|
|
cache_val=no)])
|
|
if test "$cache_val" = yes; then
|
|
define(foo, translit(HAVE_$1_$2, [a-z ], [A-Z_]))
|
|
AC_DEFINE(foo, 1, [Define if $1 has field $2.])
|
|
undefine([foo])
|
|
fi
|
|
undefine([cache_val])
|
|
])
|