| Line | |
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| 1 | dnl $Id$
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| 2 | dnl
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| 3 | dnl rk_CHECK_VAR(variable, includes)
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| 4 | AC_DEFUN([rk_CHECK_VAR], [
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| 5 | AC_MSG_CHECKING(for $1)
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| 6 | AC_CACHE_VAL(ac_cv_var_$1, [
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| 7 | m4_ifval([$2],[
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| 8 | AC_LINK_IFELSE([AC_LANG_PROGRAM([[$2
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| 9 | void * foo(void) { return &$1; }]],[[foo()]])],
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| 10 | [ac_cv_var_$1=yes],[ac_cv_var_$1=no])])
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| 11 | if test "$ac_cv_var_$1" != yes ; then
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| 12 | AC_LINK_IFELSE([AC_LANG_PROGRAM([[extern int $1;
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| 13 | int foo(void) { return $1; }]],[[foo()]])],
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| 14 | [ac_cv_var_$1=yes],[ac_cv_var_$1=no])
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| 15 | fi
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| 16 | ])
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| 17 | ac_foo=`eval echo \\$ac_cv_var_$1`
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| 18 | AC_MSG_RESULT($ac_foo)
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| 19 | if test "$ac_foo" = yes; then
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| 20 | AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_[]$1), 1,
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| 21 | [Define if you have the `]$1[' variable.])
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| 22 | m4_ifval([$2], AC_CHECK_DECLS([$1],[],[],[$2]))
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| 23 | fi
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| 24 | ])
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| 25 |
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| 26 | AC_WARNING_ENABLE([obsolete])
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| 27 | AU_DEFUN([AC_CHECK_VAR], [rk_CHECK_VAR([$2], [$1])], [foo])
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