21 lines
539 B
Plaintext
21 lines
539 B
Plaintext
|
dnl $Id: check-var.m4,v 1.2 1999/03/01 09:52:23 joda Exp $
|
||
|
|
dnl
|
||
|
|
dnl AC_CHECK_VAR(includes, variable)
|
||
|
|
AC_DEFUN(AC_CHECK_VAR, [
|
||
|
|
AC_MSG_CHECKING(for $2)
|
||
|
|
AC_CACHE_VAL(ac_cv_var_$2, [
|
||
|
|
AC_TRY_LINK([extern int $2;
|
||
|
|
int foo() { return $2; }],
|
||
|
|
[foo()],
|
||
|
|
ac_cv_var_$2=yes, ac_cv_var_$2=no)
|
||
|
|
])
|
||
|
|
define([foo], [HAVE_]translit($2, [a-z], [A-Z]))
|
||
|
|
|
||
|
|
AC_MSG_RESULT(`eval echo \\$ac_cv_var_$2`)
|
||
|
|
if test `eval echo \\$ac_cv_var_$2` = yes; then
|
||
|
|
AC_DEFINE_UNQUOTED(foo, 1, [define if you have $2])
|
||
|
|
AC_CHECK_DECLARATION([$1],[$2])
|
||
|
|
fi
|
||
|
|
undefine([foo])
|
||
|
|
])
|